On Mon, Jan 14, 2019 at 03:59:08PM +0100, Ard Biesheuvel wrote:
> On Mon, 14 Jan 2019 at 15:29, Leif Lindholm wrote:
> >
> > On Mon, Jan 07, 2019 at 08:15:02AM +0100, Ard Biesheuvel wrote:
> > > Wire up the access flag (AF) page table attribute to the EFI_MEMORY_RP
> > > permission attribute, so t
On Mon, 14 Jan 2019 at 15:29, Leif Lindholm wrote:
>
> On Mon, Jan 07, 2019 at 08:15:02AM +0100, Ard Biesheuvel wrote:
> > Wire up the access flag (AF) page table attribute to the EFI_MEMORY_RP
> > permission attribute, so that attempts to read from such a region will
> > trigger an access flag fa
On Mon, Jan 07, 2019 at 08:15:02AM +0100, Ard Biesheuvel wrote:
> Wire up the access flag (AF) page table attribute to the EFI_MEMORY_RP
> permission attribute, so that attempts to read from such a region will
> trigger an access flag fault.
>
> Note that this is a stronger notion than just read p
Wire up the access flag (AF) page table attribute to the EFI_MEMORY_RP
permission attribute, so that attempts to read from such a region will
trigger an access flag fault.
Note that this is a stronger notion than just read protection, since
it now implies that any write or execute attempt is trapp
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