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From: Inochi Amaoto <inochiama@gmail.com>
To: Anup Patel <anup@brainfault.org>,
	Atish Patra <atish.patra@linux.dev>,
	Paul Walmsley <pjw@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>
Cc: Inochi Amaoto <inochiama@gmail.com>,
	kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
	linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	Yixun Lan <dlan@gentoo.org>, Longbin Li <looong.bin@gmail.com>
Subject: [PATCH v3 4/4] RISC-V: KVM: Mark the reset callback of FWFT extension always dirties CSR
Date: Thu, 30 Jul 2026 07:25:25 +0800	[thread overview]
Message-ID: <20260729232527.139183-5-inochiama@gmail.com> (raw)
In-Reply-To: <20260729232527.139183-1-inochiama@gmail.com>

As the CSR is only flushed when the csr_dirty is set, always set the
csr_dirty field in kvm_sbi_ext_fwft_reset() so the CSR change can take
effect immediately. This unconditional set should be safe as all
supported FWFT features change the CSR state currently.

Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
---
 arch/riscv/kvm/vcpu_sbi_fwft.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/riscv/kvm/vcpu_sbi_fwft.c b/arch/riscv/kvm/vcpu_sbi_fwft.c
index 56fb59afe02a..2e35e7e12327 100644
--- a/arch/riscv/kvm/vcpu_sbi_fwft.c
+++ b/arch/riscv/kvm/vcpu_sbi_fwft.c
@@ -601,6 +601,8 @@ static void kvm_sbi_ext_fwft_reset(struct kvm_vcpu *vcpu)
 		if (feature->reset)
 			feature->reset(vcpu);
 	}
+
+	vcpu->arch.csr_dirty = true;
 }
 
 static void kvm_sbi_ext_fwft_validate(struct kvm_vcpu *vcpu)
-- 
2.55.0


-- 
kvm-riscv mailing list
kvm-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kvm-riscv

WARNING: multiple messages have this Message-ID (diff)
From: Inochi Amaoto <inochiama@gmail.com>
To: Anup Patel <anup@brainfault.org>,
	Atish Patra <atish.patra@linux.dev>,
	Paul Walmsley <pjw@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>
Cc: Inochi Amaoto <inochiama@gmail.com>,
	kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
	linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	Yixun Lan <dlan@gentoo.org>, Longbin Li <looong.bin@gmail.com>
Subject: [PATCH v3 4/4] RISC-V: KVM: Mark the reset callback of FWFT extension always dirties CSR
Date: Thu, 30 Jul 2026 07:25:25 +0800	[thread overview]
Message-ID: <20260729232527.139183-5-inochiama@gmail.com> (raw)
In-Reply-To: <20260729232527.139183-1-inochiama@gmail.com>

As the CSR is only flushed when the csr_dirty is set, always set the
csr_dirty field in kvm_sbi_ext_fwft_reset() so the CSR change can take
effect immediately. This unconditional set should be safe as all
supported FWFT features change the CSR state currently.

Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
---
 arch/riscv/kvm/vcpu_sbi_fwft.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/riscv/kvm/vcpu_sbi_fwft.c b/arch/riscv/kvm/vcpu_sbi_fwft.c
index 56fb59afe02a..2e35e7e12327 100644
--- a/arch/riscv/kvm/vcpu_sbi_fwft.c
+++ b/arch/riscv/kvm/vcpu_sbi_fwft.c
@@ -601,6 +601,8 @@ static void kvm_sbi_ext_fwft_reset(struct kvm_vcpu *vcpu)
 		if (feature->reset)
 			feature->reset(vcpu);
 	}
+
+	vcpu->arch.csr_dirty = true;
 }
 
