| Message ID | 20230322202541.1404058-2-aaron@os.amperecomputing.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Implement Most ARMv8.3 Pointer Authentication Features | expand |
On 3/22/23 13:25, Aaron Lindsay wrote: > --- a/target/arm/hvf/hvf.c > +++ b/target/arm/hvf/hvf.c > @@ -507,6 +507,7 @@ static bool hvf_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) > { HV_SYS_REG_ID_AA64DFR1_EL1, &host_isar.id_aa64dfr1 }, > { HV_SYS_REG_ID_AA64ISAR0_EL1, &host_isar.id_aa64isar0 }, > { HV_SYS_REG_ID_AA64ISAR1_EL1, &host_isar.id_aa64isar1 }, > + { HV_SYS_REG_ID_AA64ISAR2_EL1, &host_isar.id_aa64isar2 }, Ah, I may have given you a bum steer here. In MacOSX 12.6, there is no HV_SYS_REG_ID_AA64ISAR2_EL1 enumerator. Irritatingly, it is an enum not a define we can test via the preprocessor. In addition, the form of the enum, HV_SYS_REG_ID_AA64ISAR0_EL1 = 0xc030, HV_SYS_REG_ID_AA64ISAR1_EL1 = 0xc031, HV_SYS_REG_ID_AA64MMFR0_EL1 = 0xc038, HV_SYS_REG_ID_AA64MMFR1_EL1 = 0xc039, suggests an encoding of the system register number, so we would eventually be able to use 0xc032. But I wouldn't want to try that without the interface being properly exposed. I don't know if some later version of MacOS already does so. Otherwise, Reviewed-by: Richard Henderson <richard.henderson@linaro.org> r~
diff --git a/target/arm/cpu.h b/target/arm/cpu.h index c097cae988..f0f27f259d 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -1015,6 +1015,7 @@ struct ArchCPU { uint32_t dbgdevid1; uint64_t id_aa64isar0; uint64_t id_aa64isar1; + uint64_t id_aa64isar2; uint64_t id_aa64pfr0; uint64_t id_aa64pfr1; uint64_t id_aa64mmfr0; diff --git a/target/arm/helper.c b/target/arm/helper.c index 2297626bfb..32426495c0 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -8204,11 +8204,11 @@ void register_cp_regs_for_features(ARMCPU *cpu) .access = PL1_R, .type = ARM_CP_CONST, .accessfn = access_aa64_tid3, .resetvalue = cpu->isar.id_aa64isar1 }, - { .name = "ID_AA64ISAR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64, + { .name = "ID_AA64ISAR2_EL1", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 2, .access = PL1_R, .type = ARM_CP_CONST, .accessfn = access_aa64_tid3, - .resetvalue = 0 }, + .resetvalue = cpu->isar.id_aa64isar2 }, { .name = "ID_AA64ISAR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 3, .access = PL1_R, .type = ARM_CP_CONST, diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index ad65603445..4d7366b761 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -507,6 +507,7 @@ static bool hvf_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) { HV_SYS_REG_ID_AA64DFR1_EL1, &host_isar.id_aa64dfr1 }, { HV_SYS_REG_ID_AA64ISAR0_EL1, &host_isar.id_aa64isar0 }, { HV_SYS_REG_ID_AA64ISAR1_EL1, &host_isar.id_aa64isar1 }, + { HV_SYS_REG_ID_AA64ISAR2_EL1, &host_isar.id_aa64isar2 }, { HV_SYS_REG_ID_AA64MMFR0_EL1, &host_isar.id_aa64mmfr0 }, { HV_SYS_REG_ID_AA64MMFR1_EL1, &host_isar.id_aa64mmfr1 }, { HV_SYS_REG_ID_AA64MMFR2_EL1, &host_isar.id_aa64mmfr2 }, diff --git a/target/arm/kvm64.c b/target/arm/kvm64.c index 1197253d12..4b71306f92 100644 --- a/target/arm/kvm64.c +++ b/target/arm/kvm64.c @@ -590,6 +590,8 @@ bool kvm_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) ARM64_SYS_REG(3, 0, 0, 6, 0)); err |= read_sys_reg64(fdarray[2], &ahcf->isar.id_aa64isar1, ARM64_SYS_REG(3, 0, 0, 6, 1)); + err |= read_sys_reg64(fdarray[2], &ahcf->isar.id_aa64isar2, + ARM64_SYS_REG(3, 0, 0, 6, 2)); err |= read_sys_reg64(fdarray[2], &ahcf->isar.id_aa64mmfr0, ARM64_SYS_REG(3, 0, 0, 7, 0)); err |= read_sys_reg64(fdarray[2], &ahcf->isar.id_aa64mmfr1,
Signed-off-by: Aaron Lindsay <aaron@os.amperecomputing.com> --- target/arm/cpu.h | 1 + target/arm/helper.c | 4 ++-- target/arm/hvf/hvf.c | 1 + target/arm/kvm64.c | 2 ++ 4 files changed, 6 insertions(+), 2 deletions(-)