diff options
Diffstat (limited to 'arch')
38 files changed, 412 insertions, 437 deletions
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 3580d57ea21..79e9bdbfc49 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -124,7 +124,7 @@ KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS)) endif ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj) -asflags-y := -Wa,-march=all -DZIMAGE +asflags-y := -DZIMAGE # Supply kernel BSS size to the decompressor via a linker symbol. KBSS_SZ = $(shell $(CROSS_COMPILE)size $(obj)/../../../../vmlinux | \ diff --git a/arch/arm/boot/compressed/debug.S b/arch/arm/boot/compressed/debug.S index 6e8382d5b7a..5392ee63338 100644 --- a/arch/arm/boot/compressed/debug.S +++ b/arch/arm/boot/compressed/debug.S @@ -1,6 +1,8 @@ #include <linux/linkage.h> #include <asm/assembler.h> +#ifndef CONFIG_DEBUG_SEMIHOSTING + #include CONFIG_DEBUG_LL_INCLUDE ENTRY(putc) @@ -10,3 +12,29 @@ ENTRY(putc) busyuart r3, r1 mov pc, lr ENDPROC(putc) + +#else + +ENTRY(putc) + adr r1, 1f + ldmia r1, {r2, r3} + add r2, r2, r1 + ldr r1, [r2, r3] + strb r0, [r1] + mov r0, #0x03 @ SYS_WRITEC + ARM( svc #0x123456 ) + THUMB( svc #0xab ) + mov pc, lr + .align 2 +1: .word _GLOBAL_OFFSET_TABLE_ - . + .word semi_writec_buf(GOT) +ENDPROC(putc) + + .bss + .global semi_writec_buf + .type semi_writec_buf, %object +semi_writec_buf: + .space 4 + .size semi_writec_buf, 4 + +#endif diff --git a/arch/arm/boot/compressed/head-sa1100.S b/arch/arm/boot/compressed/head-sa1100.S index 6179d94dd5c..3115e313d9f 100644 --- a/arch/arm/boot/compressed/head-sa1100.S +++ b/arch/arm/boot/compressed/head-sa1100.S @@ -11,6 +11,7 @@ #include <asm/mach-types.h> .section ".start", "ax" + .arch armv4 __SA1100_start: diff --git a/arch/arm/boot/compressed/head-shark.S b/arch/arm/boot/compressed/head-shark.S index 089c560e07f..92b56897ed6 100644 --- a/arch/arm/boot/compressed/head-shark.S +++ b/arch/arm/boot/compressed/head-shark.S @@ -18,6 +18,7 @@ .section ".start", "ax" + .arch armv4 b __beginning __ofw_data: .long 0 @ the number of memory blocks diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index fe4d9c3ad76..032a8d98714 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -11,6 +11,7 @@ #include <linux/linkage.h> #include <asm/assembler.h> + .arch armv7-a /* * Debugging stuff * @@ -805,8 +806,8 @@ call_cache_fn: adr r12, proc_types .align 2 .type proc_types,#object proc_types: - .word 0x00000000 @ old ARM ID - .word 0x0000f000 + .word 0x41000000 @ old ARM ID + .word 0xff00f000 mov pc, lr THUMB( nop ) mov pc, lr diff --git a/arch/arm/include/asm/percpu.h b/arch/arm/include/asm/percpu.h index 968c0a14e0a..209e6504922 100644 --- a/arch/arm/include/asm/percpu.h +++ b/arch/arm/include/asm/percpu.h @@ -30,8 +30,15 @@ static inline void set_my_cpu_offset(unsigned long off) static inline unsigned long __my_cpu_offset(void) { unsigned long off; - /* Read TPIDRPRW */ - asm("mrc p15, 0, %0, c13, c0, 4" : "=r" (off) : : "memory"); + register unsigned long *sp asm ("sp"); + + /* + * Read TPIDRPRW. + * We want to allow caching the value, so avoid using volatile and + * instead use a fake stack read to hazard against barrier(). + */ + asm("mrc p15, 0, %0, c13, c0, 4" : "=r" (off) : "Q" (*sp)); + return off; } #define __my_cpu_offset __my_cpu_offset() diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c index f10316b4ecd..c5a59546a25 100644 --- a/arch/arm/kernel/topology.c +++ b/arch/arm/kernel/topology.c @@ -13,6 +13,7 @@ #include <linux/cpu.h> #include <linux/cpumask.h> +#include <linux/export.h> #include <linux/init.h> #include <linux/percpu.h> #include <linux/node.h> @@ -200,6 +201,7 @@ static inline void update_cpu_power(unsigned int cpuid, unsigned int mpidr) {} * cpu topology table */ struct cputopo_arm cpu_topology[NR_CPUS]; +EXPORT_SYMBOL_GPL(cpu_topology); const struct cpumask *cpu_coregroup_mask(int cpu) { diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h index 820116067c1..516e6e9a559 100644 --- a/arch/mips/include/asm/mmu_context.h +++ b/arch/mips/include/asm/mmu_context.h @@ -117,7 +117,7 @@ get_new_mmu_context(struct mm_struct *mm, unsigned long cpu) if (! ((asid += ASID_INC) & ASID_MASK) ) { if (cpu_has_vtag_icache) flush_icache_all(); -#ifdef CONFIG_VIRTUALIZATION +#ifdef CONFIG_KVM kvm_local_flush_tlb_all(); /* start new asid cycle */ #else local_flush_tlb_all(); /* start new asid cycle */ diff --git a/arch/mips/include/uapi/asm/kvm.h b/arch/mips/include/uapi/asm/kvm.h index 3f424f5217d..f09ff5ae205 100644 --- a/arch/mips/include/uapi/asm/kvm.h +++ b/arch/mips/include/uapi/asm/kvm.h @@ -58,56 +58,53 @@ struct kvm_fpu { * bits[2..0] - Register 'sel' index. * bits[7..3] - Register 'rd' index. * bits[15..8] - Must be zero. - * bits[63..16] - 1 -> CP0 registers. + * bits[31..16] - 1 -> CP0 registers. + * bits[51..32] - Must be zero. + * bits[63..52] - As per linux/kvm.h * * Other sets registers may be added in the future. Each set would - * have its own identifier in bits[63..16]. - * - * The addr field of struct kvm_one_reg must point to an aligned - * 64-bit wide location. For registers that are narrower than - * 64-bits, the value is stored in the low order bits of the location, - * and sign extended to 64-bits. + * have its own identifier in bits[31..16]. * * The registers defined in struct kvm_regs are also accessible, the * id values for these are below. */ -#define KVM_REG_MIPS_R0 0 -#define KVM_REG_MIPS_R1 1 -#define KVM_REG_MIPS_R2 2 -#define KVM_REG_MIPS_R3 3 -#define KVM_REG_MIPS_R4 4 -#define KVM_REG_MIPS_R5 5 -#define KVM_REG_MIPS_R6 6 -#define KVM_REG_MIPS_R7 7 -#define KVM_REG_MIPS_R8 8 -#define KVM_REG_MIPS_R9 9 -#define KVM_REG_MIPS_R10 10 -#define KVM_REG_MIPS_R11 11 -#define KVM_REG_MIPS_R12 12 -#define KVM_REG_MIPS_R13 13 -#define KVM_REG_MIPS_R14 14 -#define KVM_REG_MIPS_R15 15 -#define KVM_REG_MIPS_R16 16 -#define KVM_REG_MIPS_R17 17 -#define KVM_REG_MIPS_R18 18 -#define KVM_REG_MIPS_R19 19 -#define KVM_REG_MIPS_R20 20 -#define KVM_REG_MIPS_R21 21 -#define KVM_REG_MIPS_R22 22 -#define KVM_REG_MIPS_R23 23 -#define KVM_REG_MIPS_R24 24 -#define KVM_REG_MIPS_R25 25 -#define