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Re: [Qemu-devel] [PATCH 2/2] trace: separate MMIO tracepoints from TB-ac
Re: [Qemu-devel] [PATCH 2/2] trace: separate MMIO tracepoints from TB-access tracepoints
Wed, 23 Mar 2016 17:53:35 +0100
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0
On 23/03/2016 17:47, Hollis Blanchard wrote:
> Paolo, is it true that only TB-invalidating writes go through the
> io_mem_notdirty path? I'm looking at the live migration code now, and it
> seems like every memory write will go through that path when global
> dirty memory logging is enabled.
When live migration is enabled, writes to clean memory (almost all of
them) will go through that path indeed. Some writes to the framebuffer
will go through that path too.
It depends on
memory_region_get_ram_addr(section->mr) + xlat))