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iommu/amd: Re-factor guest virtual APIC (de-)activation code

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Re-factore the logic for activate/deactivate guest virtual APIC mode (GAM)
into helper functions, and export them for other drivers (e.g. SVM).
to support run-time activate/deactivate of SVM AVIC.

Cc: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Suthikulpanit, Suravee 2019-07-23 19:00:37 +00:00 • committed by Joerg Roedel
parent e21a712a96
commit b9c6ff94e4
3 changed files with 82 additions and 24 deletions
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12
include/linux/amd-iommu.h
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@ -184,6 +184,9 @@ extern int amd_iommu_register_ga_log_notifier(int (*notifier)(u32));
extern int
amd_iommu_update_ga(int cpu, bool is_run, void *data);
extern int amd_iommu_activate_guest_mode(void *data);
extern int amd_iommu_deactivate_guest_mode(void *data);
#else /* defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP) */
static inline int
@ -198,6 +201,15 @@ amd_iommu_update_ga(int cpu, bool is_run, void *data)
return 0;
}
static inline int amd_iommu_activate_guest_mode(void *data)
{
return 0;
}
static inline int amd_iommu_deactivate_guest_mode(void *data)
{
return 0;
}
#endif /* defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP) */
#endif /* _ASM_X86_AMD_IOMMU_H */