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Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set |
Date: |
Mon, 18 Jul 2016 22:54:55 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1 |
On 18/07/2016 21:04, Sergey Fedorov wrote:
> How much performance do we really need and how much performance can we
> loose introducing such a flag? We should yet gain something reducing
> tb_lock contention. Maybe it is worthwhile to use a dedicated flag to
> keep code more clear? There's always a question of balance between code
> structure and maintainability (future of the TCG) on one hand and
> performance (present of the TCG) on the other hand.
Fair enough, can you send a patch that does this? If we can do the
check only just before tb_add_jump, indeed there's no reason to do all
the mess with invalid state.
Paolo
- Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set, (continued)
- Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set, Paolo Bonzini, 2016/07/18
- Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set, Sergey Fedorov, 2016/07/18
- Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set, Paolo Bonzini, 2016/07/18
- Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set, Sergey Fedorov, 2016/07/18
- Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set, Paolo Bonzini, 2016/07/18
- Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set, Sergey Fedorov, 2016/07/18
- Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set, Paolo Bonzini, 2016/07/18
- Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set, Sergey Fedorov, 2016/07/18
- Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set, Paolo Bonzini, 2016/07/18
- Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set, Sergey Fedorov, 2016/07/18
- Re: [Qemu-devel] [PATCH] atomics: add volatile_read/volatile_set,
Paolo Bonzini <=