From: Jan Beulich <jbeul...@suse.com>
xen_pt_emu_reg_pcie[]'s PCI_EXP_DEVCAP needs to cover all bits as read-
only to avoid unintended write-back (just a precaution, the field ought
to be read-only in hardware).
This is a preparatory patch for XSA-131.
Signed-off-by: Jan Beulich <jbeul...@suse.com>
Reviewed-by: Stefano Stabellini <stefano.stabell...@eu.citrix.com>
---
hw/xen/xen_pt_config_init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c
index 3833b9e..9f6c00e 100644
--- a/hw/xen/xen_pt_config_init.c
+++ b/hw/xen/xen_pt_config_init.c
@@ -871,7 +871,7 @@ static XenPTRegInfo xen_pt_emu_reg_pcie[] = {
.offset = PCI_EXP_DEVCAP,
.size = 4,
.init_val = 0x00000000,
- .ro_mask = 0x1FFCFFFF,
+ .ro_mask = 0xFFFFFFFF,
.emu_mask = 0x10000000,
.init = xen_pt_common_reg_init,
.u.dw.read = xen_pt_long_reg_read,
--
1.7.10.4
