From: Yeoreum Yun Date: Wed, 18 Jun 2025 09:29:54 +0000 (+0100) Subject: KVM: arm64: Expose MTE_STORE_ONLY feature to guest X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7502bdb43aa2a978d8f7ed0d1e2272cca1702317;p=thirdparty%2Flinux.git KVM: arm64: Expose MTE_STORE_ONLY feature to guest expose MTE_STORE_ONLY feature to guest. Signed-off-by: Yeoreum Yun Acked-by: Marc Zyngier Link: https://lore.kernel.org/r/20250618092957.2069907-6-yeoreum.yun@arm.com Signed-off-by: Catalin Marinas --- diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 45457963e8b6e..adabbb35d33c2 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -1618,7 +1618,9 @@ static u64 __kvm_read_sanitised_id_reg(const struct kvm_vcpu *vcpu, break; case SYS_ID_AA64PFR2_EL1: val &= ID_AA64PFR2_EL1_FPMR | - (kvm_has_mte(vcpu->kvm) ? ID_AA64PFR2_EL1_MTEFAR : 0); + (kvm_has_mte(vcpu->kvm) ? + ID_AA64PFR2_EL1_MTEFAR | ID_AA64PFR2_EL1_MTESTOREONLY : + 0); break; case SYS_ID_AA64ISAR1_EL1: if (!vcpu_has_ptrauth(vcpu)) @@ -2878,7 +2880,8 @@ static const struct sys_reg_desc sys_reg_descs[] = { ID_AA64PFR1_EL1_MTE)), ID_WRITABLE(ID_AA64PFR2_EL1, ID_AA64PFR2_EL1_FPMR | - ID_AA64PFR2_EL1_MTEFAR), + ID_AA64PFR2_EL1_MTEFAR | + ID_AA64PFR2_EL1_MTESTOREONLY), ID_UNALLOCATED(4,3), ID_WRITABLE(ID_AA64ZFR0_EL1, ~ID_AA64ZFR0_EL1_RES0), ID_HIDDEN(ID_AA64SMFR0_EL1),