From: Mark Brown <broonie@kernel.org>
To: Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
Joey Gouly <joey.gouly@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Will Deacon <will@kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Jonathan Corbet <corbet@lwn.net>, Shuah Khan <shuah@kernel.org>
Cc: Dave Martin <Dave.Martin@arm.com>, Fuad Tabba <tabba@google.com>,
Mark Rutland <mark.rutland@arm.com>,
linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org,
Peter Maydell <peter.maydell@linaro.org>,
Eric Auger <eric.auger@redhat.com>,
Mark Brown <broonie@kernel.org>
Subject: [PATCH v8 08/29] KVM: arm64: Pull ctxt_has_ helpers to start of sysreg-sr.h
Date: Tue, 02 Sep 2025 12:36:11 +0100 [thread overview]
Message-ID: <20250902-kvm-arm64-sme-v8-8-2cb2199c656c@kernel.org> (raw)
In-Reply-To: <20250902-kvm-arm64-sme-v8-0-2cb2199c656c@kernel.org>
Rather than add earlier prototypes of specific ctxt_has_ helpers let's just
pull all their definitions to the top of sysreg-sr.h so they're all
available to all the individual save/restore functions.
Signed-off-by: Mark Brown <broonie@kernel.org>
---
arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 84 +++++++++++++++---------------
1 file changed, 41 insertions(+), 43 deletions(-)
diff --git a/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h b/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h
index a17cbe7582de..5624fd705ae3 100644
--- a/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h
+++ b/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h
@@ -16,8 +16,6 @@
#include <asm/kvm_hyp.h>
#include <asm/kvm_mmu.h>
-static inline bool ctxt_has_s1poe(struct kvm_cpu_context *ctxt);
-
static inline struct kvm_vcpu *ctxt_to_vcpu(struct kvm_cpu_context *ctxt)
{
struct kvm_vcpu *vcpu = ctxt->__hyp_running_vcpu;
@@ -28,47 +26,6 @@ static inline struct kvm_vcpu *ctxt_to_vcpu(struct kvm_cpu_context *ctxt)
return vcpu;
}
-static inline bool ctxt_is_guest(struct kvm_cpu_context *ctxt)
-{
- return host_data_ptr(host_ctxt) != ctxt;
-}
-
-static inline u64 *ctxt_mdscr_el1(struct kvm_cpu_context *ctxt)
-{
- struct kvm_vcpu *vcpu = ctxt_to_vcpu(ctxt);
-
- if (ctxt_is_guest(ctxt) && kvm_host_owns_debug_regs(vcpu))
- return &vcpu->arch.external_mdscr_el1;
-
- return &ctxt_sys_reg(ctxt, MDSCR_EL1);
-}
-
-static inline u64 ctxt_midr_el1(struct kvm_cpu_context *ctxt)
-{
- struct kvm *kvm = kern_hyp_va(ctxt_to_vcpu(ctxt)->kvm);
-
- if (!(ctxt_is_guest(ctxt) &&
- test_bit(KVM_ARCH_FLAG_WRITABLE_IMP_ID_REGS, &kvm->arch.flags)))
- return read_cpuid_id();
-
- return kvm_read_vm_id_reg(kvm, SYS_MIDR_EL1);
-}
-
-static inline void __sysreg_save_common_state(struct kvm_cpu_context *ctxt)
-{
- *ctxt_mdscr_el1(ctxt) = read_sysreg(mdscr_el1);
-
- // POR_EL0 can affect uaccess, so must be saved/restored early.
- if (ctxt_has_s1poe(ctxt))
- ctxt_sys_reg(ctxt, POR_EL0) = read_sysreg_s(SYS_POR_EL0);
-}
-
-static inline void __sysreg_save_user_state(struct kvm_cpu_context *ctxt)
-{
- ctxt_sys_reg(ctxt, TPIDR_EL0) = read_sysreg(tpidr_el0);
- ctxt_sys_reg(ctxt, TPIDRRO_EL0) = read_sysreg(tpidrro_el0);
-}
-
static inline bool ctxt_has_mte(struct kvm_cpu_context *ctxt)
{
struct kvm_vcpu *vcpu = ctxt_to_vcpu(ctxt);
@@ -131,6 +88,47 @@ static inline bool ctxt_has_sctlr2(struct kvm_cpu_context *ctxt)
return kvm_has_sctlr2(kern_hyp_va(vcpu->kvm));
}
+static inline bool ctxt_is_guest(struct kvm_cpu_context *ctxt)
+{
+ return host_data_ptr(host_ctxt) != ctxt;
+}
+
+static inline u64 *ctxt_mdscr_el1(struct kvm_cpu_context *ctxt)
+{
+ struct kvm_vcpu *vcpu = ctxt_to_vcpu(ctxt);
+
+ if (ctxt_is_guest(ctxt) && kvm_host_owns_debug_regs(vcpu))
+ return &vcpu->arch.external_mdscr_el1;
+
+ return &ctxt_sys_reg(ctxt, MDSCR_EL1);
+}
+
+static inline u64 ctxt_midr_el1(struct kvm_cpu_context *ctxt)
+{
+ struct kvm *kvm = kern_hyp_va(ctxt_to_vcpu(ctxt)->kvm);
+
+ if (!(ctxt_is_guest(ctxt) &&
+ test_bit(KVM_ARCH_FLAG_WRITABLE_IMP_ID_REGS, &kvm->arch.flags)))
+ return read_cpuid_id();
+
+ return kvm_read_vm_id_reg(kvm, SYS_MIDR_EL1);
+}
+
+static inline void __sysreg_save_common_state(struct kvm_cpu_context *ctxt)
+{
+ *ctxt_mdscr_el1(ctxt) = read_sysreg(mdscr_el1);
+
+ // POR_EL0 can affect uaccess, so must be saved/restored early.
