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[Qemu-devel] Re: TLB entry with separate addr_{read|write|code}?
From: |
Jun Koi |
Subject: |
[Qemu-devel] Re: TLB entry with separate addr_{read|write|code}? |
Date: |
Fri, 16 Apr 2010 14:15:40 +0900 |
On Fri, Apr 16, 2010 at 11:49 AM, Jun Koi <address@hidden> wrote:
> Hi,
>
> In the TLB entry, why do we need to maintain separately addr_read,
> addr_write and addr_code? Is it impossible to have only one for all
> the purposes?
>
> As far as I can see in tlb_set_page(), these fields are mutually
> exclusive, as they either enable or get invalid value (-1).
Hmm I looked at the code again, and the attributes can be read, write
and execute at the same time.
Thanks,
J