diff options
| author | Marc Zyngier <maz@kernel.org> | 2026-01-08 17:32:30 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2026-01-15 11:58:57 +0000 |
| commit | 70a5ce4efc0e1194718aad6f26332c99e6a119db (patch) | |
| tree | eead1e610767c9216115559016d18852c5c778ab /arch | |
| parent | f07ef1bef67ca08799df262cc901971ac274783d (diff) | |
KVM: arm64: Force trap of GMID_EL1 when the guest doesn't have MTE
If our host has MTE, but the guest doesn't, make sure we set HCR_EL2.TID5
to force GMID_EL1 being trapped. Such trap will be handled by the
FEAT_IDST handling.
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Reviewed-by: Yuan Yao <yaoyuan@linux.alibaba.com>
Link: https://patch.msgid.link/20260108173233.2911955-7-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/kvm/sys_regs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index a2b14ca2a702..3de206b49484 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -5576,6 +5576,8 @@ static void vcpu_set_hcr(struct kvm_vcpu *vcpu) if (kvm_has_mte(vcpu->kvm)) vcpu->arch.hcr_el2 |= HCR_ATA; + else + vcpu->arch.hcr_el2 |= HCR_TID5; /* * In the absence of FGT, we cannot independently trap TLBI |