Messages in this thread | | | From | Geert Uytterhoeven <> | Date | Wed, 15 Jul 2020 20:21:27 +0200 | Subject | Re: ioremap and dma cleanups and fixes for superh (2nd resend) |
| |
On Wed, Jul 15, 2020 at 6:18 PM John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> wrote: > On 7/15/20 4:37 PM, John Paul Adrian Glaubitz wrote: > > Okay, kernel 5.0.0 does not suffer from this bug. So I should be able to bisect > > this particular issue. > > > > I'm glad I don't have to start bisecting with earlier kernels because these > > won't build easily with my current toolchain based on gcc-9. > > > > Will report once I found the bad commit that introduced the problem. > > Found the culprit: > > c5b27a889da92f4a969d61df77bd4f79ffce57c9 is the first bad commit > commit c5b27a889da92f4a969d61df77bd4f79ffce57c9 > Author: Peter Zijlstra <peterz@infradead.org> > Date: Tue Sep 4 14:45:04 2018 +0200 > > sh/tlb: Convert SH to generic mmu_gather > > Generic mmu_gather provides everything SH needs (range tracking and > cache coherency). > > No change in behavior intended. > > Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Andy Lutomirski <luto@kernel.org> > Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> > Cc: Borislav Petkov <bp@alien8.de> > Cc: Dave Hansen <dave.hansen@linux.intel.com> > Cc: H. Peter Anvin <hpa@zytor.com> > Cc: Linus Torvalds <torvalds@linux-foundation.org> > Cc: Nick Piggin <npiggin@gmail.com> > Cc: Peter Zijlstra <peterz@infradead.org> > Cc: Rich Felker <dalias@libc.org> > Cc: Rik van Riel <riel@surriel.com> > Cc: Thomas Gleixner <tglx@linutronix.de> > Cc: Will Deacon <will.deacon@arm.com> > Cc: Yoshinori Sato <ysato@users.sourceforge.jp> > Signed-off-by: Ingo Molnar <mingo@kernel.org> > > arch/sh/include/asm/pgalloc.h | 9 +++ > arch/sh/include/asm/tlb.h | 130 +----------------------------------------- > 2 files changed, 10 insertions(+), 129 deletions(-) > > CC'ing the author (Peter Zijlstra <peterz@infradead.org>).
Oh, we actually discussed that: https://lore.kernel.org/linux-mm/20191204133454.GW2844@hirez.programming.kicks-ass.net/ but there was no conclusion...
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
| |