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iommu/amd: Introduce amd_iommu_update_ga()

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Introduces a new IOMMU API, amd_iommu_update_ga(), which allows
KVM (SVM) to update existing posted interrupt IOMMU IRTE when
load/unload vcpu.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Suravee Suthikulpanit
2016-08-23 13:52:38 -05:00
committed by Joerg Roedel
parent bd6fcefc66
commit 8dbea3fd7b
3 changed files with 49 additions and 0 deletions
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9
include/linux/amd-iommu.h
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@@ -179,6 +179,9 @@ static inline int amd_iommu_detect(void) { return -ENODEV; }
/* IOMMU AVIC Function */
extern int amd_iommu_register_ga_log_notifier(int (*notifier)(u32));
extern int
amd_iommu_update_ga(int cpu, bool is_run, void *data);
#else /* defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP) */
static inline int
@@ -187,6 +190,12 @@ amd_iommu_register_ga_log_notifier(int (*notifier)(u32))
return 0;
}
static inline int
amd_iommu_update_ga(int cpu, bool is_run, void *data)
{
return 0;
}
#endif /* defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP) */
#endif /* _ASM_X86_AMD_IOMMU_H */