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-rw-r--r--arch/arm/Kconfig6
-rw-r--r--arch/arm/Kconfig.debug2
-rw-r--r--arch/arm/include/asm/io.h75
-rw-r--r--arch/arm/include/asm/memory.h2
-rw-r--r--arch/arm/include/asm/pgtable-2level.h31
-rw-r--r--arch/arm/kernel/armksyms.c6
-rw-r--r--arch/arm/kernel/entry-armv.S2
-rw-r--r--arch/arm/kernel/smp.c4
-rw-r--r--arch/arm/lib/memcpy.S2
-rw-r--r--arch/arm/lib/memset.S2
-rw-r--r--arch/arm/mm/ioremap.c33
-rw-r--r--arch/arm/mm/mmu.c7
-rw-r--r--arch/arm/mm/nommu.c39
-rw-r--r--arch/arm/vdso/vdsomunge.c56
-rw-r--r--arch/powerpc/kernel/idle_power7.S31
-rw-r--r--arch/powerpc/kernel/traps.c2
-rw-r--r--arch/powerpc/mm/fault.c4
-rw-r--r--arch/powerpc/perf/hv-24x7.c2
-rw-r--r--arch/powerpc/platforms/powernv/opal-elog.c16
-rw-r--r--arch/powerpc/platforms/powernv/opal-prd.c9
-rw-r--r--arch/powerpc/sysdev/ppc4xx_hsta_msi.c1
-rw-r--r--arch/tile/lib/memcpy_user_64.c4
-rw-r--r--arch/x86/lib/usercopy.c2
23 files changed, 240 insertions, 98 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a750c1425c3a..1c5021002fe4 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1693,6 +1693,12 @@ config HIGHMEM
config HIGHPTE
bool "Allocate 2nd-level pagetables from highmem"
depends on HIGHMEM
+ help
+ The VM uses one page of physical memory for each page table.
+ For systems with a lot of processes, this can use a lot of
+ precious low memory, eventually leading to low memory being
+ consumed by page tables. Setting this option will allow
+ user-space 2nd level page tables to reside in high memory.
config HW_PERF_EVENTS
bool "Enable hardware performance counter support for perf events"
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index f1b157971366..a2e16f940394 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1635,7 +1635,7 @@ config PID_IN_CONTEXTIDR
config DEBUG_SET_MODULE_RONX
bool "Set loadable kernel module data as NX and text as RO"
- depends on MODULES
+ depends on MODULES && MMU
---help---
This option helps catch unintended modifications to loadable
kernel module's text and read-only data. It also prevents execution
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index 1c3938f26beb..485982084fe9 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -140,16 +140,11 @@ static inline u32 __raw_readl(const volatile void __iomem *addr)
* The _caller variety takes a __builtin_return_address(0) value for
* /proc/vmalloc to use - and should only be used in non-inline functions.
*/
-extern void __iomem *__arm_ioremap_pfn_caller(unsigned long, unsigned long,
- size_t, unsigned int, void *);
extern void __iomem *__arm_ioremap_caller(phys_addr_t, size_t, unsigned int,
void *);
-
extern void __iomem *__arm_ioremap_pfn(unsigned long, unsigned long, size_t, unsigned int);
-extern void __iomem *__arm_ioremap(phys_addr_t, size_t, unsigned int);
extern void __iomem *__arm_ioremap_exec(phys_addr_t, size_t, bool cached);
extern void __iounmap(volatile void __iomem *addr);
-extern void __arm_iounmap(volatile void __iomem *addr);
extern void __iomem * (*arch_ioremap_caller)(phys_addr_t, size_t,
unsigned int, void *);
@@ -321,21 +316,24 @@ extern void _memset_io(volatile void __iomem *, int, size_t);
static inline void memset_io(volatile void __iomem *dst, unsigned c,
size_t count)
{
- memset((void __force *)dst, c, count);
+ extern void mmioset(void *, unsigned int, size_t);
+ mmioset((void __force *)dst, c, count);
}
#define memset_io(dst,c,count) memset_io(dst,c,count)
static inline void memcpy_fromio(void *to, const volatile void __iomem *from,
size_t count)
{
- memcpy(to, (const void __force *)from, count);
+ extern void mmiocpy(void *, const void *, size_t);
+ mmiocpy(to, (const void __force *)from, count);
}
#define memcpy_fromio(to,from,count) memcpy_fromio(to,from,count)
static inline void memcpy_toio(volatile void __iomem *to, const void *from,
size_t count)
{
- memcpy((void __force *)to, from, count);
+ extern void mmiocpy(void *, const void *, size_t);
+ mmiocpy((void __force *)to, from, count);
}
#define memcpy_toio(to,from,count) memcpy_toio(to,from,count)
@@ -348,18 +346,61 @@ static inline void memcpy_toio(volatile void __iomem *to, const void *from,
#endif /* readl */
/*
- * ioremap and friends.
