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Re: [Xen-devel] enable NX (execution disabled) bit for Com0?

To: Mohamad Rezaei <mmrezaie@xxxxxxxxx>
From: Tim Deegan <tim@xxxxxxx>
Date: Tue, 10 Jan 2012 09:43:03 +0000
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Tue, 10 Jan 2012 09:43:51 +0000
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

At 14:43 +0330 on 09 Jan (1326120209), Mohamad Rezaei wrote:
> Is there a way to re-enable NX bit from Xen for a kernel that has
> disabled it?

Do you mean in the pagetable entries?  Then yes -- you can do it the
same way you're making pages read-only, by fiddling with the PTE flags in
_sh_propagate().

Tim.

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- [Xen-devel] enable NX (execution disabled) bit for Com0?
  - From: Mohamad Rezaei

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