diff options
| author | Marc Zyngier <maz@kernel.org> | 2025-07-14 13:26:24 +0100 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2025-07-15 20:24:28 -0700 |
| commit | 1095b32665cf1085d76fc1af283dc0bd3c986169 (patch) | |
| tree | 65714b9be18de44258ca62910b479ccfc2b9a255 | |
| parent | 86731a2a651e58953fc949573895f2fa6d456841 (diff) | |
KVM: arm64: Make RVBAR_EL2 accesses UNDEF
We always expose a virtual CPU that has EL3 when NV is enabled,
irrespective of EL3 being actually implemented in HW.
Therefore, as per the architecture, RVBAR_EL2 must UNDEF, since
EL2 is not the highest implemented exception level. This is
consistent with RMR_EL2 also triggering an UNDEF.
Adjust the handling of RVBAR_EL2 accordingly.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250714122634.3334816-2-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
| -rw-r--r-- | arch/arm64/kvm/sys_regs.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 76c2f0da821f..3f226cd5b502 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -108,7 +108,6 @@ static bool get_el2_to_el1_mapping(unsigned int reg, PURE_EL2_SYSREG( HACR_EL2 ); PURE_EL2_SYSREG( VTTBR_EL2 ); PURE_EL2_SYSREG( VTCR_EL2 ); - PURE_EL2_SYSREG( RVBAR_EL2 ); PURE_EL2_SYSREG( TPIDR_EL2 ); PURE_EL2_SYSREG( HPFAR_EL2 ); PURE_EL2_SYSREG( HCRX_EL2 ); @@ -3370,7 +3369,7 @@ static const struct sys_reg_desc sys_reg_descs[] = { { SYS_DESC(SYS_MPAMVPM7_EL2), undef_access }, EL2_REG(VBAR_EL2, access_rw, reset_val, 0), - EL2_REG(RVBAR_EL2, access_rw, reset_val, 0), + { SYS_DESC(SYS_RVBAR_EL2), undef_access }, { SYS_DESC(SYS_RMR_EL2), undef_access }, EL2_REG_VNCR(ICH_AP0R0_EL2, reset_val, 0), |