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authorLinus Torvalds <torvalds@linux-foundation.org>2016-01-29 16:10:16 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-01-29 16:10:16 -0800
commitec1cc55d6fa0b34029419634125fadc77dce1e88 (patch)
treeabdd4c2dbb5707f5d059462f47546b6b1a8f7f6b
parent6b292a8abd8113410a25a179ac13a1a6e1c9d451 (diff)
parent2d19fc639516dc7b4184450b315c931d38549e61 (diff)
Merge tag 'powerpc-4.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman: - Wire up copy_file_range() syscall from Chandan Rajendra - Simplify module TOC handling from Alan Modra - Remove newly added extra definition of pmd_dirty from Stephen Rothwell - Allow user space to map rtas_rmo_buf from Vasant Hegde - Fix PE location code from Gavin Shan - Remove PPMU_HAS_SSLOT flag for Power8 from Madhavan Srinivasan - Fixup _HPAGE_CHG_MASK from Aneesh Kumar K.V * tag 'powerpc-4.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/mm: Fixup _HPAGE_CHG_MASK powerpc/perf: Remove PPMU_HAS_SSLOT flag for Power8 powerpc/eeh: Fix PE location code powerpc/mm: Allow user space to map rtas_rmo_buf powerpc: Remove newly added extra definition of pmd_dirty powerpc: Simplify module TOC handling powerpc: Wire up copy_file_range() syscall
-rw-r--r--arch/powerpc/include/asm/book3s/64/hash.h4
-rw-r--r--arch/powerpc/include/asm/book3s/64/pgtable.h1
-rw-r--r--arch/powerpc/include/asm/systbl.h1
-rw-r--r--arch/powerpc/include/asm/unistd.h2
-rw-r--r--arch/powerpc/include/uapi/asm/unistd.h1
-rw-r--r--arch/powerpc/kernel/eeh_pe.c33
-rw-r--r--arch/powerpc/kernel/misc_64.S28
-rw-r--r--arch/powerpc/kernel/module_64.c12
-rw-r--r--arch/powerpc/mm/mem.c4
-rw-r--r--arch/powerpc/perf/power8-pmu.c2
-rw-r--r--scripts/mod/modpost.c3
11 files changed, 35 insertions, 56 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h
index 06f17e778c27..8d1c8162f0c1 100644
--- a/arch/powerpc/include/asm/book3s/64/hash.h
+++ b/arch/powerpc/include/asm/book3s/64/hash.h
@@ -50,7 +50,9 @@
* set of bits not changed in pmd_modify.
*/
#define _HPAGE_CHG_MASK (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \
- _PAGE_ACCESSED | _PAGE_THP_HUGE)
+ _PAGE_ACCESSED | _PAGE_THP_HUGE | _PAGE_PTE | \
+ _PAGE_SOFT_DIRTY)
+
#ifdef CONFIG_PPC_64K_PAGES
#include <asm/book3s/64/hash-64k.h>
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 8204b0c393aa..8d1c41d28318 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -223,7 +223,6 @@ static inline pte_t *pmdp_ptep(pmd_t *pmd)
#define pmd_pfn(pmd) pte_pfn(pmd_pte(pmd))
#define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd))
#define pmd_young(pmd) pte_young(pmd_pte(pmd))
-#define pmd_dirty(pmd) pte_dirty(pmd_pte(pmd))
#define pmd_mkold(pmd) pte_pmd(pte_mkold(pmd_pte(pmd)))
#define pmd_wrprotect(pmd) pte_pmd(pte_wrprotect(pmd_pte(pmd)))
#define pmd_mkdirty(pmd) pte_pmd(pte_mkdirty(pmd_pte(pmd)))
diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
index 5654ece02c0d..3fa9df70aa20 100644
