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authorPaolo Bonzini <pbonzini@redhat.com>2025-02-14 18:32:47 -0500
committerPaolo Bonzini <pbonzini@redhat.com>2025-02-14 18:32:47 -0500
commit3bb7dcebd022fea8a696185592d21bceed7b426c (patch)
tree589e669d7aa8de1277d9c6d5305b832d74ff2e45 /arch/arm64/include/asm/kvm_emulate.h
parent43fb96ae78551d7bfa4ecca956b258f085d67c40 (diff)
parentb3aa9283c0c505b5cfd25f7d6cfd720de2adc807 (diff)
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Merge tag 'kvmarm-fixes-6.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 6.14, take #2 - Large set of fixes for vector handling, specially in the interactions between host and guest state. This fixes a number of bugs affecting actual deployments, and greatly simplifies the FP/SIMD/SVE handling. Thanks to Mark Rutland for dealing with this thankless task. - Fix an ugly race between vcpu and vgic creation/init, resulting in unexpected behaviours. - Fix use of kernel VAs at EL2 when emulating timers with nVHE. - Small set of pKVM improvements and cleanups.
Diffstat (limited to 'arch/arm64/include/asm/kvm_emulate.h')
-rw-r--r--arch/arm64/include/asm/kvm_emulate.h42
1 files changed, 0 insertions, 42 deletions
diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
index 47f2cf408eed..78ec1ef2cfe8 100644
--- a/arch/arm64/include/asm/kvm_emulate.h
+++ b/arch/arm64/include/asm/kvm_emulate.h
@@ -605,48 +605,6 @@ static __always_inline void kvm_incr_pc(struct kvm_vcpu *vcpu)
__cpacr_to_cptr_set(clr, set));\
} while (0)
-static __always_inline void kvm_write_cptr_el2(u64 val)
-{
- if (has_vhe() || has_hvhe())
- write_sysreg(val, cpacr_el1);
- else
- write_sysreg(val, cptr_el2);
-}
-
-/* Resets the value of cptr_el2 when returning to the host. */
-static __always_inline void __kvm_reset_cptr_el2(struct kvm *kvm)
-{
- u64 val;
-
- if (has_vhe()) {
- val = (CPACR_EL1_FPEN | CPACR_EL1_ZEN_EL1EN);
- if (cpus_have_final_cap(ARM64_SME))
- val |= CPACR_EL1_SMEN_EL1EN;
- } else if (has_hvhe()) {
- val = CPACR_EL1_FPEN;
-
- if (!kvm_has_sve(kvm) || !guest_owns_fp_regs())
- val |= CPACR_EL1_ZEN;
- if (cpus_have_final_cap(ARM64_SME))
- val |= CPACR_EL1_SMEN;
- } else {
- val = CPTR_NVHE_EL2_RES1;
-
- if (kvm_has_sve(kvm) && guest_owns_fp_regs())
- val |= CPTR_EL2_TZ;
- if (!cpus_have_final_cap(ARM64_SME))
- val |= CPTR_EL2_TSM;
- }
-
- kvm_write_cptr_el2(val);
-}
-
-#ifdef __KVM_NVHE_HYPERVISOR__
-#define kvm_reset_cptr_el2(v) __kvm_reset_cptr_el2(kern_hyp_va((v)->kvm))
-#else
-#define kvm_reset_cptr_el2(v) __kvm_reset_cptr_el2((v)->kvm)
-#endif
-
/*
* Returns a 'sanitised' view of CPTR_EL2, translating from nVHE to the VHE
* format if E2H isn't set.