KVM_REG_MIPS_R26 26 -#define KVM_REG_MIPS_R27 27 -#define KVM_REG_MIPS_R28 28 -#define KVM_REG_MIPS_R29 29 -#define KVM_REG_MIPS_R30 30 -#define KVM_REG_MIPS_R31 31 +#define KVM_REG_MIPS_R0 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 0) +#define KVM_REG_MIPS_R1 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 1) +#define KVM_REG_MIPS_R2 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 2) +#define KVM_REG_MIPS_R3 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 3) +#define KVM_REG_MIPS_R4 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 4) +#define KVM_REG_MIPS_R5 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 5) +#define KVM_REG_MIPS_R6 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 6) +#define KVM_REG_MIPS_R7 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 7) +#define KVM_REG_MIPS_R8 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 8) +#define KVM_REG_MIPS_R9 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 9) +#define KVM_REG_MIPS_R10 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 10) +#define KVM_REG_MIPS_R11 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 11) +#define KVM_REG_MIPS_R12 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 12) +#define KVM_REG_MIPS_R13 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 13) +#define KVM_REG_MIPS_R14 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 14) +#define KVM_REG_MIPS_R15 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 15) +#define KVM_REG_MIPS_R16 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 16) +#define KVM_REG_MIPS_R17 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 17) +#define KVM_REG_MIPS_R18 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 18) +#define KVM_REG_MIPS_R19 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 19) +#define KVM_REG_MIPS_R20 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 20) +#define KVM_REG_MIPS_R21 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 21) +#define KVM_REG_MIPS_R22 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 22) +#define KVM_REG_MIPS_R23 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 23) +#define KVM_REG_MIPS_R24 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 24) +#define KVM_REG_MIPS_R25 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 25) +#define KVM_REG_MIPS_R26 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 26) +#define KVM_REG_MIPS_R27 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 27) +#define KVM_REG_MIPS_R28 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 28) +#define KVM_REG_MIPS_R29 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 29) +#define KVM_REG_MIPS_R30 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 30) +#define KVM_REG_MIPS_R31 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 31) -#define KVM_REG_MIPS_HI 32 -#define KVM_REG_MIPS_LO 33 -#define KVM_REG_MIPS_PC 34 +#define KVM_REG_MIPS_HI (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 32) +#define KVM_REG_MIPS_LO (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 33) +#define KVM_REG_MIPS_PC (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 34) /* * KVM MIPS specific structures and definitions diff --git a/arch/mips/kernel/ftrace.c b/arch/mips/kernel/ftrace.c index cf5509f13dd..dba90ec0dc3 100644 --- a/arch/mips/kernel/ftrace.c +++ b/arch/mips/kernel/ftrace.c @@ -25,12 +25,16 @@ #define MCOUNT_OFFSET_INSNS 4 #endif +#ifdef CONFIG_DYNAMIC_FTRACE + /* Arch override because MIPS doesn't need to run this from stop_machine() */ void arch_ftrace_update_code(int command) { ftrace_modify_all_code(command); } +#endif + /* * Check if the address is in kernel space * diff --git a/arch/mips/kernel/idle.c b/arch/mips/kernel/idle.c index 3b09b888afa..0c655deeea4 100644 --- a/arch/mips/kernel/idle.c +++ b/arch/mips/kernel/idle.c @@ -93,26 +93,27 @@ static void rm7k_wait_irqoff(void) } /* - * The Au1xxx wait is available only if using 32khz counter or - * external timer source, but specifically not CP0 Counter. - * alchemy/common/time.c may override cpu_wait! + * Au1 'wait' is only useful when the 32kHz counter is used as timer, + * since coreclock (and the cp0 counter) stops upon executing it. Only an + * interrupt can wake it, so they must be enabled before entering idle modes. */ static void au1k_wait(void) { + unsigned long c0status = read_c0_status() | 1; /* irqs on */ + __asm__( " .set mips3 \n" " cache 0x14, 0(%0) \n" " cache 0x14, 32(%0) \n" " sync \n" - " nop \n" + " mtc0 %1, $12 \n" /* wr c0status */ " wait \n" " nop \n" " nop \n" " nop \n" " nop \n" " .set mips0 \n" - : : "r" (au1k_wait)); - local_irq_enable(); + : : "r" (au1k_wait), "r" (c0status)); } static int __initdata nowait; diff --git a/arch/mips/kvm/kvm_mips.c b/arch/mips/kvm/kvm_mips.c index d934b017f47..dd203e59e6f 100644 --- a/arch/mips/kvm/kvm_mips.c +++ b/arch/mips/kvm/kvm_mips.c @@ -485,29 +485,35 @@ kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, return -ENOIOCTLCMD; } -#define KVM_REG_MIPS_CP0_INDEX (0x10000 + 8 * 0 + 0) -#define KVM_REG_MIPS_CP0_ENTRYLO0 (0x10000 + 8 * 2 + 0) -#define KVM_REG_MIPS_CP0_ENTRYLO1 (0x10000 + 8 * 3 + 0) -#define KVM_REG_MIPS_CP0_CONTEXT (0x10000 + 8 * 4 + 0) -#define KVM_REG_MIPS_CP0_USERLOCAL (0x10000 + 8 * 4 + 2) -#define KVM_REG_MIPS_CP0_PAGEMASK (0x10000 + 8 * 5 + 0) -#define KVM_REG_MIPS_CP0_PAGEGRAIN (0x10000 + 8 * 5 + 1) -#define KVM_REG_MIPS_CP0_WIRED (0x10000 + 8 * 6 + 0) -#define KVM_REG_MIPS_CP0_HWRENA (0x10000 + 8 * 7 + 0) -#define KVM_REG_MIPS_CP0_BADVADDR (0x10000 + 8 * 8 + 0) -#define KVM_REG_MIPS_CP0_COUNT (0x10000 + 8 * 9 + 0) -#define KVM_REG_MIPS_CP0_ENTRYHI (0x10000 + 8 * 10 + 0) -#define KVM_REG_MIPS_CP0_COMPARE (0x10000 + 8 * 11 + 0) -#define KVM_REG_MIPS_CP0_STATUS (0x10000 + 8 * 12 + 0) -#define KVM_REG_MIPS_CP0_CAUSE (0x10000 + 8 * 13 + 0) -#define KVM_REG_MIPS_CP0_EBASE (0x10000 + 8 * 15 + 1) -#define KVM_REG_MIPS_CP0_CONFIG (0x10000 + 8 * 16 + 0) -#define KVM_REG_MIPS_CP0_CONFIG1 (0x10000 + 8 * 16 + 1) -#define KVM_REG_MIPS_CP0_CONFIG2 (0x10000 + 8 * 16 + 2) -#define KVM_REG_MIPS_CP0_CONFIG3 (0x10000 + 8 * 16 + 3) -#define KVM_REG_MIPS_CP0_CONFIG7 (0x10000 + 8 * 16 + 7) -#define KVM_REG_MIPS_CP0_XCONTEXT (0x10000 + 8 * 20 + 0) -#define KVM_REG_MIPS_CP0_ERROREPC (0x10000 + 8 * 30 + 0) +#define MIPS_CP0_32(_R, _S) \ + (KVM_REG_MIPS | KVM_REG_SIZE_U32 | 0x10000 | (8 * (_R) + (_S))) + +#define MIPS_CP0_64(_R, _S) \ + (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 0x10000 | (8 * (_R) + (_S))) + +#define KVM_REG_MIPS_CP0_INDEX MIPS_CP0_32(0, 0) +#define KVM_REG_MIPS_CP0_ENTRYLO0 MIPS_CP0_64(2, 0) +#define KVM_REG_MIPS_CP0_ENTRYLO1 MIPS_CP0_64(3, 0) +#define KVM_REG_MIPS_CP0_CONTEXT MIPS_CP0_64(4, 0) +#define KVM_REG_MIPS_CP0_USERLOCAL MIPS_CP0_64(4, 2) +#define KVM_REG_MIPS_CP0_PAGEMASK MIPS_CP0_32(5, 0) +#define KVM_REG_MIPS_CP0_PAGEGRAIN MIPS_CP0_32(5, 1) +#define KVM_REG_MIPS_CP0_WIRED MIPS_CP0_32(6, 0) +#define KVM_REG_MIPS_CP0_HWRENA MIPS_CP0_32(7, 0) +#define KVM_REG_MIPS_CP0_BADVADDR MIPS_CP0_64(8, 0) +#define KVM_REG_MIPS_CP0_COUNT MIPS_CP0_32(9, 0) +#define KVM_REG_MIPS_CP0_ENTRYHI MIPS_CP0_64(10, 0) +#define KVM_REG_MIPS_CP0_COMPARE MIPS_CP0_32(11, 0) +#define KVM_REG_MIPS_CP0_STATUS MIPS_CP0_32(12, 0) +#define KVM_REG_MIPS_CP0_CAUSE MIPS_CP0_32(13, 0) +#define KVM_REG_MIPS_CP0_EBASE MIPS_CP0_64(15, 1) +#define KVM_REG_MIPS_CP0_CONFIG MIPS_CP0_32(16, 0) +#define KVM_REG_MIPS_CP0_CONFIG1 MIPS_CP0_32(16, 1) +#define KVM_REG_MIPS_CP0_CONFIG2 MIPS_CP0_32(16, 2) +#define KVM_REG_MIPS_CP0_CONFIG3 MIPS_CP0_32(16, 3) +#define KVM_REG_MIPS_CP0_CONFIG7 MIPS_CP0_32(16, 7) +#define KVM_REG_MIPS_CP0_XCONTEXT MIPS_CP0_64(20, 0) +#define KVM_REG_MIPS_CP0_ERROREPC MIPS_CP0_64(30, 0) static u64 kvm_mips_get_one_regs[] = { KVM_REG_MIPS_R0, @@ -567,8 +573,6 @@ static u64 kvm_mips_get_one_regs[] = { static int kvm_mips_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) { - u64 __user *uaddr = (u64 __user *)(long)reg->addr; - struct mips_coproc *cop0 = vcpu->arch.cop0; s64 v; @@ -631,18 +635,39 @@ static int kvm_mips_get_reg(struct kvm_vcpu *vcpu, default: return -EINVAL; } - return put_user(v, uaddr); + if ((reg->id & KVM_REG_SIZE_MASK) == KVM_REG_SIZE_U64) { + u64 __user *uaddr64 = (u64 __user *)(long)reg->addr; + return put_user(v, uaddr64); + } else if ((reg->id & KVM_REG_SIZE_MASK) == KVM_REG_SIZE_U32) { + u32 __user *uaddr32 = (u32 __user *)(long)reg->addr; + u32 v32 = (u32)v; + return put_user(v32, uaddr32); + } else { + return -EINVAL; + } } static int kvm_mips_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) { - u64 __user *uaddr = (u64 __user *)(long)reg->addr; struct mips_coproc *cop0 = vcpu->arch.cop0; u64 v; - if (get_user(v, uaddr) != 0) - return -EFAULT; + if ((reg->id & KVM_REG_SIZE_MASK) == KVM_REG_SIZE_U64) { + u64 __user *uaddr64 = (u64 __user *)(long)reg->addr; + + if (get_user(v, uaddr64) != 0) + return -EFAULT; + } else if ((reg->id & KVM_REG_SIZE_MASK) == KVM_REG_SIZE_U32) { + u32 __user *uaddr32 = (u32 __user *)(long)reg->addr; + s32 v32; + + if (get_user(v32, uaddr32) != 0) + return -EFAULT; + v = (s64)v32; + } else { + return -EINVAL; + } switch (reg->id) { case KVM_REG_MIPS_R0: diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h index 26807e5aff5..6f3887d884d 100644 --- a/arch/powerpc/include/asm/cputable.h +++ b/arch/powerpc/include/asm/cputable.h @@ -176,6 +176,7 @@ extern const char *powerpc_base_platform; #define CPU_FTR_CFAR LONG_ASM_CONST(0x0100000000000000) #define CPU_FTR_HAS_PPR LONG_ASM_CONST(0x0200000000000000) #define CPU_FTR_DAWR LONG_ASM_CONST(0x0400000000000000) +#define CPU_FTR_DABRX LONG_ASM_CONST(0x0800000000000000) #ifndef __ASSEMBLY__ @@ -394,19 +395,20 @@ extern const char *powerpc_base_platform; CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_201 | \ CPU_FTR_ALTIVEC_COMP | CPU_FTR_CAN_NAP | CPU_FTR_MMCRA | \ CPU_FTR_CP_USE_DCBTZ | CPU_FTR_STCX_CHECKS_ADDRESS | \ - CPU_FTR_HVMODE) + CPU_FTR_HVMODE | CPU_FTR_DABRX) #define CPU_FTRS_POWER5 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ CPU_FTR_MMCRA | CPU_FTR_SMT | \ CPU_FTR_COHERENT_ICACHE | CPU_FTR_PURR | \ - CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB) + CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_DABRX) #define CPU_FTRS_POWER6 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ CPU_FTR_MMCRA | CPU_FTR_SMT | \ CPU_FTR_COHERENT_ICACHE | \ CPU_FTR_PURR | CPU_FTR_SPURR | CPU_FTR_REAL_LE | \ CPU_FTR_DSCR | CPU_FTR_UNALIGNED_LD_STD | \ - CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_CFAR) + CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_CFAR | \ + CPU_FTR_DABRX) #define CPU_FTRS_POWER7 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_206 |\ CPU_FTR_MMCRA | CPU_FTR_SMT | \ @@ -415,7 +417,7 @@ extern const char *powerpc_base_platform; CPU_FTR_DSCR | CPU_FTR_SAO | CPU_FTR_ASYM_SMT | \ CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \ CPU_FTR_ICSWX | CPU_FTR_CFAR | CPU_FTR_HVMODE | \ - CPU_FTR_VMX_COPY | CPU_FTR_HAS_PPR) + CPU_FTR_VMX_COPY | CPU_FTR_HAS_PPR | CPU_FTR_DABRX) #define CPU_FTRS_POWER8 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_206 |\ CPU_FTR_MMCRA | CPU_FTR_SMT | \ @@ -430,14 +432,15 @@ extern const char *powerpc_base_platform; CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \ CPU_FTR_PAUSE_ZERO | CPU_FTR_CELL_TB_BUG | CPU_FTR_CP_USE_DCBTZ | \ - CPU_FTR_UNALIGNED_LD_STD) + CPU_FTR_UNALIGNED_LD_STD | CPU_FTR_DABRX) #define CPU_FTRS_PA6T (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_ALTIVEC_COMP | \ - CPU_FTR_PURR | CPU_FTR_REAL_LE) + CPU_FTR_PURR | CPU_FTR_REAL_LE | CPU_FTR_DABRX) #define CPU_FTRS_COMPATIBLE (CPU_FTR_USE_TB | CPU_FTR_PPCAS_ARCH_V2) #define CPU_FTRS_A2 (CPU_FTR_USE_TB | CPU_FTR_SMT | CPU_FTR_DBELL | \ - CPU_FTR_NOEXECUTE | CPU_FTR_NODSISRALIGN | CPU_FTR_ICSWX) + CPU_FTR_NOEXECUTE | CPU_FTR_NODSISRALIGN | \ + CPU_FTR_ICSWX | CPU_FTR_DABRX ) #ifdef __powerpc64__ #ifdef CONFIG_PPC_BOOK3E diff --git a/arch/powerpc/include/asm/kvm_asm.h b/arch/powerpc/include/asm/kvm_asm.h index b9dd382cb34..851bac7afa4 100644 --- a/arch/powerpc/include/asm/kvm_asm.h +++ b/arch/powerpc/include/asm/kvm_asm.h @@ -54,8 +54,16 @@ #define BOOKE_INTERRUPT_DEBUG 15 /* E500 */ -#define