On Thu, 2013-10-17 at 16:31 +0200, Leif Lindholm wrote:

On Thu, Oct 17, 2013 at 03:07:39PM +0100, Matt Fleming wrote:

quoted

quoted

+/*
+ * If you need to (temporarily) support buggy firmware.
+ */
+#define KEEP_BOOT_SERVICES_REGIONS

Have you seen firmware that requires this? I'm just curious more than
anything else.

Not really.
I _think_ I saw it on a debug build of a development platform once.
That coincided with me seeing a post on linux-efi about some laptop
that broke unless boot services regions were preserved, so I decided
to put it in there for any future debugging.
 

I see a fairly consistent segfault when the arm64 kernel calls the
SetVirtualAddressMap function. It doesn't happen when the boot services
regions are included in the mapping. This is with edk2 firmware. I
haven't really dug into where it goes wrong.