Commit 45ebe391 authored by Jan Beulich's avatar Jan Beulich Committed by Stefano Stabellini
Browse files

xen/pt: mark all PCIe capability bits read-only 



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: default avatarJan Beulich <jbeulich@suse.com>
Reviewed-by: default avatarStefano Stabellini <stefano.stabellini@eu.citrix.com>
parent 0e7ef221

hw/xen/xen_pt_config_init.c

+1 −1
Original line number Diff line number Diff line
@@ -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,