x86: make sure initmem is writable on 64-bit (e087edd8) · Commits · 戴 / test

Impact: unification This patch ports commit ("x86: make sure initmem is writable") to the 64-bit version to unify implementations of free_init_pages(). Signed-off-by:

Pekka 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:

Ingo Molnar <mingo@elte.hu>

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) {

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