| Message ID | 20190610043838.27916-2-npiggin@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/4] mm: Move ioremap page table mapping function to mm/ | expand |
On 06/10/2019 10:08 AM, Nicholas Piggin wrote: > Applying huge vmap to vmalloc requires vmalloc_to_page to walk huge > pages. Define pud_large and pmd_large to support this. > > Signed-off-by: Nicholas Piggin <npiggin@gmail.com> > --- > arch/arm64/include/asm/pgtable.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h > index 2c41b04708fe..30fe7b344bf7 100644 > --- a/arch/arm64/include/asm/pgtable.h > +++ b/arch/arm64/include/asm/pgtable.h > @@ -428,6 +428,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, > PMD_TYPE_TABLE) > #define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \ > PMD_TYPE_SECT) > +#define pmd_large(pmd) pmd_sect(pmd) > > #if defined(CONFIG_ARM64_64K_PAGES) || CONFIG_PGTABLE_LEVELS < 3 > #define pud_sect(pud) (0) > @@ -438,6 +439,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, > #define pud_table(pud) ((pud_val(pud) & PUD_TYPE_MASK) == \ > PUD_TYPE_TABLE) > #endif > +#define pud_large(pud) pud_sect(pud) > > extern pgd_t init_pg_dir[PTRS_PER_PGD]; > extern pgd_t init_pg_end[]; Another series (I guess not merged yet) is trying to add these wrappers on arm64 (https://patchwork.kernel.org/patch/10883887/).
Anshuman Khandual's on June 10, 2019 3:47 pm: > > > On 06/10/2019 10:08 AM, Nicholas Piggin wrote: >> Applying huge vmap to vmalloc requires vmalloc_to_page to walk huge >> pages. Define pud_large and pmd_large to support this. >> >> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> >> --- >> arch/arm64/include/asm/pgtable.h | 2 ++ >> 1 file changed, 2 insertions(+) >> >> diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h >> index 2c41b04708fe..30fe7b344bf7 100644 >> --- a/arch/arm64/include/asm/pgtable.h >> +++ b/arch/arm64/include/asm/pgtable.h >> @@ -428,6 +428,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, >> PMD_TYPE_TABLE) >> #define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \ >> PMD_TYPE_SECT) >> +#define pmd_large(pmd) pmd_sect(pmd) >> >> #if defined(CONFIG_ARM64_64K_PAGES) || CONFIG_PGTABLE_LEVELS < 3 >> #define pud_sect(pud) (0) >> @@ -438,6 +439,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, >> #define pud_table(pud) ((pud_val(pud) & PUD_TYPE_MASK) == \ >> PUD_TYPE_TABLE) >> #endif >> +#define pud_large(pud) pud_sect(pud) >> >> extern pgd_t init_pg_dir[PTRS_PER_PGD]; >> extern pgd_t init_pg_end[]; > > Another series (I guess not merged yet) is trying to add these wrappers > on arm64 (https://patchwork.kernel.org/patch/10883887/). > Okay good, I'll just cherry pick it for the series. Thanks, Nick
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 2c41b04708fe..30fe7b344bf7 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -428,6 +428,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, PMD_TYPE_TABLE) #define pmd_sect(pmd) ((pmd_val(pmd) & PMD_TYPE_MASK) == \ PMD_TYPE_SECT) +#define pmd_large(pmd) pmd_sect(pmd) #if defined(CONFIG_ARM64_64K_PAGES) || CONFIG_PGTABLE_LEVELS < 3 #define pud_sect(pud) (0) @@ -438,6 +439,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, #define pud_table(pud) ((pud_val(pud) & PUD_TYPE_MASK) == \ PUD_TYPE_TABLE) #endif +#define pud_large(pud) pud_sect(pud) extern pgd_t init_pg_dir[PTRS_PER_PGD]; extern pgd_t init_pg_end[];
Applying huge vmap to vmalloc requires vmalloc_to_page to walk huge pages. Define pud_large and pmd_large to support this. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/arm64/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+)