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 v3 10/10] docs: kvm: riscv: document EBUSY in KVM_SET_ONE_REG
Date: Thu, 3 Aug 2023 11:00:22 -0300 [thread overview]
Message-ID: <20230803140022.399333-11-dbarboza@ventanamicro.com> (raw)
In-Reply-To: <20230803140022.399333-1-dbarboza@ventanamicro.com>
The EBUSY errno is being used for KVM_SET_ONE_REG as a way to tell
userspace that a given reg can't be changed after the vcpu started.
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
---
Documentation/virt/kvm/api.rst | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
index c0ddd3035462..3249fb56cc69 100644
--- a/Documentation/virt/kvm/api.rst
+++ b/Documentation/virt/kvm/api.rst
@@ -2259,6 +2259,8 @@ Errors:
EINVAL invalid register ID, or no such register or used with VMs in
protected virtualization mode on s390
EPERM (arm64) register access not allowed before vcpu finalization
+ EBUSY (riscv) changing register value not allowed after the vcpu
+ has run at least once
====== ============================================================
(These error codes are indicative only: do not rely on a specific error
--
2.41.0
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next prev parent reply other threads:[~2023-08-03 14:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-03 14:00 [PATCH v3 00/10] RISC-V: KVM: change get_reg/set_reg error codes Daniel Henrique Barboza
2023-08-03 14:00 ` [PATCH v3 01/10] RISC-V: KVM: return ENOENT in *_one_reg() when reg is unknown Daniel Henrique Barboza
2023-08-03 14:00 ` [PATCH v3 02/10] RISC-V: KVM: use ENOENT in *_one_reg() when extension is unavailable Daniel Henrique Barboza
2023-08-03 14:00 ` [PATCH v3 03/10] RISC-V: KVM: do not EOPNOTSUPP in set_one_reg() zicbo(m|z) Daniel Henrique Barboza
2023-08-03 14:00 ` [PATCH v3 04/10] RISC-V: KVM: do not EOPNOTSUPP in set KVM_REG_RISCV_TIMER_REG Daniel Henrique Barboza
2023-08-03 14:00 ` [PATCH v3 05/10] RISC-V: KVM: use EBUSY when !vcpu->arch.ran_atleast_once Daniel Henrique Barboza
2023-08-03 14:00 ` [PATCH v3 06/10] RISC-V: KVM: avoid EBUSY when writing same ISA val Daniel Henrique Barboza
2023-08-03 14:00 ` [PATCH v3 07/10] RISC-V: KVM: avoid EBUSY when writing the same machine ID val Daniel Henrique Barboza
2023-08-03 14:00 ` [PATCH v3 08/10] RISC-V: KVM: avoid EBUSY when writing the same isa_ext val Daniel Henrique Barboza
2023-08-03 14:00 ` [PATCH v3 09/10] RISC-V: KVM: Improve vector save/restore errors Daniel Henrique Barboza
2023-08-03 14:00 ` Daniel Henrique Barboza [this message]
2023-08-03 14:56 ` [PATCH v3 00/10] RISC-V: KVM: change get_reg/set_reg error codes Daniel Henrique Barboza
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