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[Qemu-devel] [PATCH v3 9/9] x86_iommu/amd: Enable Guest virtual APIC sup
From: |
Singh, Brijesh |
Subject: |
[Qemu-devel] [PATCH v3 9/9] x86_iommu/amd: Enable Guest virtual APIC support |
Date: |
Fri, 21 Sep 2018 14:25:43 +0000 |
Now that amd-iommu support interrupt remapping, enable the GASup in IVRS
table and GASup in extended feature register to indicate that IOMMU
support guest virtual APIC mode. GASup provides option to guest OS to
make use of 128-bit IRTE.
Note that the GAMSup is set to zero to indicate that amd-iommu does not
support guest virtual APIC mode (aka AVIC) which would be used for the
nested VMs.
See Table 21 from IOMMU spec for interrupt virtualization controls
Signed-off-by: Brijesh Singh <address@hidden>
Reviewed-by: Peter Xu <address@hidden>
Cc: Peter Xu <address@hidden>
Cc: "Michael S. Tsirkin" <address@hidden>
Cc: Paolo Bonzini <address@hidden>
Cc: Richard Henderson <address@hidden>
Cc: Eduardo Habkost <address@hidden>
Cc: Marcel Apfelbaum <address@hidden>
Cc: Tom Lendacky <address@hidden>
Cc: Suravee Suthikulpanit <address@hidden>
---
hw/i386/acpi-build.c | 3 ++-
hw/i386/amd_iommu.h | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 21c99a1..1ae4092 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2567,7 +2567,8 @@ build_amd_iommu(GArray *table_data, BIOSLinker *linker)
build_append_int_noprefix(table_data,
(48UL << 30) | /* HATS */
(48UL << 28) | /* GATS */
- (1UL << 2), /* GTSup */
+ (1UL << 2) | /* GTSup */
+ (1UL << 6), /* GASup */
4);
/*
* Type 1 device entry reporting all devices
diff --git a/hw/i386/amd_iommu.h b/hw/i386/amd_iommu.h
index 8061e9c..687fcd8 100644
--- a/hw/i386/amd_iommu.h
+++ b/hw/i386/amd_iommu.h
@@ -176,7 +176,7 @@
/* extended feature support */
#define AMDVI_EXT_FEATURES (AMDVI_FEATURE_PREFETCH | AMDVI_FEATURE_PPR | \
AMDVI_FEATURE_IA | AMDVI_FEATURE_GT | AMDVI_FEATURE_HE | \
- AMDVI_GATS_MODE | AMDVI_HATS_MODE)
+ AMDVI_GATS_MODE | AMDVI_HATS_MODE | AMDVI_FEATURE_GA)
/* capabilities header */
#define AMDVI_CAPAB_FEATURES (AMDVI_CAPAB_FLAT_EXT | \
--
2.7.4
- Re: [Qemu-devel] [PATCH v3 3/9] x86_iommu/amd: remove V=1 check from amdvi_validate_dte(), (continued)
- [Qemu-devel] [PATCH v3 2/9] x86_iommu: move vtd_generate_msi_message in common file, Singh, Brijesh, 2018/09/21
- [Qemu-devel] [PATCH v3 4/9] x86_iommu/amd: make the address space naming consistent with intel-iommu, Singh, Brijesh, 2018/09/21
- [Qemu-devel] [PATCH v3 1/9] x86_iommu: move the kernel-irqchip check in common code, Singh, Brijesh, 2018/09/21
- [Qemu-devel] [PATCH v3 5/9] x86_iommu/amd: Prepare for interrupt remap support, Singh, Brijesh, 2018/09/21
- [Qemu-devel] [PATCH v3 6/9] x86_iommu/amd: Add interrupt remap support when VAPIC is not enabled, Singh, Brijesh, 2018/09/21
- [Qemu-devel] [PATCH v3 7/9] i386: acpi: add IVHD device entry for IOAPIC, Singh, Brijesh, 2018/09/21
- [Qemu-devel] [PATCH v3 9/9] x86_iommu/amd: Enable Guest virtual APIC support,
Singh, Brijesh <=
- Message not available