5.15-stable review patch. If anyone has any objections, please let me know.
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From: Sean Christopherson seanjc@google.com
[ Upstream commit 07172206a26dcf3f0bf7c3ecaadd4242b008ea54 ]
Return -EINVAL instead of success if amd_ir_set_vcpu_affinity() is invoked without use_vapic; lying to KVM about whether or not the IRTE was configured to post IRQs is all kinds of bad.
Fixes: d98de49a53e4 ("iommu/amd: Enable vAPIC interrupt remapping mode by default") Signed-off-by: Sean Christopherson seanjc@google.com Message-ID: 20250404193923.1413163-6-seanjc@google.com Signed-off-by: Paolo Bonzini pbonzini@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iommu/amd/iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index d9251af7f3cf6..7d38cc5c04e68 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -3381,7 +3381,7 @@ static int amd_ir_set_vcpu_affinity(struct irq_data *data, void *vcpu_info) * we should not modify the IRTE */ if (!dev_data || !dev_data->use_vapic) - return 0; + return -EINVAL;
ir_data->cfg = irqd_cfg(data); pi_data->ir_data = ir_data;