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authorLinus Torvalds <torvalds@linux-foundation.org>2021-05-07 12:11:05 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-05-07 12:11:05 -0700
commit51595e3b4943b0079638b2657f603cf5c8ea3a66 (patch)
tree5812f0d4b2b8e49e38a073b80d48e9c166f2a617
parent2059c40aded724b3af139abb55cabeab5e0f5878 (diff)
parentc76fba33467b96b8234a1bbef852cd257c0dca69 (diff)
downloadandroid-dev-51595e3b4943b0079638b2657f603cf5c8ea3a66.tar.gz
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull more arm64 updates from Catalin Marinas: "A mix of fixes and clean-ups that turned up too late for the first pull request: - Restore terminal stack frame records. Their previous removal caused traces which cross secondary_start_kernel to terminate one entry too late, with a spurious "0" entry. - Fix boot warning with pseudo-NMI due to the way we manipulate the PMR register. - ACPI fixes: avoid corruption of interrupt mappings on watchdog probe failure (GTDT), prevent unregistering of GIC SGIs. - Force SPARSEMEM_VMEMMAP as the only memory model, it saves with having to test all the other combinations. - Documentation fixes and updates: tagged address ABI exceptions on brk/mmap/mremap(), event stream frequency, update booting requirements on the configuration of traps" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: kernel: Update the stale comment arm64: Fix the documented event stream frequency arm64: entry: always set GIC_PRIO_PSR_I_SET during entry arm64: Explicitly document boot requirements for SVE arm64: Explicitly require that FPSIMD instructions do not trap arm64: Relax booting requirements for configuration of traps arm64: cpufeatures: use min and max arm64: stacktrace: restore terminal records arm64/vdso: Discard .note.gnu.property sections in vDSO arm64: doc: Add brk/mmap/mremap() to the Tagged Address ABI Exceptions psci: Remove unneeded semicolon ACPI: irq: Prevent unregistering of GIC SGIs ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure arm64: Show three registers per line arm64: remove HAVE_DEBUG_BUGVERBOSE arm64: alternative: simplify passing alt_region arm64: Force SPARSEMEM_VMEMMAP as the only memory management model arm64: vdso32: drop -no-integrated-as flag
-rw-r--r--Documentation/arm64/booting.rst33
-rw-r--r--Documentation/arm64/elf_hwcaps.rst2
-rw-r--r--Documentation/arm64/tagged-address-abi.rst6
-rw-r--r--arch/arm64/Kconfig11
-rw-r--r--arch/arm64/include/asm/daifflags.h3
-rw-r--r--arch/arm64/include/asm/kernel-pgtable.h2
-rw-r--r--arch/arm64/include/asm/memory.h4
-rw-r--r--arch/arm64/include/asm/sparsemem.h3
-rw-r--r--arch/arm64/kernel/alternative.c5
-rw-r--r--arch/arm64/kernel/cpufeature.c5
-rw-r--r--arch/arm64/kernel/cpuidle.c2
-rw-r--r--arch/arm64/kernel/entry-common.c17
-rw-r--r--arch/arm64/kernel/entry.S21
-rw-r--r--arch/arm64/kernel/process.c9
-rw-r--r--arch/arm64/kernel/stacktrace.c10
-rw-r--r--arch/arm64/kernel/vdso/vdso.lds.S8
-rw-r--r--arch/arm64/kernel/vdso32/Makefile8
-rw-r--r--arch/arm64/mm/init.c8
-rw-r--r--arch/arm64/mm/mmu.c2
-rw-r--r--arch/arm64/mm/ptdump.c2
-rw-r--r--drivers/acpi/arm64/gtdt.c10
-rw-r--r--drivers/acpi/irq.c6
-rw-r--r--drivers/firmware/psci/psci.c2
23 files changed, 87 insertions, 92 deletions
diff --git a/Documentation/arm64/booting.rst b/Documentation/arm64/booting.rst
index 4fcc00add117..18b8cc1bf32c 100644
--- a/Documentation/arm64/booting.rst
+++ b/Documentation/arm64/booting.rst
@@ -277,9 +277,40 @@ Before jumping into the kernel, the following conditions must be met:
- SCR_EL3.FGTEn (bit 27) must be initialised to 0b1.
