From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefano Stabellini Subject: [PATCH 08/11] xen/pt: mark all PCIe capability bits read-only Date: Tue, 2 Jun 2015 16:10:42 +0100 Message-ID: <1433257845-3690-8-git-send-email-stefano.stabellini@eu.citrix.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: qemu-devel@nongnu.org Cc: xen-devel@lists.xensource.com, Jan Beulich , Stefano.Stabellini@eu.citrix.com List-Id: xen-devel@lists.xenproject.org From: Jan Beulich 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 Reviewed-by: Stefano Stabellini --- 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