Commit ecd94c08 authored Mar 04, 2008 by Alexander van Heukelum Committed by Ingo Molnar Apr 17, 2008

x86: reserve end-of-conventional-memory to 1MB, 64-bit, use paravirt_enabled



Jeremy Fitzhardinge pointed out that looking at the boot_params
struct to determine if the system is running in a paravirtual
environment is not reliable for the Xen case, currently. He also
points out that there already exists a function to determine if
the system is running in a paravirtual environment. So let's use
that instead. This gets rid of the preprocessor test too.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 2fde61fd

arch/x86/kernel/head64.c

+1 −5

Original line number	Diff line number	Diff line
		@@ -72,12 +72,8 @@ static void __init reserve_ebda_region(void)
		/* that area is absent. We'll just have to assume */
		/* that the paravirt case can handle memory setup */
		/* correctly, without our help. */
		#ifdef CONFIG_PARAVIRT
		if ((boot_params.hdr.version >= 0x207) &&
		(boot_params.hdr.hardware_subarch != 0)) {
		if (paravirt_enabled())
		return;
		}
		#endif

		/* end of low (conventional) memory */
		lowmem = (unsigned short )__va(BIOS_LOWMEM_KILOBYTES);

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