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Kernel 4.15
Posted: Tue Nov 14, 2017 6:06 pm
by xeno74
Hi All,
The merge window for 4.15 is open! Here is the
first alpha for the X5000 and X1000.
Download:
vmlinux-4.15-alpha1-AmigaOne_X1000_X5000.tar.gz
I successfully tested the
first alpha on my AmigaOne X1000 today. I also tested it on my AmigaOne X5000. Unfortunately it doesn't boot on my AmigaOne X5000.
Could you please test it on your AmigaOne X5000?
Thanks,
Christian
Re: Kernel 4.15
Posted: Tue Nov 14, 2017 11:10 pm
by Spectre660
@xeno74
Hi Christian ,
It does not boot here on my X5000 either .
I also tried unsuccessfully with my own .config too.
A Sam460ex version boots ok on my Sam460ex.
Re: Kernel 4.15
Posted: Wed Nov 15, 2017 5:41 am
by xeno74
Spectre660 wrote:@xeno74
Hi Christian ,
It does not boot here on my X5000 either .
I also tried unsuccessfully with my own .config too.
A Sam460ex version boots ok on my Sam460ex.
Hi Julian,
Good to know. Thanks for testing. I will compile the alpha2 in the next days and test again. If it doesn’t work either then I will bisect between the final 4.14 and the alpha1.
Thanks,
Christian
Re: Kernel 4.15
Posted: Thu Nov 16, 2017 4:20 pm
by xeno74
Hi All,
I released the
alpha2 for the X5000 and X1000 today. First, I tested it on my AmigaOne X1000. It boots but unfortunately hardware 3D acceleration doesn't work anymore. It is only
Gallium 0.4 on softpipe available. I tested it with Debian Sid PPC32, ubuntu MATE 16.04.3 LTS PPC32, MATE PowerPC Remix 2017 PPC32, fedora 26 Server PPC64, and with openSUSE Tumbleweed 20170924 PPC64 on my AmigaOne X1000. I think there is a bug in the latest
DRM updates.
I also tested the
alpha2 on my AmigaOne X5000. Unfortunately it doesn't boot. I will bisect between the
final 4.14 and the
alpha1.
New:
Download:
vmlinux-4.15-alpha2-AmigaOne_X1000_X5000.tar.gz
@Julian
Could you please test the hardware 3D acceleration on your Sam460ex?
@All
Please test it on your X5000 and X1000.
Thanks,
Christian
Re: Kernel 4.15
Posted: Thu Nov 16, 2017 6:19 pm
by Spectre660
HI Christian,
Hardware acceleration has never worked on Sam460ex for any kernel.
Regards
Julian
Re: Kernel 4.15
Posted: Thu Nov 16, 2017 6:53 pm
by xeno74
Spectre660 wrote:HI Christian,
Hardware acceleration has never worked on Sam460ex for any kernel.
Regards
Julian
OK
Re: Kernel 4.15
Posted: Fri Nov 17, 2017 6:16 pm
by xeno74
Hi All,
I bisected between the final kernel 4.14.0 and the alpha1.
a8a217c22116eff6c120d753c9934089fb229af0 is the first bad commit.
Git bisect log:
Code: Select all
git log
git bisect start
git bisect good bebc6082da0a9f5d47a1ea2edc099bf671058bd4 (Linux 4.14.0 final)
git bisect bad 894025f24bd028942da3e602b87d9f7223109b14 (Linux 4.15 alpha1 Mon Nov 13 21:14:07 2017 -0800)
Output:
Bisecting: 1128 revisions left to test after this (roughly 10 steps)
[7d58e1c9059eefe0066c5acf2ffa582f6f0180e3] Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad
Output:
Bisecting: 559 revisions left to test after this (roughly 9 steps)
[8e9a2dba8686187d8c8179e5b86640e653963889] Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad
Output:
Bisecting: 272 revisions left to test after this (roughly 8 steps)
[dee02770cdcd8bc06a48c917ce5df2fb56cf6059] Merge tag 'mmc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
git bisect good
Output:
Bisecting: 129 revisions left to test after this (roughly 7 steps)
[d60a540ac5f2fbab3e6fe592717b445bd7343a91] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
git bisect good
Output:
Bisecting: 64 revisions left to test after this (roughly 6 steps)
[7a10e2a9190628a4024ea394ce7bd641ae40ffd1] x86: Use lockdep to assert IRQs are disabled/enabled
git bisect bad
Output:
Bisecting: 32 revisions left to test after this (roughly 5 steps)
[eeafcc5a5925d0819dad462eac1d42fda5fbe36f] locking/atomics, firmware/ivc: Convert ACCESS_ONCE() to READ_ONCE()/WRITE_ONCE()
git bisect bad
Output:
Bisecting: 15 revisions left to test after this (roughly 4 steps)
[a4c1887d4c1462b0ec5a8989f8ba3cdd9057a299] locking/arch: Remove dummy arch_{read,spin,write}_lock_flags() implementations
git bisect bad
Output:
Bisecting: 7 revisions left to test after this (roughly 3 steps)
[c0905115a55c8a3011d7b7e6ee5d63653c1e99f1] locking/arch, ia64: Add __down_read_killable()
git bisect good
Output:
Bisecting: 3 revisions left to test after this (roughly 2 steps)
[0dc208b5d5feedc795cbf124539decd182c8e99e] locking/rwsem, fs: Use killable down_read() in iterate_dir()
git bisect good
Output:
Bisecting: 1 revision left to test after this (roughly 1 step)
[a8a217c22116eff6c120d753c9934089fb229af0] locking/core: Remove {read,spin,write}_can_lock()
git bisect bad
Output:
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[26c4eb192c6224e5297496cead36404b62fb071b] locking/rwsem, security/apparmor: Replace homebrew use of write_can_lock() with lockdep
git bisect good
Output:
a8a217c22116eff6c120d753c9934089fb229af0 is the first bad commit
commit a8a217c22116eff6c120d753c9934089fb229af0
Author: Will Deacon <will.deacon@arm.com>
Date: Tue Oct 3 19:25:27 2017 +0100
locking/core: Remove {read,spin,write}_can_lock()
Outside of the locking code itself, {read,spin,write}_can_lock() have no
users in tree. Apparmor (the last remaining user of write_can_lock()) got
moved over to lockdep by the previous patch.
