linux-kernel - [PATCH v1] MIPS:KDUMP: set a right value to kexec_indirection

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Date:	Thu, 31 Jul 2014 19:42:29 +0800
From:	<Wei.Yang@...driver.com>
To:	<ralf@...ux-mips.org>
CC:	<Wei.Yang@...driver.com>, <linux-mips@...ux-mips.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH v1] MIPS:KDUMP: set a right value to kexec_indirection_page variable

From: Yang Wei <Wei.Yang@...driver.com>

Since there is not indirection page in crash type, so the vaule of the head
field of kimage structure is not equal to the address of indirection page but
IND_DONE. so we have to set kexec_indirection_page variable to the address of
the head field of image structure.

Signed-off-by: Yang Wei <Wei.Yang@...driver.com>

          Hi Ralf,

		  Please help me take a look at this patch, I have already verified it on Cavium 6100EVB board.

		  Thanks
		  Wei
---
 arch/mips/kernel/machine_kexec.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/mips/kernel/machine_kexec.c b/arch/mips/kernel/machine_kexec.c
index 992e184..531b70d 100644
--- a/arch/mips/kernel/machine_kexec.c
+++ b/arch/mips/kernel/machine_kexec.c
@@ -71,8 +71,13 @@ machine_kexec(struct kimage *image)
 	kexec_start_address =
 		(unsigned long) phys_to_virt(image->start);
 
-	kexec_indirection_page =
-		(unsigned long) phys_to_virt(image->head & PAGE_MASK);
+	if (image->type == KEXEC_TYPE_DEFAULT) {
+		kexec_indirection_page =
+			(unsigned long) phys_to_virt(image->head & PAGE_MASK);
+	} else {
+		kexec_indirection_page = (unsigned long)&image->head;
+	}
+	
 
 	memcpy((void*)reboot_code_buffer, relocate_new_kernel,
 	       relocate_new_kernel_size);
-- 
1.7.9.5

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