+ For CPUs with Advanced SIMD and floating point support:
+
+ - If EL3 is present:
+
+ - CPTR_EL3.TFP (bit 10) must be initialised to 0b0.
+
+ - If EL2 is present and the kernel is entered at EL1:
+
+ - CPTR_EL2.TFP (bit 10) must be initialised to 0b0.
+
+ For CPUs with the Scalable Vector Extension (FEAT_SVE) present:
+
+ - if EL3 is present:
+
+ - CPTR_EL3.EZ (bit 8) must be initialised to 0b1.
+
+ - ZCR_EL3.LEN must be initialised to the same value for all CPUs the
+ kernel is executed on.
+
+ - If the kernel is entered at EL1 and EL2 is present:
+
+ - CPTR_EL2.TZ (bit 8) must be initialised to 0b0.
+
+ - CPTR_EL2.ZEN (bits 17:16) must be initialised to 0b11.
+
+ - ZCR_EL2.LEN must be initialised to the same value for all CPUs the
+ kernel will execute on.
+
The requirements described above for CPU mode, caches, MMUs, architected
timers, coherency and system registers apply to all CPUs. All CPUs must
-enter the kernel in the same exception level.
+enter the kernel in the same exception level. Where the values documented
+disable traps it is permissible for these traps to be enabled so long as
+those traps are handled transparently by higher exception levels as though
+the values documented were set.
The boot loader is expected to enter the kernel on each CPU in the
following manner:
diff --git a/Documentation/arm64/elf_hwcaps.rst b/Documentation/arm64/elf_hwcaps.rst
index 87821662eeb2..ec1a5a63c1d0 100644
--- a/Documentation/arm64/elf_hwcaps.rst
+++ b/Documentation/arm64/elf_hwcaps.rst
@@ -74,7 +74,7 @@ HWCAP_ASIMD
HWCAP_EVTSTRM
The generic timer is configured to generate events at a frequency of
- approximately 100KHz.
+ approximately 10KHz.
HWCAP_AES
Functionality implied by ID_AA64ISAR0_EL1.AES == 0b0001.
diff --git a/Documentation/arm64/tagged-address-abi.rst b/Documentation/arm64/tagged-address-abi.rst
index cbc4d4500241..459e6b66ff68 100644
--- a/Documentation/arm64/tagged-address-abi.rst
+++ b/Documentation/arm64/tagged-address-abi.rst
@@ -113,6 +113,12 @@ ABI relaxation:
- ``shmat()`` and ``shmdt()``.
+- ``brk()`` (since kernel v5.6).
+
+- ``mmap()`` (since kernel v5.6).
+
+- ``mremap()``, the ``new_address`` argument (since kernel v5.6).
+
Any attempt to use non-zero tagged pointers may result in an error code
being returned, a (fatal) signal being raised, or other modes of
failure.
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index f0b17d758912..9f1d8566bbf9 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -170,7 +170,6 @@ config ARM64
select HAVE_CMPXCHG_DOUBLE
select HAVE_CMPXCHG_LOCAL
select HAVE_CONTEXT_TRACKING
- select HAVE_DEBUG_BUGVERBOSE
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_CONTIGUOUS
select HAVE_DYNAMIC_FTRACE
@@ -1061,15 +1060,7 @@ source "kernel/Kconfig.hz"
config ARCH_SPARSEMEM_ENABLE
def_bool y
select SPARSEMEM_VMEMMAP_ENABLE
-
-config ARCH_SPARSEMEM_DEFAULT
- def_bool ARCH_SPARSEMEM_ENABLE
-
-config ARCH_SELECT_MEMORY_MODEL
- def_bool ARCH_SPARSEMEM_ENABLE
-
-config ARCH_FLATMEM_ENABLE
- def_bool !NUMA
+ select SPARSEMEM_VMEMMAP
config HW_PERF_EVENTS
def_bool y
diff --git a/arch/arm64/include/asm/daifflags.h b/arch/arm64/include/asm/daifflags.h
index 5eb7af9c4557..55f57dfa8e2f 100644
--- a/arch/arm64/include/asm/daifflags.h
+++ b/arch/arm64/include/asm/daifflags.h
@@ -131,6 +131,9 @@ static inline void local_daif_inherit(struct pt_regs *regs)
if (interrupts_enabled(regs))
trace_hardirqs_on();
+ if (system_uses_irq_prio_masking())
+ gic_write_pmr(regs->pmr_save);
+
/*
* We can't use local_daif_restore(regs->pstate) here as
* system_has_prio_mask_debugging() won't restore the I bit if it can
diff --git a/arch/arm64/include/asm/kernel-pgtable.h b/arch/arm64/include/asm/kernel-pgtable.h
index 587c504a4c8b..d44df9d62fc9 100644
--- a/arch/arm64/include/asm/kernel-pgtable.h
+++ b/arch/arm64/include/asm/kernel-pgtable.h
@@ -136,7 +136,7 @@
* has a direct correspondence, and needs to appear sufficiently aligned
* in the virtual address space.
