> -----Original Message----- > From: Vivek Goyal [mailto:vgoyal@xxxxxxxxxx] > Sent: 04 December 2013 21:30 > To: Qais Yousef > Cc: linux-kernel@xxxxxxxxxxxxxxx; Andrew Morton; Michael Holzheu; linux- > mips@xxxxxxxxxxxxxx; stable@xxxxxxxxxxxxxxx > Subject: Re: [PATCH] crash_dump: fix compilation error (on MIPS at least) > > On Wed, Dec 04, 2013 at 03:58:22PM +0000, Qais Yousef wrote: > > In file included from kernel/crash_dump.c:2:0: > > include/linux/crash_dump.h:22:27: error: unknown type name ‘pgprot_t’ > > > > when CONFIG_CRASH_DUMP=y > > > > The error was traced back to this commit: > > > > 9cb218131de1 vmcore: introduce remap_oldmem_pfn_range() > > > > include <asm/pgtable.h> to get the missing definition > > pgprot_t definition for mips seems to be in asm/page.h. So why are you including > asm/pgtable.h and not asm/page.h? For other architectures it seems to be in > other files. That means those arch will have broken compilation now. I didn't include asm/page.h because I didn't think it'll fix the problem for other arches. > > So question is, is there any arch specific file which one can include and be covered > for pgprot_t definition for all the arches. I asked the same question and asm/pgtable.h was the answer. Thanks, Qais > > Thanks > Vivek > > > > > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > > Cc: Michael Holzheu <holzheu@xxxxxxxxxxxxxxxxxx> > > Cc: Vivek Goyal <vgoyal@xxxxxxxxxx> > > Cc: <linux-mips@xxxxxxxxxxxxxx> > > Cc: <stable@xxxxxxxxxxxxxxx> # 3.12 > > Reviewed-by: James Hogan <james.hogan@xxxxxxxxxx> > > Signed-off-by: Qais Yousef <qais.yousef@xxxxxxxxxx> > > --- > > I haven't tried any other architecture except mips. > > If OK this should be considered for stable 3.12 (CCed). > > > > include/linux/crash_dump.h | 2 ++ > > 1 files changed, 2 insertions(+), 0 deletions(-) > > > > diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h > > index fe68a5a..7032518 100644 > > --- a/include/linux/crash_dump.h > > +++ b/include/linux/crash_dump.h > > @@ -6,6 +6,8 @@ > > #include <linux/proc_fs.h> > > #include <linux/elf.h> > > > > +#include <asm/pgtable.h> /* for pgprot_t */ > > + > > #define ELFCORE_ADDR_MAX (-1ULL) > > #define ELFCORE_ADDR_ERR (-2ULL) > > > > -- > > 1.7.1 > >
