| commit | a2465629b62a82b3145dc7ef40ec6c32432cf002 | |
| author | Christoffer Dall <christoffer.dall@linaro.org> | |
| Fri, 4 Aug 2017 11:47:18 +0000 (4 13:47 +0200) | ||
| committer | Marc Zyngier <marc.zyngier@arm.com> | |
| Mon, 19 Mar 2018 10:53:19 +0000 (19 10:53 +0000) | ||
| tree | e39e588a883ac6e565a9b8214c3e79ef3351c4be | treesnapshot (tar.gz zip) |
| parent | c16c1131fb1ccc70aac351111388bf23a97024ca | commitdiff |
KVM: arm64: Configure c15, PMU, and debug register traps on cpu load/put for VHE
We do not have to change the c15 trap setting on each switch to/from the
guest on VHE systems, because this setting only affects guest EL1/EL0
(and therefore not the VHE host).
The PMU and debug trap configuration can also be done on vcpu load/put
instead, because they don't affect how the VHE host kernel can access the
debug registers while executing KVM kernel code.
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
We do not have to change the c15 trap setting on each switch to/from the
guest on VHE systems, because this setting only affects guest EL1/EL0
(and therefore not the VHE host).
The PMU and debug trap configuration can also be done on vcpu load/put
instead, because they don't affect how the VHE host kernel can access the
debug registers while executing KVM kernel code.
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| arch/arm64/include/asm/kvm_hyp.h | diffblobblamehistory | |
| arch/arm64/kvm/hyp/switch.c | diffblobblamehistory | |
| arch/arm64/kvm/hyp/sysreg-sr.c | diffblobblamehistory |