This patch removes the use of {read,spin,write}_can_lock() from the
BUILD_LOCK_OPS macro, deferring to the trylock operation for testing the
lock status, and subsequently removes the unused macros altogether. They
aren't guaranteed to work in a concurrent environment and can give
incorrect results in the case of qrwlock.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: paulmck@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1507055129-12300-2-git-send-email-will.deacon@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
:040000 040000 5b435422698e4cb10a69c8c5d63734785b4e1f3c 35093937ba487d8b5ecf773c38439f99801f4041 M arch
:040000 040000 c3fa2d1fc41218e43a76eb6d97808de5be3a0355 6d4682dd193d79f868b28eca9714716ce3dbf7c9 M include
:040000 040000 2ac2fb1e58edcf3f6f912ecf66431f8b0e6914b9 d7b7814b7b349e2f0fd7578b35726037294ea9b4 M kernel
Cheers,
Christian
Re: Kernel 4.15
Posted: Sat Nov 18, 2017 8:47 pm
by xeno74
Hi All,
I compiled the latest git kernel today. Unfortunately the X5000 doesn't boot. I tried to revert the bad commit I have found with bisect but unfortunately it doesn't work because of some conflicts.
Code: Select all
git revert a8a217c22116eff6c120d753c9934089fb229af0
Code: Select all
error: could not revert a8a217c... locking/core: Remove {read,spin,write}_can_lock()
hint: after resolving the conflicts, mark the corrected paths
hint: with 'git add <paths>' or 'git rm <paths>'
hint: and commit the result with 'git commit'
I tried to revert the bad commit in the alpha1 sources (Git sources from Mon Nov 13 21:14:07 2017 -0800) but unfortunately it doesn't work either.
Code: Select all
error: could not revert a8a217c... locking/core: Remove {read,spin,write}_can_lock()
hint: after resolving the conflicts, mark the corrected paths
hint: with 'git add <paths>' or 'git rm <paths>'
hint: and commit the result with 'git commit'
I will try to figure out the problem in the source code of the bad commit.
Cheers,
Christian
Re: Kernel 4.15
Posted: Sat Nov 18, 2017 10:47 pm
by xeno74
Hi All,
I have found some PowerPC releated code in the bad commit.
vi arch/powerpc/include/asm/spinlock.h
I created a small patch to revert this code.
Code: Select all
--- a/arch/powerpc/include/asm/spinlock.h 2017-11-18 20:11:40.807868708 +0100
+++ b/arch/powerpc/include/asm/spinlock.h 2017-11-18 20:54:32.185724975 +0100
@@ -182,6 +182,9 @@ static inline void arch_spin_unlock(arch
* read-locks.
*/
+#define arch_read_can_lock(rw) ((rw)->lock >= 0)
+#define arch_write_can_lock(rw) (!(rw)->lock)
+
#ifdef CONFIG_PPC64
#define __DO_SIGN_EXTEND "extsw %0,%0\n"
#define WRLOCK_TOKEN LOCK_TOKEN /* it's negative */
patch -p0 < spinlock_4.15-1.patch
Output:
Code: Select all
patching file a/arch/powerpc/include/asm/spinlock.h
After that I compiled the kernel again. Unfortunately it doesn't boot.
I will report the problem to the Linux PPC mailing list.
Cheers,
Christian
Re: Kernel 4.15
Posted: Sat Nov 18, 2017 11:39 pm
by xeno74
I reported the boot issue on the Linuxppc mailing list today.
Link:
Qoriq P5020 PowerPC board doesn't boot with the latest git version anymore
-- Christian