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| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2020-03-12 11:18:39 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2020-03-14 09:39:11 +0100 |
| commit | 730ad0ede130015a773229573559e97ba0943065 (patch) | |
| tree | 0ed7aac1335bb87fce1e1efe4f478c6c5ef492e6 /drivers/media/rc/zx-irdec.c | |
| parent | iommu/vt-d: Ignore devices with out-of-spec domain number (diff) | |
| download | linux-730ad0ede130015a773229573559e97ba0943065.tar.xz linux-730ad0ede130015a773229573559e97ba0943065.zip | |
iommu/amd: Fix IOMMU AVIC not properly update the is_run bit in IRTE
Commit b9c6ff94e43a ("iommu/amd: Re-factor guest virtual APIC
(de-)activation code") accidentally left out the ir_data pointer when
calling modity_irte_ga(), which causes the function amd_iommu_update_ga()
to return prematurely due to struct amd_ir_data.ref is NULL and
the "is_run" bit of IRTE does not get updated properly.
This results in bad I/O performance since IOMMU AVIC always generate GA Log
entry and notify IOMMU driver and KVM when it receives interrupt from the
PCI pass-through device instead of directly inject interrupt to the vCPU.
Fixes by passing ir_data when calling modify_irte_ga() as done previously.
Fixes: b9c6ff94e43a ("iommu/amd: Re-factor guest virtual APIC (de-)activation code")
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/media/rc/zx-irdec.c')
0 files changed, 0 insertions, 0 deletions