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intel_iommu: introduce vtd_reset_caches() 

Provide the function and use it in vtd_init().  Used to reset both
context entry cache and iotlb cache for the whole IOMMU unit.

Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Peter Xu 2018-09-29 11:36:14 +08:00 committed by Michael S. Tsirkin
parent 9bb192a4fc
commit 06aba4ca52
1 changed files with 9 additions and 4 deletions
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13
hw/i386/intel_iommu.c
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@ -227,6 +227,14 @@ static void vtd_reset_iotlb(IntelIOMMUState *s)
vtd_iommu_unlock(s);
}
static void vtd_reset_caches(IntelIOMMUState *s)
{
vtd_iommu_lock(s);
vtd_reset_iotlb_locked(s);
vtd_reset_context_cache_locked(s);
vtd_iommu_unlock(s);
}
static uint64_t vtd_get_iotlb_key(uint64_t gfn, uint16_t source_id,
uint32_t level)
{
@ -3160,10 +3168,7 @@ static void vtd_init(IntelIOMMUState *s)
s->cap |= VTD_CAP_CM;
}
vtd_iommu_lock(s);
vtd_reset_context_cache_locked(s);
vtd_reset_iotlb_locked(s);
vtd_iommu_unlock(s);
vtd_reset_caches(s);
/* Define registers with default values and bit semantics */
vtd_define_long(s, DMAR_VER_REG, 0x10UL, 0, 0);