Deactivate BARs before reactivating them to avoid breakage.
Some firmware components do not check whether the COMMAND
register contains any values before writing BARs which leads
to kvmtool errors during subsequent BAR deactivation
Signed-off-by: Sergey Temerkhanov <s.temerkhanov@xxxxxxxxx>
---
pci.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/pci.c b/pci.c
index 2e2c027..515d9dc 100644
--- a/pci.c
+++ b/pci.c
@@ -320,10 +320,6 @@ static void pci_config_bar_wr(struct kvm *kvm,
*/
if (value == 0xffffffff) {
value = ~(pci__bar_size(pci_hdr, bar_num) - 1);
- /* Preserve the special bits. */
- value = (value & mask) | (pci_hdr->bar[bar_num] & ~mask);
- pci_hdr->bar[bar_num] = value;
- return;
}
value = (value & mask) | (pci_hdr->bar[bar_num] & ~mask);
--
2.25.1
