---

yaml --- r: 262713 b: refs/heads/master c: 8aa6d35 h: refs/heads/master i: 262711: 03cd5da v: v3
git-mirror · Aug 5, 2011 · 1eb75a8 · 1eb75a8
1 parent b8b3be7
commit 1eb75a8
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Showing 3 changed files with 8 additions and 14 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b59a1bfcc2406ea75346977ad016cfe909a762ac
+refs/heads/master: 8aa6d359298ad284a202dc43f103e2f8100a6e82
diff --git a/trunk/arch/powerpc/include/asm/kdump.h b/trunk/arch/powerpc/include/asm/kdump.h
@@ -3,17 +3,7 @@
 
 #include <asm/page.h>
 
-/*
- * If CONFIG_RELOCATABLE is enabled we can place the kdump kernel anywhere.
- * To keep enough space in the RMO for the first stage kernel on 64bit, we
- * place it at 64MB. If CONFIG_RELOCATABLE is not enabled we must place
- * the second stage at 32MB.
- */
-#if defined(CONFIG_RELOCATABLE) && defined(CONFIG_PPC64)
-#define KDUMP_KERNELBASE	0x4000000
-#else
 #define KDUMP_KERNELBASE	0x2000000
-#endif
 
 /* How many bytes to reserve at zero for kdump. The reserve limit should
  * be greater or equal to the trampoline's end address.

diff --git a/trunk/arch/powerpc/kernel/machine_kexec.c b/trunk/arch/powerpc/kernel/machine_kexec.c
@@ -136,12 +136,16 @@ void __init reserve_crashkernel(void)
 	crashk_res.start = KDUMP_KERNELBASE;
 #else
 	if (!crashk_res.start) {
+#ifdef CONFIG_PPC64
 		/*
-		 * unspecified address, choose a region of specified size
-		 * can overlap with initrd (ignoring corruption when retained)
-		 * ppc64 requires kernel and some stacks to be in first segemnt
+		 * On 64bit we split the RMO in half but cap it at half of
+		 * a small SLB (128MB) since the crash kernel needs to place
+		 * itself and some stacks to be in the first segment.
 		 */
+		crashk_res.start = min(0x80000000ULL, (ppc64_rma_size / 2));
+#else
 		crashk_res.start = KDUMP_KERNELBASE;
+#endif
 	}
 
 	crash_base = PAGE_ALIGN(crashk_res.start);