diff options
| author |   Marc Zyngier <maz@kernel.org> | 2021-10-13 13:03:40 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-10-18 16:57:08 +0100 |
| commit | f3d5ccabab20c1be5838831f460f320a12e5e2c9 (patch) | |
| tree | 553fabc5bfc4086d4a796cc8923311bf75249567 /arch/arm64/kvm | |
| parent | KVM: arm64: pkvm: Drop AArch32-specific registers (diff) | |
| download | linux-dev-f3d5ccabab20c1be5838831f460f320a12e5e2c9.tar.xz linux-dev-f3d5ccabab20c1be5838831f460f320a12e5e2c9.zip | |
KVM: arm64: pkvm: Drop sysregs that should never be routed to the host
A bunch of system registers (most of them MM related) should never
trap to the host under any circumstance. Keep them close to our chest.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Fuad Tabba <tabba@google.com>
Tested-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20211013120346.2926621-6-maz@kernel.org
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/hyp/nvhe/sys_regs.c | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/arch/arm64/kvm/hyp/nvhe/sys_regs.c b/arch/arm64/kvm/hyp/nvhe/sys_regs.c index e2b3a9e167da..eb4ee2589316 100644 --- a/arch/arm64/kvm/hyp/nvhe/sys_regs.c +++ b/arch/arm64/kvm/hyp/nvhe/sys_regs.c @@ -371,34 +371,8 @@ static const struct sys_reg_desc pvm_sys_reg_descs[] = { AARCH64(SYS_ID_AA64MMFR1_EL1), AARCH64(SYS_ID_AA64MMFR2_EL1), - HOST_HANDLED(SYS_SCTLR_EL1), - HOST_HANDLED(SYS_ACTLR_EL1), - HOST_HANDLED(SYS_CPACR_EL1), - - HOST_HANDLED(SYS_RGSR_EL1), - HOST_HANDLED(SYS_GCR_EL1), - /* Scalable Vector Registers are restricted. */ - HOST_HANDLED(SYS_TTBR0_EL1), - HOST_HANDLED(SYS_TTBR1_EL1), - HOST_HANDLED(SYS_TCR_EL1), - - HOST_HANDLED(SYS_APIAKEYLO_EL1), - HOST_HANDLED(SYS_APIAKEYHI_EL1), - HOST_HANDLED(SYS_APIBKEYLO_EL1), - HOST_HANDLED(SYS_APIBKEYHI_EL1), - HOST_HANDLED(SYS_APDAKEYLO_EL1), - HOST_HANDLED(SYS_APDAKEYHI_EL1), - HOST_HANDLED(SYS_APDBKEYLO_EL1), - HOST_HANDLED(SYS_APDBKEYHI_EL1), - HOST_HANDLED(SYS_APGAKEYLO_EL1), - HOST_HANDLED(SYS_APGAKEYHI_EL1), - - HOST_HANDLED(SYS_AFSR0_EL1), - HOST_HANDLED(SYS_AFSR1_EL1), - HOST_HANDLED(SYS_ESR_EL1), - RAZ_WI(SYS_ERRIDR_EL1), RAZ_WI(SYS_ERRSELR_EL1), RAZ_WI(SYS_ERXFR_EL1), @@ -408,31 +382,12 @@ static const struct sys_reg_desc pvm_sys_reg_descs[] = { RAZ_WI(SYS_ERXMISC0_EL1), RAZ_WI(SYS_ERXMISC1_EL1), - HOST_HANDLED(SYS_TFSR_EL1), - HOST_HANDLED(SYS_TFSRE0_EL1), - - HOST_HANDLED(SYS_FAR_EL1), - HOST_HANDLED(SYS_PAR_EL1), - /* Performance Monitoring Registers are restricted. */ - HOST_HANDLED(SYS_MAIR_EL1), - HOST_HANDLED(SYS_AMAIR_EL1), - /* Limited Ordering Regions Registers are restricted. */ - HOST_HANDLED(SYS_VBAR_EL1), - HOST_HANDLED(SYS_DISR_EL1), - /* GIC CPU Interface registers are restricted. */ - HOST_HANDLED(SYS_CONTEXTIDR_EL1), - HOST_HANDLED(SYS_TPIDR_EL1), - - HOST_HANDLED(SYS_SCXTNUM_EL1), - - HOST_HANDLED(SYS_CNTKCTL_EL1), - HOST_HANDLED(SYS_CCSIDR_EL1), HOST_HANDLED(SYS_CLIDR_EL1), HOST_HANDLED(SYS_CSSELR_EL1), @@ -440,11 +395,6 @@ static const struct sys_reg_desc pvm_sys_reg_descs[] = { /* Performance Monitoring Registers are restricted. */ - HOST_HANDLED(SYS_TPIDR_EL0), - HOST_HANDLED(SYS_TPIDRRO_EL0), - - HOST_HANDLED(SYS_SCXTNUM_EL0), - /* Activity Monitoring Registers are restricted. */ HOST_HANDLED(SYS_CNTP_TVAL_EL0), |