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authorPrem Mallappa <prem.mallappa@gmail.com>2013-08-30 15:35:10 +0530
committerRalf Baechle <ralf@linux-mips.org>2013-09-05 20:53:37 +0200
commit273463b78237b53936a61046bfb4c8e55150ca24 (patch)
treed76ddceaeb9f2377dc504e451aed34e31c5463fb /arch
parent8533966a6dba09d65a6764accdf44f3e96cddbfb (diff)
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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>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/kernel/relocate_kernel.S6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/mips/kernel/relocate_kernel.S b/arch/mips/kernel/relocate_kernel.S
index 43d2d78d3287..74bab9ddd0e1 100644
--- a/arch/mips/kernel/relocate_kernel.S
+++ b/arch/mips/kernel/relocate_kernel.S
@@ -26,6 +26,12 @@ process_entry:
PTR_L s2, (s0)
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 */
and s3, s2, 0x1
beq s3, zero, 1f