On Wed, Feb 15, 2023 at 08:59:18PM -0800, Vineet Gupta wrote:
> On 2/10/23 09:06, Matthew Wilcox wrote:
> > I see a discrepancy here ...
> >
> > arch/arc/include/asm/shmparam.h:
> > /* Handle upto 2 cache bins */
> > #define SHMLBA (2 * PAGE_SIZE)
> >
> > arch/arc/include/asm/cacheflush.h:
> > #
The x86 Control-flow Enforcement Technology (CET) feature includes a new
type of memory called shadow stack. This shadow stack memory has some
unusual properties, which requires some core mm changes to function
properly.
One of these unusual properties is that shadow stack memory is writable,
but