--- a/arch/powerpc/include/asm/systbl.h
+++ b/arch/powerpc/include/asm/systbl.h
@@ -383,3 +383,4 @@ SYSCALL(ni_syscall)
SYSCALL(ni_syscall)
SYSCALL(ni_syscall)
SYSCALL(mlock2)
+SYSCALL(copy_file_range)
diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h
index 6a5ace5fa0c8..1f2594d45605 100644
--- a/arch/powerpc/include/asm/unistd.h
+++ b/arch/powerpc/include/asm/unistd.h
@@ -12,7 +12,7 @@
#include <uapi/asm/unistd.h>
-#define NR_syscalls 379
+#define NR_syscalls 380
#define __NR__exit __NR_exit
diff --git a/arch/powerpc/include/uapi/asm/unistd.h b/arch/powerpc/include/uapi/asm/unistd.h
index 12a05652377a..940290d45b08 100644
--- a/arch/powerpc/include/uapi/asm/unistd.h
+++ b/arch/powerpc/include/uapi/asm/unistd.h
@@ -389,5 +389,6 @@
#define __NR_userfaultfd 364
#define __NR_membarrier 365
#define __NR_mlock2 378
+#define __NR_copy_file_range 379
#endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */
diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c
index 8654cb166c19..ca9e5371930e 100644
--- a/arch/powerpc/kernel/eeh_pe.c
+++ b/arch/powerpc/kernel/eeh_pe.c
@@ -883,32 +883,29 @@ void eeh_pe_restore_bars(struct eeh_pe *pe)
const char *eeh_pe_loc_get(struct eeh_pe *pe)
{
struct pci_bus *bus = eeh_pe_bus_get(pe);
- struct device_node *dn = pci_bus_to_OF_node(bus);
+ struct device_node *dn;
const char *loc = NULL;
- if (!dn)
- goto out;
+ while (bus) {
+ dn = pci_bus_to_OF_node(bus);
+ if (!dn) {
+ bus = bus->parent;
+ continue;
+ }
- /* PHB PE or root PE ? */
- if (pci_is_root_bus(bus)) {
- loc = of_get_property(dn, "ibm,loc-code", NULL);
- if (!loc)
+ if (pci_is_root_bus(bus))
loc = of_get_property(dn, "ibm,io-base-loc-code", NULL);
+ else
+ loc = of_get_property(dn, "ibm,slot-location-code",
+ NULL);
+
if (loc)
- goto out;
+ return loc;
- /* Check the root port */
- dn = dn->child;
- if (!dn)
- goto out;
+ bus = bus->parent;
}
- loc = of_get_property(dn, "ibm,loc-code", NULL);
- if (!loc)
- loc = of_get_property(dn, "ibm,slot-location-code", NULL);
-
-out:
- return loc ? loc : "N/A";
+ return "N/A";
}
/**
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index db475d41b57a..f28754c497e5 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -701,31 +701,3 @@ _GLOBAL(kexec_sequence)
li r5,0
blr /* image->start(physid, image->start, 0); */
#endif /* CONFIG_KEXEC */
-
-#ifdef CONFIG_MODULES
-#if defined(_CALL_ELF) && _CALL_ELF == 2
-
-#ifdef CONFIG_MODVERSIONS
-.weak __crc_TOC.
-.section "___kcrctab+TOC.","a"
-.globl __kcrctab_TOC.
-__kcrctab_TOC.:
- .llong __crc_TOC.
-#endif
-
-/*
- * Export a fake .TOC. since both modpost and depmod will complain otherwise.
- * Both modpost and depmod strip the leading . so we do the same here.
- */
-.section "__ksymtab_strings","a"
-__kstrtab_TOC.:
- .asciz "TOC."
-
-.section "___ksymtab+TOC.","a"
-/* This symbol name is important: it's used by modpost to find exported syms */
-.globl __ksymtab_TOC.
-__ksymtab_TOC.:
- .llong 0 /* .value */
- .llong __kstrtab_TOC.
