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| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2018-09-26 19:32:43 +0300 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-10-01 15:50:29 +0300 |
| commit | 7665f3a8491b0ed3c6f65c0bc3a5424ea8f87731 (patch) | |
| tree | 2521cc98acc3bd7c5a307d6814bcabf7433fc0e7 /arch/arm64/include/asm/kvm_asm.h | |
| parent | 5b6c6742b5350a6fb5c631fb99a6bc046a62739c (diff) | |
| download | linux-7665f3a8491b0ed3c6f65c0bc3a5424ea8f87731.tar.xz | |
kvm: arm64: Configure VTCR_EL2 per VM
Add support for setting the VTCR_EL2 per VM, rather than hard
coding a value at boot time per CPU. This would allow us to tune
the stage2 page table parameters per VM in the later changes.
We compute the VTCR fields based on the system wide sanitised
feature registers, except for the hardware management of Access
Flags (VTCR_EL2.HA). It is fine to run a system with a mix of
CPUs that may or may not update the page table Access Flags.
Since the bit is RES0 on CPUs that don't support it, the bit
should be ignored on them.
Suggested-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <cdall@kernel.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/kvm_asm.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_asm.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h index 102b5a5c47b6..0b53c72e7591 100644 --- a/arch/arm64/include/asm/kvm_asm.h +++ b/arch/arm64/include/asm/kvm_asm.h @@ -72,8 +72,6 @@ extern void __vgic_v3_init_lrs(void); extern u32 __kvm_get_mdcr_el2(void); -extern u32 __init_stage2_translation(void); - /* Home-grown __this_cpu_{ptr,read} variants that always work at HYP */ #define __hyp_this_cpu_ptr(sym) \ ({ \ |