diff options
| author | Catalin Marinas <catalin.marinas@arm.com> | 2022-09-30 11:18:22 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2022-09-30 11:18:22 +0300 |
| commit | c704cf27a1adc5fa40fb8e40b5617bdca889a419 (patch) | |
| tree | 47d4dc5c6a938ca90e370dc45767ce3971d49616 /arch/arm64/kvm | |
| parent | c397623262fada5df2f92a861000957c36f330c1 (diff) | |
| parent | ba00c2a04fa5431d204a4183062b30372c062aa7 (diff) | |
| download | linux-c704cf27a1adc5fa40fb8e40b5617bdca889a419.tar.xz | |
Merge branch 'for-next/alternatives' into for-next/core
* for-next/alternatives:
: Alternatives (code patching) improvements
arm64: fix the build with binutils 2.27
arm64: avoid BUILD_BUG_ON() in alternative-macros
arm64: alternatives: add shared NOP callback
arm64: alternatives: add alternative_has_feature_*()
arm64: alternatives: have callbacks take a cap
arm64: alternatives: make alt_region const
arm64: alternatives: hoist print out of __apply_alternatives()
arm64: alternatives: proton-pack: prepare for cap changes
arm64: alternatives: kvm: prepare for cap changes
arm64: cpufeature: make cpus_have_cap() noinstr-safe
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/hyp/hyp-entry.S | 4 | ||||
| -rw-r--r-- | arch/arm64/kvm/va_layout.c | 5 |
2 files changed, 5 insertions, 4 deletions
diff --git a/arch/arm64/kvm/hyp/hyp-entry.S b/arch/arm64/kvm/hyp/hyp-entry.S index 7839d075729b..8f3f93fa119e 100644 --- a/arch/arm64/kvm/hyp/hyp-entry.S +++ b/arch/arm64/kvm/hyp/hyp-entry.S @@ -196,7 +196,7 @@ SYM_CODE_END(__kvm_hyp_vector) sub sp, sp, #(8 * 4) stp x2, x3, [sp, #(8 * 0)] stp x0, x1, [sp, #(8 * 2)] - alternative_cb spectre_bhb_patch_wa3 + alternative_cb ARM64_ALWAYS_SYSTEM, spectre_bhb_patch_wa3 /* Patched to mov WA3 when supported */ mov w0, #ARM_SMCCC_ARCH_WORKAROUND_1 alternative_cb_end @@ -216,7 +216,7 @@ SYM_CODE_END(__kvm_hyp_vector) mitigate_spectre_bhb_clear_insn .endif .if \indirect != 0 - alternative_cb kvm_patch_vector_branch + alternative_cb ARM64_ALWAYS_SYSTEM, kvm_patch_vector_branch /* * For ARM64_SPECTRE_V3A configurations, these NOPs get replaced with: * diff --git a/arch/arm64/kvm/va_layout.c b/arch/arm64/kvm/va_layout.c index acdb7b3cc97d..91b22a014610 100644 --- a/arch/arm64/kvm/va_layout.c +++ b/arch/arm64/kvm/va_layout.c @@ -169,7 +169,7 @@ void __init kvm_update_va_mask(struct alt_instr *alt, * dictates it and we don't have any spare bits in the * address), NOP everything after masking the kernel VA. */ - if (has_vhe() || (!tag_val && i > 0)) { + if (cpus_have_cap(ARM64_HAS_VIRT_HOST_EXTN) || (!tag_val && i > 0)) { updptr[i] = cpu_to_le32(aarch64_insn_gen_nop()); continue; } @@ -193,7 +193,8 @@ void kvm_patch_vector_branch(struct alt_instr *alt, BUG_ON(nr_inst != 4); - if (!cpus_have_const_cap(ARM64_SPECTRE_V3A) || WARN_ON_ONCE(has_vhe())) + if (!cpus_have_cap(ARM64_SPECTRE_V3A) || + WARN_ON_ONCE(cpus_have_cap(ARM64_HAS_VIRT_HOST_EXTN))) return; /* |