*/
-#if defined(CONFIG_SPARSEMEM_VMEMMAP) && ARM64_MEMSTART_SHIFT < SECTION_SIZE_BITS
+#if ARM64_MEMSTART_SHIFT < SECTION_SIZE_BITS
#define ARM64_MEMSTART_ALIGN (1UL << SECTION_SIZE_BITS)
#else
#define ARM64_MEMSTART_ALIGN (1UL << ARM64_MEMSTART_SHIFT)
diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
index 6d9915d066fa..87b90dc27a43 100644
--- a/arch/arm64/include/asm/memory.h
+++ b/arch/arm64/include/asm/memory.h
@@ -345,7 +345,7 @@ static inline void *phys_to_virt(phys_addr_t x)
*/
#define ARCH_PFN_OFFSET ((unsigned long)PHYS_PFN_OFFSET)
-#if !defined(CONFIG_SPARSEMEM_VMEMMAP) || defined(CONFIG_DEBUG_VIRTUAL)
+#if defined(CONFIG_DEBUG_VIRTUAL)
#define page_to_virt(x) ({ \
__typeof__(x) __page = x; \
void *__addr = __va(page_to_phys(__page)); \
@@ -365,7 +365,7 @@ static inline void *phys_to_virt(phys_addr_t x)
u64 __addr = VMEMMAP_START + (__idx * sizeof(struct page)); \
(struct page *)__addr; \
})
-#endif /* !CONFIG_SPARSEMEM_VMEMMAP || CONFIG_DEBUG_VIRTUAL */
+#endif /* CONFIG_DEBUG_VIRTUAL */
#define virt_addr_valid(addr) ({ \
__typeof__(addr) __addr = __tag_reset(addr); \
diff --git a/arch/arm64/include/asm/sparsemem.h b/arch/arm64/include/asm/sparsemem.h
index eb4a75d720ed..4b73463423c3 100644
--- a/arch/arm64/include/asm/sparsemem.h
+++ b/arch/arm64/include/asm/sparsemem.h
@@ -5,7 +5,6 @@
#ifndef __ASM_SPARSEMEM_H
#define __ASM_SPARSEMEM_H
-#ifdef CONFIG_SPARSEMEM
#define MAX_PHYSMEM_BITS CONFIG_ARM64_PA_BITS
/*
@@ -27,6 +26,4 @@
#define SECTION_SIZE_BITS 27
#endif /* CONFIG_ARM64_64K_PAGES */
-#endif /* CONFIG_SPARSEMEM*/
-
#endif
diff --git a/arch/arm64/kernel/alternative.c b/arch/arm64/kernel/alternative.c
index abc84636af07..c906d20c7b52 100644
--- a/arch/arm64/kernel/alternative.c
+++ b/arch/arm64/kernel/alternative.c
@@ -133,11 +133,10 @@ static void clean_dcache_range_nopatch(u64 start, u64 end)
} while (cur += d_size, cur < end);
}
-static void __nocfi __apply_alternatives(void *alt_region, bool is_module,
- unsigned long *feature_mask)
+static void __nocfi __apply_alternatives(struct alt_region *region, bool is_module,
+ unsigned long *feature_mask)
{
struct alt_instr *alt;
- struct alt_region *region = alt_region;
__le32 *origptr, *updptr;
alternative_cb_t alt_cb;
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 30c82d38c189..efed2830d141 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -68,6 +68,7 @@
#include <linux/sort.h>
#include <linux/stop_machine.h>
#include <linux/types.h>
+#include <linux/minmax.h>
#include <linux/mm.h>
#include <linux/cpu.h>
#include <linux/kasan.h>
@@ -694,14 +695,14 @@ static s64 arm64_ftr_safe_value(const struct arm64_ftr_bits *ftrp, s64 new,
ret = ftrp->safe_val;
break;
case FTR_LOWER_SAFE:
- ret = new < cur ? new : cur;
