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 11:58:21 -0700 [thread overview]
Message-ID: <7hbnj99epe.fsf@deeprootsystems.com> (raw)
In-Reply-To: <20150327100612.GB1562@arm.com> (Will Deacon's message of "Fri, 27 Mar 2015 10:06:12 +0000")
Will, Ard,
Will Deacon <will.deacon@arm•com> writes:
> On Fri, Mar 27, 2015 at 12:25:54AM +0000, Simon Horman wrote:
>> On Thu, Mar 26, 2015 at 08:29:21AM -0700, Tyler Baker wrote:
>> > On 26 March 2015 at 06:36, Will Deacon <will.deacon@arm•com> wrote:
>> > > On Thu, Mar 26, 2015 at 12:39:39AM +0000, Simon Horman wrote:
>> > >> On Tue, Mar 24, 2015 at 11:13:58AM -0500, Nishanth Menon wrote:
>> > >> > I think we now have a new error: (seen with omap2plus_defconfig)
>> > >> > on next-20150324 :
>> > >> > ./arch/arm/kernel/vmlinux.lds:677: undefined symbol `__hyp_idmap_size'
>> > >> > referenced in expression
>> > >> > make: *** [vmlinux] Error 1
>> > >>
>> > >> Thanks, I am seeing that too.
>> > >>
>> > >> My armchair suggestion is that the following should be reverted.
>> > >>
>> > >> e60a1fec44a2f ("ARM: kvm: implement replacement for ld's LOG2CEIL()")
>> > >> 06f75a1f62000 ("ARM, arm64: kvm: get rid of the bounce page")
>> > >
>> > > Can you try again with the latest -next please? We've merged an additional
>> > > patch aimed at sorting this out. Reverting isn't really an option, as
>> > > there's an awful lot of code that depends on the bounce page removal.
>> >
>> > Here are the kernelci.org -next results[1], if you click the build
>> > status you can dig down into the build failures. next-20150326 has now
>> > hit a compiler bug, Arnd mentioned he was looking into this issue.
>>
>> I have confirmed that next-20150326 does not compile without
>> the following reverted:
>>
>> 12eb3e833961 ("ARM: kvm: assert on HYP section boundaries not actual code size")
>> e60a1fec44a2 ("ARM: kvm: implement replacement for ld's LOG2CEIL()")
>> 06f75a1f6200 ("ARM, arm64: kvm: get rid of the bounce page")
>
> Thanks for testing this and sorry for the continued breakage. Which
> toolchain did you say you were using? Ard has some more patches trying to
> fix this, but none of our toolchains seem to tickle the issue.
I've also tested on the default ARM toolchains available with ubuntu[1]
Are there any updates on this issue?
It ha broken most of the ARM defconfigs in linux-next[2], and since it's
been broken for a week now, it is masking other types of issues that we
can normally find via automated boot testing.
Kevin
[1]
arm-linux-gnueabihf-gcc (Ubuntu/Linaro 4.8.2-16ubuntu4) 4.8.2
arm-linux-gnueabi-gcc (Ubuntu/Linaro 4.7.3-12ubuntu1) 4.7.3
[2] http://kernelci.org/job/next/
next prev parent reply other threads:[~2015-03-31 18:58 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 [this message]
2015-03-31 21:39 ` Ard Biesheuvel
2015-03-31 22:10 ` Kevin Hilman
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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