On 12/11, Nicolas Pitre wrote:
> On Fri, 11 Dec 2015, Arnd Bergmann wrote:
>
> > On Friday 11 December 2015 12:22:20 Nicolas Pitre wrote:
> > > Subject: [PATCH] ARM: Runtime patch udiv/sdiv instructions into
> > > __aeabi_{u}idiv()
> > >
>
> Thanks.
>
> > Before you put it in the patch
On Friday 11 December 2015 01:26:25 Nicolas Pitre wrote:
> This is my counter proposal to Stephen's version. Those patches and the
> discussion that followed are available here:
>
> http://news.gmane.org/group/gmane.linux.kbuild.devel/thread=14007
>
> I think what I propose here is much
On Fri, 11 Dec 2015, Arnd Bergmann wrote:
> On Friday 11 December 2015 01:26:25 Nicolas Pitre wrote:
>
> > This is my counter proposal to Stephen's version. Those patches and the
> > discussion that followed are available here:
> >
> >
On Friday 11 December 2015 12:10:29 Nicolas Pitre wrote:
> On Fri, 11 Dec 2015, Arnd Bergmann wrote:
> > On Friday 11 December 2015 01:26:25 Nicolas Pitre wrote:
> > > Of course the ultimate performance will come from having gcc emit those
> > > div instructions directly, but that would make the
On Fri, Dec 11, 2015 at 10:50:02PM +0100, Arnd Bergmann wrote:
> On Friday 11 December 2015 12:10:29 Nicolas Pitre wrote:
> > On Fri, 11 Dec 2015, Arnd Bergmann wrote:
> > > #ifdef CONFIG_CPU_PJ4B
> > > .type __v7_pj4b_proc_info, #object
> > > __v7_pj4b_proc_info:
> > > .long
On Friday 11 December 2015 22:34:16 Russell King - ARM Linux wrote:
>
> __v7_pj4b_proc_info:
> - .long 0x562f5840
> - .long 0xfff0
> + .long 0x560f5800
> + .long 0xff0fff00
>
> So it was to include Armada 370. So this now brings up the question...
> what is
On Fri, 11 Dec 2015, Arnd Bergmann wrote:
> On Friday 11 December 2015 22:34:16 Russell King - ARM Linux wrote:
> >
> > __v7_pj4b_proc_info:
> > - .long 0x562f5840
> > - .long 0xfff0
> > + .long 0x560f5800
> > + .long 0xff0fff00
> >
> > So it was to include
On Fri, 11 Dec 2015, Arnd Bergmann wrote:
> On Friday 11 December 2015 12:10:29 Nicolas Pitre wrote:
> > On Fri, 11 Dec 2015, Arnd Bergmann wrote:
> > > On Friday 11 December 2015 01:26:25 Nicolas Pitre wrote:
> > > > Of course the ultimate performance will come from having gcc emit those
> > >
On Friday 11 December 2015 17:00:50 Nicolas Pitre wrote:
> You seem to have a good grasp of the problem space. I'd suggest you make
> a patch! ;-)
Yes, I can do that once all the ARMv6/v7 multiplatform work is done, that
should at least reduce the number of special cases.
> > > > #ifdef
On Friday 11 December 2015 12:22:20 Nicolas Pitre wrote:
> Subject: [PATCH] ARM: Runtime patch udiv/sdiv instructions into
> __aeabi_{u}idiv()
>
> The ARM compiler inserts calls to __aeabi_uidiv() and
> __aeabi_idiv() when it needs to perform division on signed and
> unsigned integers. If a
On Fri, 11 Dec 2015, Arnd Bergmann wrote:
> On Friday 11 December 2015 12:22:20 Nicolas Pitre wrote:
> > Subject: [PATCH] ARM: Runtime patch udiv/sdiv instructions into
> > __aeabi_{u}idiv()
> >
> > The ARM compiler inserts calls to __aeabi_uidiv() and
> > __aeabi_idiv() when it needs to
On Friday 11 December 2015 19:01:00 Nicolas Pitre wrote:
> On Fri, 11 Dec 2015, Arnd Bergmann wrote:
>
> > On Friday 11 December 2015 22:34:16 Russell King - ARM Linux wrote:
> > >
> > > __v7_pj4b_proc_info:
> > > - .long 0x562f5840
> > > - .long 0xfff0
> > > + .long
On Fri, 11 Dec 2015, Nicolas Pitre wrote:
> On Fri, 11 Dec 2015, Arnd Bergmann wrote:
>
> > Strictly speaking, we can ignore the thumb instruction for pj4, as all
> > variants also support the normal T2 opcode for udiv/sdiv.
>
> OK it is gone.
>
> Now... The code bails out if ARM mode and
13 matches
Mail list logo