+ ret = min(new, cur);
break;
case FTR_HIGHER_OR_ZERO_SAFE:
if (!cur || !new)
break;
fallthrough;
case FTR_HIGHER_SAFE:
- ret = new > cur ? new : cur;
+ ret = max(new, cur);
break;
default:
BUG();
diff --git a/arch/arm64/kernel/cpuidle.c b/arch/arm64/kernel/cpuidle.c
index b512b5503f6e..03991eeff643 100644
--- a/arch/arm64/kernel/cpuidle.c
+++ b/arch/arm64/kernel/cpuidle.c
@@ -29,7 +29,7 @@ int arm_cpuidle_init(unsigned int cpu)
/**
* arm_cpuidle_suspend() - function to enter a low-power idle state
- * @arg: argument to pass to CPU suspend operations
+ * @index: argument to pass to CPU suspend operations
*
* Return: 0 on success, -EOPNOTSUPP if CPU suspend hook not initialized, CPU
* operations back-end error code otherwise.
diff --git a/arch/arm64/kernel/entry-common.c b/arch/arm64/kernel/entry-common.c
index a1ec351c36bd..340d04e13617 100644
--- a/arch/arm64/kernel/entry-common.c
+++ b/arch/arm64/kernel/entry-common.c
@@ -230,14 +230,6 @@ static void noinstr el1_dbg(struct pt_regs *regs, unsigned long esr)
{
unsigned long far = read_sysreg(far_el1);
- /*
- * The CPU masked interrupts, and we are leaving them masked during
- * do_debug_exception(). Update PMR as if we had called
- * local_daif_mask().
- */
- if (system_uses_irq_prio_masking())
- gic_write_pmr(GIC_PRIO_IRQON | GIC_PRIO_PSR_I_SET);
-
arm64_enter_el1_dbg(regs);
if (!cortex_a76_erratum_1463225_debug_handler(regs))
do_debug_exception(far, esr, regs);
@@ -404,9 +396,6 @@ static void noinstr el0_dbg(struct pt_regs *regs, unsigned long esr)
/* Only watchpoints write FAR_EL1, otherwise its UNKNOWN */
unsigned long far = read_sysreg(far_el1);
- if (system_uses_irq_prio_masking())
- gic_write_pmr(GIC_PRIO_IRQON | GIC_PRIO_PSR_I_SET);
-
enter_from_user_mode();
do_debug_exception(far, esr, regs);
local_daif_restore(DAIF_PROCCTX_NOIRQ);
@@ -414,9 +403,6 @@ static void noinstr el0_dbg(struct pt_regs *regs, unsigned long esr)
static void noinstr el0_svc(struct pt_regs *regs)
{
- if (system_uses_irq_prio_masking())
- gic_write_pmr(GIC_PRIO_IRQON | GIC_PRIO_PSR_I_SET);
-
enter_from_user_mode();
cortex_a76_erratum_1463225_svc_handler();
do_el0_svc(regs);
@@ -492,9 +478,6 @@ static void noinstr el0_cp15(struct pt_regs *regs, unsigned long esr)
static void noinstr el0_svc_compat(struct pt_regs *regs)
{
- if (system_uses_irq_prio_masking())
- gic_write_pmr(GIC_PRIO_IRQON | GIC_PRIO_PSR_I_SET);
-
enter_from_user_mode();
cortex_a76_erratum_1463225_svc_handler();
do_el0_svc_compat(regs);
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index 4ac5455c0ead..3513984a88bd 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -285,16 +285,16 @@ alternative_else_nop_endif
stp lr, x21, [sp, #S_LR]
/*
- * For exceptions from EL0, terminate the callchain here.
