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[PATCH v8 4/5] intel_iommu: allow Extended Interrupt Mode when using use
From: |
Bui Quang Minh |
Subject: |
[PATCH v8 4/5] intel_iommu: allow Extended Interrupt Mode when using userspace APIC |
Date: |
Tue, 26 Sep 2023 23:06:36 +0700 |
As userspace APIC now supports x2APIC, intel interrupt remapping
hardware can be set to EIM mode when userspace local APIC is used.
Suggested-by: Joao Martins <joao.m.martins@oracle.com>
Acked-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com>
---
hw/i386/intel_iommu.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index c0ce896668..a3e4bf5497 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -4049,11 +4049,7 @@ static bool vtd_decide_config(IntelIOMMUState *s, Error
**errp)
ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF;
}
if (s->intr_eim == ON_OFF_AUTO_ON && !s->buggy_eim) {
- if (!kvm_irqchip_is_split()) {
- error_setg(errp, "eim=on requires accel=kvm,kernel-irqchip=split");
- return false;
- }
- if (kvm_enabled() && !kvm_enable_x2apic()) {
+ if (kvm_irqchip_is_split() && !kvm_enable_x2apic()) {
error_setg(errp, "eim=on requires support on the KVM side"
"(X2APIC_API, first shipped in v4.7)");
return false;
--
2.25.1
- [PATCH v8 0/5] Support x2APIC mode with TCG accelerator, Bui Quang Minh, 2023/09/26
- [PATCH v8 1/5] i386/tcg: implement x2APIC registers MSR access, Bui Quang Minh, 2023/09/26
- [PATCH v8 2/5] apic: add support for x2APIC mode, Bui Quang Minh, 2023/09/26
- [PATCH v8 3/5] apic, i386/tcg: add x2apic transitions, Bui Quang Minh, 2023/09/26
- [PATCH v8 4/5] intel_iommu: allow Extended Interrupt Mode when using userspace APIC,
Bui Quang Minh <=
- [PATCH v8 5/5] amd_iommu: report x2APIC support to the operating system, Bui Quang Minh, 2023/09/26
- Re: [PATCH v8 0/5] Support x2APIC mode with TCG accelerator, Bui Quang Minh, 2023/09/26