On Tue, 16 Mar 2021 at 10:21, Thomas Backlund <tmb@xxxxxx> wrote: > > Den 16.3.2021 kl. 08:37, skrev Ard Biesheuvel: > > Please consider backporting commit > > > > 86ad60a65f29dd862a11c22bb4b5be28d6c5cef1 > > crypto: x86/aes-ni-xts - use direct calls to and 4-way stride > > > > to stable. It addresses a rather substantial retpoline-related > > performance regression in the AES-NI XTS code, which is a widely used > > disk encryption algorithm on x86. > > > > To get all the nice bits, we added the following in Mageia 5.10 / 5.11 > series kerenels (the 2 first is needed to get the third to apply/build > nicely): > I will leave it up to the -stable maintainers to decide, but I will point out that none of the additional patches fix any bugs, so this may violate the stable kernel rules. In fact, I deliberately split the XTS changes into two patches so that the first one could be backported individually. -- Ard. > applied in this order: > > From 032d049ea0f45b45c21f3f02b542aa18bc6b6428 Mon Sep 17 00:00:00 2001 > From: Uros Bizjak <ubizjak@xxxxxxxxx> > Date: Fri, 27 Nov 2020 10:44:52 +0100 > Subject: [PATCH] crypto: aesni - Use TEST %reg,%reg instead of CMP $0,%reg > > From ddf169a98f01d6fd46295ec0dd4c1d6385be65d4 Mon Sep 17 00:00:00 2001 > From: Ard Biesheuvel <ardb@xxxxxxxxxx> > Date: Tue, 8 Dec 2020 00:34:02 +0100 > Subject: [PATCH] crypto: aesni - implement support for cts(cbc(aes)) > > From 86ad60a65f29dd862a11c22bb4b5be28d6c5cef1 Mon Sep 17 00:00:00 2001 > From: Ard Biesheuvel <ardb@xxxxxxxxxx> > Date: Thu, 31 Dec 2020 17:41:54 +0100 > Subject: [PATCH] crypto: x86/aes-ni-xts - use direct calls to and 4-way > stride > > From 2481104fe98d5b016fdd95d649b1235f21e491ba Mon Sep 17 00:00:00 2001 > From: Ard Biesheuvel <ardb@xxxxxxxxxx> > Date: Thu, 31 Dec 2020 17:41:55 +0100 > Subject: [PATCH] crypto: x86/aes-ni-xts - rewrite and drop indirections > via glue helper > > -- > Thomas >