+ * For exceptions from EL0, create a terminal frame record.
* For exceptions from EL1, create a synthetic frame record so the
* interrupted code shows up in the backtrace.
*/
.if \el == 0
- mov x29, xzr
+ stp xzr, xzr, [sp, #S_STACKFRAME]
.else
stp x29, x22, [sp, #S_STACKFRAME]
- add x29, sp, #S_STACKFRAME
.endif
+ add x29, sp, #S_STACKFRAME
#ifdef CONFIG_ARM64_SW_TTBR0_PAN
alternative_if_not ARM64_HAS_PAN
@@ -314,6 +314,8 @@ alternative_else_nop_endif
alternative_if ARM64_HAS_IRQ_PRIO_MASKING
mrs_s x20, SYS_ICC_PMR_EL1
str x20, [sp, #S_PMR_SAVE]
+ mov x20, #GIC_PRIO_IRQON | GIC_PRIO_PSR_I_SET
+ msr_s SYS_ICC_PMR_EL1, x20
alternative_else_nop_endif
/* Re-enable tag checking (TCO set on exception entry) */
@@ -550,17 +552,7 @@ tsk .req x28 // current thread_info
#endif
.endm
- .macro gic_prio_irq_setup, pmr:req, tmp:req
-#ifdef CONFIG_ARM64_PSEUDO_NMI
- alternative_if ARM64_HAS_IRQ_PRIO_MASKING
- orr \tmp, \pmr, #GIC_PRIO_PSR_I_SET
- msr_s SYS_ICC_PMR_EL1, \tmp
- alternative_else_nop_endif
-#endif
- .endm
-
.macro el1_interrupt_handler, handler:req
- gic_prio_irq_setup pmr=x20, tmp=x1
enable_da
mov x0, sp
@@ -590,7 +582,6 @@ alternative_else_nop_endif
.endm
.macro el0_interrupt_handler, handler:req
- gic_prio_irq_setup pmr=x20, tmp=x0
user_exit_irqoff
enable_da
@@ -788,7 +779,6 @@ SYM_CODE_END(el0_fiq)
SYM_CODE_START_LOCAL(el1_error)
kernel_entry 1
mrs x1, esr_el1
- gic_prio_kentry_setup tmp=x2
enable_dbg
mov x0, sp
bl do_serror
@@ -799,7 +789,6 @@ SYM_CODE_START_LOCAL(el0_error)
kernel_entry 0
el0_error_naked:
mrs x25, esr_el1
- gic_prio_kentry_setup tmp=x2
user_exit_irqoff
enable_dbg
mov x0, sp
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index cbf52109583b..b4bb67f17a2c 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -294,13 +294,10 @@ void __show_regs(struct pt_regs *regs)
i = top_reg;
while (i >= 0) {
- printk("x%-2d: %016llx ", i, regs->regs[i]);
- i--;
+ printk("x%-2d: %016llx", i, regs->regs[i]);
- if (i % 2 == 0) {
- pr_cont("x%-2d: %016llx ", i, regs->regs[i]);
- i--;
- }
+ while (i-- % 3)
+ pr_cont(" x%-2d: %016llx", i, regs->regs[i]);
pr_cont("\n");
}
diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c
index 84b676bcf867..de07147a7926 100644
--- a/arch/arm64/kernel/stacktrace.c
+++ b/arch/arm64/kernel/stacktrace.c
@@ -68,10 +68,6 @@ int notrace unwind_frame(struct task_struct *tsk, struct stackframe *frame)
unsigned long fp = frame->fp;
struct stack_info info;
- /* Terminal record; nothing to unwind */
- if (!fp)
- return -ENOENT;
-
if (fp & 0xf)
return -EINVAL;
@@ -132,6 +128,12 @@ int notrace unwind_frame(struct task_struct *tsk, struct stackframe *frame)
frame->pc = ptrauth_strip_insn_pac(frame->pc);
+ /*
+ * This is a terminal record, so we have finished unwinding.
