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| author | Christoffer Dall <christoffer.dall@linaro.org> | 2012-11-01 20:14:45 +0400 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2013-10-18 04:06:20 +0400 |
| commit | ad361f093c1e31d0b43946210a32ab4ff5c49850 (patch) | |
| tree | 2bfef51798c8e6a916c9a961dd293fd919b0258a /arch/arm/include/asm/pgtable-3level.h | |
| parent | 86ed81aa2e1ce05a4e7f0819f0dfc34e8d8fb910 (diff) | |
| download | linux-ad361f093c1e31d0b43946210a32ab4ff5c49850.tar.xz | |
KVM: ARM: Support hugetlbfs backed huge pages
Support huge pages in KVM/ARM and KVM/ARM64. The pud_huge checking on
the unmap path may feel a bit silly as the pud_huge check is always
defined to false, but the compiler should be smart about this.
Note: This deals only with VMAs marked as huge which are allocated by
users through hugetlbfs only. Transparent huge pages can only be
detected by looking at the underlying pages (or the page tables
themselves) and this patch so far simply maps these on a page-by-page
level in the Stage-2 page tables.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm/include/asm/pgtable-3level.h')
| -rw-r--r-- | arch/arm/include/asm/pgtable-3level.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h index 5689c18c85f5..a331d2527342 100644 --- a/arch/arm/include/asm/pgtable-3level.h +++ b/arch/arm/include/asm/pgtable-3level.h @@ -126,6 +126,8 @@ #define L_PTE_S2_RDONLY (_AT(pteval_t, 1) << 6) /* HAP[1] */ #define L_PTE_S2_RDWR (_AT(pteval_t, 3) << 6) /* HAP[2:1] */ +#define L_PMD_S2_RDWR (_AT(pmdval_t, 3) << 6) /* HAP[2:1] */ + /* * Hyp-mode PL2 PTE definitions for LPAE. */ |