+ if (ctxt_has_s1poe(ctxt))
+ ctxt_sys_reg(ctxt, POR_EL0) = read_sysreg_s(SYS_POR_EL0);
+}
+
+static inline void __sysreg_save_user_state(struct kvm_cpu_context *ctxt)
+{
+ ctxt_sys_reg(ctxt, TPIDR_EL0) = read_sysreg(tpidr_el0);
+ ctxt_sys_reg(ctxt, TPIDRRO_EL0) = read_sysreg(tpidrro_el0);
+}
+
static inline void __sysreg_save_el1_state(struct kvm_cpu_context *ctxt)
{
ctxt_sys_reg(ctxt, SCTLR_EL1) = read_sysreg_el1(SYS_SCTLR);
--
2.39.5
next prev parent reply other threads:[~2025-09-02 13:33 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-02 11:36 [PATCH v8 00/29] KVM: arm64: Implement support for SME Mark Brown
2025-09-02 11:36 ` [PATCH v8 01/29] arm64/sysreg: Update SMIDR_EL1 to DDI0601 2025-06 Mark Brown
2025-09-02 11:36 ` [PATCH v8 02/29] arm64/fpsimd: Update FA64 and ZT0 enables when loading SME state Mark Brown
2025-09-02 11:36 ` [PATCH v8 03/29] arm64/fpsimd: Decide to save ZT0 and streaming mode FFR at bind time Mark Brown
2025-09-02 11:36 ` [PATCH v8 04/29] arm64/fpsimd: Check enable bit for FA64 when saving EFI state Mark Brown
2025-09-02 11:36 ` [PATCH v8 05/29] arm64/fpsimd: Determine maximum virtualisable SME vector length Mark Brown
2025-09-02 11:36 ` [PATCH v8 06/29] KVM: arm64: Introduce non-UNDEF FGT control Mark Brown
2025-09-02 11:36 ` [PATCH v8 07/29] KVM: arm64: Pay attention to FFR parameter in SVE save and load Mark Brown
2025-09-02 11:36 ` Mark Brown [this message]
2025-09-02 11:36 ` [PATCH v8 09/29] KVM: arm64: Move SVE state access macros after feature test macros Mark Brown
2025-09-02 11:36 ` [PATCH v8 10/29] KVM: arm64: Rename SVE finalization constants to be more general Mark Brown
2025-09-02 11:36 ` [PATCH v8 11/29] KVM: arm64: Document the KVM ABI for SME Mark Brown
2025-09-02 11:36 ` [PATCH v8 12/29] KVM: arm64: Define internal features " Mark Brown
2025-09-02 11:36 ` [PATCH v8 13/29] KVM: arm64: Rename sve_state_reg_region Mark Brown
2025-09-02 11:36 ` [PATCH v8 14/29] KVM: arm64: Store vector lengths in an array Mark Brown
2025-09-02 11:36 ` [PATCH v8 15/29] KVM: arm64: Implement SME vector length configuration Mark Brown
2025-09-02 11:36 ` [PATCH v8 16/29] KVM: arm64: Support SME control registers Mark Brown
2025-09-02 11:36 ` [PATCH v8 17/29] KVM: arm64: Support TPIDR2_EL0 Mark Brown
2025-09-02 11:36 ` [PATCH v8 18/29] KVM: arm64: Support SME identification registers for guests Mark Brown
2025-09-02 11:36 ` [PATCH v8 19/29] KVM: arm64: Support SME priority registers Mark Brown
2025-09-02 11:36 ` [PATCH v8 20/29] KVM: arm64: Provide assembly for SME register access Mark Brown
2025-09-02 11:36 ` [PATCH v8 21/29] KVM: arm64: Support userspace access to streaming mode Z and P registers Mark Brown
2025-09-02 11:36 ` [PATCH v8 22/29] KVM: arm64: Flush register state on writes to SVCR.SM and SVCR.ZA Mark Brown
2025-09-02 11:36 ` [PATCH v8 23/29] KVM: arm64: Expose SME specific state to userspace Mark Brown
2025-09-02 11:36 ` [PATCH v8 24/29] KVM: arm64: Context switch SME state for guests Mark Brown
2025-09-02 11:36 ` [PATCH v8 25/29] KVM: arm64: Handle SME exceptions Mark Brown
2025-09-02 11:36 ` [PATCH v8 26/29] KVM: arm64: Expose SME to nested guests Mark Brown
2025-09-02 11:36 ` [PATCH v8 27/29] KVM: arm64: Provide interface for configuring and enabling SME for guests Mark Brown
2025-09-02 11:36 ` [PATCH v8 28/29] KVM: arm64: selftests: Add SME system registers to get-reg-list Mark Brown
2025-09-02 11:36 ` [PATCH v8 29/29] KVM: arm64: selftests: Add SME to set_id_regs test Mark Brown
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