diff options
| author | Oliver Upton <oupton@google.com> | 2022-05-03 06:02:02 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-05-03 11:14:34 +0100 |
| commit | 9369bc5c5e35985f38d04bd98c6d28a032e84b17 (patch) | |
| tree | 464983c7edc9a6f52eef313cc6f8dcd313eb895d /arch/arm64/include/asm/kvm_host.h | |
| parent | e65197666773f39e4378161925e5a1c7771cff29 (diff) | |
KVM: arm64: Plumb cp10 ID traps through the AArch64 sysreg handler
In order to enable HCR_EL2.TID3 for AArch32 guests KVM needs to handle
traps where ESR_EL2.EC=0x8, which corresponds to an attempted VMRS
access from an ID group register. Specifically, the MVFR{0-2} registers
are accessed this way from AArch32. Conveniently, these registers are
architecturally mapped to MVFR{0-2}_EL1 in AArch64. Furthermore, KVM
already handles reads to these aliases in AArch64.
Plumb VMRS read traps through to the general AArch64 system register
handler.
Signed-off-by: Oliver Upton <oupton@google.com>
Reviewed-by: Reiji Watanabe <reijiw@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220503060205.2823727-5-oupton@google.com
Diffstat (limited to 'arch/arm64/include/asm/kvm_host.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 94a27a7520f4..05081b9b7369 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -683,6 +683,7 @@ int kvm_handle_cp14_64(struct kvm_vcpu *vcpu); int kvm_handle_cp15_32(struct kvm_vcpu *vcpu); int kvm_handle_cp15_64(struct kvm_vcpu *vcpu); int kvm_handle_sys_reg(struct kvm_vcpu *vcpu); +int kvm_handle_cp10_id(struct kvm_vcpu *vcpu); void kvm_reset_sys_regs(struct kvm_vcpu *vcpu); |