From: Keir Fraser <keir.fraser@citrix.com>
Date: Thu, 21 Jan 2010 11:26:26 +0000 (+0000)
Subject: VT-d: warn on bogus RMRR entry
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~12707
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/success//%22http:/www.example.com/cgi/success/?a=commitdiff_plain;h=92181f18298ff8c415354150414efb7195c1b620;p=xen.git

VT-d: warn on bogus RMRR entry

Signed-off-by: Weidong Han <weidong.han@intel.com>
---

diff --git a/xen/drivers/passthrough/vtd/dmar.c b/xen/drivers/passthrough/vtd/dmar.c
index 971100fe3e..9ae39a4cf9 100644
--- a/xen/drivers/passthrough/vtd/dmar.c
+++ b/xen/drivers/passthrough/vtd/dmar.c
@@ -453,7 +453,13 @@ acpi_parse_one_rmrr(struct acpi_dmar_entry_header *header)
             f = PCI_FUNC(rmrru->scope.devices[i]);
 
             if ( pci_device_detect(b, d, f) == 0 )
+            {
+                dprintk(XENLOG_WARNING VTDPREFIX,
+                    "  Non-existent device (%x:%x.%x) is reported "
+                    "in RMRR (%"PRIx64", %"PRIx64")'s scope!\n",
+                    b, d, f, rmrru->base_address, rmrru->end_address);
                 ignore = 1;
+            }
             else
             {
                 ignore = 0;