+ * ioremap() and friends.
+ *
+ * ioremap() takes a resource address, and size. Due to the ARM memory
+ * types, it is important to use the correct ioremap() function as each
+ * mapping has specific properties.
+ *
+ * Function Memory type Cacheability Cache hint
+ * ioremap() Device n/a n/a
+ * ioremap_nocache() Device n/a n/a
+ * ioremap_cache() Normal Writeback Read allocate
+ * ioremap_wc() Normal Non-cacheable n/a
+ * ioremap_wt() Normal Non-cacheable n/a
+ *
+ * All device mappings have the following properties:
+ * - no access speculation
+ * - no repetition (eg, on return from an exception)
+ * - number, order and size of accesses are maintained
+ * - unaligned accesses are "unpredictable"
+ * - writes may be delayed before they hit the endpoint device
*
- * ioremap takes a PCI memory address, as specified in
- * Documentation/io-mapping.txt.
+ * ioremap_nocache() is the same as ioremap() as there are too many device
+ * drivers using this for device registers, and documentation which tells
+ * people to use it for such for this to be any different. This is not a
+ * safe fallback for memory-like mappings, or memory regions where the
+ * compiler may generate unaligned accesses - eg, via inlining its own
+ * memcpy.
*
+ * All normal memory mappings have the following properties:
+ * - reads can be repeated with no side effects
+ * - repeated reads return the last value written
+ * - reads can fetch additional locations without side effects
+ * - writes can be repeated (in certain cases) with no side effects
+ * - writes can be merged before accessing the target
+ * - unaligned accesses can be supported
+ * - ordering is not guaranteed without explicit dependencies or barrier
+ * instructions
+ * - writes may be delayed before they hit the endpoint memory
+ *
+ * The cache hint is only a performance hint: CPUs may alias these hints.
+ * Eg, a CPU not implementing read allocate but implementing write allocate
+ * will provide a write allocate mapping instead.
*/
-#define ioremap(cookie,size) __arm_ioremap((cookie), (size), MT_DEVICE)
-#define ioremap_nocache(cookie,size) __arm_ioremap((cookie), (size), MT_DEVICE)
-#define ioremap_cache(cookie,size) __arm_ioremap((cookie), (size), MT_DEVICE_CACHED)
-#define ioremap_wc(cookie,size) __arm_ioremap((cookie), (size), MT_DEVICE_WC)
-#define ioremap_wt(cookie,size) __arm_ioremap((cookie), (size), MT_DEVICE)
-#define iounmap __arm_iounmap
+void __iomem *ioremap(resource_size_t res_cookie, size_t size);
+#define ioremap ioremap
+#define ioremap_nocache ioremap
+
+void __iomem *ioremap_cache(resource_size_t res_cookie, size_t size);
+#define ioremap_cache ioremap_cache
+
+void __iomem *ioremap_wc(resource_size_t res_cookie, size_t size);
+#define ioremap_wc ioremap_wc
+#define ioremap_wt ioremap_wc
+
+void iounmap(volatile void __iomem *iomem_cookie);
+#define iounmap iounmap
/*
* io{read,write}{16,32}be() macros
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index 3a72d69b3255..6f225acc07c5 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -275,7 +275,7 @@ static inline void *phys_to_virt(phys_addr_t x)
*/
#define __pa(x) __virt_to_phys((unsigned long)(x))
#define __va(x) ((void *)__phys_to_virt((phys_addr_t)(x)))
-#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
+#define pfn_to_kaddr(pfn) __va((phys_addr_t)(pfn) << PAGE_SHIFT)
extern phys_addr_t (*arch_virt_to_idmap)(unsigned long x);
diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h
index bfd662e49a25..aeddd28b3595 100644
--- a/arch/arm/include/asm/pgtable-2level.h
+++ b/arch/arm/include/asm/pgtable-2level.h
@@ -129,7 +129,36 @@
/*
* These are the memory types, defined to be compatible with
- * pre-ARMv6 CPUs cacheable and bufferable bits: XXCB
+ * pre-ARMv6 CPUs cacheable and bufferable bits: n/a,n/a,C,B
+ * ARMv6+ without TEX remapping, they are a table index.
