svn commit: r325530 - in head/sys: amd64/amd64 arm64/arm64 fs/tmpfs kern mips/mips powerpc/aim powerpc/powerpc sparc64/sparc64 vm x86/iommu

[Emmanuel Vadot]

 Hello Jeff,

On Wed, 8 Nov 2017 02:39:37 +0000 (UTC)
Jeff Roberson <jeff at FreeBSD.org> wrote:

> Author: jeff
> Date: Wed Nov  8 02:39:37 2017
> New Revision: 325530
> URL: https://svnweb.freebsd.org/changeset/base/325530
> 
> Log:
>   Replace manyinstances of VM_WAIT with blocking page allocation flags
>   similar to the kernel memory allocator.
>   
>   This simplifies NUMA allocation because the domain will be known at wait
>   time and races between failure and sleeping are eliminated.  This also
>   reduces boilerplate code and simplifies callers.
>   
>   A wait primitive is supplied for uma zones for similar reasons.  This
>   eliminates some non-specific VM_WAIT calls in favor of more explicit
>   sleeps that may be satisfied without new pages.
>   
>   Reviewed by:	alc, kib, markj
>   Tested by:	pho
>   Sponsored by:	Netflix, Dell/EMC Isilon
> 

 This break armv7 (atleast) kernel :

KDB: debugger backends:
ddb KDB: current backend:
ddb Copyright (c) 1992-2017 The FreeBSD
Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992,
1993, 1994 The Regents of the University of California. All rights
reserved. FreeBSD is a registered trademark of The FreeBSD
Foundation. FreeBSD 12.0-CURRENT #51 3c355d849c9(HEAD): Wed Nov  8
23:24:16 CET 2017
elbarto at knuckles.blih.net:/usr/home/elbarto/Work/freebsd/obj/usr/home/elbarto/Work/freebsd/freebsd.git/arm.armv7/sys/GENERIC
arm FreeBSD clang version 5.0.0 (tags/RELEASE_500/final 312559) (based
on LLVM 5.0.0svn) WARNING: WITNESS option enabled, expect reduced
performance. panic: inconsistent object(0)/req(8) cpuid =
0 time =
1 KDB: stack
backtrace: (null)() at
0xc055f24c pc = 0xc055f24c  lr = 0xc005ed40
(0xc005ed40) sp = 0xc0c13908  fp =
0xc0c13a20 (null)() at
0xc005ed40 pc = 0xc005ed40  lr = 0xc0269d58
(0xc0269d58) sp = 0xc0c13a28  fp =
0xc0c13a48 r4 = 0x00000100  r5 =
0x00000001 r6 = 0xc06e17cd  r7 =
0xc092f530 (null)() at 0xc0269d58                               
         pc = 0xc0269d58  lr = 0xc0269c00
(0xc0269c00) sp = 0xc0c13a50  fp =
0xc0c13a64 r4 = 0xc06e17cd  r5 =
0xc0c13a6c r6 = 0x00000000  r7 =
0x00000008 r8 = 0xc0c13b0b  r9 = 0x00000000                         
        r10 =
0x00000008 (null)() at
0xc0269c00 pc = 0xc0269c00  lr = 0xc0544768
(0xc0544768) sp = 0xc0c13a6c  fp =
0xc0c13aa8 r4 = 0xc0c13a64  r5 =
0xc0269c00 r6 = 0xc0c13a6c  r7 =
0x00000000 r8 = 0x00000000  r9 =
0x00000000 r10 =
0x00000008                                                                      
...

Thanks,

-- 
Emmanuel Vadot <manu at bidouilliste.com> <manu at freebsd.org>