From: Amul Shah Date: Sun, 25 Jun 2006 12:49:31 +0000 (-0700) Subject: [PATCH] Fix kdump Crash Kernel boot memory reservation for NUMA machines X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=00212fef814612245ed0261cbac8426d0c9a31a5;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git [PATCH] Fix kdump Crash Kernel boot memory reservation for NUMA machines This patch will fix a boot memory reservation bug that trashes memory on the ES7000 when loading the kdump crash kernel. The code in arch/x86_64/kernel/setup.c to reserve boot memory for the crash kernel uses the non-numa aware "reserve_bootmem" function instead of the NUMA aware "reserve_bootmem_generic". I checked to make sure that no other function was using "reserve_bootmem" and found none, except the ones that had NUMA ifdef'ed out. I have tested this patch only on an ES7000 with NUMA on and off (numa=off) in a single (non-NUMA) and multi-cell (NUMA) configurations. Signed-off-by: Amul Shah Looks-good-to: Vivek Goyal Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c index b8d5116d7371..fdb82658b1a1 100644 --- a/arch/x86_64/kernel/setup.c +++ b/arch/x86_64/kernel/setup.c @@ -823,7 +823,7 @@ void __init setup_arch(char **cmdline_p) #endif #ifdef CONFIG_KEXEC if (crashk_res.start != crashk_res.end) { - reserve_bootmem(crashk_res.start, + reserve_bootmem_generic(crashk_res.start, crashk_res.end - crashk_res.start + 1); } #endif