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Commit e087edd8 authored by Pekka Enberg's avatar Pekka Enberg Committed by Ingo Molnar
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x86: make sure initmem is writable on 64-bit 



Impact: unification

This patch ports commit 3c1df68b ("x86: make
sure initmem is writable") to the 64-bit version to unify implementations of
free_init_pages().

Signed-off-by: default avatarPekka Enberg <penberg@cs.helsinki.fi>
Cc: Arjan van de Ven <arjan@linux.intel.com>
LKML-Reference: <1236078904.2675.17.camel@penberg-laptop>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 05f209e7

arch/x86/mm/init_64.c

+7 −0
Original line number Diff line number Diff line
@@ -962,6 +962,13 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end) 
		begin, PAGE_ALIGN(end));

	set_memory_np(begin, (end - begin) >> PAGE_SHIFT);

#else

	/*

	 * We just marked the kernel text read only above, now that

	 * we are going to free part of that, we need to make that

	 * writeable first.

	 */

	set_memory_rw(begin, (end - begin) >> PAGE_SHIFT);



	printk(KERN_INFO "Freeing %s: %luk freed\n", what, (end - begin) >> 10);



	for (; addr < end; addr += PAGE_SIZE) {