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From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Cc: James Morse <james.morse@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Alexandru Elisei <alexandru.elisei@arm.com>,
	Oliver Upton <oupton@google.com>, Will Deacon <will@kernel.org>,
	Fuad Tabba <tabba@google.com>,
	Quentin Perret <qperret@google.com>,
	Mark Brown <broonie@kernel.org>,
	Reiji Watanabe <reijiw@google.com>,
	kernel-team@android.com
Subject: [PATCH v2 11/19] KVM: arm64: Move vcpu ON_UNSUPPORTED_CPU flag to the state flag set
Date: Fri, 10 Jun 2022 10:28:30 +0100	[thread overview]
Message-ID: <20220610092838.1205755-12-maz@kernel.org> (raw)
In-Reply-To: <20220610092838.1205755-1-maz@kernel.org>

The ON_UNSUPPORTED_CPU flag is only there to track the sad fact
that we have ended-up on a CPU where we cannot really run.

Since this is only for the host kernel's use, move it to the state
set.

Reviewed-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 arch/arm64/include/asm/kvm_host.h | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 4f147bdc5ce9..0c22514cb7c7 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -519,6 +519,8 @@ struct kvm_vcpu_arch {
 #define HOST_SVE_ENABLED	__vcpu_single_flag(sflags, BIT(0))
 /* SME enabled for EL0 */
 #define HOST_SME_ENABLED	__vcpu_single_flag(sflags, BIT(1))
+/* Physical CPU not in supported_cpus */
+#define ON_UNSUPPORTED_CPU	__vcpu_single_flag(sflags, BIT(2))
 
 /* Pointer to the vcpu's SVE FFR for sve_{save,load}_state() */
 #define vcpu_sve_pffr(vcpu) (kern_hyp_va((vcpu)->arch.sve_state) +	\
@@ -541,7 +543,6 @@ struct kvm_vcpu_arch {
 })
 
 /* vcpu_arch flags field values: */
-#define KVM_ARM64_ON_UNSUPPORTED_CPU	(1 << 15) /* Physical CPU not in supported_cpus */
 #define KVM_ARM64_WFIT			(1 << 17) /* WFIT instruction trapped */
 #define KVM_GUESTDBG_VALID_MASK (KVM_GUESTDBG_ENABLE | \
 				 KVM_GUESTDBG_USE_SW_BP | \
@@ -561,13 +562,13 @@ struct kvm_vcpu_arch {
 #endif
 
 #define vcpu_on_unsupported_cpu(vcpu)					\
-	((vcpu)->arch.flags & KVM_ARM64_ON_UNSUPPORTED_CPU)
+	vcpu_get_flag(vcpu, ON_UNSUPPORTED_CPU)
 
 #define vcpu_set_on_unsupported_cpu(vcpu)				\
-	((vcpu)->arch.flags |= KVM_ARM64_ON_UNSUPPORTED_CPU)
+	vcpu_set_flag(vcpu, ON_UNSUPPORTED_CPU)
 
 #define vcpu_clear_on_unsupported_cpu(vcpu)				\
-	((vcpu)->arch.flags &= ~KVM_ARM64_ON_UNSUPPORTED_CPU)
+	vcpu_clear_flag(vcpu, ON_UNSUPPORTED_CPU)
 
 #define vcpu_gp_regs(v)		(&(v)->arch.ctxt.regs)
 
-- 
2.34.1


  parent reply	other threads:[~2022-06-10  9:35 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-10  9:28 [PATCH v2 00/19] KVM/arm64: Refactoring the vcpu flags Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 01/19] KVM: arm64: Always start with clearing SVE flag on load Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 02/19] KVM: arm64: Always start with clearing SME " Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 03/19] KVM: arm64: Drop FP_FOREIGN_STATE from the hypervisor code Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 04/19] KVM: arm64: Move FP state ownership from flag to a tristate Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 05/19] KVM: arm64: Add helpers to manipulate vcpu flags among a set Marc Zyngier
2022-06-10 13:05   ` Fuad Tabba
2022-06-11 18:37   ` Reiji Watanabe
2022-06-12  8:59     ` Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 06/19] KVM: arm64: Add three sets of flags to the vcpu state Marc Zyngier
2022-06-11 18:41   ` Reiji Watanabe
2022-06-10  9:28 ` [PATCH v2 07/19] KVM: arm64: Move vcpu configuration flags into their own set Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 08/19] KVM: arm64: Move vcpu PC/Exception flags to the input flag set Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 09/19] KVM: arm64: Move vcpu debug/SPE/TRBE " Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 10/19] KVM: arm64: Move vcpu SVE/SME flags to the state " Marc Zyngier
2022-06-10  9:28 ` Marc Zyngier [this message]
2022-06-15 13:14   ` [PATCH v2 11/19] KVM: arm64: Move vcpu ON_UNSUPPORTED_CPU flag " Alexandru Elisei
2022-06-15 13:23     ` Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 12/19] KVM: arm64: Move vcpu WFIT " Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 13/19] KVM: arm64: Kill unused vcpu flags field Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 14/19] KVM: arm64: Convert vcpu sysregs_loaded_on_cpu to a state flag Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 15/19] KVM: arm64: Warn when PENDING_EXCEPTION and INCREMENT_PC are set together Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 16/19] KVM: arm64: Add build-time sanity checks for flags Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 17/19] KVM: arm64: Reduce the size of the vcpu flag members Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 18/19] KVM: arm64: Document why pause cannot be turned into a flag Marc Zyngier
2022-06-10  9:28 ` [PATCH v2 19/19] KVM: arm64: Move the handling of !FP outside of the fast path Marc Zyngier
2022-06-14  4:15   ` Reiji Watanabe
2022-06-29  9:58 ` [PATCH v2 00/19] KVM/arm64: Refactoring the vcpu flags Marc Zyngier

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