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| author | Joel Stanley <joel@jms.id.au> | 2020-08-31 03:46:52 +0300 |
|---|---|---|
| committer | Joel Stanley <joel@jms.id.au> | 2020-08-31 03:46:57 +0300 |
| commit | 0dd0c8c492fa70707ca4f0d36dcb2e3c64105b16 (patch) | |
| tree | a420abd8f26264544246602c60d161a7cc4de390 /arch/ia64/include/asm/pgtable.h | |
| parent | 31d8605658d37d9197a989838508481d5dc1d8bc (diff) | |
| parent | 9ece50d8a470ca7235ffd6ac0f9c5f0f201fe2c8 (diff) | |
| download | linux-dev-5.8.tar.xz | |
Merge tag 'v5.8.5' into dev-5.8dev-5.8
This is the 5.8.5 stable release
Signed-off-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'arch/ia64/include/asm/pgtable.h')
| -rw-r--r-- | arch/ia64/include/asm/pgtable.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h index 10850897a91c..779b6972aa84 100644 --- a/arch/ia64/include/asm/pgtable.h +++ b/arch/ia64/include/asm/pgtable.h @@ -366,6 +366,15 @@ pgd_index (unsigned long address) } #define pgd_index pgd_index +/* + * In the kernel's mapped region we know everything is in region number 5, so + * as an optimisation its PGD already points to the area for that region. + * However, this also means that we cannot use pgd_index() and we must + * never add the region here. + */ +#define pgd_offset_k(addr) \ + (init_mm.pgd + (((addr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))) + /* Look up a pgd entry in the gate area. On IA-64, the gate-area resides in the kernel-mapped segment, hence we use pgd_offset_k() here. */ |