+ * ARMv6+ with TEX remapping, they correspond to n/a,TEX(0),C,B
+ *
+ * MT type Pre-ARMv6 ARMv6+ type / cacheable status
+ * UNCACHED Uncached Strongly ordered
+ * BUFFERABLE Bufferable Normal memory / non-cacheable
+ * WRITETHROUGH Writethrough Normal memory / write through
+ * WRITEBACK Writeback Normal memory / write back, read alloc
+ * MINICACHE Minicache N/A
+ * WRITEALLOC Writeback Normal memory / write back, write alloc
+ * DEV_SHARED Uncached Device memory (shared)
+ * DEV_NONSHARED Uncached Device memory (non-shared)
+ * DEV_WC Bufferable Normal memory / non-cacheable
+ * DEV_CACHED Writeback Normal memory / write back, read alloc
+ * VECTORS Variable Normal memory / variable
+ *
+ * All normal memory mappings have the following properties:
+ * - reads can be repeated with no side effects
+ * - repeated reads return the last value written
+ * - reads can fetch additional locations without side effects
+ * - writes can be repeated (in certain cases) with no side effects
+ * - writes can be merged before accessing the target
+ * - unaligned accesses can be supported
+ *
+ * All device mappings have the following properties:
+ * - no access speculation
+ * - no repetition (eg, on return from an exception)
+ * - number, order and size of accesses are maintained
+ * - unaligned accesses are "unpredictable"
*/
#define L_PTE_MT_UNCACHED (_AT(pteval_t, 0x00) << 2) /* 0000 */
#define L_PTE_MT_BUFFERABLE (_AT(pteval_t, 0x01) << 2) /* 0001 */
diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index a88671cfe1ff..5e5a51a99e68 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -50,6 +50,9 @@ extern void __aeabi_ulcmp(void);
extern void fpundefinstr(void);
+void mmioset(void *, unsigned int, size_t);
+void mmiocpy(void *, const void *, size_t);
+
/* platform dependent support */
EXPORT_SYMBOL(arm_delay_ops);
@@ -88,6 +91,9 @@ EXPORT_SYMBOL(memmove);
EXPORT_SYMBOL(memchr);
EXPORT_SYMBOL(__memzero);
+EXPORT_SYMBOL(mmioset);
+EXPORT_SYMBOL(mmiocpy);
+
#ifdef CONFIG_MMU
EXPORT_SYMBOL(copy_page);
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 7dac3086e361..cb4fb1e69778 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -410,7 +410,7 @@ ENDPROC(__fiq_abt)
zero_fp
.if \trace
-#ifdef CONFIG_IRQSOFF_TRACER
+#ifdef CONFIG_TRACE_IRQFLAGS
bl trace_hardirqs_off
#endif
ct_user_exit save = 0
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 90dfbedfbfb8..3d6b7821cff8 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -578,7 +578,7 @@ void handle_IPI(int ipinr, struct pt_regs *regs)
struct pt_regs *old_regs = set_irq_regs(regs);
if ((unsigned)ipinr < NR_IPI) {
- trace_ipi_entry(ipi_types[ipinr]);
+ trace_ipi_entry_rcuidle(ipi_types[ipinr]);
__inc_irq_stat(cpu, ipi_irqs[ipinr]);
}
@@ -637,7 +637,7 @@ void handle_IPI(int ipinr, struct pt_regs *regs)
}
if ((unsigned)ipinr < NR_IPI)
- trace_ipi_exit(ipi_types[ipinr]);
+ trace_ipi_exit_rcuidle(ipi_types[ipinr]);
set_irq_regs(old_regs);
}
diff --git a/arch/arm/lib/memcpy.S b/arch/arm/lib/memcpy.S
index 7797e81e40e0..64111bd4440b 100644
--- a/arch/arm/lib/memcpy.S
+++ b/arch/arm/lib/memcpy.S
@@ -61,8 +61,10 @@
/* Prototype: void *memcpy(void *dest, const void *src, size_t n); */
+ENTRY(mmiocpy)
ENTRY(memcpy)
#include "copy_template.S"
ENDPROC(memcpy)
+ENDPROC(mmiocpy)
diff --git a/arch/arm/lib/memset.S b/arch/arm/lib/memset.S
index a4ee97b5a2bf..3c65e3bd790f 100644
--- a/arch/arm/lib/memset.S
+++ b/arch/arm/lib/memset.S
@@ -16,6 +16,7 @@
.text
.align 5
+ENTRY(mmioset)
ENTRY(memset)
UNWIND( .fnstart )
ands r3, r0, #3 @ 1 unaligned?
@@ -133,3 +134,4 @@ UNWIND( .fnstart )
b 1b
UNWIND( .fnend )
ENDPROC(memset)
+ENDPROC(mmioset)
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index d1e5ad7ab3bc..0c81056c1dd7 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -255,7 +255,7 @@ remap_area_supersections(unsigned long virt, unsigned long pfn,
}
#endif
-void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn,
+static void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn,
unsigned long offset, size_t size, unsigned int mtype, void *caller)
{
const struct mem_type *type;
@@ -363,7 +363,7 @@ __arm_ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
unsigned int mtype)
{
return __arm_ioremap_pfn_caller(pfn, offset, size, mtype,
- __builtin_return_address(0));
+ __builtin_return_address(0));
}
EXPORT_SYMBOL(__arm_ioremap_pfn);
@@ -371,13 +371,26 @@ void __iomem * (*arch_ioremap_caller)(phys_addr_t, size_t,
unsigned int, void *) =
__arm_ioremap_caller;
-void __iomem *
-__arm_ioremap(phys_addr_t phys_addr, size_t size, unsigned int mtype)
+void __iomem *ioremap(resource_size_t res_cookie, size_t size)
+{
+ return arch_ioremap_caller(res_cookie, size, MT_DEVICE,
+ __builtin_return_address(0));
+}
+EXPORT_SYMBOL(ioremap);
+
+void __iomem *ioremap_cache(resource_size_t res_cookie, size_t size)
+{
+ return arch_ioremap_caller(res_cookie, size, MT_DEVICE_CACHED,
+ __builtin_return_address(0));
+}
+EXPORT_SYMBOL(ioremap_cache);
+
+void __iomem *ioremap_wc(resource_size_t res_cookie, size_t size)
{
- return arch_ioremap_caller(phys_addr, size, mtype,
- __builtin_return_address(0));
+ return arch_ioremap_caller(res_cookie, size, MT_DEVICE_WC,
+ __builtin_return_address(0));
}
-EXPORT_SYMBOL(__arm_ioremap);
+EXPORT_SYMBOL(ioremap_wc);
/*
* Remap an arbitrary physical address space into the kernel virtual
@@ -431,11 +444,11 @@ void __iounmap(volatile void __iomem *io_addr)
void (*arch_iounmap)(volatile void __iomem *) = __iounmap;
-void __arm_iounmap(volatile void __iomem *io_addr)
+void iounmap(volatile void __iomem *cookie)
{
- arch_iounmap(io_addr);
+ arch_iounmap(cookie);
}
-EXPORT_SYMBOL(__arm_iounmap);
+EXPORT_SYMBOL(iounmap);
#ifdef CONFIG_PCI
static int pci_ioremap_mem_type = MT_DEVICE;
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 6ca7d9aa896f..870838a46d52 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1072,6 +1072,7 @@ void __init sanity_check_meminfo(void)
int highmem = 0;
phys_addr_t vmalloc_limit = __pa(vmalloc_min - 1) + 1;
struct memblock_region *reg;
+ bool should_use_highmem = false;
for_each_memblock(memory, reg) {
phys_addr_t block_start = reg->base;
@@ -1090,6 +1091,7 @@ void __init sanity_check_meminfo(void)
pr_notice("Ignoring RAM at %pa-%pa (!CONFIG_HIGHMEM)\n",
&block_start, &block_end);
memblock_remove(reg->base, reg->size);
+ should_use_highmem = true;
continue;
}
@@ -1100,6 +1102,7 @@ void __init sanity_check_meminfo(void)
&block_start, &block_end, &vmalloc_limit);
memblock_remove(vmalloc_limit, overlap_size);
block_end = vmalloc_limit;
