This patch cleans up the PCD bit manipulation in EFI virtual mapping,
and uses _PAGE_CACHE_<type> macros, instead. This keeps the efi code
independent from the PAT slot assignment.
Signed-off-by: Toshi Kani <toshi.kani@xxxxxx>
---
arch/x86/platform/efi/efi_64.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c
index 290d397..55c6e77 100644
--- a/arch/x86/platform/efi/efi_64.c
+++ b/arch/x86/platform/efi/efi_64.c
@@ -202,10 +202,10 @@ void efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages)
static void __init __map_region(efi_memory_desc_t *md, u64 va)
{
pgd_t *pgd = (pgd_t *)__va(real_mode_header->trampoline_pgd);
- unsigned long pf = 0;
+ unsigned long pf = _PAGE_CACHE_WB;
if (!(md->attribute & EFI_MEMORY_WB))
- pf |= _PAGE_PCD;
+ pf = _PAGE_CACHE_UC_MINUS;
if (kernel_map_pages_in_pgd(pgd, md->phys_addr, va, md->num_pages, pf))
pr_warn("Error mapping PA 0x%llx -> VA 0x%llx!\n",
--
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