On Fri, 26 Jan 2018 13:14:46 +0100
Yves-Alexis Perez wrote:
> On Wed, 2018-01-24 at 16:57 +, David Woodhouse wrote:
> > Some old Atoms, anything in family 5 or 4, and newer CPUs when they
> > advertise
> > the IA32_ARCH_CAPABILITIES MSR and it has the RDCL_NO bit set, are not
> > vulnerable
On 1/26/2018 7:27 AM, Dave Hansen wrote:
On 01/26/2018 04:14 AM, Yves-Alexis Perez wrote:
I know we'll still be able to manually enable PTI with a command line option,
but it's also a hardening feature which has the nice side effect of emulating
SMEP on CPU which don't support it (e.g the Atom b
On 01/26/2018 04:14 AM, Yves-Alexis Perez wrote:
> I know we'll still be able to manually enable PTI with a command line option,
> but it's also a hardening feature which has the nice side effect of emulating
> SMEP on CPU which don't support it (e.g the Atom boxes above).
For Meltdown-vulnerable
On Fri, 2018-01-26 at 13:14 +0100, Yves-Alexis Perez wrote:
> On Wed, 2018-01-24 at 16:57 +, David Woodhouse wrote:
> > Some old Atoms, anything in family 5 or 4, and newer CPUs when they
> > advertise
> > the IA32_ARCH_CAPABILITIES MSR and it has the RDCL_NO bit set, are not
> > vulnerable.
On Wed, 2018-01-24 at 16:57 +, David Woodhouse wrote:
> Some old Atoms, anything in family 5 or 4, and newer CPUs when they advertise
> the IA32_ARCH_CAPABILITIES MSR and it has the RDCL_NO bit set, are not
> vulnerable.
>
> Roll the AMD exemption into the x86_match_cpu() table too.
>
> Base
On Wed, Jan 24, 2018 at 04:57:04PM +, David Woodhouse wrote:
> Some old Atoms, anything in family 5 or 4, and newer CPUs when they advertise
> the IA32_ARCH_CAPABILITIES MSR and it has the RDCL_NO bit set, are not
> vulnerable.
>
> Roll the AMD exemption into the x86_match_cpu() table too.
>
Some old Atoms, anything in family 5 or 4, and newer CPUs when they advertise
the IA32_ARCH_CAPABILITIES MSR and it has the RDCL_NO bit set, are not
vulnerable.
Roll the AMD exemption into the x86_match_cpu() table too.
Based on suggestions from Dave Hansen and Alan Cox.
Signed-off-by: David Wo
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