+ should_use_highmem = true;
}
}
@@ -1134,6 +1137,9 @@ void __init sanity_check_meminfo(void)
}
}
+ if (should_use_highmem)
+ pr_notice("Consider using a HIGHMEM enabled kernel.\n");
+
high_memory = __va(arm_lowmem_limit - 1) + 1;
/*
@@ -1494,6 +1500,7 @@ void __init paging_init(const struct machine_desc *mdesc)
build_mem_type_table();
prepare_page_table();
map_lowmem();
+ memblock_set_current_limit(arm_lowmem_limit);
dma_contiguous_remap();
devicemaps_init(mdesc);
kmap_init();
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index afd7e05d95f1..1dd10936d68d 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -351,30 +351,43 @@ void __iomem *__arm_ioremap_pfn(unsigned long pfn, unsigned long offset,
}
EXPORT_SYMBOL(__arm_ioremap_pfn);
-void __iomem *__arm_ioremap_pfn_caller(unsigned long pfn, unsigned long offset,
- size_t size, unsigned int mtype, void *caller)
+void __iomem *__arm_ioremap_caller(phys_addr_t phys_addr, size_t size,
+ unsigned int mtype, void *caller)
{
- return __arm_ioremap_pfn(pfn, offset, size, mtype);
+ return (void __iomem *)phys_addr;
}
-void __iomem *__arm_ioremap(phys_addr_t phys_addr, size_t size,
- unsigned int mtype)
+void __iomem * (*arch_ioremap_caller)(phys_addr_t, size_t, unsigned int, void *);
+
+void __iomem *ioremap(resource_size_t res_cookie, size_t size)
{
- return (void __iomem *)phys_addr;
+ return __arm_ioremap_caller(res_cookie, size, MT_DEVICE,
+ __builtin_return_address(0));
}
-EXPORT_SYMBOL(__arm_ioremap);
+EXPORT_SYMBOL(ioremap);
-void __iomem * (*arch_ioremap_caller)(phys_addr_t, size_t, unsigned int, void *);
+void __iomem *ioremap_cache(resource_size_t res_cookie, size_t size)
+{
+ return __arm_ioremap_caller(res_cookie, size, MT_DEVICE_CACHED,
+ __builtin_return_address(0));
+}
+EXPORT_SYMBOL(ioremap_cache);
-void __iomem *__arm_ioremap_caller(phys_addr_t phys_addr, size_t size,
- unsigned int mtype, void *caller)
+void __iomem *ioremap_wc(resource_size_t res_cookie, size_t size)
+{
+ return __arm_ioremap_caller(res_cookie, size, MT_DEVICE_WC,
+ __builtin_return_address(0));
+}
+EXPORT_SYMBOL(ioremap_wc);
+
+void __iounmap(volatile void __iomem *addr)
{
- return __arm_ioremap(phys_addr, size, mtype);
}
+EXPORT_SYMBOL(__iounmap);
void (*arch_iounmap)(volatile void __iomem *);
-void __arm_iounmap(volatile void __iomem *addr)
+void iounmap(volatile void __iomem *addr)
{
}
-EXPORT_SYMBOL(__arm_iounmap);
+EXPORT_SYMBOL(iounmap);
diff --git a/arch/arm/vdso/vdsomunge.c b/arch/arm/vdso/vdsomunge.c
index 9005b07296c8..aedec81d1198 100644
--- a/arch/arm/vdso/vdsomunge.c
+++ b/arch/arm/vdso/vdsomunge.c
@@ -45,13 +45,11 @@
* it does.
*/
-#define _GNU_SOURCE
-
#include <byteswap.h>
#include <elf.h>
#include <errno.h>
-#include <error.h>
#include <fcntl.h>
+#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
@@ -82,11 +80,25 @@
#define EF_ARM_ABI_FLOAT_HARD 0x400
#endif
+static int failed;
+static const char *argv0;
static const char *outfile;
+static void fail(const char *fmt, ...)
