From: Fuad Tabba <tabba@xxxxxxxxxx> Debug and trace are not currently supported for protected guests, so trap accesses to the related registers and emulate them as RAZ/WI. Signed-off-by: Fuad Tabba <tabba@xxxxxxxxxx> --- arch/arm64/kvm/hyp/nvhe/pkvm.c | 2 +- arch/arm64/kvm/hyp/nvhe/sys_regs.c | 11 +++++++++++ 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/hyp/nvhe/pkvm.c b/arch/arm64/kvm/hyp/nvhe/pkvm.c index c0403416ce1d..cd0712e13ab0 100644 --- a/arch/arm64/kvm/hyp/nvhe/pkvm.c +++ b/arch/arm64/kvm/hyp/nvhe/pkvm.c @@ -108,7 +108,7 @@ static void pvm_init_traps_aa64dfr0(struct kvm_vcpu *vcpu) /* Trap Debug */ if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_DEBUGVER), feature_ids)) - mdcr_set |= MDCR_EL2_TDRA | MDCR_EL2_TDA | MDCR_EL2_TDE; + mdcr_set |= MDCR_EL2_TDRA | MDCR_EL2_TDA; /* Trap OS Double Lock */ if (!FIELD_GET(ARM64_FEATURE_MASK(ID_AA64DFR0_DOUBLELOCK), feature_ids)) diff --git a/arch/arm64/kvm/hyp/nvhe/sys_regs.c b/arch/arm64/kvm/hyp/nvhe/sys_regs.c index ddea42d7baf9..e732826f9624 100644 --- a/arch/arm64/kvm/hyp/nvhe/sys_regs.c +++ b/arch/arm64/kvm/hyp/nvhe/sys_regs.c @@ -356,6 +356,17 @@ static const struct sys_reg_desc pvm_sys_reg_descs[] = { /* Cache maintenance by set/way operations are restricted. */ /* Debug and Trace Registers are restricted. */ + RAZ_WI(SYS_DBGBVRn_EL1(0)), + RAZ_WI(SYS_DBGBCRn_EL1(0)), + RAZ_WI(SYS_DBGWVRn_EL1(0)), + RAZ_WI(SYS_DBGWCRn_EL1(0)), + RAZ_WI(SYS_MDSCR_EL1), + RAZ_WI(SYS_OSLAR_EL1), + RAZ_WI(SYS_OSLSR_EL1), + RAZ_WI(SYS_OSDLR_EL1), + + /* Group 1 ID registers */ + RAZ_WI(SYS_REVIDR_EL1), /* AArch64 mappings of the AArch32 ID registers */ /* CRm=1 */ -- 2.36.1.124.g0e6072fb45-goog