-#endif /* ELFv2 */
-#endif /* MODULES */
diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c
index 59663af9315f..ac64ffdb52c8 100644
--- a/arch/powerpc/kernel/module_64.c
+++ b/arch/powerpc/kernel/module_64.c
@@ -326,7 +326,10 @@ static void dedotify_versions(struct modversion_info *vers,
}
}
-/* Undefined symbols which refer to .funcname, hack to funcname (or .TOC.) */
+/*
+ * Undefined symbols which refer to .funcname, hack to funcname. Make .TOC.
+ * seem to be defined (value set later).
+ */
static void dedotify(Elf64_Sym *syms, unsigned int numsyms, char *strtab)
{
unsigned int i;
@@ -334,8 +337,11 @@ static void dedotify(Elf64_Sym *syms, unsigned int numsyms, char *strtab)
for (i = 1; i < numsyms; i++) {
if (syms[i].st_shndx == SHN_UNDEF) {
char *name = strtab + syms[i].st_name;
- if (name[0] == '.')
+ if (name[0] == '.') {
+ if (strcmp(name+1, "TOC.") == 0)
+ syms[i].st_shndx = SHN_ABS;
memmove(name, name+1, strlen(name));
+ }
}
}
}
@@ -351,7 +357,7 @@ static Elf64_Sym *find_dot_toc(Elf64_Shdr *sechdrs,
numsyms = sechdrs[symindex].sh_size / sizeof(Elf64_Sym);
for (i = 1; i < numsyms; i++) {
- if (syms[i].st_shndx == SHN_UNDEF
+ if (syms[i].st_shndx == SHN_ABS
&& strcmp(strtab + syms[i].st_name, "TOC.") == 0)
return &syms[i];
}
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 22d94c3e6fc4..d0f0a514b04e 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -560,12 +560,12 @@ subsys_initcall(add_system_ram_resources);
*/
int devmem_is_allowed(unsigned long pfn)
{
+ if (page_is_rtas_user_buf(pfn))
+ return 1;
if (iomem_is_exclusive(PFN_PHYS(pfn)))
return 0;
if (!page_is_ram(pfn))
return 1;
- if (page_is_rtas_user_buf(pfn))
- return 1;
return 0;
}
#endif /* CONFIG_STRICT_DEVMEM */
diff --git a/arch/powerpc/perf/power8-pmu.c b/arch/powerpc/perf/power8-pmu.c
index 7d5e295255b7..9958ba8bf0d2 100644
--- a/arch/powerpc/perf/power8-pmu.c
+++ b/arch/powerpc/perf/power8-pmu.c
@@ -816,7 +816,7 @@ static struct power_pmu power8_pmu = {
.get_constraint = power8_get_constraint,
.get_alternatives = power8_get_alternatives,
.disable_pmc = power8_disable_pmc,
- .flags = PPMU_HAS_SSLOT | PPMU_HAS_SIER | PPMU_ARCH_207S,
+ .flags = PPMU_HAS_SIER | PPMU_ARCH_207S,
.n_generic = ARRAY_SIZE(power8_generic_events),
.generic_events = power8_generic_events,
.cache_events = &power8_cache_events,
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index e080746e1a6b..48958d3cec9e 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -594,7 +594,8 @@ static int ignore_undef_symbol(struct elf_info *info, const char *symname)
if (strncmp(symname, "_restgpr0_", sizeof("_restgpr0_") - 1) == 0 ||
strncmp(symname, "_savegpr0_", sizeof("_savegpr0_") - 1) == 0 ||
strncmp(symname, "_restvr_", sizeof("_restvr_") - 1) == 0 ||
- strncmp(symname, "_savevr_", sizeof("_savevr_") - 1) == 0)
+ strncmp(symname, "_savevr_", sizeof("_savevr_") - 1) == 0 ||
+ strcmp(symname, ".TOC.") == 0)
return 1;
/* Do not ignore this symbol */
return 0;