From: Sean Christopherson <seanjc@google.com>
To: Madhavan Srinivasan <maddy@linux.ibm.com>,
Anup Patel <anup@brainfault.org>, Paul Walmsley <pjw@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Kiryl Shutsemau <kas@kernel.org>,
Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: "Nicholas Piggin" <npiggin@gmail.com>,
"Atish Patra" <atish.patra@linux.dev>,
"Alexandre Ghiti" <alex@ghiti.fr>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org,
kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org,
x86@kernel.org, linux-coco@lists.linux.dev,
linux-kernel@vger.kernel.org,
"Jean-Christophe Guillain" <jean-christophe@guillain.net>,
"Paweł S" <spawel523@gmail.com>
Subject: [PATCH v2 3/7] KVM: RISC-V: Use kvm_is_vcpu_creation_in_progress() instead of open-coded equivalent
Date: Mon, 21 Sep 2026 10:44:41 -0700 [thread overview]
Message-ID: <20260921174445.911676-4-seanjc@google.com> (raw)
In-Reply-To: <20260921174445.911676-1-seanjc@google.com>
Use kvm_is_vcpu_creation_in_progress() instead of an open-coded equivalent
during AIA initialization. Unlike similar vGIC code in arm64, the relevant
RISC-V code runs under kvm->lock, i.e. can use the standard API without
hitting lockdep false positive.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
arch/riscv/kvm/aia_device.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/kvm/aia_device.c b/arch/riscv/kvm/aia_device.c
index efc7c0bcfba9..97833a04268a 100644
--- a/arch/riscv/kvm/aia_device.c
+++ b/arch/riscv/kvm/aia_device.c
@@ -237,7 +237,7 @@ static int aia_init(struct kvm *kvm)
return -EBUSY;
/* We might be in the middle of creating a VCPU? */
- if (kvm->created_vcpus != atomic_read(&kvm->online_vcpus))
+ if (kvm_is_vcpu_creation_in_progress(kvm))
return -EBUSY;
/* Number of sources should be less than or equals number of IDs */
--
2.55.0.1082.g2b9226bbc0-goog
next prev parent reply other threads:[~2026-09-21 17:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-21 17:44 [PATCH v2 0/7] KVM: Serialize vCPU creation and revert vcpu_ids tracking Sean Christopherson
2026-09-21 17:44 ` [PATCH v2 1/7] KVM: Reject attempts to lock all vCPUs if vCPU creation is in-progress Sean Christopherson
2026-09-21 17:44 ` [PATCH v2 2/7] KVM: arm64: vgic: Rely on vCPU creation check in "trylock all vCPUs" Sean Christopherson
2026-09-21 17:44 ` Sean Christopherson [this message]
2026-09-21 17:44 ` [PATCH v2 4/7] KVM: Protect all of kvm_vm_ioctl_create_vcpu() with kvm->lock Sean Christopherson
2026-09-21 17:44 ` [PATCH v2 5/7] KVM: Move check for existing vCPU ID to the top of vCPU creation Sean Christopherson
2026-09-21 17:44 ` [PATCH v2 6/7] Revert "KVM: Check for duplicate vcpu_id as early as possible" Sean Christopherson
2026-09-21 17:44 ` [PATCH v2 7/7] KVM: WARN if vCPU creation is in-progress when locking all vCPUs Sean Christopherson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260921174445.911676-4-seanjc@google.com \
--to=seanjc@google.com \
--cc=alex@ghiti.fr \
--cc=anup@brainfault.org \
--cc=aou@eecs.berkeley.edu \
--cc=atish.patra@linux.dev \
--cc=dave.hansen@linux.intel.com \
--cc=jean-christophe@guillain.net \
--cc=kas@kernel.org \
--cc=kvm-riscv@lists.infradead.org \
--cc=kvm@vger.kernel.org \
--cc=linux-coco@lists.linux.dev \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=maddy@linux.ibm.com \
--cc=npiggin@gmail.com \
--cc=palmer@dabbelt.com \
--cc=pbonzini@redhat.com \
--cc=pjw@kernel.org \
--cc=rick.p.edgecombe@intel.com \
--cc=spawel523@gmail.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®