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[Qemu-devel] [PATCH RFC v3 06/14] intel_iommu: vtd_slpt_level_shift chec
From: |
Peter Xu |
Subject: |
[Qemu-devel] [PATCH RFC v3 06/14] intel_iommu: vtd_slpt_level_shift check level |
Date: |
Fri, 13 Jan 2017 11:06:32 +0800 |
This helps in debugging incorrect level passed in.
Signed-off-by: Peter Xu <address@hidden>
---
hw/i386/intel_iommu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index b4166e0..b4019d0 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -168,6 +168,7 @@ static gboolean vtd_hash_remove_by_domain(gpointer key,
gpointer value,
/* The shift of an addr for a certain level of paging structure */
static inline uint32_t vtd_slpt_level_shift(uint32_t level)
{
+ assert(level != 0);
return VTD_PAGE_SHIFT_4K + (level - 1) * VTD_SL_LEVEL_BITS;
}
--
2.7.4
[Qemu-devel] [PATCH RFC v3 08/14] memory: provide iommu_replay_all(), Peter Xu, 2017/01/12
[Qemu-devel] [PATCH RFC v3 09/14] memory: introduce memory_region_notify_one(), Peter Xu, 2017/01/12