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Date: Fri, 9 Jun 2017 09:42:10 +0530 From: Hari Bathini <hbathini@...ux.vnet.ibm.com> To: Xunlei Pang <xlpang@...hat.com>, linux-kernel@...r.kernel.org, kexec@...ts.infradead.org Cc: linux-s390@...r.kernel.org, Baoquan He <bhe@...hat.com>, Gustavo Luiz Duarte <gustavold@...ux.vnet.ibm.com>, Dave Anderson <anderson@...hat.com>, Eric Biederman <ebiederm@...ssion.com>, akpm@...ux-foundation.org, Michael Holzheu <holzheu@...ux.vnet.ibm.com>, Dave Young <dyoung@...hat.com> Subject: Re: [PATCH] s390/crash: Fix KEXEC_NOTE_BYTES definition On Friday 09 June 2017 07:47 AM, Xunlei Pang wrote: > S390 KEXEC_NOTE_BYTES is not used by note_buf_t as before, which > is now defined as follows: > typedef u32 note_buf_t[CRASH_CORE_NOTE_BYTES/4]; > It was changed by the CONFIG_CRASH_CORE feature. > > This patch gets rid of all the old KEXEC_NOTE_BYTES stuff, and > renames KEXEC_NOTE_BYTES to CRASH_CORE_NOTE_BYTES for S390. > > Fixes: 692f66f26a4c ("crash: move crashkernel parsing and vmcore related code under CONFIG_CRASH_CORE") > Cc: Dave Young <dyoung@...hat.com> > Cc: Dave Anderson <anderson@...hat.com> > Cc: Hari Bathini <hbathini@...ux.vnet.ibm.com> > Cc: Gustavo Luiz Duarte <gustavold@...ux.vnet.ibm.com> > Signed-off-by: Xunlei Pang <xlpang@...hat.com> > --- > arch/s390/include/asm/kexec.h | 2 +- > include/linux/crash_core.h | 7 +++++++ > include/linux/kexec.h | 11 +---------- > 3 files changed, 9 insertions(+), 11 deletions(-) > > diff --git a/arch/s390/include/asm/kexec.h b/arch/s390/include/asm/kexec.h > index 2f924bc..352deb8 100644 > --- a/arch/s390/include/asm/kexec.h > +++ b/arch/s390/include/asm/kexec.h > @@ -47,7 +47,7 @@ > * Seven notes plus zero note at the end: prstatus, fpregset, timer, > * tod_cmp, tod_reg, control regs, and prefix > */ > -#define KEXEC_NOTE_BYTES \ > +#define CRASH_CORE_NOTE_BYTES \ > (ALIGN(sizeof(struct elf_note), 4) * 8 + \ > ALIGN(sizeof("CORE"), 4) * 7 + \ > ALIGN(sizeof(struct elf_prstatus), 4) + \ > diff --git a/include/linux/crash_core.h b/include/linux/crash_core.h > index e9de6b4..dbc6e5c 100644 > --- a/include/linux/crash_core.h > +++ b/include/linux/crash_core.h > @@ -10,9 +10,16 @@ > #define CRASH_CORE_NOTE_NAME_BYTES ALIGN(sizeof(CRASH_CORE_NOTE_NAME), 4) > #define CRASH_CORE_NOTE_DESC_BYTES ALIGN(sizeof(struct elf_prstatus), 4) > > +/* > + * The per-cpu notes area is a list of notes terminated by a "NULL" > + * note header. For kdump, the code in vmcore.c runs in the context > + * of the second kernel to combine them into one note. > + */ > +#ifndef CRASH_CORE_NOTE_BYTES > #define CRASH_CORE_NOTE_BYTES ((CRASH_CORE_NOTE_HEAD_BYTES * 2) + \ > CRASH_CORE_NOTE_NAME_BYTES + \ > CRASH_CORE_NOTE_DESC_BYTES) > +#endif > > #define VMCOREINFO_BYTES PAGE_SIZE > #define VMCOREINFO_NOTE_NAME "VMCOREINFO" > diff --git a/include/linux/kexec.h b/include/linux/kexec.h > index 3ea8275..133df03 100644 > --- a/include/linux/kexec.h > +++ b/include/linux/kexec.h > @@ -14,7 +14,6 @@ > > #if !defined(__ASSEMBLY__) > > -#include <linux/crash_core.h> > #include <asm/io.h> > > #include <uapi/linux/kexec.h> > @@ -25,6 +24,7 @@ > #include <linux/ioport.h> > #include <linux/module.h> > #include <asm/kexec.h> > +#include <linux/crash_core.h> > > /* Verify architecture specific macros are defined */ > > @@ -63,15 +63,6 @@ > #define KEXEC_CORE_NOTE_NAME CRASH_CORE_NOTE_NAME > > /* > - * The per-cpu notes area is a list of notes terminated by a "NULL" > - * note header. For kdump, the code in vmcore.c runs in the context > - * of the second kernel to combine them into one note. > - */ > -#ifndef KEXEC_NOTE_BYTES > -#define KEXEC_NOTE_BYTES CRASH_CORE_NOTE_BYTES > -#endif > - > -/* > * This structure is used to hold the arguments that are used when loading > * kernel binaries. > */ Looks good to me. Thanks for the fix.. - Hari
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