Re: [PATCH] RISC-V: KVM: Fix lost virtual interrupts during IRQ sync

Xie Bo <[email protected]> Mon, 13 Jul 2026 14:48:14 +0800

Newsgroups	org.infradead.lists.kvm-riscv,org.infradead.lists.linux-riscv,org.kernel.vger.kvm,org.kernel.vger.linux-kernel,org.kernel.vger.stable
Message-ID	<[email protected]>

Hi Anup,

I have addressed all three suggestions in v3:

- use non-atomic bitmap operations while holding irqs_pending_lock;
- hold irqs_pending_lock across the AIA sync, flush, and pending checks,
  with lockdep assertions in the AIA helpers; and
- protect kvm_riscv_vcpu_has_interrupts() with the same lock.

I also rebased the patch onto Linux 7.2-rc3. Both RV64 and RV32 KVM
builds pass, and checkpatch reports no issues.

The v3 patch follows this reply.

Regards,
Xie Bo


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