BOOKE_INTERRUPT_SPE_UNAVAIL 32 -#define BOOKE_INTERRUPT_SPE_FP_DATA 33 +#define BOOKE_INTERRUPT_SPE_ALTIVEC_UNAVAIL 32 +#define BOOKE_INTERRUPT_SPE_FP_DATA_ALTIVEC_ASSIST 33 +/* + * TODO: Unify 32-bit and 64-bit kernel exception handlers to use same defines + */ +#define BOOKE_INTERRUPT_SPE_UNAVAIL BOOKE_INTERRUPT_SPE_ALTIVEC_UNAVAIL +#define BOOKE_INTERRUPT_SPE_FP_DATA BOOKE_INTERRUPT_SPE_FP_DATA_ALTIVEC_ASSIST +#define BOOKE_INTERRUPT_ALTIVEC_UNAVAIL BOOKE_INTERRUPT_SPE_ALTIVEC_UNAVAIL +#define BOOKE_INTERRUPT_ALTIVEC_ASSIST \ + BOOKE_INTERRUPT_SPE_FP_DATA_ALTIVEC_ASSIST #define BOOKE_INTERRUPT_SPE_FP_ROUND 34 #define BOOKE_INTERRUPT_PERFORMANCE_MONITOR 35 #define BOOKE_INTERRUPT_DOORBELL 36 @@ -67,10 +75,6 @@ #define BOOKE_INTERRUPT_HV_SYSCALL 40 #define BOOKE_INTERRUPT_HV_PRIV 41 -/* altivec */ -#define BOOKE_INTERRUPT_ALTIVEC_UNAVAIL 42 -#define BOOKE_INTERRUPT_ALTIVEC_ASSIST 43 - /* book3s */ #define BOOK3S_INTERRUPT_SYSTEM_RESET 0x100 diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index 1f0937d7d4b..2a45d0f0438 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -452,8 +452,8 @@ static struct cpu_spec __initdata cpu_specs[] = { .mmu_features = MMU_FTRS_POWER8, .icache_bsize = 128, .dcache_bsize = 128, - .oprofile_type = PPC_OPROFILE_POWER4, - .oprofile_cpu_type = 0, + .oprofile_type = PPC_OPROFILE_INVALID, + .oprofile_cpu_type = "ppc64/ibm-compat-v1", .cpu_setup = __setup_cpu_power8, .cpu_restore = __restore_cpu_power8, .platform = "power8", @@ -506,8 +506,8 @@ static struct cpu_spec __initdata cpu_specs[] = { .dcache_bsize = 128, .num_pmcs = 6, .pmc_type = PPC_PMC_IBM, - .oprofile_cpu_type = 0, - .oprofile_type = PPC_OPROFILE_POWER4, + .oprofile_cpu_type = "ppc64/power8", + .oprofile_type = PPC_OPROFILE_INVALID, .cpu_setup = __setup_cpu_power8, .cpu_restore = __restore_cpu_power8, .platform = "power8", diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 246b11c4fe7..8741c854e03 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -465,20 +465,6 @@ BEGIN_FTR_SECTION std r0, THREAD_EBBHR(r3) mfspr r0, SPRN_EBBRR std r0, THREAD_EBBRR(r3) - - /* PMU registers made user read/(write) by EBB */ - mfspr r0, SPRN_SIAR - std r0, THREAD_SIAR(r3) - mfspr r0, SPRN_SDAR - std r0, THREAD_SDAR(r3) - mfspr r0, SPRN_SIER - std r0, THREAD_SIER(r3) - mfspr r0, SPRN_MMCR0 - std r0, THREAD_MMCR0(r3) - mfspr r0, SPRN_MMCR2 - std r0, THREAD_MMCR2(r3) - mfspr r0, SPRN_MMCRA - std r0, THREAD_MMCRA(r3) END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) #endif @@ -581,20 +567,6 @@ BEGIN_FTR_SECTION ld r0, THREAD_EBBRR(r4) mtspr SPRN_EBBRR, r0 - /* PMU registers made user read/(write) by EBB */ - ld r0, THREAD_SIAR(r4) - mtspr SPRN_SIAR, r0 - ld r0, THREAD_SDAR(r4) - mtspr SPRN_SDAR, r0 - ld r0, THREAD_SIER(r4) - mtspr SPRN_SIER, r0 - ld r0, THREAD_MMCR0(r4) - mtspr SPRN_MMCR0, r0 - ld r0, THREAD_MMCR2(r4) - mtspr SPRN_MMCR2, r0 - ld r0, THREAD_MMCRA(r4) - mtspr SPRN_MMCRA, r0 - ld r0,THREAD_TAR(r4) mtspr SPRN_TAR,r0 END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index e6eba1bf61a..e783453f910 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -454,38 +454,14 @@ BEGIN_FTR_SECTION xori r10,r10,(MSR_FE0|MSR_FE1) mtmsrd r10 sync - fmr 0,0 - fmr 1,1 - fmr 2,2 - fmr 3,3 - fmr 4,4 - fmr 5,5 - fmr 6,6 - fmr 7,7 - fmr 8,8 - fmr 9,9 - fmr 10,10 - fmr 11,11 - fmr 12,12 - fmr 13,13 - fmr 14,14 - fmr 15,15 - fmr 16,16 - fmr 17,17 - fmr 18,18 - fmr 19,19 - fmr 20,20 - fmr 21,21 - fmr 22,22 - fmr 23,23 - fmr 24,24 - fmr 25,25 - fmr 26,26 - fmr 27,27 - fmr 28,28 - fmr 29,29 - fmr 30,30 - fmr 31,31 + +#define FMR2(n) fmr (n), (n) ; fmr n+1, n+1 +#define FMR4(n) FMR2(n) ; FMR2(n+2) +#define FMR8(n) FMR4(n) ; FMR4(n+4) +#define FMR16(n) FMR8(n) ; FMR8(n+8) +#define FMR32(n) FMR16(n) ; FMR16(n+16) + FMR32(0) + FTR_SECTION_ELSE /* * To denormalise we need to move a copy of the register to itself. @@ -495,39 +471,25 @@ FTR_SECTION_ELSE oris r10,r10,MSR_VSX@h mtmsrd r10 sync - XVCPSGNDP(0,0,0) - XVCPSGNDP(1,1,1) - XVCPSGNDP(2,2,2) - XVCPSGNDP(3,3,3) - XVCPSGNDP(4,4,4) - XVCPSGNDP(5,5,5) - XVCPSGNDP(6,6,6) - XVCPSGNDP(7,7,7) - XVCPSGNDP(8,8,8) - XVCPSGNDP(9,9,9) - XVCPSGNDP(10,10,10) - XVCPSGNDP(11,11,11) - XVCPSGNDP(12,12,12) - XVCPSGNDP(13,13,13) - XVCPSGNDP(14,14,14) - XVCPSGNDP(15,15,15) - XVCPSGNDP(16,16,16) - XVCPSGNDP(17,17,17) - XVCPSGNDP(18,18,18) - XVCPSGNDP(19,19,19) - XVCPSGNDP(20,20,20) - XVCPSGNDP(21,21,21) - XVCPSGNDP(22,22,22) - XVCPSGNDP(23,23,23) - XVCPSGNDP(24,24,24) - XVCPSGNDP(25,25,25) - XVCPSGNDP(26,26,26) - XVCPSGNDP(27,27,27) - XVCPSGNDP(28,28,28) - XVCPSGNDP(29,29,29) - XVCPSGNDP(30,30,30) - XVCPSGNDP(31,31,31) + +#define XVCPSGNDP2(n) XVCPSGNDP(n,n,n) ; XVCPSGNDP(n+1,n+1,n+1) +#define XVCPSGNDP4(n) XVCPSGNDP2(n) ; XVCPSGNDP2(n+2) +#define XVCPSGNDP8(n) XVCPSGNDP4(n) ; XVCPSGNDP4(n+4) +#define XVCPSGNDP16(n) XVCPSGNDP8(n) ; XVCPSGNDP8(n+8) +#define XVCPSGNDP32(n) XVCPSGNDP16(n) ; XVCPSGNDP16(n+16) + XVCPSGNDP32(0) + ALT_FTR_SECTION_END_IFCLR(CPU_FTR_ARCH_206) + +BEGIN_FTR_SECTION + b denorm_done +END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S) +/* + * To denormalise we need to move a copy of the register to itself. + * For POWER8 we need to do that for all 64 VSX registers + */ + XVCPSGNDP32(32) +denorm_done: mtspr SPRN_HSRR0,r11 mtcrf 0x80,r9 ld r9,PACA_EXGEN+EX_R9(r13) diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 7f2273cc3c7..eabeec99101 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -827,6 +827,7 @@ static void pcibios_fixup_resources(struct pci_dev *dev) } for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { struct resource *res = dev->resource + i; + struct pci_bus_region reg; if (!res->flags) continue; @@ -835,8 +836,9 @@ static void pcibios_fixup_resources(struct pci_dev *dev) * at 0 as unset as well, except if PCI_PROBE_ONLY is also set * since in that case, we don't want to re-assign anything */ + pcibios_resource_to_bus(dev, ®, res); if (pci_has_flag(PCI_REASSIGN_ALL_RSRC) || - (res->start == 0 && !pci_has_flag(PCI_PROBE_ONLY))) { + (reg.start == 0 && !pci_has_flag(PCI_PROBE_ONLY))) { /* Only print message if not re-assigning */ if (!pci_has_flag(PCI_REASSIGN_ALL_RSRC)) pr_debug("PCI:%s Resource %d %016llx-%016llx [%x] " diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index a902723fdc6..b0f3e3f77e7 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -399,7 +399,8 @@ static inline int __set_dabr(unsigned long dabr, unsigned long dabrx) static inline int __set_dabr(unsigned long dabr, unsigned long dabrx) { mtspr(SPRN_DABR, dabr); - mtspr(SPRN_DABRX, dabrx); + if (cpu_has_feature(CPU_FTR_DABRX)) + mtspr(SPRN_DABRX, dabrx); return 0; } #else diff --git a/arch/powerpc/kvm/44x_tlb.c b/arch/powerpc/kvm/44x_tlb.c index 5dd3ab46997..ed038544814 100644 --- a/arch/powerpc/kvm/44x_tlb.c +++ b/arch/powerpc/kvm/44x_tlb.c @@ -441,6 +441,7 @@ int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws) struct kvmppc_vcpu_44x *vcpu_44x = to_44x(vcpu); struct kvmppc_44x_tlbe *tlbe; unsigned int gtlb_index; + int idx; gtlb_index = kvmppc_get_gpr(vcpu, ra); if (gtlb_index >= KVM44x_GUEST_TLB_SIZE) { @@ -473,6 +474,8 @@ int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws) return EMULATE_FAIL; } + idx = srcu_read_lock(&vcpu->kvm->srcu); + if (tlbe_is_host_safe(vcpu, tlbe)) { gva_t eaddr; gpa_t gpaddr; @@ -489,6 +492,8 @@ int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws) kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index); } + srcu_read_unlock(&vcpu->kvm->srcu, idx); + trace_kvm_gtlb_write(gtlb_index, tlbe->tid, tlbe->word0, tlbe->word1, tlbe->word2); diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 1020119226d..5cd7ad0c117 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -832,6 +832,18 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, { int r = RESUME_HOST; int s; + int idx; + +#ifdef CONFIG_PPC64 + WARN_ON(local_paca->irq_happened != 0); +#endif + + /* + * We enter with interrupts disabled in hardware, but + * we need to call hard_irq_disable anyway to ensure that + * the software state is kept in sync. + */ + hard_irq_disable(); /* update before a new last_exit_type is rewritten */ kvmppc_update_timing_stats(vcpu); @@ -1053,6 +1065,8 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, break; } + idx = srcu_read_lock(&vcpu->kvm->srcu); + gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr); gfn = gpaddr >> PAGE_SHIFT; @@ -1075,6 +1089,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, kvmppc_account_exit(vcpu, MMIO_EXITS); } + srcu_read_unlock(&vcpu->kvm->srcu, idx); break; } @@ -1098,6 +1113,8 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS); + idx = srcu_read_lock(&vcpu->kvm->srcu); + gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr); gfn = gpaddr >> PAGE_SHIFT; @@ -1114,6 +1131,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK); } + srcu_read_unlock(&vcpu->kvm->srcu, idx); break; } diff --git a/arch/powerpc/kvm/e500_mmu.c b/arch/powerpc/kvm/e500_mmu.c index c41a5a96b55..6d6f153b6c1 100644 --- a/arch/powerpc/kvm/e500_mmu.c +++ b/arch/powerpc/kvm/e500_mmu.c @@ -396,6 +396,7 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu) struct kvm_book3e_206_tlb_entry *gtlbe; int tlbsel, esel; int recal = 0; + int idx; tlbsel = get_tlb_tlbsel(vcpu); esel = get_tlb_esel(vcpu, tlbsel); @@ -430,6 +431,8 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu) kvmppc_set_tlb1map_range(vcpu, gtlbe); } + idx = srcu_read_lock(&vcpu->kvm->srcu); + /* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */ if (tlbe_is_host_safe(vcpu, gtlbe)) { u64 eaddr = get_tlb_eaddr(gtlbe); @@ -444,6 +447,8 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu) kvmppc_mmu_map(vcpu, eaddr, raddr, index_of(tlbsel, esel)); } + srcu_read_unlock(&vcpu->kvm->srcu, idx); + kvmppc_set_exit_type(vcpu, EMULATED_TLBWE_EXITS); return EMULATE_DONE; } diff --git a/arch/powerpc/kvm/e500mc.c b/arch/powerpc/kvm/e500mc.c index 753cc99eff2..19c8379575f 100644 --- a/arch/powerpc/kvm/e500mc.c +++ b/arch/powerpc/kvm/e500mc.c @@ -177,8 +177,6 @@ int kvmppc_core_check_processor_compat(void) r = 0; else if (strcmp(cur_cpu_spec->cpu_name, "e5500") == 0) r = 0; - else if (strcmp(cur_cpu_spec->cpu_name, "e6500") == 0) - r = 0; else r = -ENOTSUPP; diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 845c867444e..29c6482890c 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -1758,7 +1758,7 @@ static void perf_event_interrupt(struct pt_regs *regs) } } } - if ((!found) && printk_ratelimit()) + if (!found && !nmi && printk_ratelimit()) printk(KERN_WARNING "Can't find PMC that caused IRQ\n"); /* diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c index 19506f93573..b456b157d33 100644 --- a/arch/powerpc/platforms/pseries/eeh_pseries.c +++ b/arch/powerpc/platforms/pseries/eeh_pseries.c @@ -83,7 +83,11 @@ static int pseries_eeh_init(void) ibm_configure_pe = rtas_token("ibm,configure-pe"); ibm_configure_bridge = rtas_token("ibm,configure-bridge"); - /* necessary sanity check */ + /* + * Necessary sanity check. We needn't check "get-config-addr-info" + * and its variant since the old firmware probably support address + * of domain/bus/slot/function for EEH RTAS operations. + */ if (ibm_set_eeh_option == RTAS_UNKNOWN_SERVICE) { pr_warning("%s: RTAS service <ibm,set-eeh-option> invalid\n", __func__); @@ -102,12 +106,6 @@ static int pseries_eeh_init(void) pr_warning("%s: RTAS service <ibm,slot-error-detail> invalid\n", __func__); return -EINVAL; - } else if (ibm_get_config_addr_info2 == RTAS_UNKNOWN_SERVICE && - ibm_get_config_addr_info == RTAS_UNKNOWN_SERVICE) { - pr_warning("%s: RTAS service <ibm,get-config-addr-info2> and " - "<ibm,get-config-addr-info> invalid\n", - __func__); - return -EINVAL; } else if (ibm_configure_pe == RTAS_UNKNOWN_SERVICE && ibm_configure_bridge == RTAS_UNKNOWN_SERVICE) { pr_warning("%s: RTAS service <ibm,configure-pe> and " diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index ac01463038f..e8b6e5b8932 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -623,7 +623,7 @@ static inline pgste_t pgste_get_lock(pte_t *ptep) " csg %0,%1,%2\n" " jl 0b\n" : "=&d" (old), "=&d" (new), "=Q" (ptep[PTRS_PER_PTE]) - : "Q" (ptep[PTRS_PER_PTE]) : "cc"); + : "Q" (ptep[PTRS_PER_PTE]) : "cc", "memory"); #endif return __pgste(new); } @@ -635,11 +635,19 @@ static inline void pgste_set_unlock(pte_t *ptep, pgste_t pgste) " nihh %1,0xff7f\n" /* clear RCP_PCL_BIT */ " stg %1,%0\n" : "=Q" (ptep[PTRS_PER_PTE]) - : "d" (pgste_val(pgste)), "Q" (ptep[PTRS_PER_PTE]) : "cc"); + : "d" (pgste_val(pgste)), "Q" (ptep[PTRS_PER_PTE]) + : "cc", "memory"); preempt_enable(); #endif } +static inline void pgste_set(pte_t *ptep, pgste_t pgste) +{ +#ifdef CONFIG_PGSTE + *(pgste_t *)(ptep + PTRS_PER_PTE) = pgste; +#endif +} + static inline pgste_t pgste_update_all(pte_t *ptep, pgste_t pgste) { #ifdef CONFIG_PGSTE @@ -704,17 +712,19 @@ static inline void pgste_set_key(pte_t *ptep, pgste_t pgste, pte_t entry) { #ifdef CONFIG_PGSTE unsigned long address; - unsigned long okey, nkey; + unsigned long nkey; if (pte_val(entry) & _PAGE_INVALID) return; + VM_BUG_ON(!