From: Mark Brown <broonie@kernel.org>
To: Marc Zyngier <maz@kernel.org>, 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>,
Oliver Upton <oupton@kernel.org>
Cc: Dave Martin <Dave.Martin@arm.com>, Fuad Tabba <tabba@google.com>,
Mark Rutland <mark.rutland@arm.com>,
Ben Horgan <ben.horgan@arm.com>,
Jean-Philippe Brucker <jpb@kernel.org>,
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 v13 09/32] KVM: arm64: Pull ctxt_has_ helpers to start of sysreg-sr.h
Date: Mon, 20 Jul 2026 00:07:36 +0100 [thread overview]
Message-ID: <20260720-kvm-arm64-sme-v13-9-d9abd3ffa245@kernel.org> (raw)
In-Reply-To: <20260720-kvm-arm64-sme-v13-0-d9abd3ffa245@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.
Reviewed-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Jean-Philippe Brucker <jpb@kernel.org>
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);
--
2.47.3
next prev parent reply other threads:[~2026-07-19 23:10 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-19 23:07 [PATCH v13 00/32] KVM: arm64: Implement support for SME Mark Brown
2026-07-19 23:07 ` [PATCH v13 01/32] arm64/sysreg: Define full value read/modify/write helpers Mark Brown
2026-07-19 23:07 ` [PATCH v13 02/32] arm64/fpsimd: Ensure all of ZCR_EL1 is initialised from idle Mark Brown
2026-07-23 12:58 ` Mark Rutland
2026-07-24 15:16 ` Mark Rutland
2026-07-19 23:07 ` [PATCH v13 03/32] arm64/fpsimd: Configure all ZCR/SMCR bits when loading task state Mark Brown
2026-07-19 23:07 ` [PATCH v13 04/32] arm64/fpsimd: Decide to save ZT0 and streaming mode FFR at bind time Mark Brown
2026-07-19 23:07 ` [PATCH v13 05/32] arm64/sve: Factor virtualizable VL discovery out of SVE specific code Mark Brown
2026-07-19 23:07 ` [PATCH v13 06/32] arm64/fpsimd: Determine maximum virtualisable SME vector length Mark Brown
2026-07-19 23:07 ` [PATCH v13 07/32] KVM: arm64: Remove bitrotted comment on handle_sve() Mark Brown
2026-07-19 23:07 ` [PATCH v13 08/32] KVM: arm64: Handle FEAT_IDST for guest accesses to hidden registers Mark Brown
2026-07-19 23:07 ` Mark Brown [this message]
2026-07-19 23:07 ` [PATCH v13 10/32] KVM: arm64: Rename SVE finalization constants to be more general Mark Brown
2026-07-19 23:07 ` [PATCH v13 11/32] KVM: arm64: Remove special case for FP state loading from ZCR_EL2 traps Mark Brown
2026-07-19 23:07 ` [PATCH v13 12/32] KVM: arm64: Define internal features for SME Mark Brown
2026-07-19 23:07 ` [PATCH v13 13/32] KVM: arm64: Rename sve_state_reg_region Mark Brown
2026-07-19 23:07 ` [PATCH v13 14/32] KVM: arm64: Store vector lengths in an array Mark Brown
2026-07-19 23:07 ` [PATCH v13 15/32] KVM: arm64: Factor SVE code out of fpsimd_lazy_switch_to_host() Mark Brown
2026-07-19 23:07 ` [PATCH v13 16/32] KVM: arm64: Document the KVM ABI for SME Mark Brown
2026-07-19 23:07 ` [PATCH v13 17/32] KVM: arm64: Implement SME vector length configuration Mark Brown
2026-07-19 23:07 ` [PATCH v13 18/32] KVM: arm64: Support SME control registers Mark Brown
2026-07-19 23:07 ` [PATCH v13 19/32] KVM: arm64: Support TPIDR2_EL0 Mark Brown
2026-07-19 23:07 ` [PATCH v13 20/32] KVM: arm64: Support SME identification registers for guests Mark Brown
2026-07-19 23:07 ` [PATCH v13 21/32] KVM: arm64: Support SME priority registers Mark Brown
2026-07-19 23:07 ` [PATCH v13 22/32] KVM: arm64: Support userspace access to streaming mode Z and P registers Mark Brown
2026-07-19 23:07 ` [PATCH v13 23/32] KVM: arm64: Flush register state on writes to SVCR.SM and SVCR.ZA Mark Brown
2026-07-19 23:07 ` [PATCH v13 24/32] KVM: arm64: Expose SME specific state to userspace Mark Brown
2026-07-19 23:07 ` [PATCH v13 25/32] KVM: arm64: Context switch SME state for guests Mark Brown
2026-07-19 23:07 ` [PATCH v13 26/32] KVM: arm64: Handle SME exceptions Mark Brown
2026-07-19 23:07 ` [PATCH v13 27/32] KVM: arm64: Expose SME to nested guests Mark Brown
2026-07-19 23:07 ` [PATCH v13 28/32] KVM: arm64: Provide interface for configuring and enabling SME for guests Mark Brown
2026-07-19 23:07 ` [PATCH v13 29/32] KVM: arm64: selftests: Remove spurious check for single bit safe values Mark Brown
2026-07-19 23:07 ` [PATCH v13 30/32] KVM: arm64: selftests: Skip impossible invalid value tests Mark Brown
2026-07-19 23:07 ` [PATCH v13 31/32] KVM: arm64: selftests: Add SME system registers to get-reg-list Mark Brown
2026-07-19 23:07 ` [PATCH v13 32/32] KVM: arm64: selftests: Add SME to set_id_regs test Mark Brown
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