From: Yong-Xuan Wang <yongxuan.wang@sifive.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: greentime.hu@sifive.com, vincent.chen@sifive.com,
zong.li@sifive.com, Anup Patel <anup.patel@oss.qualcomm.com>,
kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
Yong-Xuan Wang <yongxuan.wang@sifive.com>
Subject: [PATCH] RISC-V: KVM: fix the Zicbo[m|z|p] block sizes in GET_ONE_REG
Date: Thu, 24 Sep 2026 01:10:10 -0700 [thread overview]
Message-ID: <20260924-kvm_fix_cbosize-v1-1-e57eec1b19cb@sifive.com> (raw)
The kvm_riscv_vcpu_get_reg_config() should return the block size when
the host supports the corresponding extensions.
Fixes: 298276da73ca ("RISC-V: KVM: Zicbo[m|z|p] block sizes should be always present in ONE_REG")
Signed-off-by: Yong-Xuan Wang <yongxuan.wang@sifive.com>
---
arch/riscv/kvm/vcpu_onereg.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c
index 877ba823fc74..f2b125569449 100644
--- a/arch/riscv/kvm/vcpu_onereg.c
+++ b/arch/riscv/kvm/vcpu_onereg.c
@@ -50,13 +50,13 @@ static int kvm_riscv_vcpu_get_reg_config(struct kvm_vcpu *vcpu,
reg_val = vcpu->arch.isa[0] & KVM_RISCV_BASE_ISA_MASK;
break;
case KVM_REG_RISCV_CONFIG_REG(zicbom_block_size):
- reg_val = (kvm_riscv_isa_check_host(ZICBOM)) ? 0 : riscv_cbom_block_size;
+ reg_val = (kvm_riscv_isa_check_host(ZICBOM)) ? riscv_cbom_block_size : 0;
break;
case KVM_REG_RISCV_CONFIG_REG(zicboz_block_size):
- reg_val = (kvm_riscv_isa_check_host(ZICBOZ)) ? 0 : riscv_cboz_block_size;
+ reg_val = (kvm_riscv_isa_check_host(ZICBOZ)) ? riscv_cboz_block_size : 0;
break;
case KVM_REG_RISCV_CONFIG_REG(zicbop_block_size):
- reg_val = (kvm_riscv_isa_check_host(ZICBOP)) ? 0 : riscv_cbop_block_size;
+ reg_val = (kvm_riscv_isa_check_host(ZICBOP)) ? riscv_cbop_block_size : 0;
break;
case KVM_REG_RISCV_CONFIG_REG(mvendorid):
reg_val = vcpu->arch.mvendorid;
---
base-commit: b5060a4aa33d7d78a8c1837ab08ef0c81ea96650
change-id: 20260924-kvm_fix_cbosize-1bf2cdd282cb
reply other threads:[~2026-09-24 8:10 UTC|newest]
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