+ */
+ if (!frame->fp && !frame->pc)
+ return -ENOENT;
+
return 0;
}
NOKPROBE_SYMBOL(unwind_frame);
diff --git a/arch/arm64/kernel/vdso/vdso.lds.S b/arch/arm64/kernel/vdso/vdso.lds.S
index 61dbb4c838ef..a5e61e09ea92 100644
--- a/arch/arm64/kernel/vdso/vdso.lds.S
+++ b/arch/arm64/kernel/vdso/vdso.lds.S
@@ -31,6 +31,13 @@ SECTIONS
.gnu.version_d : { *(.gnu.version_d) }
.gnu.version_r : { *(.gnu.version_r) }
+ /*
+ * Discard .note.gnu.property sections which are unused and have
+ * different alignment requirement from vDSO note sections.
+ */
+ /DISCARD/ : {
+ *(.note.GNU-stack .note.gnu.property)
+ }
.note : { *(.note.*) } :text :note
. = ALIGN(16);
@@ -48,7 +55,6 @@ SECTIONS
PROVIDE(end = .);
/DISCARD/ : {
- *(.note.GNU-stack)
*(.data .data.* .gnu.linkonce.d.* .sdata*)
*(.bss .sbss .dynbss .dynsbss)
*(.eh_frame .eh_frame_hdr)
diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile
index 789ad420f16b..3dba0c4f8f42 100644
--- a/arch/arm64/kernel/vdso32/Makefile
+++ b/arch/arm64/kernel/vdso32/Makefile
@@ -10,15 +10,7 @@ include $(srctree)/lib/vdso/Makefile
# Same as cc-*option, but using CC_COMPAT instead of CC
ifeq ($(CONFIG_CC_IS_CLANG), y)
-COMPAT_GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE_COMPAT)elfedit))
-COMPAT_GCC_TOOLCHAIN := $(realpath $(COMPAT_GCC_TOOLCHAIN_DIR)/..)
-
CC_COMPAT_CLANG_FLAGS := --target=$(notdir $(CROSS_COMPILE_COMPAT:%-=%))
-CC_COMPAT_CLANG_FLAGS += --prefix=$(COMPAT_GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE_COMPAT))
-CC_COMPAT_CLANG_FLAGS += -no-integrated-as -Qunused-arguments
-ifneq ($(COMPAT_GCC_TOOLCHAIN),)
-CC_COMPAT_CLANG_FLAGS += --gcc-toolchain=$(COMPAT_GCC_TOOLCHAIN)
-endif
CC_COMPAT ?= $(CC)
CC_COMPAT += $(CC_COMPAT_CLANG_FLAGS)
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 0696a459ea95..16a2b2b1c54d 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -221,6 +221,7 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max)
int pfn_valid(unsigned long pfn)
{
phys_addr_t addr = PFN_PHYS(pfn);
+ struct mem_section *ms;
/*
* Ensure the upper PAGE_SHIFT bits are clear in the
@@ -231,10 +232,6 @@ int pfn_valid(unsigned long pfn)
if (PHYS_PFN(addr) != pfn)
return 0;
-#ifdef CONFIG_SPARSEMEM
-{
- struct mem_section *ms;
-
if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
return 0;
@@ -253,8 +250,7 @@ int pfn_valid(unsigned long pfn)
*/
if (!early_section(ms))
return pfn_section_valid(ms, pfn);
-}
-#endif
+
return memblock_is_map_memory(addr);
}
EXPORT_SYMBOL(pfn_valid);
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index 70fa3cdbe841..6dd9369e3ea0 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -1113,7 +1113,6 @@ static void free_empty_tables(unsigned long addr, unsigned long end,
}
#endif
-#ifdef CONFIG_SPARSEMEM_VMEMMAP
#if !ARM64_SWAPPER_USES_SECTION_MAPS
int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
struct vmem_altmap *altmap)
@@ -1177,7 +1176,6 @@ void vmemmap_free(unsigned long start, unsigned long end,
