From: khilman@kernel•org (Kevin Hilman)
To: linux-arm-kernel@lists•infradead.org
Subject: Possible regression in next-20150323 due to "ARM, arm64: kvm: get rid of the bounce page"
Date: Tue, 31 Mar 2015 15:10:33 -0700 [thread overview]
Message-ID: <7h8uec95t2.fsf@deeprootsystems.com> (raw)
In-Reply-To: <CAKv+Gu_ZHZFm-1eXn+r7fkEHOxqSmj+Q+Mmy7k6LK531vSfAjQ@mail.gmail.com> (Ard Biesheuvel's message of "Tue, 31 Mar 2015 23:39:47 +0200")
Hi Ard,
Ard Biesheuvel <ard.biesheuvel@linaro•org> writes:
[...]
> I think Will and I were both under the impression that this patch
>
> https://git.kernel.org/cgit/linux/kernel/git/arm64/linux.git/log/?h=kvm-bounce-page
>
> fixed the issue conclusively.
Nope, that branch is already part of linux-next, and linux-next still
fails to compile for 20+ defconfigs[1]
> Could you elaborate on the issue please? What is the error you are
> getting, and can you confirm that is is caused by ld choking on the
> linker script? If not, this is another error than the one we have been
> trying to fix
It's definitely not linker script related.
Using "arm-linux-gnueabi-gcc (Ubuntu/Linaro 4.7.3-12ubuntu1) 4.7.3",
here's the error when building for multi_v7_defconfig (full log
available[2]):
../mm/migrate.c: In function 'migrate_pages':
../mm/migrate.c:1148:1: internal compiler error: in push_minipool_fix, at config/arm/arm.c:13101
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.7/README.Bugs> for instructions.
Preprocessed source stored into /tmp/ccO1Nz1m.out file, please attach
this to your bugreport.
make[2]: *** [mm/migrate.o] Error 1
make[2]: Target `__build' not remade because of errors.
make[1]: *** [mm] Error 2
build bisect points to commit 21f992084aeb[3], but that doesn't revert
cleanly so I haven't got any further than that yet.
Kevin
[1] http://kernelci.org/build/next/kernel/next-20150331/
[2] http://storage.kernelci.org/next/next-20150331/arm-multi_v7_defconfig/build.log
[3] 21f992084aeb777675ba5f9c2dc6663e8a06e467 is the first bad commit
Author: Kirill A. Shutemov <kirill.shutemov@linux•intel.com>
Date: Wed Mar 25 13:02:28 2015 +1100
page-flags: define behavior of FS/IO-related flags on compound pages
It seems we don't have compound page on FS/IO path currently. Use
NO_COMPOUND to catch if we have.
The odd exception is PG_dirty: sound uses compound pages and maps
them
with PTEs. NO_COMPOUND triggers VM_BUG_ON() in set_page_dirty() on
handling shared fault. Let's use HEAD for PG_dirty.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux•intel.com>
Cc: Andrea Arcangeli <aarcange@redhat•com>
Cc: Hugh Dickins <hughd@google•com>
Cc: Dave Hansen <dave.hansen@intel•com>
Cc: Mel Gorman <mgorman@suse•de>
Cc: Rik van Riel <riel@redhat•com>
Cc: Vlastimil Babka <vbabka@suse•cz>
Cc: Christoph Lameter <cl@linux•com>
Cc: Naoya Horiguchi <n-horiguchi@ah•jp.nec.com>
Cc: Steve Capper <steve.capper@linaro•org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux•vnet.ibm.com>
Cc: Johannes Weiner <hannes@cmpxchg•org>
Cc: Michal Hocko <mhocko@suse•cz>
Cc: Jerome Marchand <jmarchan@redhat•com>
Signed-off-by: Andrew Morton <akpm@linux-foundation•org>
:040000 040000 0d621460af1123de8fc33c881ae314c914725afc
b843f45fb2a1c2537e8c17946d3f8af512cab84d M include
bisect run success
next prev parent reply other threads:[~2015-03-31 22:10 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-24 0:45 Possible regression in next-20150323 due to "ARM, arm64: kvm: get rid of the bounce page" Simon Horman
2015-03-24 0:52 ` Tyler Baker
2015-03-24 0:53 ` Tyler Baker
2015-03-24 8:31 ` Ard Biesheuvel
2015-03-24 16:13 ` Nishanth Menon
2015-03-26 0:39 ` Simon Horman
2015-03-26 13:36 ` Will Deacon
2015-03-26 15:29 ` Tyler Baker
2015-03-27 0:25 ` Simon Horman
2015-03-27 10:06 ` Will Deacon
2015-03-27 11:55 ` Simon Horman
2015-03-27 15:18 ` Tyler Baker
2015-03-31 18:58 ` Kevin Hilman
2015-03-31 21:39 ` Ard Biesheuvel
2015-03-31 22:10 ` Kevin Hilman [this message]
2015-04-01 9:37 ` [PATCH] mm/migrate: Mark unmap_and_move() "noinline" to avoid ICE in gcc 4.7.3 (was: Re: Possible regression in gcc 4.7.3 next-20150323 due to "ARM, arm64: kvm: get rid of the bounce page") Geert Uytterhoeven
2015-04-01 9:47 ` [PATCH] mm/migrate: Mark unmap_and_move() "noinline" to avoid ICE in gcc 4.7.3 Marc Zyngier
2015-04-01 19:40 ` Andrew Morton
2015-04-01 21:54 ` Kevin Hilman
2015-04-01 21:59 ` Russell King - ARM Linux
2015-04-02 7:17 ` Geert Uytterhoeven
2015-04-02 19:12 ` Lina Iyer
2015-04-02 21:12 ` Kevin Hilman
2015-04-02 21:53 ` Lina Iyer
2015-04-07 17:57 ` Kevin Hilman
2015-04-07 20:17 ` Andrew Morton
2015-04-07 22:41 ` Kevin Hilman
2015-04-07 22:53 ` Andrew Morton
2015-04-07 23:27 ` Kevin Hilman
2015-04-07 23:36 ` Andrew Morton
2015-04-08 0:15 ` Kevin Hilman
2015-04-01 19:27 ` Kevin Hilman
2015-04-01 8:58 ` Possible regression in next-20150323 due to "ARM, arm64: kvm: get rid of the bounce page" Will Deacon
2015-04-01 13:54 ` Nishanth Menon
2015-04-01 18:12 ` Kevin Hilman
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