RISC-V: KVM: Propagate interrupted G-stage faults

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__kvm_faultin_pfn() reports an interrupted host page fault with
KVM_PFN_ERR_SIGPENDING. RISC-V currently handles it as a generic
error PFN and returns -EFAULT.

Return -EINTR for the signal-pending sentinel so callers can distinguish
an interrupted fault from an invalid userspace mapping. Do not log the
expected interruption as a vCPU exit error.

Fixes: 9d05c1fee8 ("RISC-V: KVM: Implement stage2 page table programming")
Cc: stable@vger.kernel.org
Signed-off-by: Xie Bo <xb@ultrarisc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260810051544.3953925-3-xb@ultrarisc.com
Signed-off-by: Anup Patel <anup@brainfault.org>

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Xie Bo 2026-08-10 13:15:44 +08:00 • committed by Anup Patel

parent ed54fdb460

commit f41fb17143

2 changed files with 3 additions and 1 deletions

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arch/riscv/kvm/mmu.c

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2

arch/riscv/kvm/vcpu_exit.c

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