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Re: [Qemu-devel] Shifts, ppc[64], xtensa
From: |
Richard Henderson |
Subject: |
Re: [Qemu-devel] Shifts, ppc[64], xtensa |
Date: |
Wed, 19 Sep 2012 11:01:57 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120828 Thunderbird/15.0 |
On 09/19/2012 10:51 AM, Aurelien Jarno wrote:
> That said it is not a valid reason to not keep the value during
> re-translation, as it means the TB will exit instead of linking to
> the next one. The consequences are only the performance.
We still have the problem of when is the goto_tb link initialized the *first*
time?
Where we expect the goto_tb to fall through to stuff+exit_tb?
For i386 it's during translation, with no care for re-translation.
For ARM? I can't see that it is.
For PPC, malc has already verified that it *never* happens. If he
puts "trap" insns there instead of "nop" insns, he'll see the trap.
r~
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, (continued)
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Richard Henderson, 2012/09/18
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Peter Maydell, 2012/09/19
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Richard Henderson, 2012/09/19
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Richard Henderson, 2012/09/19
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Peter Maydell, 2012/09/19
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Richard Henderson, 2012/09/19
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Aurelien Jarno, 2012/09/19
- Re: [Qemu-devel] Shifts, ppc[64], xtensa,
Richard Henderson <=
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Peter Maydell, 2012/09/19
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Richard Henderson, 2012/09/19
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Richard Henderson, 2012/09/19
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Peter Maydell, 2012/09/19
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Richard Henderson, 2012/09/19
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Max Filippov, 2012/09/19
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Richard Henderson, 2012/09/20
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, Max Filippov, 2012/09/20
- Re: [Qemu-devel] Shifts, ppc[64], xtensa, malc, 2012/09/20