Re: [Qemu-devel] TLB addend field

2017-06-21 Thread Paolo Bonzini
On 21/06/2017 16:15, Theodore Dubois wrote: > Hi, I’ve got a question about the addend field in the TLB. Why use > this instead of a pointer to the host page? I would think the speed > difference would be unmeasurable. After the TLB check you have computed "x & ~(PAGE_SIZE - 1)", but not "x & (PAG

[Qemu-devel] TLB addend field

2017-06-21 Thread Theodore Dubois
Hi, I’ve got a question about the addend field in the TLB. Why use this instead of a pointer to the host page? I would think the speed difference would be unmeasurable. ~Theodore