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vfio-user: handle PCI BAR accesses

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Determine the BARs used by the PCI device and register handlers to
manage the access to the same.

Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 3373e10b5be5f42846f0632d4382466e1698c505.1655151679.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Jagannathan Raman 2022-06-13 16:26:32 -04:00 • committed by Stefan Hajnoczi
parent 15ccf9bee7
commit 3123f93d6b
5 changed files with 203 additions and 6 deletions
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9
tests/qtest/fuzz/generic_fuzz.c
View file

@ -144,7 +144,7 @@ static void *pattern_alloc(pattern p, size_t len)
return buf;
}
static int memory_access_size(MemoryRegion *mr, unsigned l, hwaddr addr)
static int fuzz_memory_access_size(MemoryRegion *mr, unsigned l, hwaddr addr)
{
unsigned access_size_max = mr->ops->valid.max_access_size;
@ -242,11 +242,12 @@ void fuzz_dma_read_cb(size_t addr, size_t len, MemoryRegion *mr)
/*
* If mr1 isn't RAM, address_space_translate doesn't update l. Use
* memory_access_size to identify the number of bytes that it is safe
* to write without accidentally writing to another MemoryRegion.
* fuzz_memory_access_size to identify the number of bytes that it
* is safe to write without accidentally writing to another
* MemoryRegion.
*/
if (!memory_region_is_ram(mr1)) {
l = memory_access_size(mr1, l, addr1);
l = fuzz_memory_access_size(mr1, l, addr1);
}
if (memory_region_is_ram(mr1) ||
memory_region_is_romd(mr1) ||