PPC_BCC() emits two instructions to accommodate scenarios where we need
to branch outside the range of a conditional branch. PPC_BCC_SHORT()
emits a single branch instruction and can be used when the branch is
known to be within a conditional branch range.
Convert some of the uses of PPC_BCC() in
During the first pass, addrs[] is still being populated. So, all
branches to following instructions will appear to be going to the start
of the JIT program. Ignore branch range validation for such instructions
and assume those to be in range. Branch range validation will happen
during the second
This is a follow-up series with the pending patches from:
https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=279602=*
Patches 1-5 and 8 are unchanged. Patch 6 is new and patch 7 has changes
based on discussion from the last series. Patch 9 has a small change to
not skip the toc load
Le 11/02/2022 à 02:09, Kees Cook a écrit :
> On Sun, Oct 17, 2021 at 02:38:25PM +0200, Christophe Leroy wrote:
>> Add WRITE_OPD to check that you can't modify function
>> descriptors.
>>
>> Gives the following result when function descriptors are
>> not protected:
>>
>> lkdtm: Performing
Le 11/02/2022 à 01:56, Kees Cook a écrit :
> On Thu, Feb 10, 2022 at 09:30:43PM +1100, Michael Ellerman wrote:
>> Christophe Leroy writes:
>>> diff --git a/kernel/extable.c b/kernel/extable.c
>>> index b0ea5eb0c3b4..1ef13789bea9 100644
>>> --- a/kernel/extable.c
>>> +++ b/kernel/extable.c
>>>
Le 11/02/2022 à 01:54, Kees Cook a écrit :
> On Sun, Oct 17, 2021 at 02:38:17PM +0200, Christophe Leroy wrote:
>> In preparation of making func_desc_t generic, change the ELFv2
>> version to a struct containing 'addr' element.
>>
>> This allows using single helpers common to ELFv1 and ELFv2.
>>
On Mon, 14 Feb 2022, Geert Uytterhoeven wrote:
JFYI, when comparing v5.17-rc4[1] to v5.17-rc3[3], the summaries are:
- build errors: +1/-0
+ error: arch/powerpc/kvm/book3s_64_entry.o: relocation truncated to fit:
R_PPC64_REL14 (stub) against symbol `system_reset_common' defined in .text
Le 14/02/2022 à 10:35, Peter Zijlstra a écrit :
> On Sun, Feb 13, 2022 at 12:05:50AM +0100, Paul Menzel wrote:
>
>> [0.012154][T1] BUG: sleeping function called from invalid context at
>
>> [0.022443][T1] [c84837d0] [c0961aac] >
>> dump_stack_lvl+0xa0/0xec
Hello,
On Mon, Feb 14, 2022 at 07:08:07AM +0100, Paul Menzel wrote:
> Dear PPC folks,
>
>
> On the POWER8 server IBM S822LC running `ppc64_cpu --smt=off` or `ppc64_cpu
> --smt=8`, Linux 5.17-rc4 does not log anything. I would have expected a
> message about the change in number of processing
On Sun, Feb 13, 2022 at 12:05:50AM +0100, Paul Menzel wrote:
> [0.012154][T1] BUG: sleeping function called from invalid context at
> [0.022443][T1] [c84837d0] [c0961aac] >
> dump_stack_lvl+0xa0/0xec (unreliable)
> [0.023356][T1] [c8483820]
On Sun, Feb 13, 2022 at 05:47:52PM +, David Laight wrote:
> From: Segher Boessenkool
> > Sent: 13 February 2022 09:16
> > In an ideal world the compiler could choose the optimal code sequences
> > everywhere. But that won't ever happen, the search space is way too
> > big. So compilers just
Le 11/02/2022 à 17:41, Zi Yan a écrit :
> From: Zi Yan
>
> alloc_contig_range() worked at MAX_ORDER-1 granularity to avoid merging
> pageblocks with different migratetypes. It might unnecessarily convert
> extra pageblocks at the beginning and at the end of the range. Change
>
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