+{
+ va_list ap;
+
+ failed = 1;
+ fprintf(stderr, "%s: ", argv0);
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
+ va_end(ap);
+ exit(EXIT_FAILURE);
+}
+
static void cleanup(void)
{
- if (error_message_count > 0 && outfile != NULL)
+ if (failed && outfile != NULL)
unlink(outfile);
}
@@ -119,68 +131,66 @@ int main(int argc, char **argv)
int infd;
atexit(cleanup);
+ argv0 = argv[0];
if (argc != 3)
- error(EXIT_FAILURE, 0, "Usage: %s [infile] [outfile]", argv[0]);
+ fail("Usage: %s [infile] [outfile]\n", argv[0]);
infile = argv[1];
outfile = argv[2];
infd = open(infile, O_RDONLY);
if (infd < 0)
- error(EXIT_FAILURE, errno, "Cannot open %s", infile);
+ fail("Cannot open %s: %s\n", infile, strerror(errno));
if (fstat(infd, &stat) != 0)
- error(EXIT_FAILURE, errno, "Failed stat for %s", infile);
+ fail("Failed stat for %s: %s\n", infile, strerror(errno));
inbuf = mmap(NULL, stat.st_size, PROT_READ, MAP_PRIVATE, infd, 0);
if (inbuf == MAP_FAILED)
- error(EXIT_FAILURE, errno, "Failed to map %s", infile);
+ fail("Failed to map %s: %s\n", infile, strerror(errno));
close(infd);
inhdr = inbuf;
if (memcmp(&inhdr->e_ident, ELFMAG, SELFMAG) != 0)
- error(EXIT_FAILURE, 0, "Not an ELF file");
+ fail("Not an ELF file\n");
if (inhdr->e_ident[EI_CLASS] != ELFCLASS32)
- error(EXIT_FAILURE, 0, "Unsupported ELF class");
+ fail("Unsupported ELF class\n");
swap = inhdr->e_ident[EI_DATA] != HOST_ORDER;
if (read_elf_half(inhdr->e_type, swap) != ET_DYN)
- error(EXIT_FAILURE, 0, "Not a shared object");
+ fail("Not a shared object\n");
- if (read_elf_half(inhdr->e_machine, swap) != EM_ARM) {
- error(EXIT_FAILURE, 0, "Unsupported architecture %#x",
- inhdr->e_machine);
- }
+ if (read_elf_half(inhdr->e_machine, swap) != EM_ARM)
+ fail("Unsupported architecture %#x\n", inhdr->e_machine);
e_flags = read_elf_word(inhdr->e_flags, swap);
if (EF_ARM_EABI_VERSION(e_flags) != EF_ARM_EABI_VER5) {
- error(EXIT_FAILURE, 0, "Unsupported EABI version %#x",
- EF_ARM_EABI_VERSION(e_flags));
+ fail("Unsupported EABI version %#x\n",
+ EF_ARM_EABI_VERSION(e_flags));
}
if (e_flags & EF_ARM_ABI_FLOAT_HARD)
- error(EXIT_FAILURE, 0,
- "Unexpected hard-float flag set in e_flags");
+ fail("Unexpected hard-float flag set in e_flags\n");
clear_soft_float = !!(e_flags & EF_ARM_ABI_FLOAT_SOFT);
outfd = open(outfile, O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
if (outfd < 0)
- error(EXIT_FAILURE, errno, "Cannot open %s", outfile);
+ fail("Cannot open %s: %s\n", outfile, strerror(errno));
if (ftruncate(outfd, stat.st_size) != 0)
- error(EXIT_FAILURE, errno, "Cannot truncate %s", outfile);
+ fail("Cannot truncate %s: %s\n", outfile, strerror(errno));
outbuf = mmap(NULL, stat.st_size, PROT_READ | PROT_WRITE, MAP_SHARED,
outfd, 0);
if (outbuf == MAP_FAILED)
- error(EXIT_FAILURE, errno, "Failed to map %s", outfile);
+ fail("Failed to map %s: %s\n", outfile, strerror(errno));
close(outfd);
@@ -195,7 +205,7 @@ int main(int argc, char **argv)
}
if (msync(outbuf, stat.st_size, MS_SYNC) != 0)
- error(EXIT_FAILURE, errno, "Failed to sync %s", outfile);
+ fail("Failed to sync %s: %s\n", outfile, strerror(errno));
return EXIT_SUCCESS;
}
diff --git a/arch/powerpc/kernel/idle_power7.S b/arch/powerpc/kernel/idle_power7.S
index ccde8f084ce4..112ccf497562 100644
--- a/arch/powerpc/kernel/idle_power7.S
+++ b/arch/powerpc/kernel/idle_power7.S
@@ -52,6 +52,22 @@
.text
/*
+ * Used by threads when the lock bit of core_idle_state is set.
+ * Threads will spin in HMT_LOW until the lock bit is cleared.
