diff options
| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2018-09-26 17:32:43 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-10-01 13:50:29 +0100 |
| commit | 7665f3a8491b0ed3c6f65c0bc3a5424ea8f87731 (patch) | |
| tree | 2521cc98acc3bd7c5a307d6814bcabf7433fc0e7 /arch/arm64/kvm/hyp/Makefile | |
| parent | 5b6c6742b5350a6fb5c631fb99a6bc046a62739c (diff) | |
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/kvm/hyp/Makefile')
| -rw-r--r-- | arch/arm64/kvm/hyp/Makefile | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile index 2fabc2dc1966..82d1904328ad 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -19,7 +19,6 @@ obj-$(CONFIG_KVM_ARM_HOST) += switch.o obj-$(CONFIG_KVM_ARM_HOST) += fpsimd.o obj-$(CONFIG_KVM_ARM_HOST) += tlb.o obj-$(CONFIG_KVM_ARM_HOST) += hyp-entry.o -obj-$(CONFIG_KVM_ARM_HOST) += s2-setup.o # KVM code is run at a different exception code with a different map, so # compiler instrumentation that inserts callbacks or checks into the code may |