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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-29 12:25:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-29 12:25:26 -0700 |
| commit | 0d55ec6f3eb727d937a94de8bd3828ef662f871b (patch) | |
| tree | 0eb9762b368f42e40f134d9ecdabb81e0991b2d9 /arch/arm64/include | |
| parent | 44813aa62aa2f6ac98ba3554cf8bc49087098b74 (diff) | |
| parent | 24fe1b0efad4fcdd32ce46cffeab297f22581707 (diff) | |
| download | linux-0d55ec6f3eb727d937a94de8bd3828ef662f871b.tar.gz linux-0d55ec6f3eb727d937a94de8bd3828ef662f871b.tar.bz2 linux-0d55ec6f3eb727d937a94de8bd3828ef662f871b.zip | |
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- The alternatives patching code uses flush_icache_range() which itself
uses alternatives. Change the code to use an unpatched variant of
cache maintenance
- Remove unnecessary ISBs from set_{pte,pmd,pud}
- perf: xgene_pmu: Fix IOB SLOW PMU parser error
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Remove unnecessary ISBs from set_{pte,pmd,pud}
arm64: Avoid flush_icache_range() in alternatives patching code
drivers/perf: xgene_pmu: Fix IOB SLOW PMU parser error
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/alternative.h | 7 | ||||
| -rw-r--r-- | arch/arm64/include/asm/pgtable.h | 6 |
2 files changed, 7 insertions, 6 deletions
diff --git a/arch/arm64/include/asm/alternative.h b/arch/arm64/include/asm/alternative.h index a91933b1e2e6..4b650ec1d7dd 100644 --- a/arch/arm64/include/asm/alternative.h +++ b/arch/arm64/include/asm/alternative.h @@ -28,7 +28,12 @@ typedef void (*alternative_cb_t)(struct alt_instr *alt, __le32 *origptr, __le32 *updptr, int nr_inst); void __init apply_alternatives_all(void); -void apply_alternatives(void *start, size_t length); + +#ifdef CONFIG_MODULES +void apply_alternatives_module(void *start, size_t length); +#else +static inline void apply_alternatives_module(void *start, size_t length) { } +#endif #define ALTINSTR_ENTRY(feature,cb) \ " .word 661b - .\n" /* label */ \ diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 9f82d6b53851..1bdeca8918a6 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -224,10 +224,8 @@ static inline void set_pte(pte_t *ptep, pte_t pte) * Only if the new pte is valid and kernel, otherwise TLB maintenance * or update_mmu_cache() have the necessary barriers. */ - if (pte_valid_not_user(pte)) { + if (pte_valid_not_user(pte)) dsb(ishst); - isb(); - } } extern void __sync_icache_dcache(pte_t pteval); @@ -434,7 +432,6 @@ static inline void set_pmd(pmd_t *pmdp, pmd_t pmd) { WRITE_ONCE(*pmdp, pmd); dsb(ishst); - isb(); } static inline void pmd_clear(pmd_t *pmdp) @@ -485,7 +482,6 @@ static inline void set_pud(pud_t *pudp, pud_t pud) { WRITE_ONCE(*pudp, pud); dsb(ishst); - isb(); } static inline void pud_clear(pud_t *pudp) |