+ * r14 - pointer to core_idle_state
+ * r15 - used to load contents of core_idle_state
+ */
+
+core_idle_lock_held:
+ HMT_LOW
+3: lwz r15,0(r14)
+ andi. r15,r15,PNV_CORE_IDLE_LOCK_BIT
+ bne 3b
+ HMT_MEDIUM
+ lwarx r15,0,r14
+ blr
+
+/*
* Pass requested state in r3:
* r3 - PNV_THREAD_NAP/SLEEP/WINKLE
*
@@ -150,6 +166,10 @@ power7_enter_nap_mode:
ld r14,PACA_CORE_IDLE_STATE_PTR(r13)
lwarx_loop1:
lwarx r15,0,r14
+
+ andi. r9,r15,PNV_CORE_IDLE_LOCK_BIT
+ bnel core_idle_lock_held
+
andc r15,r15,r7 /* Clear thread bit */
andi. r15,r15,PNV_CORE_IDLE_THREAD_BITS
@@ -294,7 +314,7 @@ lwarx_loop2:
* workaround undo code or resyncing timebase or restoring context
* In either case loop until the lock bit is cleared.
*/
- bne core_idle_lock_held
+ bnel core_idle_lock_held
cmpwi cr2,r15,0
lbz r4,PACA_SUBCORE_SIBLING_MASK(r13)
@@ -319,15 +339,6 @@ lwarx_loop2:
isync
b common_exit
-core_idle_lock_held:
- HMT_LOW
-core_idle_lock_loop:
- lwz r15,0(14)
- andi. r9,r15,PNV_CORE_IDLE_LOCK_BIT
- bne core_idle_lock_loop
- HMT_MEDIUM
- b lwarx_loop2
-
first_thread_in_subcore:
/* First thread in subcore to wakeup */
ori r15,r15,PNV_CORE_IDLE_LOCK_BIT
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 6530f1b8874d..37de90f8a845 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -297,6 +297,8 @@ long machine_check_early(struct pt_regs *regs)
__this_cpu_inc(irq_stat.mce_exceptions);
+ add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE);
+
if (cur_cpu_spec && cur_cpu_spec->machine_check_early)
handled = cur_cpu_spec->machine_check_early(regs);
return handled;
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 6d535973b200..a67c6d781c52 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -529,6 +529,10 @@ void bad_page_fault(struct pt_regs *regs, unsigned long address, int sig)
printk(KERN_ALERT "Unable to handle kernel paging request for "
"instruction fetch\n");
break;
+ case 0x600:
+ printk(KERN_ALERT "Unable to handle kernel paging request for "
+ "unaligned access at address 0x%08lx\n", regs->dar);
+ break;
default:
printk(KERN_ALERT "Unable to handle kernel paging request for "
"unknown fault\n");
diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
index ec2eb20631d1..df956295c2a7 100644
--- a/arch/powerpc/perf/hv-24x7.c
+++ b/arch/powerpc/perf/hv-24x7.c
@@ -320,6 +320,8 @@ static struct attribute *device_str_attr_create_(char *name, char *str)
if (!attr)
return NULL;
+ sysfs_attr_init(&attr->attr.attr);
+
attr->var = str;
attr->attr.attr.name = name;
attr->attr.attr.mode = 0444;
diff --git a/arch/powerpc/platforms/powernv/opal-elog.c b/arch/powerpc/platforms/powernv/opal-elog.c
index 4949ef0d9400..37f959bf392e 100644
--- a/arch/powerpc/platforms/powernv/opal-elog.c
+++ b/arch/powerpc/platforms/powernv/opal-elog.c
@@ -237,7 +237,7 @@ static struct elog_obj *create_elog_obj(uint64_t id, size_t size, uint64_t type)
return elog;
}
-static void elog_work_fn(struct work_struct *work)
+static irqreturn_t elog_event(int irq, void *data)
{
__be64 size;
__be64 id;
@@ -251,7 +251,7 @@ static void elog_work_fn(struct work_struct *work)
rc = opal_get_elog_size(&id, &size, &type);
if (rc != OPAL_SUCCESS) {
pr_err("ELOG: OPAL log info read failed\n");
- return;
+ return IRQ_HANDLED;
}
elog_size = be64_to_cpu(size);
@@ -270,16 +270,10 @@ static void elog_work_fn(struct work_struct *work)
* entries.
