On Mon, Sep 02, 2024 at 04:27:12PM +0200, Christophe Leroy wrote:
> Hi Jason, hi Michael,
>
> Le 02/09/2024 à 16:19, Jason A. Donenfeld a écrit :
> > On Mon, Sep 02, 2024 at 04:16:48PM +0200, Christophe Leroy wrote:
> >> Can do that, but there will still be a problem with chacha selftests if
> >>
Hi Jason, hi Michael,
Le 02/09/2024 à 16:19, Jason A. Donenfeld a écrit :
On Mon, Sep 02, 2024 at 04:16:48PM +0200, Christophe Leroy wrote:
Can do that, but there will still be a problem with chacha selftests if
I don't opt-out the entire function content when it is ppc64. It will
build properl
On Mon, Sep 02, 2024 at 04:16:48PM +0200, Christophe Leroy wrote:
> Can do that, but there will still be a problem with chacha selftests if
> I don't opt-out the entire function content when it is ppc64. It will
> build properly but if someone runs it on a ppc64 it will likely crash
> because on
Le 02/09/2024 à 16:00, Jason A. Donenfeld a écrit :
On Mon, Sep 02, 2024 at 03:12:47PM +0200, Christophe Leroy wrote:
Le 02/09/2024 à 14:41, Jason A. Donenfeld a écrit :
On Mon, Sep 02, 2024 at 02:04:42PM +0200, Christophe Leroy wrote:
SYM_FUNC_START(__arch_chacha20_blocks_nostack)
On Mon, Sep 02, 2024 at 03:12:47PM +0200, Christophe Leroy wrote:
>
>
> Le 02/09/2024 à 14:41, Jason A. Donenfeld a écrit :
> > On Mon, Sep 02, 2024 at 02:04:42PM +0200, Christophe Leroy wrote:
> >> SYM_FUNC_START(__arch_chacha20_blocks_nostack)
> >> #ifdef __powerpc64__
> >> - blr
> >> + s
Le 02/09/2024 à 14:41, Jason A. Donenfeld a écrit :
On Mon, Sep 02, 2024 at 02:04:42PM +0200, Christophe Leroy wrote:
SYM_FUNC_START(__arch_chacha20_blocks_nostack)
#ifdef __powerpc64__
- blr
+ std r5, -216(r1)
+
+ std r14, -144(r1)
+ std r15, -136(r1)
On Mon, Sep 02, 2024 at 02:04:42PM +0200, Christophe Leroy wrote:
> SYM_FUNC_START(__arch_chacha20_blocks_nostack)
> #ifdef __powerpc64__
> - blr
> + std r5, -216(r1)
> +
> + std r14, -144(r1)
> + std r15, -136(r1)
> + std r16, -128(r1)
> + std r17, -12
Extend getrandom() vDSO implementation to powerpc64.
Tested on QEMU on both ppc64_defconfig and ppc64le_defconfig.
The results are not precise as it is QEMU on an x86 laptop, but
no need to be precise to see the benefit.
~ # ./vdso_test_getrandom bench-single
vdso: 2500 times in 4.971
