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Re: [Qemu-devel] qemu physical address
From: |
Blue Swirl |
Subject: |
Re: [Qemu-devel] qemu physical address |
Date: |
Wed, 18 Apr 2012 20:03:09 +0000 |
On Wed, Apr 18, 2012 at 01:28, Xin Tong <address@hidden> wrote:
> I am reading how qemu refill TLB working.
>
> target-i386/helper.c
>
> pte = pte & env->a20_mask;
>
> /* Even if 4MB pages, we map only one 4KB page in the cache to
> avoid filling it too fast */
> page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
> paddr = (pte & TARGET_PAGE_MASK) + page_offset;
> vaddr = virt_addr + page_offset;
>
>
> How can the paddr be bigger than 4G even though i gave the machine
> 4096 MB of memory ( i.e. qemu -m 4096 ...). should not paddr be within
> 0 - 4G-1 ?
No. There's PAE and the same code is used by both i386 and x86_64.
>
> Thanks
>
> Xin
>
- [Qemu-devel] qemu physical address, Xin Tong, 2012/04/17
- Re: [Qemu-devel] qemu physical address,
Blue Swirl <=
- Re: [Qemu-devel] qemu physical address, Xin Tong, 2012/04/18
- Re: [Qemu-devel] qemu physical address, Blue Swirl, 2012/04/19
- Re: [Qemu-devel] qemu physical address, Xin Tong, 2012/04/19
- Re: [Qemu-devel] qemu physical address, Xin Tong, 2012/04/20
- Re: [Qemu-devel] qemu physical address, Blue Swirl, 2012/04/21
- Re: [Qemu-devel] qemu physical address, Xin Tong, 2012/04/21
- Re: [Qemu-devel] qemu physical address, Blue Swirl, 2012/04/21