Re: [PATCH? v2] powerpc: Hard wire PT_SOFTE value to 1 in gpr_get() too

2020-06-11 Thread Jan Kratochvil
On Thu, 11 Jun 2020 12:58:31 +0200, Oleg Nesterov wrote: > On 06/11, Madhavan Srinivasan wrote: > > On 6/10/20 8:37 PM, Oleg Nesterov wrote: > > > > This is not consistent and this breaks > > > > http://sourceware.org/systemtap/wiki/utrace/tests/user-regs-peekpoke > > this is 404. Attaching the t

Re: PPC upstream kernel ignored DABR bug

2007-11-28 Thread Jan Kratochvil
On Wed, 28 Nov 2007 13:28:48 +0100, Arnd Bergmann wrote: > On Wednesday 28 November 2007, Jan Kratochvil wrote: > > Please be aware DABR works fine if the same code runs just 1 (always) or > > 2 (sometimes) threads.  It starts failing with too many threads running: > > >

Re: PPC upstream kernel ignored DABR bug

2007-11-28 Thread Jan Kratochvil
On Tue, 27 Nov 2007 23:35:36 +0100, Arnd Bergmann wrote: > On Monday 26 November 2007, Jan Kratochvil wrote: > > Hi, > > > > this testcase: > > http://people.redhat.com/jkratoch/dabr-lost.c > > > > reproduces a PPC DABR kernel bug.  The variable `v

PPC upstream kernel ignored DABR bug

2007-11-26 Thread Jan Kratochvil
p' syscall. If you define WORKAROUND_SET_DABR_IN_SYSCALL in the testcase it busyloops in the userland and the bug gets no longer reproduced. I got it reproduced on a utrace-patched kernel on dual-CPU Power5 and Roland McGrath reported it reproduced on the vanilla upstream kernel on a Mac G5.