diff options
| author | Avi Kivity <avi@redhat.com> | 2012-01-04 16:28:42 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2012-04-15 12:17:23 +0300 |
| commit | cdde6ffc27517bdf069734fbc5693ce2b14edc75 (patch) | |
| tree | 8c1c0eaeb7db49bf60e491bdbd19adab7136f66c /hw | |
| parent | 54bfa546a0b5af335128ef5c477f8af9834df498 (diff) | |
| download | hqemu-cdde6ffc27517bdf069734fbc5693ce2b14edc75.zip hqemu-cdde6ffc27517bdf069734fbc5693ce2b14edc75.tar.gz | |
pci: fix corrupted pci conf index register by unaligned write
Commit d0ed8076cbdc261 converted the PCI config access to the memory
API, but also inadvertantly changed it to accept unaligned writes,
and corrupt the index register in the process. This causes a regression
booting NetBSD.
Fix by ignoring unaligned or non-dword writes.
https://bugs.launchpad.net/qemu/+bug/897771
Reported-by: Andreas Gustafsson <gson@gson.org>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/pci_host.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/pci_host.c b/hw/pci_host.c index 44c6c20..8041778 100644 --- a/hw/pci_host.c +++ b/hw/pci_host.c @@ -101,6 +101,9 @@ static void pci_host_config_write(void *opaque, target_phys_addr_t addr, PCI_DPRINTF("%s addr " TARGET_FMT_plx " len %d val %"PRIx64"\n", __func__, addr, len, val); + if (addr != 0 || len != 4) { + return; + } s->config_reg = val; } |
