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| author |   Christophe Leroy <christophe.leroy@csgroup.eu> | 2020-05-19 05:49:08 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-05-26 22:22:21 +1000 |
| commit | a891c43b97d315ee5f9fe8e797d3d48fc351e053 (patch) | |
| tree | 6d80b1bd9f1391c3a05f0207333b0f1c433bc49e /arch/powerpc/include | |
| parent | powerpc/8xx: Drop CONFIG_8xx_COPYBACK option (diff) | |
| download | linux-dev-a891c43b97d315ee5f9fe8e797d3d48fc351e053.tar.xz linux-dev-a891c43b97d315ee5f9fe8e797d3d48fc351e053.zip | |
powerpc/8xx: Prepare handlers for _PAGE_HUGE for 512k pages.
Prepare ITLB handler to handle _PAGE_HUGE when CONFIG_HUGETLBFS
is enabled. This means that the L1 entry has to be kept in r11
until L2 entry is read, in order to insert _PAGE_HUGE into it.
Also move pgd_offset helpers before pte_update() as they
will be needed there in next patch.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/21fd1de8fba781bededa9474a5a9374aefb1f849.1589866984.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/nohash/32/pgtable.h | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h index ff78bf25f832..9a287a95acad 100644 --- a/arch/powerpc/include/asm/nohash/32/pgtable.h +++ b/arch/powerpc/include/asm/nohash/32/pgtable.h @@ -206,6 +206,12 @@ static inline void pmd_clear(pmd_t *pmdp) } +/* to find an entry in a kernel page-table-directory */ +#define pgd_offset_k(address) pgd_offset(&init_mm, address) + +/* to find an entry in a page-table-directory */ +#define pgd_index(address) ((address) >> PGDIR_SHIFT) +#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) /* * PTE updates. This function is called whenever an existing @@ -348,13 +354,6 @@ static inline int pte_young(pte_t pte) pfn_to_page((__pa(pmd_val(pmd)) >> PAGE_SHIFT)) #endif -/* to find an entry in a kernel page-table-directory */ -#define pgd_offset_k(address) pgd_offset(&init_mm, address) - -/* to find an entry in a page-table-directory */ -#define pgd_index(address) ((address) >> PGDIR_SHIFT) -#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) - /* Find an entry in the third-level page table.. */ #define pte_index(address) \ (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) |