| Date | Mon, 16 Nov 2020 21:17:11 +0100 | From | Borislav Petkov <> | Subject | Re: [RFC][PATCH v2 00/21] x86/pti: Defer CR3 switch to C code |
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On Mon, Nov 16, 2020 at 03:47:36PM +0100, Alexandre Chartre wrote: > This RFC proposes to defer the PTI CR3 switch until we reach C code. > The benefit is that this simplifies the assembly entry code, and make > the PTI CR3 switch code easier to understand. This also paves the way > for further possible projects such an easier integration of Address > Space Isolation (ASI), or the possibilily to execute some selected > syscall or interrupt handlers without switching to the kernel page-table
What for? What is this going to be used for in the end?
> (and thus avoid the PTI page-table switch overhead).
Overhead of how much? Why do we care?
What is the big picture justfication for this diffstat
> 21 files changed, 874 insertions(+), 314 deletions(-)
and the diffstat for the ASI enablement?
Thx.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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