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| author |   Punit Agrawal <punit.agrawal@arm.com> | 2018-12-11 17:10:41 +0000 |
|---|---|---|
| committer |   Marc Zyngier <marc.zyngier@arm.com> | 2018-12-18 15:14:49 +0000 |
| commit | b8e0ba7c8bea994011aff3b4c35256b180fab874 (patch) | |
| tree | f121e1e3e828dbea5616361533fd7c88d6fc65d7 /arch/arm64/include/asm/pgtable-hwdef.h | |
| parent | KVM: arm64: Update age handlers to support PUD hugepages (diff) | |
| download | linux-dev-b8e0ba7c8bea994011aff3b4c35256b180fab874.tar.xz linux-dev-b8e0ba7c8bea994011aff3b4c35256b180fab874.zip | |
KVM: arm64: Add support for creating PUD hugepages at stage 2
KVM only supports PMD hugepages at stage 2. Now that the various page
handling routines are updated, extend the stage 2 fault handling to
map in PUD hugepages.
Addition of PUD hugepage support enables additional page sizes (e.g.,
1G with 4K granule) which can be useful on cores that support mapping
larger block sizes in the TLB entries.
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
[ Replace BUG() => WARN_ON(1) for arm32 PUD helpers ]
Signed-off-by: Suzuki Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/pgtable-hwdef.h')
| -rw-r--r-- | arch/arm64/include/asm/pgtable-hwdef.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h index 336e24cddc87..6f1c187f1c86 100644 --- a/arch/arm64/include/asm/pgtable-hwdef.h +++ b/arch/arm64/include/asm/pgtable-hwdef.h @@ -193,6 +193,8 @@ #define PMD_S2_RDWR (_AT(pmdval_t, 3) << 6) /* HAP[2:1] */ #define PMD_S2_XN (_AT(pmdval_t, 2) << 53) /* XN[1:0] */ +#define PUD_S2_RDONLY (_AT(pudval_t, 1) << 6) /* HAP[2:1] */ +#define PUD_S2_RDWR (_AT(pudval_t, 3) << 6) /* HAP[2:1] */ #define PUD_S2_XN (_AT(pudval_t, 2) << 53) /* XN[1:0] */ /* |