(pte_val(*ptep) & _PAGE_INVALID)); address = pte_val(entry) & PAGE_MASK; - okey = nkey = page_get_storage_key(address); - nkey &= ~(_PAGE_ACC_BITS | _PAGE_FP_BIT); - /* Set page access key and fetch protection bit from pgste */ - nkey |= (pgste_val(pgste) & (RCP_ACC_BITS | RCP_FP_BIT)) >> 56; - if (okey != nkey) - page_set_storage_key(address, nkey, 0); + /* + * Set page access key and fetch protection bit from pgste. + * The guest C/R information is still in the PGSTE, set real + * key C/R to 0. + */ + nkey = (pgste_val(pgste) & (RCP_ACC_BITS | RCP_FP_BIT)) >> 56; + page_set_storage_key(address, nkey, 0); #endif } @@ -1099,8 +1109,10 @@ static inline pte_t ptep_modify_prot_start(struct mm_struct *mm, if (!mm_exclusive(mm)) __ptep_ipte(address, ptep); - if (mm_has_pgste(mm)) + if (mm_has_pgste(mm)) { pgste = pgste_update_all(&pte, pgste); + pgste_set(ptep, pgste); + } return pte; } diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c index 29829747725..87acc38f73c 100644 --- a/arch/s390/kernel/dumpstack.c +++ b/arch/s390/kernel/dumpstack.c @@ -74,6 +74,8 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high) static void show_trace(struct task_struct *task, unsigned long *stack) { + const unsigned long frame_size = + STACK_FRAME_OVERHEAD + sizeof(struct pt_regs); register unsigned long __r15 asm ("15"); unsigned long sp; @@ -82,11 +84,13 @@ static void show_trace(struct task_struct *task, unsigned long *stack) sp = task ? task->thread.ksp : __r15; printk("Call Trace:\n"); #ifdef CONFIG_CHECK_STACK - sp = __show_trace(sp, S390_lowcore.panic_stack - 4096, - S390_lowcore.panic_stack); + sp = __show_trace(sp, + S390_lowcore.panic_stack + frame_size - 4096, + S390_lowcore.panic_stack + frame_size); #endif - sp = __show_trace(sp, S390_lowcore.async_stack - ASYNC_SIZE, - S390_lowcore.async_stack); + sp = __show_trace(sp, + S390_lowcore.async_stack + frame_size - ASYNC_SIZE, + S390_lowcore.async_stack + frame_size); if (task) __show_trace(sp, (unsigned long) task_stack_page(task), (unsigned long) task_stack_page(task) + THREAD_SIZE); diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index f7fb58903f6..408e866ae54 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -311,3 +311,67 @@ void measurement_alert_subclass_unregister(void) spin_unlock(&ma_subclass_lock); } EXPORT_SYMBOL(measurement_alert_subclass_unregister); + +void synchronize_irq(unsigned int irq) +{ + /* + * Not needed, the handler is protected by a lock and IRQs that occur + * after the handler is deleted are just NOPs. + */ +} +EXPORT_SYMBOL_GPL(synchronize_irq); + +#ifndef CONFIG_PCI + +/* Only PCI devices have dynamically-defined IRQ handlers */ + +int request_irq(unsigned int irq, irq_handler_t handler, + unsigned long irqflags, const char *devname, void *dev_id) +{ + return -EINVAL; +} +EXPORT_SYMBOL_GPL(request_irq); + +void free_irq(unsigned int irq, void *dev_id) +{ + WARN_ON(1); +} +EXPORT_SYMBOL_GPL(free_irq); + +void enable_irq(unsigned int irq) +{ + WARN_ON(1); +} +EXPORT_SYMBOL_GPL(enable_irq); + +void disable_irq(unsigned int irq) +{ + WARN_ON(1); +} +EXPORT_SYMBOL_GPL(disable_irq); + +#endif /* !CONFIG_PCI */ + +void disable_irq_nosync(unsigned int irq) +{ + disable_irq(irq); +} +EXPORT_SYMBOL_GPL(disable_irq_nosync); + +unsigned long probe_irq_on(void) +{ + return 0; +} +EXPORT_SYMBOL_GPL(probe_irq_on); + +int probe_irq_off(unsigned long val) +{ + return 0; +} +EXPORT_SYMBOL_GPL(probe_irq_off); + +unsigned int probe_irq_mask(unsigned long val) +{ + return val; +} +EXPORT_SYMBOL_GPL(probe_irq_mask); diff --git a/arch/s390/kernel/sclp.S b/arch/s390/kernel/sclp.S index b6506ee32a3..29bd7bec417 100644 --- a/arch/s390/kernel/sclp.S +++ b/arch/s390/kernel/sclp.S @@ -225,7 +225,7 @@ _sclp_print: ahi %r2,1 ltr %r0,%r0 # end of string? jz .LfinalizemtoS4 - chi %r0,0x15 # end of line (NL)? + chi %r0,0x0a # end of line (NL)? jz .LfinalizemtoS4 stc %r0,0(%r6,%r7) # copy to mto la %r11,0(%r6,%r7) diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index e6f15b5d8b7..f1e5be85d59 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -302,15 +302,6 @@ static int zpci_cfg_store(struct zpci_dev *zdev, int offset, u32 val, u8 len) return rc; } -void synchronize_irq(unsigned int irq) -{ - /* - * Not needed, the handler is protected by a lock and IRQs that occur - * after the handler is deleted are just NOPs. - */ -} -EXPORT_SYMBOL_GPL(synchronize_irq); - void enable_irq(unsigned int irq) { struct msi_desc *msi = irq_get_msi_desc(irq); @@ -327,30 +318,6 @@ void disable_irq(unsigned int irq) } EXPORT_SYMBOL_GPL(disable_irq); -void disable_irq_nosync(unsigned int irq) -{ - disable_irq(irq); -} -EXPORT_SYMBOL_GPL(disable_irq_nosync); - -unsigned long probe_irq_on(void) -{ - return 0; -} -EXPORT_SYMBOL_GPL(probe_irq_on); - -int probe_irq_off(unsigned long val) -{ - return 0; -} -EXPORT_SYMBOL_GPL(probe_irq_off); - -unsigned int probe_irq_mask(unsigned long val) -{ - return val; -} -EXPORT_SYMBOL_GPL(probe_irq_mask); - void pcibios_fixup_bus(struct pci_bus *bus) { } diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c index 35ee62fccf9..c205035a6b9 100644 --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -251,51 +251,6 @@ static void find_bits(unsigned long mask, u8 *pos, u8 *size) *size = len; } -static