From: Inochi Amaoto <inochiama@gmail.com>
To: Paul Walmsley <pjw@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Alexandre Ghiti <alex@ghiti.fr>, Anup Patel <anup@brainfault.org>,
Atish Patra <atish.patra@linux.dev>,
Paolo Bonzini <pbonzini@redhat.com>,
Shuah Khan <shuah@kernel.org>, Andy Chiu <andybnac@gmail.com>,
Charlie Jenkins <charlie@rivosinc.com>,
Deepak Gupta <debug@rivosinc.com>, Thomas Huth <thuth@redhat.com>,
Inochi Amaoto <inochiama@gmail.com>,
Sergey Matyukevich <geomatsi@gmail.com>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
linux-kselftest@vger.kernel.org, Yixun Lan <dlan@gentoo.org>,
Longbin Li <looong.bin@gmail.com>
Subject: [PATCH v6 6/8] RISC-V: KVM: Delegate SPELP bit to VS/VU mode if landing pad is enabled.
Date: Mon, 13 Jul 2026 09:02:59 +0800 [thread overview]
Message-ID: <20260713010302.303278-7-inochiama@gmail.com> (raw)
In-Reply-To: <20260713010302.303278-1-inochiama@gmail.com>
Delegate the newly added SPELP bit from Zicfilp extension to VS/VU mode
if it enables landing pad support.
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
---
arch/riscv/kvm/vcpu_exit.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/riscv/kvm/vcpu_exit.c b/arch/riscv/kvm/vcpu_exit.c
index 12eebeabdf14..92a3ea7c7ffb 100644
--- a/arch/riscv/kvm/vcpu_exit.c
+++ b/arch/riscv/kvm/vcpu_exit.c
@@ -154,6 +154,13 @@ void kvm_riscv_vcpu_trap_redirect(struct kvm_vcpu *vcpu,
/* Clear Guest SSTATUS.SIE bit */
vsstatus &= ~SR_SIE;
+ /* Change Guest SSTATUS.SPELP bit */
+ if (vcpu->arch.cfg.henvcfg & ENVCFG_LPE) {
+ vsstatus &= ~SR_SPELP;
+ vsstatus |= vcpu->arch.guest_context.sstatus & SR_SPELP;
+ vcpu->arch.guest_context.sstatus &= ~SR_SPELP;
+ }
+
/* Update Guest SSTATUS */
ncsr_write(CSR_VSSTATUS, vsstatus);
--
2.55.0
next prev parent reply other threads:[~2026-07-13 1:04 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-13 1:02 [PATCH v6 0/8] RISC-V: KVM: Add Svadu/Zicfiss/Zicfilp FWFT support Inochi Amaoto
2026-07-13 1:02 ` [PATCH v6 1/8] RISC-V: KVM: Add support for Svadu FWFT features Inochi Amaoto
2026-07-13 1:02 ` [PATCH v6 2/8] KVM: riscv: selftests: add Svadu FWFT extension to get-reg-list test Inochi Amaoto
2026-07-13 1:02 ` [PATCH v6 3/8] RISC-V: KVM: Allow Zicfiss/Zicfilp extensions for Guest/VM Inochi Amaoto
2026-07-13 1:17 ` sashiko-bot
2026-07-13 1:02 ` [PATCH v6 4/8] RISC-V: KVM: Add ssp context save/restore Inochi Amaoto
2026-07-13 1:20 ` sashiko-bot
2026-07-13 1:02 ` [PATCH v6 5/8] RISC-V: KVM: Handle software-check exits for VCPU Inochi Amaoto
2026-07-13 1:02 ` Inochi Amaoto [this message]
2026-07-13 1:17 ` [PATCH v6 6/8] RISC-V: KVM: Delegate SPELP bit to VS/VU mode if landing pad is enabled sashiko-bot
2026-07-13 1:03 ` [PATCH v6 7/8] RISC-V: KVM: Add support for control-flow integrity FWFT features Inochi Amaoto
2026-07-13 1:03 ` [PATCH v6 8/8] KVM: riscv: selftests: add Zicfiss/Zicfilp extension to get-reg-list test Inochi Amaoto
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