On Wed, Oct 24, 2018 at 12:16 PM Andy Lutomirski wrote:
>
> On Tue, Oct 23, 2018 at 11:43 AM Chang S. Bae
> wrote:
> > +/*
> > + * Interrupts are disabled here. Out of line to be protected from kprobes.
> > + */
> > +static noinline __kprobes unsigned long rd_inactive_gsbase(void)
> > +{
> > +
On 26/10/2018 00:11, Andy Lutomirski wrote:
> On Thu, Oct 25, 2018 at 4:09 PM Andrew Cooper
> wrote:
>> On 25/10/2018 07:09, Juergen Gross wrote:
>>> On 24/10/2018 21:41, Andrew Cooper wrote:
On 24/10/18 20:16, Andy Lutomirski wrote:
> On Tue, Oct 23, 2018 at 11:43 AM Chang S. Bae
On Thu, Oct 25, 2018 at 4:09 PM Andrew Cooper wrote:
>
> On 25/10/2018 07:09, Juergen Gross wrote:
> > On 24/10/2018 21:41, Andrew Cooper wrote:
> >> On 24/10/18 20:16, Andy Lutomirski wrote:
> >>> On Tue, Oct 23, 2018 at 11:43 AM Chang S. Bae
> >>> wrote:
> The helper functions will switch
On 25/10/2018 07:09, Juergen Gross wrote:
> On 24/10/2018 21:41, Andrew Cooper wrote:
>> On 24/10/18 20:16, Andy Lutomirski wrote:
>>> On Tue, Oct 23, 2018 at 11:43 AM Chang S. Bae
>>> wrote:
The helper functions will switch on faster accesses to FSBASE and GSBASE
when the FSGSBASE feat
> On Oct 25, 2018, at 16:00, Andy Lutomirski wrote:
>
> On Thu, Oct 25, 2018 at 12:32 AM Bae, Chang Seok
> wrote:
>>
>>
>>> On Oct 24, 2018, at 12:16, Andy Lutomirski wrote:
>>>
>>> On Tue, Oct 23, 2018 at 11:43 AM Chang S. Bae
>>> wrote:
void x86_fsbase_write_cpu(unsigned long fsba
On Thu, Oct 25, 2018 at 12:32 AM Bae, Chang Seok
wrote:
>
>
> > On Oct 24, 2018, at 12:16, Andy Lutomirski wrote:
> >
> > On Tue, Oct 23, 2018 at 11:43 AM Chang S. Bae
> > wrote:
> >> void x86_fsbase_write_cpu(unsigned long fsbase)
> >> {
> >> - /*
> >> -* Set the selector to 0 as
> On Oct 24, 2018, at 12:16, Andy Lutomirski wrote:
>
> On Tue, Oct 23, 2018 at 11:43 AM Chang S. Bae
> wrote:
>> void x86_fsbase_write_cpu(unsigned long fsbase)
>> {
>> - /*
>> -* Set the selector to 0 as a notion, that the segment base is
>> -* overwritten, which will b
On 24/10/2018 21:41, Andrew Cooper wrote:
> On 24/10/18 20:16, Andy Lutomirski wrote:
>> On Tue, Oct 23, 2018 at 11:43 AM Chang S. Bae
>> wrote:
>>> The helper functions will switch on faster accesses to FSBASE and GSBASE
>>> when the FSGSBASE feature is enabled.
>>>
>>> Accessing user GSBASE nee
On 24/10/18 20:16, Andy Lutomirski wrote:
> On Tue, Oct 23, 2018 at 11:43 AM Chang S. Bae
> wrote:
>> The helper functions will switch on faster accesses to FSBASE and GSBASE
>> when the FSGSBASE feature is enabled.
>>
>> Accessing user GSBASE needs a couple of SWAPGS operations. It is avoidable
On Tue, Oct 23, 2018 at 11:43 AM Chang S. Bae wrote:
>
> The helper functions will switch on faster accesses to FSBASE and GSBASE
> when the FSGSBASE feature is enabled.
>
> Accessing user GSBASE needs a couple of SWAPGS operations. It is avoidable
> if the user GSBASE is saved at kernel entry, be
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