[patch 04/10] x86: use BOOTMEM_EXCLUSIVE on 32-bit

Greg KH
2008-06-23T23:10:47Z

[-- Attachment #1: x86-use-bootmem_exclusive-on-32-bit.patch --]
[-- Type: text/plain, Size: 1429 bytes --]

2.6.25.9-stable review patch. If anyone has any objections, please let
us know.

------------------
From: Bernhard Walle <bwalle@suse.de>

commit d3942cff620bea073fc4e3c8ed878eb1e84615ce upstream

This patch uses the BOOTMEM_EXCLUSIVE for crashkernel reservation also for
i386 and prints a error message on failure.

The patch is still for 2.6.26 since it is only bug fixing. The unification
of reserve_crashkernel() between i386 and x86_64 should be done for 2.6.27.

Signed-off-by: Bernhard Walle <bwalle@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
arch/x86/kernel/setup_32.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -483,10 +483,16 @@ static void __init reserve_crashkernel(v
(unsigned long)(crash_size >> 20),
(unsigned long)(crash_base >> 20),
(unsigned long)(total_mem >> 20));
+
+ if (reserve_bootmem(crash_base, crash_size,
+ BOOTMEM_EXCLUSIVE) < 0) {
+ printk(KERN_INFO "crashkernel reservation "
+ "failed - memory is in use\n");
+ return;
+ }
+
crashk_res.start = crash_base;
crashk_res.end = crash_base + crash_size - 1;
- reserve_bootmem(crash_base, crash_size,
- BOOTMEM_DEFAULT);
} else
printk(KERN_INFO "crashkernel reservation failed - "
"you have to specify a base address\n");

--