From: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
To: kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org,
kvm@vger.kernel.org
Cc: anup@brainfault.org, atishp@atishpatra.org,
ajones@ventanamicro.com,
Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Subject: [PATCH v2 2/9] RISC-V: KVM: use ENOENT in *_one_reg() when extension is unavailable
Date: Tue, 1 Aug 2023 19:26:22 -0300 [thread overview]
Message-ID: <20230801222629.210929-3-dbarboza@ventanamicro.com> (raw)
In-Reply-To: <20230801222629.210929-1-dbarboza@ventanamicro.com>
Following a similar logic as the previous patch let's minimize the EINVAL
usage in *_one_reg() APIs by using ENOENT when an extension that
implements the reg is not available.
For consistency we're also replacing an EOPNOTSUPP instance that should
be an ENOENT since it's an "extension is not available" error.
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.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 ba63522be060..291dba76bac6 100644
--- a/arch/riscv/kvm/vcpu_onereg.c
+++ b/arch/riscv/kvm/vcpu_onereg.c
@@ -135,12 +135,12 @@ static int kvm_riscv_vcpu_get_reg_config(struct kvm_vcpu *vcpu,
break;
case KVM_REG_RISCV_CONFIG_REG(zicbom_block_size):
if (!riscv_isa_extension_available(vcpu->arch.isa, ZICBOM))
- return -EINVAL;
+ return -ENOENT;
reg_val = riscv_cbom_block_size;
break;
case KVM_REG_RISCV_CONFIG_REG(zicboz_block_size):
if (!riscv_isa_extension_available(vcpu->arch.isa, ZICBOZ))
- return -EINVAL;
+ return -ENOENT;
reg_val = riscv_cboz_block_size;
break;
case KVM_REG_RISCV_CONFIG_REG(mvendorid):
@@ -452,7 +452,7 @@ static int riscv_vcpu_set_isa_ext_single(struct kvm_vcpu *vcpu,
host_isa_ext = kvm_isa_ext_arr[reg_num];
if (!__riscv_isa_extension_available(NULL, host_isa_ext))
- return -EOPNOTSUPP;
+ return -ENOENT;
if (!vcpu->arch.ran_atleast_once) {
/*
--
2.41.0
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next prev parent reply other threads:[~2023-08-01 22:26 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-01 22:26 [PATCH v2 0/9] RISC-V: KVM: change get_reg/set_reg error codes Daniel Henrique Barboza
2023-08-01 22:26 ` [PATCH v2 1/9] RISC-V: KVM: return ENOENT in *_one_reg() when reg is unknown Daniel Henrique Barboza
2023-08-01 22:26 ` Daniel Henrique Barboza [this message]
2023-08-01 22:26 ` [PATCH v2 3/9] RISC-V: KVM: do not EOPNOTSUPP in set_one_reg() zicbo(m|z) Daniel Henrique Barboza
2023-08-01 22:26 ` [PATCH v2 4/9] RISC-V: KVM: do not EOPNOTSUPP in set KVM_REG_RISCV_TIMER_REG Daniel Henrique Barboza
2023-08-01 22:26 ` [PATCH v2 5/9] RISC-V: KVM: use EBUSY when !vcpu->arch.ran_atleast_once Daniel Henrique Barboza
2023-08-01 22:26 ` [PATCH v2 6/9] RISC-V: KVM: avoid EBUSY when writing same ISA val Daniel Henrique Barboza
2023-08-01 22:26 ` [PATCH v2 7/9] RISC-V: KVM: avoid EBUSY when writing the same machine ID val Daniel Henrique Barboza
2023-08-01 22:26 ` [PATCH v2 8/9] RISC-V: KVM: avoid EBUSY when writing the same isa_ext val Daniel Henrique Barboza
2023-08-01 22:26 ` [PATCH v2 9/9] docs: kvm: riscv: document EBUSY in KVM_SET_ONE_REG Daniel Henrique Barboza
2023-08-02 8:17 ` Andrew Jones
2023-08-02 9:04 ` [PATCH v2 0/9] RISC-V: KVM: change get_reg/set_reg error codes Andrew Jones
2023-08-02 9:06 ` Andrew Jones
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