On 24.08.20 17:58, Andrew Cooper wrote:
On 24/08/2020 16:21, pet...@infradead.org wrote:
On Mon, Aug 24, 2020 at 03:22:06PM +0100, Andrew Cooper wrote:
On 24/08/2020 11:14, pet...@infradead.org wrote:
The WARN added in commit 3c73b81a9164 ("x86/entry, selftests: Further
improve user entry
On 24/08/2020 16:21, pet...@infradead.org wrote:
> On Mon, Aug 24, 2020 at 03:22:06PM +0100, Andrew Cooper wrote:
>> On 24/08/2020 11:14, pet...@infradead.org wrote:
>>> The WARN added in commit 3c73b81a9164 ("x86/entry, selftests: Further
>>> improve user entry sanity checks") unconditionally
On Mon, Aug 24, 2020 at 03:22:06PM +0100, Andrew Cooper wrote:
> On 24/08/2020 11:14, pet...@infradead.org wrote:
> > The WARN added in commit 3c73b81a9164 ("x86/entry, selftests: Further
> > improve user entry sanity checks") unconditionally triggers on my IVB
> > machine because it does not
On 24/08/2020 11:14, pet...@infradead.org wrote:
> The WARN added in commit 3c73b81a9164 ("x86/entry, selftests: Further
> improve user entry sanity checks") unconditionally triggers on my IVB
> machine because it does not support SMAP.
>
> For !SMAP hardware we patch out CLAC/STAC instructions
The WARN added in commit 3c73b81a9164 ("x86/entry, selftests: Further
improve user entry sanity checks") unconditionally triggers on my IVB
machine because it does not support SMAP.
For !SMAP hardware we patch out CLAC/STAC instructions and thus if
userspace sets AC, we'll still have it set
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