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x86/mm/64: Do not sync vmalloc/ioremap mappings

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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 <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Reviewed-by: Mike Rapoport <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
This commit is contained in:
Joerg Roedel authored and Ingo Molnar committed 2020-07-27 12:32:29 +02:00
1 parent 6eb82f9940
commit 8bb9bf242d
2 files changed
-7
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arch/x86/include/asm/pgtable_64_types.h
-2
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@@ -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 */
arch/x86/mm/init_64.c
-5
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@@ -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.