Date: Thu, 17 Mar 2016 09:49:11 +0100 From: Heiko Carstens <heiko.carstens@...ibm.com> To: Christian Borntraeger <borntraeger@...ibm.com> Cc: Kees Cook <keescook@...omium.org>, Martin Schwidefsky <schwidefsky@...ibm.com>, linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org, kernel-hardening@...ts.openwall.com, Ingo Molnar <mingo@...nel.org> Subject: Re: [PATCH] s390: disable postinit-readonly for now On Wed, Mar 16, 2016 at 08:47:44PM +0100, Christian Borntraeger wrote: > On 03/10/2016 06:31 PM, Kees Cook wrote: > > This is a temporary fix to let lkdtm run again on s390, though it'll > > still fail the ro_after_init tests. Until rodata and ro_after_init > > sections can be split on s390, disable special handling of ro_after_init. > > > > Signed-off-by: Kees Cook <keescook@...omium.org> > > --- > > for -next ... > > Given that the other patches are already merged in linus master via Ingo, > do you want this to go via Ingo as well? Let's route this via the s390 tree. I will add another patch to get rid of the bogus "This architecture does not have kernel memory protection." message printed to the console, just like parisc. > > --- > > arch/s390/include/asm/cache.h | 3 +++ > > 1 file changed, 3 insertions(+) > > > > diff --git a/arch/s390/include/asm/cache.h b/arch/s390/include/asm/cache.h > > index 4d7ccac5fd1d..22da3b34c655 100644 > > --- a/arch/s390/include/asm/cache.h > > +++ b/arch/s390/include/asm/cache.h > > @@ -15,4 +15,7 @@ > > > > #define __read_mostly __attribute__((__section__(".data..read_mostly"))) > > > > +/* Read-only memory is marked before mark_rodata_ro() is called. */ > > +#define __ro_after_init __read_mostly > > +
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