Commit 273463b7 authored Aug 30, 2013 by Prem Mallappa Committed by Ralf Baechle Sep 05, 2013

MIPS: kdump: Skip walking indirection page for crashkernels



KDUMP: skip indirection page, as crashkernel has already copied to destination

[ralf@linux-mips.org: cosmetic changes.]

Signed-off-by: Prem Mallappa <pmallappa@caviumnetworks.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/5786/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent 8533966a

arch/mips/kernel/relocate_kernel.S

+6 −0

Original line number	Original line	Diff line number	Diff line
	@@ -26,6 +26,12 @@ process_entry:
	PTR_L s2, (s0)		PTR_L s2, (s0)
	PTR_ADD s0, s0, SZREG		PTR_ADD s0, s0, SZREG

			/*
			* In case of a kdump/crash kernel, the indirection page is not
			* populated as the kernel is directly copied to a reserved location
			*/
			beqz s2, done

	/* destination page */		/* destination page */
	and s3, s2, 0x1		and s3, s2, 0x1
	beq s3, zero, 1f		beq s3, zero, 1f