Re: [Patch 0/2] Exclude hwpoison page from vmcore dump (2012/11/01 19:40), Eric W. Biederman wrote: > Mitsuhiro Tanino <mitsuhiro.tanino.gm at hitachi.com> writes: > I agree. If we are performing filtering filtering out of poisoned pages > seems very reasonable. So ack on the basic concept. > > Eric Hello, Eric, Could you please push the patch to export PG_hwpoison flag into 3.9 during next merge window? Kumagai-san acked the patch which provides the feature to exclude hwpoison page and he will push the fix of makedumpfile side into makedumpfile-1.5.2. This kernel patch is also required to enable this feature. Regards, Mitsuhiro Tanino (2013/02/08 17:49), Atsushi Kumagai wrote: > Hello, > > On Wed, 31 Oct 2012 23:05:05 +0900 > Mitsuhiro Tanino <mitsuhiro.tanino.gm at hitachi.com> wrote: > >> This patch exports a PG_hwpoison into vmcoreinfo when >> CONFIG_MEMORY_FAILURE is defined. >> "makedumpfile" needs to read information of memory, such as >> 'mem_section', 'zone', 'pageflags' from vmcore. >> >> We introduce a function into "makedumpfile" to exclude >> hwpoison page from vmcore dump. >> In order to introduce this function, PG_hwpoison flag have >> to export into vmcoreinfo. >> >> Signed-off-by: Mitsuhiro Tanino <mitsuhiro.tanino.gm at hitachi.com> > > I'm curious to know the status of this patch because I'll release > makedumpfile-1.5.2 with the feature to exclude hwpoison page soon. > > > Thanks > Atsushi Kumagai > >> --- >> kernel/kexec.c | 3 +++ >> 1 file changed, 3 insertions(+) >> >> diff --git a/kernel/kexec.c b/kernel/kexec.c >> index 0668d58..0d5d6bc 100644 >> --- a/kernel/kexec.c >> +++ b/kernel/kexec.c >> @@ -1513,6 +1513,9 @@ static int __init crash_save_vmcoreinfo_init(void) >> VMCOREINFO_NUMBER(PG_lru); >> VMCOREINFO_NUMBER(PG_private); >> VMCOREINFO_NUMBER(PG_swapcache); >> +#ifdef CONFIG_MEMORY_FAILURE >> + VMCOREINFO_NUMBER(PG_hwpoison); >> +#endif >> >> arch_crash_save_vmcoreinfo(); >> update_vmcoreinfo_note(); >> -- >> 1.7.10.1 >> >> _______________________________________________ >> kexec mailing list >> kexec at lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/kexec > > _______________________________________________ > kexec mailing list > kexec at lists.infradead.org > http://lists.infradead.org/mailman/listinfo/kexec > . >
