34 lines
1.1 KiB
Diff
34 lines
1.1 KiB
Diff
From 45ebe3916ab16f859ed930e92fbd52d84d5dcdaf Mon Sep 17 00:00:00 2001
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From: Jan Beulich <jbeulich@suse.com>
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Date: Tue, 2 Jun 2015 15:07:01 +0000
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Subject: [PATCH] xen/pt: mark all PCIe capability bits read-only
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xen_pt_emu_reg_pcie[]'s PCI_EXP_DEVCAP needs to cover all bits as read-
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only to avoid unintended write-back (just a precaution, the field ought
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to be read-only in hardware).
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This is a preparatory patch for XSA-131.
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Signed-off-by: Jan Beulich <jbeulich@suse.com>
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Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
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---
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hw/xen/xen_pt_config_init.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c
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index 3833b9e..9f6c00e 100644
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--- a/hw/xen/xen_pt_config_init.c
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+++ b/hw/xen/xen_pt_config_init.c
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@@ -871,7 +871,7 @@ static XenPTRegInfo xen_pt_emu_reg_pcie[] = {
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.offset = PCI_EXP_DEVCAP,
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.size = 4,
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.init_val = 0x00000000,
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- .ro_mask = 0x1FFCFFFF,
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+ .ro_mask = 0xFFFFFFFF,
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.emu_mask = 0x10000000,
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.init = xen_pt_common_reg_init,
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.u.dw.read = xen_pt_long_reg_read,
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--
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2.2.1
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