Messages in this thread Patch in this message | | | Date | Mon, 27 Jul 2020 12:46:20 -0000 | From | "tip-bot2 for Joerg Roedel" <> | Subject | [tip: x86/mm] x86/mm/64: Do not sync vmalloc/ioremap mappings |
| |
The following commit has been merged into the x86/mm branch of tip:
Commit-ID: 8bb9bf242d1fee925636353807c511d54fde8986 Gitweb: https://git.kernel.org/tip/8bb9bf242d1fee925636353807c511d54fde8986 Author: Joerg Roedel <jroedel@suse.de> AuthorDate: Tue, 21 Jul 2020 11:59:52 +02:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Mon, 27 Jul 2020 12:32:29 +02:00
x86/mm/64: Do not sync vmalloc/ioremap mappings
Remove the code to sync the vmalloc and ioremap ranges for x86-64. The page-table pages are all pre-allocated now so that synchronization is no longer necessary.
Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Link: https://lore.kernel.org/r/20200721095953.6218-3-joro@8bytes.org --- arch/x86/include/asm/pgtable_64_types.h | 2 -- arch/x86/mm/init_64.c | 5 ----- 2 files changed, 7 deletions(-)
diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h index 8f63efb..52e5f5f 100644 --- a/arch/x86/include/asm/pgtable_64_types.h +++ b/arch/x86/include/asm/pgtable_64_types.h @@ -159,6 +159,4 @@ extern unsigned int ptrs_per_p4d; #define PGD_KERNEL_START ((PAGE_SIZE / 2) / sizeof(pgd_t)) -#define ARCH_PAGE_TABLE_SYNC_MASK (pgtable_l5_enabled() ? PGTBL_PGD_MODIFIED : PGTBL_P4D_MODIFIED) - #endif /* _ASM_X86_PGTABLE_64_DEFS_H */ diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index e76bdb0..e0cd2df 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -217,11 +217,6 @@ void sync_global_pgds(unsigned long start, unsigned long end) sync_global_pgds_l4(start, end); } -void arch_sync_kernel_mappings(unsigned long start, unsigned long end) -{ - sync_global_pgds(start, end); -} - /* * NOTE: This function is marked __ref because it calls __init function * (alloc_bootmem_pages). It's safe to do it ONLY when after_bootmem == 0.
| |