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[Qemu-devel] [PATCH v4 1/2] intel_iommu: introduce vtd_reset_caches()
From: |
Peter Xu |
Subject: |
[Qemu-devel] [PATCH v4 1/2] intel_iommu: introduce vtd_reset_caches() |
Date: |
Sat, 29 Sep 2018 11:36:14 +0800 |
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 <address@hidden>
---
hw/i386/intel_iommu.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 3dfada19a6..1137861a9d 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -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);
--
2.17.1