diff options
| author | Vladimir Murzin <vladimir.murzin@arm.com> | 2015-11-16 11:28:18 +0000 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2015-12-18 10:15:12 +0000 |
| commit | 20475f784d29991b3b843c80c38a36f2ebb35ac4 (patch) | |
| tree | fce9116aeb5f04122e323a240daeb5a018feb360 /arch/arm64/include/asm/kvm_arm.h | |
| parent | 8420dcd37ef34040c8fc5a27bf66887b3b2faf80 (diff) | |
| download | lwn-20475f784d29991b3b843c80c38a36f2ebb35ac4.tar.gz lwn-20475f784d29991b3b843c80c38a36f2ebb35ac4.zip | |
arm64: KVM: Add support for 16-bit VMID
The ARMv8.1 architecture extension allows to choose between 8-bit and
16-bit of VMID, so use this capability for KVM.
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/kvm_arm.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_arm.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h index 5e6857b6bdc4..738a95f93e49 100644 --- a/arch/arm64/include/asm/kvm_arm.h +++ b/arch/arm64/include/asm/kvm_arm.h @@ -125,6 +125,7 @@ #define VTCR_EL2_SL0_LVL1 (1 << 6) #define VTCR_EL2_T0SZ_MASK 0x3f #define VTCR_EL2_T0SZ_40B 24 +#define VTCR_EL2_VS 19 /* * We configure the Stage-2 page tables to always restrict the IPA space to be @@ -169,7 +170,7 @@ #define VTTBR_BADDR_SHIFT (VTTBR_X - 1) #define VTTBR_BADDR_MASK (((UL(1) << (PHYS_MASK_SHIFT - VTTBR_X)) - 1) << VTTBR_BADDR_SHIFT) #define VTTBR_VMID_SHIFT (UL(48)) -#define VTTBR_VMID_MASK (UL(0xFF) << VTTBR_VMID_SHIFT) +#define VTTBR_VMID_MASK(size) (_AT(u64, (1 << size) - 1) << VTTBR_VMID_SHIFT) /* Hyp System Trap Register */ #define HSTR_EL2_T(x) (1 << x) |