[Xen-changelog] [qemu-upstream-unstable] xen/pt: mark all PCIe capability bits read-only

[patchbot@xxxxxxx]

commit 16c1631e63a22e80dfc0d288a2115dad4a848370
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Tue Jun 2 15:43:08 2015 +0000
Commit:     Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
CommitDate: Tue Jun 9 10:28:54 2015 +0000

    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: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
---
 hw/xen/xen_pt_config_init.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c
index 1a18dbb..dd14f90 100644
--- a/hw/xen/xen_pt_config_init.c
+++ b/hw/xen/xen_pt_config_init.c
@@ -873,7 +873,7 @@ 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,
--
generated by git-patchbot for /home/xen/git/qemu-upstream-unstable.git

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