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[Qemu-devel] [PATCH V2 04/11] intel_iommu: allocate new key when creatin
From: |
Jason Wang |
Subject: |
[Qemu-devel] [PATCH V2 04/11] intel_iommu: allocate new key when creating new address space |
Date: |
Thu, 3 Nov 2016 17:27:16 +0800 |
We use the pointer to stack for key for new address space, this will break hash
table searching, fixing by g_malloc() a new key instead.
Cc: Michael S. Tsirkin <address@hidden>
Cc: Paolo Bonzini <address@hidden>
Cc: Richard Henderson <address@hidden>
Cc: Eduardo Habkost <address@hidden>
Acked-by: Peter Xu <address@hidden>
Signed-off-by: Jason Wang <address@hidden>
---
hw/i386/intel_iommu.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 833c7a6..eb57cbf 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -2326,12 +2326,13 @@ VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s,
PCIBus *bus, int devfn)
char name[128];
if (!vtd_bus) {
+ uintptr_t *new_key = g_malloc(sizeof(*new_key));
+ *new_key = (uintptr_t)bus;
/* No corresponding free() */
vtd_bus = g_malloc0(sizeof(VTDBus) + sizeof(VTDAddressSpace *) * \
X86_IOMMU_PCI_DEVFN_MAX);
vtd_bus->bus = bus;
- key = (uintptr_t)bus;
- g_hash_table_insert(s->vtd_as_by_busptr, &key, vtd_bus);
+ g_hash_table_insert(s->vtd_as_by_busptr, new_key, vtd_bus);
}
vtd_dev_as = vtd_bus->dev_as[devfn];
--
2.7.4
- [Qemu-devel] [PATCH V2 00/11] vhost device IOTLB support, Jason Wang, 2016/11/03
- [Qemu-devel] [PATCH V2 01/11] intel_iommu: fixing source id during IOTLB hash key calculation, Jason Wang, 2016/11/03
- [Qemu-devel] [PATCH V2 03/11] intel_iommu: name vtd address space with devfn, Jason Wang, 2016/11/03
- [Qemu-devel] [PATCH V2 02/11] virtio: convert to use DMA api, Jason Wang, 2016/11/03
- [Qemu-devel] [PATCH V2 04/11] intel_iommu: allocate new key when creating new address space,
Jason Wang <=
- [Qemu-devel] [PATCH V2 05/11] exec: introduce address_space_get_iotlb_entry(), Jason Wang, 2016/11/03
- [Qemu-devel] [PATCH V2 06/11] intel_iommu: support device iotlb descriptor, Jason Wang, 2016/11/03
- [Qemu-devel] [PATCH V2 07/11] virtio-pci: address space translation service (ATS) support, Jason Wang, 2016/11/03