On Sun, Feb 07, 2021 at 09:24:23AM +0100, Dmitry Vyukov wrote:
> On Fri, Feb 5, 2021 at 4:16 PM Kirill A. Shutemov
> wrote:
> >
> > Linear Address Masking[1] (LAM) modifies the checking that is applied to
> > 64-bit linear addresses, allowing software to use of the untranslated
> > address bits
On Fri, Feb 5, 2021 at 4:16 PM Kirill A. Shutemov
wrote:
>
> Linear Address Masking[1] (LAM) modifies the checking that is applied to
> 64-bit linear addresses, allowing software to use of the untranslated
> address bits for metadata.
>
> The patchset brings support for LAM for userspace
On Fri, Feb 05, 2021 at 06:16:20PM +0300, Kirill A. Shutemov wrote:
> The feature competes for bits with 5-level paging: LAM_U48 makes it
> impossible to map anything about 47-bits. The patchset made these
> capability mutually exclusive: whatever used first wins. LAM_U57 can be
> combined with
On Fri, Feb 05, 2021 at 04:49:05PM +0100, Peter Zijlstra wrote:
> On Fri, Feb 05, 2021 at 06:16:20PM +0300, Kirill A. Shutemov wrote:
> > The feature competes for bits with 5-level paging: LAM_U48 makes it
> > impossible to map anything about 47-bits. The patchset made these
> > capability
On Fri, Feb 05, 2021 at 07:01:27PM +0300, Kirill A. Shutemov wrote:
> On Fri, Feb 05, 2021 at 04:49:05PM +0100, Peter Zijlstra wrote:
> > On Fri, Feb 05, 2021 at 06:16:20PM +0300, Kirill A. Shutemov wrote:
> > > The feature competes for bits with 5-level paging: LAM_U48 makes it
> > > impossible
Linear Address Masking[1] (LAM) modifies the checking that is applied to
64-bit linear addresses, allowing software to use of the untranslated
address bits for metadata.
The patchset brings support for LAM for userspace addresses.
The most sensitive part of enabling is change in tlb.c, where CR3
6 matches
Mail list logo