 static void kvm_sbi_ext_fwft_validate(struct kvm_vcpu *vcpu)
-- 
2.55.0


WARNING: multiple messages have this Message-ID (diff)
From: Inochi Amaoto <inochiama@gmail.com>
To: Anup Patel <anup@brainfault.org>,
	Atish Patra <atish.patra@linux.dev>,
	Paul Walmsley <pjw@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>
Cc: Inochi Amaoto <inochiama@gmail.com>,
	kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
	linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	Yixun Lan <dlan@gentoo.org>, Longbin Li <looong.bin@gmail.com>
Subject: [PATCH v3 4/4] RISC-V: KVM: Mark the reset callback of FWFT extension always dirties CSR
Date: Thu, 30 Jul 2026 07:25:25 +0800	[thread overview]
Message-ID: <20260729232527.139183-5-inochiama@gmail.com> (raw)
In-Reply-To: <20260729232527.139183-1-inochiama@gmail.com>

As the CSR is only flushed when the csr_dirty is set, always set the
csr_dirty field in kvm_sbi_ext_fwft_reset() so the CSR change can take
effect immediately. This unconditional set should be safe as all
supported FWFT features change the CSR state currently.

Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
---
 arch/riscv/kvm/vcpu_sbi_fwft.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/riscv/kvm/vcpu_sbi_fwft.c b/arch/riscv/kvm/vcpu_sbi_fwft.c
index 56fb59afe02a..2e35e7e12327 100644
--- a/arch/riscv/kvm/vcpu_sbi_fwft.c
+++ b/arch/riscv/kvm/vcpu_sbi_fwft.c
@@ -601,6 +601,8 @@ static void kvm_sbi_ext_fwft_reset(struct kvm_vcpu *vcpu)
 		if (feature->reset)
 			feature->reset(vcpu);
 	}
+
+	vcpu->arch.csr_dirty = true;
 }
 
 static void kvm_sbi_ext_fwft_validate(struct kvm_vcpu *vcpu)
-- 
2.55.0


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

  parent reply	other threads:[~2026-07-29 23:25 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-29 23:25 [PATCH v3 0/4] RISC-V: KVM: Cleanup SBI extension status when disable Inochi Amaoto
2026-07-29 23:25 ` Inochi Amaoto
2026-07-29 23:25 ` Inochi Amaoto
2026-07-29 23:25 ` [PATCH v3 1/4] RISC-V: KVM: Add SBI extension validate callback Inochi Amaoto
2026-07-29 23:25   ` Inochi Amaoto
2026-07-29 23:25   ` Inochi Amaoto
2026-07-29 23:39   ` sashiko-bot
2026-07-29 23:25 ` [PATCH v3 2/4] RISC-V: KVM: Add SBI FWFT validation support Inochi Amaoto
2026-07-29 23:25   ` Inochi Amaoto
2026-07-29 23:25   ` Inochi Amaoto
2026-07-29 23:52   ` sashiko-bot
2026-07-29 23:25 ` [PATCH v3 3/4] RISC-V: KVM: Reset the SBI extension when disable it Inochi Amaoto
2026-07-29 23:25   ` Inochi Amaoto
2026-07-29 23:25   ` Inochi Amaoto
2026-07-30  6:34   ` Anup Patel
2026-07-30  6:34     ` Anup Patel
2026-07-30  6:34     ` Anup Patel
2026-07-29 23:25 ` Inochi Amaoto [this message]
2026-07-29 23:25   ` [PATCH v3 4/4] RISC-V: KVM: Mark the reset callback of FWFT extension always dirties CSR Inochi Amaoto
2026-07-29 23:25   ` Inochi Amaoto
2026-07-29 23:54   ` sashiko-bot
2026-07-30  6:36   ` Anup Patel
2026-07-30  6:36     ` Anup Patel
2026-07-30  6:36     ` Anup Patel
2026-07-30  6:40 ` [PATCH v3 0/4] RISC-V: KVM: Cleanup SBI extension status when disable Anup Patel
2026-07-30  6:40   ` Anup Patel
2026-07-30  6:40   ` Anup Patel

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