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| author | Mike Rapoport <rppt@linux.ibm.com> | 2020-04-02 10:16:14 +0200 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-04-14 12:54:43 +0200 |
| commit | 3fbfb4585bfd4ff34e9d3b4edd5b3e49e8f5a541 (patch) | |
| tree | eda39214dc6a797616b6d74285b5defffb724071 /arch/mips/include/asm/pgtable-64.h | |
| parent | MIPS: TXx9: Fix Kconfig warnings (diff) | |
| download | linux-3fbfb4585bfd4ff34e9d3b4edd5b3e49e8f5a541.tar.xz linux-3fbfb4585bfd4ff34e9d3b4edd5b3e49e8f5a541.zip | |
mips: define pud_index() regardless of page table folding
Commit 31168f033e37 ("mips: drop __pXd_offset() macros that duplicate
pXd_index() ones") is correct that pud_index() & __pud_offset() are the
same when pud_index() is actually provided, however it does not take into
account the __PAGETABLE_PUD_FOLDED case. This has broken MIPS KVM
compilation because it relied on availability of pud_index().
Define pud_index() regardless of page table folded. It will evaluate to
actual index for 4-level pagetables and to 0 for folded PUD level.
Link: https://lore.kernel.org/lkml/20200331154749.5457-1-pbonzini@redhat.com
Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Tested-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/include/asm/pgtable-64.h')
| -rw-r--r-- | arch/mips/include/asm/pgtable-64.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/mips/include/asm/pgtable-64.h b/arch/mips/include/asm/pgtable-64.h index f92716cfa4f4..ee5dc0c145b9 100644 --- a/arch/mips/include/asm/pgtable-64.h +++ b/arch/mips/include/asm/pgtable-64.h @@ -172,6 +172,8 @@ extern pte_t invalid_pte_table[PTRS_PER_PTE]; +#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)) + #ifndef __PAGETABLE_PUD_FOLDED /* * For 4-level pagetables we defines these ourselves, for 3-level the @@ -210,8 +212,6 @@ static inline void p4d_clear(p4d_t *p4dp) p4d_val(*p4dp) = (unsigned long)invalid_pud_table; } -#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)) - static inline unsigned long p4d_page_vaddr(p4d_t p4d) { return p4d_val(p4d); |