This implies there's no need to forcefully reserve the VGA MMIO
region, since the memory map provided will be correct.
Reported-by: Andrew Cooper <andrew.coop...@citrix.com>
Signed-off-by: Roger Pau Monné <roger....@cirix.com>
---
Cc: Jan Beulich <jbeul...@suse.com>
Cc: Andrew Cooper <andrew.coop...@citrix.com>
Cc: Wei Liu <wei.l...@citrix.com>
---
Changes since v1:
- Assume the memory map is always correct when booted as a guest
under any hypervisor, not only Xen.
---
xen/arch/x86/e820.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/xen/arch/x86/e820.c b/xen/arch/x86/e820.c
index 5b63667087..2407367c57 100644
--- a/xen/arch/x86/e820.c
+++ b/xen/arch/x86/e820.c
@@ -537,11 +537,12 @@ static void __init machine_specific_memory_setup(struct
e820map *raw)
reserve_dmi_region();
- /*
- * Some BIOSes claim RAM in the 640k - 1M region.
- * Not right. Fix it up.
- */
- reserve_vga_region();
+ if ( !cpu_has_hypervisor )
+ /*
+ * Some BIOSes claim RAM in the 640k - 1M region.
+ * Not right. Fix it up.
+ */
+ reserve_vga_region();
top_of_ram = mtrr_top_of_ram();
if ( top_of_ram )
--
2.17.2 (Apple Git-113)
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel
