On Wed, Feb 1, 2017 at 9:14 PM, Andy Lutomirski wrote:
> On Thu, Jan 26, 2017 at 8:59 AM, Thomas Garnier wrote:
>> This patch makes the GDT remapped pages read-only to prevent corruption.
>> This change is done only on 64 bit.
>>
>> The native_load_tr_desc function was adapted to correctly handle
* Andy Lutomirski wrote:
> On Wed, Feb 1, 2017 at 1:15 AM, Ingo Molnar wrote:
> >
> > * Thomas Garnier wrote:
> >
> >> This patch makes the GDT remapped pages read-only to prevent corruption.
> >> This change is done only on 64 bit.
> >
>
>
> >>
> >> - table_base = gdt->address;
> >> +
On Thu, Jan 26, 2017 at 8:59 AM, Thomas Garnier wrote:
> This patch makes the GDT remapped pages read-only to prevent corruption.
> This change is done only on 64 bit.
>
> The native_load_tr_desc function was adapted to correctly handle a
> read-only GDT. The LTR instruction always writes to the G
On Wed, Feb 1, 2017 at 1:15 AM, Ingo Molnar wrote:
>
> * Thomas Garnier wrote:
>
>> This patch makes the GDT remapped pages read-only to prevent corruption.
>> This change is done only on 64 bit.
>
>>
>> - table_base = gdt->address;
>> + table_base = (unsigned long)get_current_direct_gd
* Thomas Garnier wrote:
> This patch makes the GDT remapped pages read-only to prevent corruption.
> This change is done only on 64 bit.
Please spell '64-bit' consistently through the series. I've seen two variants:
64 bit
64bit
> +/*
> + * The LTR instruction marks the TSS GDT entry as b
This patch makes the GDT remapped pages read-only to prevent corruption.
This change is done only on 64 bit.
The native_load_tr_desc function was adapted to correctly handle a
read-only GDT. The LTR instruction always writes to the GDT TSS entry.
This generates a page fault if the GDT is read-only
