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| author | Vivek Goyal <vgoyal@redhat.com> | 2014-08-08 14:26:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-08 15:57:33 -0700 |
| commit | dd5f726076cc7639d9713b334c8c133f77c6757a (patch) | |
| tree | 6b3e88bdf3e764d97eb88464e31abc097dab44f6 /arch/x86/purgatory | |
| parent | 27f48d3e633be23656a097baa3be336e04a82d84 (diff) | |
| download | linux-dd5f726076cc7639d9713b334c8c133f77c6757a.tar.gz linux-dd5f726076cc7639d9713b334c8c133f77c6757a.tar.bz2 linux-dd5f726076cc7639d9713b334c8c133f77c6757a.zip | |
kexec: support for kexec on panic using new system call
This patch adds support for loading a kexec on panic (kdump) kernel usning
new system call.
It prepares ELF headers for memory areas to be dumped and for saved cpu
registers. Also prepares the memory map for second kernel and limits its
boot to reserved areas only.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Greg Kroah-Hartman <greg@kroah.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: WANG Chao <chaowang@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/purgatory')
| -rw-r--r-- | arch/x86/purgatory/entry64.S | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/purgatory/entry64.S b/arch/x86/purgatory/entry64.S index be3249d7ed2d..d1a4291d3568 100644 --- a/arch/x86/purgatory/entry64.S +++ b/arch/x86/purgatory/entry64.S @@ -61,13 +61,13 @@ new_cs_exit: .balign 4 entry64_regs: rax: .quad 0x0 -rbx: .quad 0x0 rcx: .quad 0x0 rdx: .quad 0x0 -rsi: .quad 0x0 -rdi: .quad 0x0 +rbx: .quad 0x0 rsp: .quad 0x0 rbp: .quad 0x0 +rsi: .quad 0x0 +rdi: .quad 0x0 r8: .quad 0x0 r9: .quad 0x0 r10: .quad 0x0 |