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virDomainMemoryDefValidate: Fix VIRTIO_MEM alignment check

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Inside of virDomainMemoryDefValidate() there's a check that
address where a virtio-mem memory device is mapped to is a
multiple of its block size. But this check is off by a couple of
bits, because the memory address is in bytes while the block size
is in kibibytes. Therefore, when checking whether address is a
multiple of the block size, the latter has to be multiplied by a
factor of 1024.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Michal Privoznik 2023-09-22 10:45:50 +02:00
parent d54b70a7e4
commit a1d6e18f00
1 changed files with 2 additions and 1 deletions
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3
src/conf/domain_validate.c
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@ -2341,7 +2341,8 @@ virDomainMemoryDefValidate(const virDomainMemoryDef *mem,
return -1;
}
if (mem->target.virtio_mem.address % mem->target.virtio_mem.blocksize != 0) {
/* blocksize is stored in KiB while address is in bytes */
if (mem->target.virtio_mem.address % (mem->target.virtio_mem.blocksize * 1024) != 0) {
virReportError(VIR_ERR_XML_DETAIL, "%s",
_("memory device address must be aligned to blocksize"));
return -1;