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hw/i386/intel_iommu: Fix trivial endianness problems

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After reading the guest memory with dma_memory_read(), we have
to make sure that we byteswap the little endian data to the host's
byte order.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230802135723.178083-2-thuth@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Thomas Huth 2023-08-02 15:57:18 +02:00 • committed by Michael S. Tsirkin
parent 18f2971ce4
commit cc2a08480e
1 changed files with 5 additions and 0 deletions
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5
hw/i386/intel_iommu.c
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@ -756,6 +756,8 @@ static int vtd_get_pdire_from_pdir_table(dma_addr_t pasid_dir_base,
return -VTD_FR_PASID_TABLE_INV; return -VTD_FR_PASID_TABLE_INV;
} }
pdire->val = le64_to_cpu(pdire->val);
return 0; return 0;
} }
@ -780,6 +782,9 @@ static int vtd_get_pe_in_pasid_leaf_table(IntelIOMMUState *s,
pe, entry_size, MEMTXATTRS_UNSPECIFIED)) { pe, entry_size, MEMTXATTRS_UNSPECIFIED)) {
return -VTD_FR_PASID_TABLE_INV; return -VTD_FR_PASID_TABLE_INV;
} }
for (size_t i = 0; i < ARRAY_SIZE(pe->val); i++) {
pe->val[i] = le64_to_cpu(pe->val[i]);
}
/* Do translation type check */ /* Do translation type check */
if (!vtd_pe_type_check(x86_iommu, pe)) { if (!vtd_pe_type_check(x86_iommu, pe)) {