*/
if (kset_find_obj(elog_kset, name))
- return;
+ return IRQ_HANDLED;
create_elog_obj(log_id, elog_size, elog_type);
-}
-
-static DECLARE_WORK(elog_work, elog_work_fn);
-static irqreturn_t elog_event(int irq, void *data)
-{
- schedule_work(&elog_work);
return IRQ_HANDLED;
}
@@ -304,8 +298,8 @@ int __init opal_elog_init(void)
return irq;
}
- rc = request_irq(irq, elog_event,
- IRQ_TYPE_LEVEL_HIGH, "opal-elog", NULL);
+ rc = request_threaded_irq(irq, NULL, elog_event,
+ IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "opal-elog", NULL);
if (rc) {
pr_err("%s: Can't request OPAL event irq (%d)\n",
__func__, rc);
diff --git a/arch/powerpc/platforms/powernv/opal-prd.c b/arch/powerpc/platforms/powernv/opal-prd.c
index 46cb3feb0a13..4ece8e40dd54 100644
--- a/arch/powerpc/platforms/powernv/opal-prd.c
+++ b/arch/powerpc/platforms/powernv/opal-prd.c
@@ -112,6 +112,7 @@ static int opal_prd_open(struct inode *inode, struct file *file)
static int opal_prd_mmap(struct file *file, struct vm_area_struct *vma)
{
size_t addr, size;
+ pgprot_t page_prot;
int rc;
pr_devel("opal_prd_mmap(0x%016lx, 0x%016lx, 0x%lx, 0x%lx)\n",
@@ -125,13 +126,11 @@ static int opal_prd_mmap(struct file *file, struct vm_area_struct *vma)
if (!opal_prd_range_is_valid(addr, size))
return -EINVAL;
- vma->vm_page_prot = __pgprot(pgprot_val(phys_mem_access_prot(file,
- vma->vm_pgoff,
- size, vma->vm_page_prot))
- | _PAGE_SPECIAL);
+ page_prot = phys_mem_access_prot(file, vma->vm_pgoff,
+ size, vma->vm_page_prot);
rc = remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, size,
- vma->vm_page_prot);
+ page_prot);
return rc;
}
diff --git a/arch/powerpc/sysdev/ppc4xx_hsta_msi.c b/arch/powerpc/sysdev/ppc4xx_hsta_msi.c
index 2bc33674ebfc..87f9623ca805 100644
--- a/arch/powerpc/sysdev/ppc4xx_hsta_msi.c
+++ b/arch/powerpc/sysdev/ppc4xx_hsta_msi.c
@@ -18,6 +18,7 @@
#include <linux/pci.h>
#include <linux/semaphore.h>
#include <asm/msi_bitmap.h>
+#include <asm/ppc-pci.h>
struct ppc4xx_hsta_msi {
struct device *dev;
diff --git a/arch/tile/lib/memcpy_user_64.c b/arch/tile/lib/memcpy_user_64.c
index 88c7016492c4..97bbb6060b25 100644
--- a/arch/tile/lib/memcpy_user_64.c
+++ b/arch/tile/lib/memcpy_user_64.c
@@ -28,7 +28,7 @@
#define _ST(p, inst, v) \
({ \
asm("1: " #inst " %0, %1;" \
- ".pushsection .coldtext.memcpy,\"ax\";" \
+ ".pushsection .coldtext,\"ax\";" \
"2: { move r0, %2; jrp lr };" \
".section __ex_table,\"a\";" \
".align 8;" \
@@ -41,7 +41,7 @@
({ \
unsigned long __v; \
asm("1: " #inst " %0, %1;" \
- ".pushsection .coldtext.memcpy,\"ax\";" \
+ ".pushsection .coldtext,\"ax\";" \
"2: { move r0, %2; jrp lr };" \
".section __ex_table,\"a\";" \
".align 8;" \
diff --git a/arch/x86/lib/usercopy.c b/arch/x86/lib/usercopy.c
index ddf9ecb53cc3..e342586db6e4 100644
--- a/arch/x86/lib/usercopy.c
+++ b/arch/x86/lib/usercopy.c
@@ -20,7 +20,7 @@ copy_from_user_nmi(void *to, const void __user *from, unsigned long n)
unsigned long ret;
if (__range_not_ok(from, n, TASK_SIZE))
- return 0;
+ return n;
/*
* Even though this function is typically called from NMI/IRQ context
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-19 21:42:49 +0000