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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-09 22:08:15 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-09 22:08:15 +0300 |
| commit | 593c75463ab6d6985cdc9916f3d1c28b5f6340cd (patch) | |
| tree | fead1a52de9609ccd841bc4caa3a2ea44ddff932 /arch/parisc/mm | |
| parent | 565eb5f8c5d379b6a6a3134c76b2fcfecdd007d3 (diff) | |
| parent | b3d5f311d3cfdea0b0e2373409e50423b130f847 (diff) | |
| download | linux-593c75463ab6d6985cdc9916f3d1c28b5f6340cd.tar.xz | |
Merge branch 'parisc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"Dynamic ftrace support by Sven Schnelle and a header guard fix by
Denis Efremov"
* 'parisc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: asm: psw.h: missing header guard
parisc: add dynamic ftrace
compiler.h: add CC_USING_PATCHABLE_FUNCTION_ENTRY
parisc: use pr_debug() in kernel/module.c
parisc: add WARN_ON() to clear_fixmap
parisc: add spinlock to patch function
parisc: add support for patching multiple words
Diffstat (limited to 'arch/parisc/mm')
| -rw-r--r-- | arch/parisc/mm/fixmap.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/parisc/mm/fixmap.c b/arch/parisc/mm/fixmap.c index c8d41b54fb19..474cd241c150 100644 --- a/arch/parisc/mm/fixmap.c +++ b/arch/parisc/mm/fixmap.c @@ -10,7 +10,7 @@ #include <asm/cacheflush.h> #include <asm/fixmap.h> -void set_fixmap(enum fixed_addresses idx, phys_addr_t phys) +void notrace set_fixmap(enum fixed_addresses idx, phys_addr_t phys) { unsigned long vaddr = __fix_to_virt(idx); pgd_t *pgd = pgd_offset_k(vaddr); @@ -28,13 +28,16 @@ void set_fixmap(enum fixed_addresses idx, phys_addr_t phys) flush_tlb_kernel_range(vaddr, vaddr + PAGE_SIZE); } -void clear_fixmap(enum fixed_addresses idx) +void notrace clear_fixmap(enum fixed_addresses idx) { unsigned long vaddr = __fix_to_virt(idx); pgd_t *pgd = pgd_offset_k(vaddr); pmd_t *pmd = pmd_offset(pgd, vaddr); pte_t *pte = pte_offset_kernel(pmd, vaddr); + if (WARN_ON(pte_none(*pte))) + return; + pte_clear(&init_mm, vaddr, pte); flush_tlb_kernel_range(vaddr, vaddr + PAGE_SIZE); |