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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>
This commit is contained in:
Prem Mallappa 2013-08-30 15:35:10 +05:30 committed by Ralf Baechle
parent 8533966a6d
commit 273463b782
1 changed files with 6 additions and 0 deletions
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6
arch/mips/kernel/relocate_kernel.S
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@ -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