efi_status_t setup_efi_vars(struct boot_params *params) -{ - struct setup_data *data; - struct efi_var_bootdata *efidata; - u64 store_size, remaining_size, var_size; - efi_status_t status; - - if (sys_table->runtime->hdr.revision < EFI_2_00_SYSTEM_TABLE_REVISION) - return EFI_UNSUPPORTED; - - data = (struct setup_data *)(unsigned long)params->hdr.setup_data; - - while (data && data->next) - data = (struct setup_data *)(unsigned long)data->next; - - status = efi_call_phys4((void *)sys_table->runtime->query_variable_info, - EFI_VARIABLE_NON_VOLATILE | - EFI_VARIABLE_BOOTSERVICE_ACCESS | - EFI_VARIABLE_RUNTIME_ACCESS, &store_size, - &remaining_size, &var_size); - - if (status != EFI_SUCCESS) - return status; - - status = efi_call_phys3(sys_table->boottime->allocate_pool, - EFI_LOADER_DATA, sizeof(*efidata), &efidata); - - if (status != EFI_SUCCESS) - return status; - - efidata->data.type = SETUP_EFI_VARS; - efidata->data.len = sizeof(struct efi_var_bootdata) - - sizeof(struct setup_data); - efidata->data.next = 0; - efidata->store_size = store_size; - efidata->remaining_size = remaining_size; - efidata->max_var_size = var_size; - - if (data) - data->next = (unsigned long)efidata; - else - params->hdr.setup_data = (unsigned long)efidata; - -} - static efi_status_t setup_efi_pci(struct boot_params *params) { efi_pci_io_protocol *pci; @@ -1202,8 +1157,6 @@ struct boot_params *efi_main(void *handle, efi_system_table_t *_table, setup_graphics(boot_params); - setup_efi_vars(boot_params); - setup_efi_pci(boot_params); status = efi_call_phys3(sys_table->boottime->allocate_pool, diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index 2fb5d5884e2..60c89f30c72 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -102,13 +102,6 @@ extern void efi_call_phys_epilog(void); extern void efi_unmap_memmap(void); extern void efi_memory_uc(u64 addr, unsigned long size); -struct efi_var_bootdata { - struct setup_data data; - u64 store_size; - u64 remaining_size; - u64 max_var_size; -}; - #ifdef CONFIG_EFI static inline bool efi_is_native(void) diff --git a/arch/x86/include/uapi/asm/bootparam.h b/arch/x86/include/uapi/asm/bootparam.h index 08744242b8d..c15ddaf9071 100644 --- a/arch/x86/include/uapi/asm/bootparam.h +++ b/arch/x86/include/uapi/asm/bootparam.h @@ -6,7 +6,6 @@ #define SETUP_E820_EXT 1 #define SETUP_DTB 2 #define SETUP_PCI 3 -#define SETUP_EFI_VARS 4 /* ram_size flags */ #define RAMDISK_IMAGE_START_MASK 0x07FF diff --git a/arch/x86/kernel/relocate_kernel_64.S b/arch/x86/kernel/relocate_kernel_64.S index 7a6f3b3be3c..f2bb9c96720 100644 --- a/arch/x86/kernel/relocate_kernel_64.S +++ b/arch/x86/kernel/relocate_kernel_64.S @@ -160,7 +160,7 @@ identity_mapped: xorq %rbp, %rbp xorq %r8, %r8 xorq %r9, %r9 - xorq %r10, %r9 + xorq %r10, %r10 xorq %r11, %r11 xorq %r12, %r12 xorq %r13, %r13 diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index eaac1743def..1f34e921977 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -277,6 +277,9 @@ static int __meminit split_mem_range(struct map_range *mr, int nr_range, end_pfn = limit_pfn; nr_range = save_mr(mr, nr_range, start_pfn, end_pfn, 0); + if (!after_bootmem) + adjust_range_page_size_mask(mr, nr_range); + /* try to merge same page size and continuous */ for (i = 0; nr_range > 1 && i < nr_range - 1; i++) { unsigned long old_start; @@ -291,9 +294,6 @@ static int __meminit split_mem_range(struct map_range *mr, int nr_range, nr_range--; } - if (!after_bootmem) - adjust_range_page_size_mask(mr, nr_range); - for (i = 0; i < nr_range; i++) printk(KERN_DEBUG " [mem %#010lx-%#010lx] page %s\n", mr[i].start, mr[i].end - 1, diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 82089d8b195..5ae2eb09419 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -42,7 +42,6 @@ #include <linux/io.h> #include <linux/reboot.h> #include <linux/bcd.h> -#include <linux/ucs2_string.h> #include <asm/setup.h> #include <asm/efi.h> @@ -54,12 +53,12 @@ #define EFI_DEBUG 1 -/* - * There's some additional metadata associated with each - * variable. Intel's reference implementation is 60 bytes - bump that - * to account for potential alignment constraints - */ -#define VAR_METADATA_SIZE 64 +#define EFI_MIN_RESERVE 5120 + +#define EFI_DUMMY_GUID \ + EFI_GUID(0x4424ac57, 0xbe4b, 0x47dd, 0x9e, 0x97, 0xed, 0x50, 0xf0, 0x9f, 0x92, 0xa9) + +static efi_char16_t efi_dummy_name[6] = { 'D', 'U', 'M', 'M', 'Y', 0 }; struct efi __read_mostly efi = { .mps = EFI_INVALID_TABLE_ADDR, @@ -79,13 +78,6 @@ struct efi_memory_map memmap; static struct efi efi_phys __initdata; static efi_system_table_t efi_systab __initdata; -static u64 efi_var_store_size; -static u64 efi_var_remaining_size; -static u64 efi_var_max_var_size; -static u64 boot_used_size; -static u64 boot_var_size; -static u64 active_size; - unsigned long x86_efi_facility; /* @@ -188,53 +180,8 @@ static efi_status_t virt_efi_get_next_variable(unsigned long *name_size, efi_char16_t *name, efi_guid_t *vendor) { - efi_status_t status; - static bool finished = false; - static u64 var_size; - - status = efi_call_virt3(get_next_variable, - name_size, name, vendor); - - if (status == EFI_NOT_FOUND) { - finished = true; - if (var_size < boot_used_size) { - boot_var_size = boot_used_size - var_size; - active_size += boot_var_size; - } else { - printk(KERN_WARNING FW_BUG "efi: Inconsistent initial sizes\n"); - } - } - - if (boot_used_size && !finished) { - unsigned long size = 0; - u32 attr; - efi_status_t s; - void *tmp; - - s = virt_efi_get_variable(name, vendor, &attr, &size, NULL); - - if (s != EFI_BUFFER_TOO_SMALL || !size) - return status; - - tmp = kmalloc(size, GFP_ATOMIC); - - if (!tmp) - return status; - - s = virt_efi_get_variable(name, vendor, &attr, &size, tmp); - - if (s == EFI_SUCCESS && (attr & EFI_VARIABLE_NON_VOLATILE)) { - var_size += size; - var_size += ucs2_strsize(name, 1024); - active_size += size; - active_size += VAR_METADATA_SIZE; - active_size += ucs2_strsize(name, 1024); - } - - kfree(tmp); - } - - return status; + return efi_call_virt3(get_next_variable, + name_size, name, vendor); } static efi_status_t