diff options
| author | Marc Zyngier <maz@kernel.org> | 2024-06-25 14:00:38 +0100 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2024-06-27 00:04:25 +0000 |
| commit | a3ee9ce88ba3adc0a9bcb77dd40eca6aff3cef28 (patch) | |
| tree | 857800a01271d6e6a99d3fdef62196a0fd15c310 /arch/arm64/include | |
| parent | 9b58e665d6b25ff687380d14009d7cffe7f70df7 (diff) | |
KVM: arm64: Get rid of HCRX_GUEST_FLAGS
HCRX_GUEST_FLAGS gives random KVM hackers the impression that
they can stuff bits in this macro and unconditionally enable
features in the guest.
In general, this is wrong (we have been there with FEAT_MOPS,
and again with FEAT_TCRX).
Document that HCRX_EL2.SMPME is an exception rather than the rule,
and get rid of HCRX_GUEST_FLAGS.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Link: https://lore.kernel.org/r/20240625130042.259175-3-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/kvm_arm.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h index e6682a3ace5a..d81cc746e0eb 100644 --- a/arch/arm64/include/asm/kvm_arm.h +++ b/arch/arm64/include/asm/kvm_arm.h @@ -102,7 +102,6 @@ #define HCR_HOST_NVHE_PROTECTED_FLAGS (HCR_HOST_NVHE_FLAGS | HCR_TSC) #define HCR_HOST_VHE_FLAGS (HCR_RW | HCR_TGE | HCR_E2H) -#define HCRX_GUEST_FLAGS (HCRX_EL2_SMPME) #define HCRX_HOST_FLAGS (HCRX_EL2_MSCEn | HCRX_EL2_TCR2En | HCRX_EL2_EnFPM) /* TCR_EL2 Registers bits */ |