From 9fa54a8818979ce375fa830402b5897996bbcc1a Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Wed, 10 Jun 2015 14:14:25 +0100 Subject: [PATCH] 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 Reviewed-by: Stefano Stabellini --- hw/pass-through.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/pass-through.c b/hw/pass-through.c index 9ec921140..67c0fd07a 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, -- 2.39.5