Signed-off-by: Wei Liu <wei.l...@citrix.com>
Cc: Jan Beulich <jbeul...@suse.com>
Cc: George Dunlap <george.dun...@eu.citrix.com>
---
tools/firmware/hvmloader/pci.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/tools/firmware/hvmloader/pci.c b/tools/firmware/hvmloader/pci.c
index 4e8d803..d7ea740 100644
--- a/tools/firmware/hvmloader/pci.c
+++ b/tools/firmware/hvmloader/pci.c
@@ -88,6 +88,19 @@ void pci_setup(void)
printf("Relocating guest memory for lowmem MMIO space %s\n",
allow_memory_relocate?"enabled":"disabled");
+ /* Disallow low memory relocation when vNUMA is enabled, because
+ * relocated memory ends up off node. Further more, even if we
+ * dynamically expand node coverage in hvmloader, low memory and
+ * high memory may reside in different physical nodes, blindly
+ * relocates low memory to high memory gives us a sub-optimal
+ * configuration.
+ */
+ if ( hvm_info->nr_nodes != 0 && allow_memory_relocate )
+ {
+ allow_memory_relocate = false;
+ printf("vNUMA enabled, relocating guest memory for lowmem MMIO space
disabled\n");
+ }
+
s = xenstore_read("platform/mmio_hole_size", NULL);
if ( s )
mmio_hole_size = strtoll(s, NULL, 0);
--
1.7.10.4
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