On 12/11/18 1:35 PM, Mark Cave-Ayland wrote:
> Looking at your profiles above, the primary hotspot appears to be
> helper_lookup_tb_ptr(). However as someone quite new to the TCG parts of
> QEMU, I
> couldn't tell you whether or not this is to be expected.
>
> Perhaps a question for Richard:
On 11/12/2018 01:20, David Gibson wrote:
> On Mon, Dec 10, 2018 at 09:54:51PM +0100, BALATON Zoltan wrote:
>> On Mon, 10 Dec 2018, David Gibson wrote:
>>> On Mon, Dec 10, 2018 at 01:33:53AM +0100, BALATON Zoltan wrote:
On Fri, 7 Dec 2018, Mark Cave-Ayland wrote:
> This patchset is an
On Tue, 11 Dec 2018, David Gibson wrote:
On Mon, Dec 10, 2018 at 09:54:51PM +0100, BALATON Zoltan wrote:
Yes, I don't really know what these tests use but I think "lame" test is
mostly floating point but tried with "lame_vmx" which should at least use
some vector ops and "mplayer -benchmark"
On Mon, Dec 10, 2018 at 09:54:51PM +0100, BALATON Zoltan wrote:
> On Mon, 10 Dec 2018, David Gibson wrote:
> > On Mon, Dec 10, 2018 at 01:33:53AM +0100, BALATON Zoltan wrote:
> > > On Fri, 7 Dec 2018, Mark Cave-Ayland wrote:
> > > > This patchset is an attempt at trying to improve the VMX
On Mon, 10 Dec 2018, Richard Henderson wrote:
On 12/10/18 2:54 PM, BALATON Zoltan wrote:
Tried it on i5 650 which has: sse sse2 ssse3 sse4_1 sse4_2. I assume x86_64
should be supported but not sure what are the CPU requirements.
Not quite. I only support avx1 and later.
I thought about
On 12/10/18 2:54 PM, BALATON Zoltan wrote:
>> What was your host machine. IIUC this change will only improve
>> performance if the host tcg backend is able to implement TCG vector
>> ops in terms of vector ops on the host.
>
> Tried it on i5 650 which has: sse sse2 ssse3 sse4_1 sse4_2. I assume
On Mon, 10 Dec 2018, David Gibson wrote:
On Mon, Dec 10, 2018 at 01:33:53AM +0100, BALATON Zoltan wrote:
On Fri, 7 Dec 2018, Mark Cave-Ayland wrote:
This patchset is an attempt at trying to improve the VMX (Altivec) instruction
performance by making use of the new TCG vector operations where
On Mon, Dec 10, 2018 at 01:33:53AM +0100, BALATON Zoltan wrote:
> On Fri, 7 Dec 2018, Mark Cave-Ayland wrote:
> > This patchset is an attempt at trying to improve the VMX (Altivec)
> > instruction
> > performance by making use of the new TCG vector operations where possible.
>
> This is very
On Fri, 7 Dec 2018, Mark Cave-Ayland wrote:
This patchset is an attempt at trying to improve the VMX (Altivec) instruction
performance by making use of the new TCG vector operations where possible.
This is very welcome, thanks for doing this.
In order to use TCG vector operations, the
