Re: [Qemu-devel] TARGET_PAGE_BITS

[ali saeedi]

thank you for answer
So. why do we have right shift in qemu by "TARGET_PAGE_BITS" ? for exampe
in below code, what does it mean?

static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
                                                       ram_addr_t length)
{
    unsigned long end, page;

    end = TARGET_PAGE_ALIGN(start + length) >> TARGET_PAGE_BITS;
    page = start >> TARGET_PAGE_BITS;
...
}
thanks a lot

On Fri, Jun 23, 2017 at 7:11 PM, Alex Bennée <address@hidden> wrote:

>
> ali saeedi <address@hidden> writes:
>
> > Hello
> > What does TARGET_PAGE_BITS mean in qemu code?
>
> It's the page size of the target. e.g.
>
>   TARGET_PAGE_BITS 12
>
>   1 << 12 = 4096 = 4k pages
>
>
> > thanks a lot
>
>
> --
> Alex Bennée
>