[Xen-changelog] [qemu-xen-4.4-testing] xen/pt: mark all PCIe capability bits read-only

[patchbot@xxxxxxx]

commit 65e39c802e62d2427f5c3df2c597e0c3780d50f0
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Wed Jun 10 14:12:16 2015 +0100
Commit:     Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
CommitDate: Wed Jun 10 14:12:16 2015 +0100

    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/pass-through.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/hw/pass-through.c b/hw/pass-through.c
index 9ec9211..67c0fd0 100644
--- a/hw/pass-through.c
+++ b/hw/pass-through.c
@@ -577,7 +577,7 @@ static struct pt_reg_info_tbl pt_emu_reg_pcie_tbl[] = {
         .offset     = PCI_EXP_DEVCAP,
         .size       = 4,
         .init_val   = 0x00000000,
-        .ro_mask    = 0x1FFCFFFF,
+        .ro_mask    = 0xFFFFFFFF,
         .emu_mask   = 0x10000000,
         .init       = pt_common_reg_init,
         .u.dw.read  = pt_long_reg_read,
--
generated by git-patchbot for /home/xen/git/qemu-xen-4.4-testing.git

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