free_empty_tables(start, end, VMEMMAP_START, VMEMMAP_END);
#endif
}
-#endif /* CONFIG_SPARSEMEM_VMEMMAP */
static inline pud_t *fixmap_pud(unsigned long addr)
{
diff --git a/arch/arm64/mm/ptdump.c b/arch/arm64/mm/ptdump.c
index a50e92ea1878..a1937dfff31c 100644
--- a/arch/arm64/mm/ptdump.c
+++ b/arch/arm64/mm/ptdump.c
@@ -51,10 +51,8 @@ static struct addr_marker address_markers[] = {
{ FIXADDR_TOP, "Fixmap end" },
{ PCI_IO_START, "PCI I/O start" },
{ PCI_IO_END, "PCI I/O end" },
-#ifdef CONFIG_SPARSEMEM_VMEMMAP
{ VMEMMAP_START, "vmemmap start" },
{ VMEMMAP_START + VMEMMAP_SIZE, "vmemmap end" },
-#endif
{ -1, NULL },
};
diff --git a/drivers/acpi/arm64/gtdt.c b/drivers/acpi/arm64/gtdt.c
index f2d0e5915dab..0a0a982f9c28 100644
--- a/drivers/acpi/arm64/gtdt.c
+++ b/drivers/acpi/arm64/gtdt.c
@@ -329,7 +329,7 @@ static int __init gtdt_import_sbsa_gwdt(struct acpi_gtdt_watchdog *wd,
int index)
{
struct platform_device *pdev;
- int irq = map_gt_gsi(wd->timer_interrupt, wd->timer_flags);
+ int irq;
/*
* According to SBSA specification the size of refresh and control
@@ -338,7 +338,7 @@ static int __init gtdt_import_sbsa_gwdt(struct acpi_gtdt_watchdog *wd,
struct resource res[] = {
DEFINE_RES_MEM(wd->control_frame_address, SZ_4K),
DEFINE_RES_MEM(wd->refresh_frame_address, SZ_4K),
- DEFINE_RES_IRQ(irq),
+ {},
};
int nr_res = ARRAY_SIZE(res);
@@ -348,10 +348,11 @@ static int __init gtdt_import_sbsa_gwdt(struct acpi_gtdt_watchdog *wd,
if (!(wd->refresh_frame_address && wd->control_frame_address)) {
pr_err(FW_BUG "failed to get the Watchdog base address.\n");
- acpi_unregister_gsi(wd->timer_interrupt);
return -EINVAL;
}
+ irq = map_gt_gsi(wd->timer_interrupt, wd->timer_flags);
+ res[2] = (struct resource)DEFINE_RES_IRQ(irq);
if (irq <= 0) {
pr_warn("failed to map the Watchdog interrupt.\n");
nr_res--;
@@ -364,7 +365,8 @@ static int __init gtdt_import_sbsa_gwdt(struct acpi_gtdt_watchdog *wd,
*/
pdev = platform_device_register_simple("sbsa-gwdt", index, res, nr_res);
if (IS_ERR(pdev)) {
- acpi_unregister_gsi(wd->timer_interrupt);
+ if (irq > 0)
+ acpi_unregister_gsi(wd->timer_interrupt);
return PTR_ERR(pdev);
}
diff --git a/drivers/acpi/irq.c b/drivers/acpi/irq.c
index e209081d644b..c68e694fca26 100644
--- a/drivers/acpi/irq.c
+++ b/drivers/acpi/irq.c
@@ -75,8 +75,12 @@ void acpi_unregister_gsi(u32 gsi)
{
struct irq_domain *d = irq_find_matching_fwnode(acpi_gsi_domain_id,
DOMAIN_BUS_ANY);
- int irq = irq_find_mapping(d, gsi);
+ int irq;
+ if (WARN_ON(acpi_irq_model == ACPI_IRQ_MODEL_GIC && gsi < 16))
+ return;
+
+ irq = irq_find_mapping(d, gsi);
irq_dispose_mapping(irq);
}
EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index f5bd0dcbbb1c..3c1c5daf6df2 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -139,7 +139,7 @@ static int psci_to_linux_errno(int errno)
return -EINVAL;
case PSCI_RET_DENIED:
return -EPERM;
- };
+ }
return -EINVAL;
}