virt_efi_set_variable(efi_char16_t *name, @@ -243,34 +190,9 @@ static efi_status_t virt_efi_set_variable(efi_char16_t *name, unsigned long data_size, void *data) { - efi_status_t status; - u32 orig_attr = 0; - unsigned long orig_size = 0; - - status = virt_efi_get_variable(name, vendor, &orig_attr, &orig_size, - NULL); - - if (status != EFI_BUFFER_TOO_SMALL) - orig_size = 0; - - status = efi_call_virt5(set_variable, - name, vendor, attr, - data_size, data); - - if (status == EFI_SUCCESS) { - if (orig_size) { - active_size -= orig_size; - active_size -= ucs2_strsize(name, 1024); - active_size -= VAR_METADATA_SIZE; - } - if (data_size) { - active_size += data_size; - active_size += ucs2_strsize(name, 1024); - active_size += VAR_METADATA_SIZE; - } - } - - return status; + return efi_call_virt5(set_variable, + name, vendor, attr, + data_size, data); } static efi_status_t virt_efi_query_variable_info(u32 attr, @@ -786,9 +708,6 @@ void __init efi_init(void) char vendor[100] = "unknown"; int i = 0; void *tmp; - struct setup_data *data; - struct efi_var_bootdata *efi_var_data; - u64 pa_data; #ifdef CONFIG_X86_32 if (boot_params.efi_info.efi_systab_hi || @@ -806,22 +725,6 @@ void __init efi_init(void) if (efi_systab_init(efi_phys.systab)) return; - pa_data = boot_params.hdr.setup_data; - while (pa_data) { - data = early_ioremap(pa_data, sizeof(*efi_var_data)); - if (data->type == SETUP_EFI_VARS) { - efi_var_data = (struct efi_var_bootdata *)data; - - efi_var_store_size = efi_var_data->store_size; - efi_var_remaining_size = efi_var_data->remaining_size; - efi_var_max_var_size = efi_var_data->max_var_size; - } - pa_data = data->next; - early_iounmap(data, sizeof(*efi_var_data)); - } - - boot_used_size = efi_var_store_size - efi_var_remaining_size; - set_bit(EFI_SYSTEM_TABLES, &x86_efi_facility); /* @@ -1085,6 +988,13 @@ void __init efi_enter_virtual_mode(void) runtime_code_page_mkexec(); kfree(new_memmap); + + /* clean DUMMY object */ + efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID, + EFI_VARIABLE_NON_VOLATILE | + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + 0, NULL); } /* @@ -1136,33 +1046,65 @@ efi_status_t efi_query_variable_store(u32 attributes, unsigned long size) efi_status_t status; u64 storage_size, remaining_size, max_size; + if (!(attributes & EFI_VARIABLE_NON_VOLATILE)) + return 0; + status = efi.query_variable_info(attributes, &storage_size, &remaining_size, &max_size); if (status != EFI_SUCCESS) return status; - if (!max_size && remaining_size > size) - printk_once(KERN_ERR FW_BUG "Broken EFI implementation" - " is returning MaxVariableSize=0\n"); /* * Some firmware implementations refuse to boot if there's insufficient * space in the variable store. We account for that by refusing the * write if permitting it would reduce the available space to under - * 50%. However, some firmware won't reclaim variable space until - * after the used (not merely the actively used) space drops below - * a threshold. We can approximate that case with the value calculated - * above. If both the firmware and our calculations indicate that the - * available space would drop below 50%, refuse the write. + * 5KB. This figure was provided by Samsung, so should be safe. */ + if ((remaining_size - size < EFI_MIN_RESERVE) && + !efi_no_storage_paranoia) { + + /* + * Triggering garbage collection may require that the firmware + * generate a real EFI_OUT_OF_RESOURCES error. We can force + * that by attempting to use more space than is available. + */ + unsigned long dummy_size = remaining_size + 1024; + void *dummy = kmalloc(dummy_size, GFP_ATOMIC); + + status = efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID, + EFI_VARIABLE_NON_VOLATILE | + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + dummy_size, dummy); + + if (status == EFI_SUCCESS) { + /* + * This should have failed, so if it didn't make sure + * that we delete it... + */ + efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID, + EFI_VARIABLE_NON_VOLATILE | + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + 0, dummy); + } - if (!storage_size || size > remaining_size || - (max_size && size > max_size)) - return EFI_OUT_OF_RESOURCES; + /* + * The runtime code may now have triggered a garbage collection + * run, so check the variable info again + */ + status = efi.query_variable_info(attributes, &storage_size, + &remaining_size, &max_size); - if (!efi_no_storage_paranoia && - ((active_size + size + VAR_METADATA_SIZE > storage_size / 2) && - (remaining_size - size < storage_size / 2))) - return EFI_OUT_OF_RESOURCES; + if (status != EFI_SUCCESS) + return status; + + /* + * There still isn't enough room, so return an error + */ + if (remaining_size - size < EFI_MIN_RESERVE) + return EFI_OUT_OF_RESOURCES; + } return EFI_SUCCESS; } diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c index 590be109089..f7bab68a4b8 100644 --- a/arch/x86/tools/relocs.c +++ b/arch/x86/tools/relocs.c @@ -42,9 +42,6 @@ static const char * const sym_regex_kernel[S_NSYMTYPES] = { "^(xen_irq_disable_direct_reloc$|" "xen_save_fl_direct_reloc$|" "VDSO|" -#if ELF_BITS == 64 - "__vvar_page|" -#endif "__crc_)", /* @@ -72,6 +69,7 @@ static const char * const sym_regex_kernel[S_NSYMTYPES] = { "__per_cpu_load|" "init_per_cpu__.*|" "__end_rodata_hpage_align|" + "__vvar_page|" #endif "_end)$" }; diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index fb44426fe93..d99cae8147d 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -17,6 +17,7 @@ #include <linux/slab.h> #include <linux/smp.h> #include <linux/irq_work.h> +#include <linux/tick.h> #include <asm/paravirt.h> #include <asm/desc.h> @@ -447,6 +448,13 @@ static void __cpuinit xen_play_dead(void) /* used only with HOTPLUG_CPU */ play_dead_common(); HYPERVISOR_vcpu_op(VCPUOP_down, smp_processor_id(), NULL); cpu_bringup(); + /* + * commit 4b0c0f294 (tick: Cleanup NOHZ per cpu data on cpu down) + * clears certain data that the cpu_idle loop (which called us + * and that we return from) expects. The only way to get that + * data back is to call: + */ + tick_nohz_idle_enter(); } #else /* !CONFIG_HOTPLUG_CPU */ |