lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Fri, 4 Jun 2021 20:06:14 +1000 From: Balbir Singh <bsingharora@...il.com> To: Kees Cook <keescook@...omium.org> Cc: Thomas Gleixner <tglx@...utronix.de>, "mingo@...hat.com" <mingo@...hat.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "peterz@...radead.org" <peterz@...radead.org>, "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>, "jpoimboe@...hat.com" <jpoimboe@...hat.com>, "x86@...nel.org" <x86@...nel.org>, "tony.luck@...el.com" <tony.luck@...el.com>, "dave.hansen@...el.com" <dave.hansen@...el.com>, "thomas.lendacky@....com" <thomas.lendacky@....com>, "benh@...nel.crashing.org" <benh@...nel.crashing.org>, linux-hardening@...r.kernel.org Subject: Re: [PATCH v4 0/5] Next revision of the L1D flush patches On Wed, Apr 28, 2021 at 01:08:05PM -0700, Kees Cook wrote: > On Tue, Apr 27, 2021 at 12:24:16AM +0200, Thomas Gleixner wrote: > > On Mon, Apr 26 2021 at 10:31, Thomas Gleixner wrote: > > > On Thu, Apr 08 2021 at 13:23, Kees Cook wrote: > > >> > > >> I'd still really like to see this -- it's a big hammer, but that's the > > >> point for cases where some new flaw appears and we can point to the > > >> toolbox and say "you can mitigate it with this while you wait for new > > >> kernel/CPU." > > >> > > >> Any further thoughts from x86 maintainers? This seems like it addressed > > >> all of tglx's review comments. > > > > > > Sorry for dropping the ball on this. It's in my list of things to deal > > > with. Starting to look at it now. > > > > So I went through the pile and for remorse I sat down and made the > > tweaks I think are necessary myself. > > > > I've pushed out the result to > > > > git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/l1dflush > > Oh excellent; thank you for doing this! > Thanks again Thomas! I no longer have access to the bare metal hardware, but I was able to test this under qemu with some emulation changes. The changes worked as expected. Folks on the list/cc, appreciate any tested-by or additional reviewed-by tags if you do happen to review/test. Thanks, Balbir Singh.
Powered by blists - more mailing lists