Re: [tip:x86/pti] x86/entry/64: Introduce the PUSH_AND_CLEAN_REGS ...
Linus Torvalds writes: (Summary) On Mon, Feb 12, 2018 at 5:29 AM, Denys Vlasenko <dvlasenk@redhat.com> wrote: [...] I propose using xorl instead. Makes sense, and matches the other 'xorl'. Makes...
View ArticleRe: [PATCH v3 8/7] TESTING_ONLY x86/entry: reduce static footprint ...
Linus Torvalds writes: (Summary) Look at the "interrupt" macro, which is used by 'apicinterrupt3', and has a number of uses that way. has a number of uses that way. That code could be unified a lot,...
View ArticleRe: linux-next: unnecessary merge in the v4l-dvb tree
Linus Torvalds writes: (Summary) wrote: [...] signed tag (I forget the reasoning). The reasoning is to avoid losing the signature from the tag (when merging a signed tag, the signature gets inserted...
View ArticleRe: linux-next: unnecessary merge in the v4l-dvb tree
Linus Torvalds writes: (Summary) I think the commit that actually introduced the behavior was I think the commit that actually introduced the behavior was fab47d057: merge: force edit and no-ff mode...
View ArticleRe: linux-next: unnecessary merge in the v4l-dvb tree
Linus Torvalds writes: (Summary) wrote: [...] grabbing from branch tips, not tags? I'm actually encouraging maintainers to *not* start their work on some random "kernel of the day". random "kernel of...
View ArticleRe: [PATCH 00/31 v2] PTI support for x86_32
Linus Torvalds writes: (Summary) It used to be autofs (I actually added that whole "packetized pipe" model just to make automount "just w ork" even though the stupid protocol used a pipe to send...
View ArticleRe: linux-next: unnecessary merge in the v4l-dvb tree
Linus Torvalds writes: (Summary) On Tue, Feb 13, 2018 at 9:18 AM, Junio C Hamano <gitster@pobox.com> Yes, that sounds like the right thing to do. Oooh. Yes, that sounds like the right thing to...
View ArticleRe: clang asm-goto support (Was Re: [PATCH v2] x86/retpoline: Add ...
Linus Torvalds writes: (Summary) wrote: [...] extension of it. Side note: one thing that limits "asm goto" in gcc is the fact that you can't have outputs. you can't have outputs. If clang people are...
View ArticleRe: clang asm-goto support (Was Re: [PATCH v2] x86/retpoline: Add ...
Linus Torvalds writes: (Summary) wrote: [...] do runtime branch patching. Side note: I have a patch to the user access code to do "asm goto" for the exception handling too. the exception handling too....
View ArticleRe: [GIT PULL] SCSI fixes for 4.16-rc1
Linus Torvalds writes: On Wed, Feb 14, 2018 at 12:28 PM, James Bottomley<James.Bottomley@hansenpartnership.com> wrote: [...] a new pull request next week. Ok, dropped. Ok, dropped. Linus Linus Linus
View ArticleRe: [PATCH] x86, nospec: Fix uninitialized mask in array_index_mas ...
Linus Torvalds writes: (Summary) wrote: [...] of (0 - 0 - CARRY). NAK. NAK. This is stupid. This is stupid. Any asm tools that think this is "uninitialized inline asm arguments" are complete garbage....
View ArticleRe: [GIT PULL] x86 PTI and Spectre related fixes and updates
Linus Torvalds writes: (Summary) On Wed, Feb 14, 2018 at 4:38 PM, Ingo Molnar <mingo@kernel.org> wrote: [...] This tree generates two relatively simple conflicts with your tree: So what annoys me...
View ArticleRe: [GIT PULL] x86 PTI and Spectre related fixes and updates
Linus Torvalds writes: On Wed, Feb 14, 2018 at 9:48 PM, Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote:[...] do that, or you do :) Ok, as long as it helps something, I'm ok with it. I was...
View ArticleRe: [PATCH 0/3] Use global pages with PTI
Linus Torvalds writes: (Summary) Odd, I have this distinct memory of somebody even _testing_ the global bit performance when I pointed out that we shouldn't just make the bit go away entirely. the bit...
View ArticleRe: [PATCH] linux/nospec.h: allow index argument to have const-qua ...
Linus Torvalds writes: (Summary) HOWEVER, even then it's wrong, because if "size" is of a signed type, the check in WARN_ONCE is pure garbage. the check in WARN_ONCE is pure garbage. To make matters...
View ArticleRe: [PATCH] linux/nospec.h: allow index argument to have const-qua ...
Linus Torvalds writes: (Summary) Here's a test: run a 32-bit kernel, and then do an ioctl() or something with a negative fd. something with a negative fd. What I think will happen is: What I think will...
View ArticleRe: [PATCH RFC v2 4/6] x86: Disable PTI on compatibility mode
Linus Torvalds writes: (Summary) But even with just one thread, I'm not seeing how you keep user mode from going from compatibility mode to L mode with just a far jump. compatibility mode to L mode...
View ArticleRe: [PATCH RFC v2 4/6] x86: Disable PTI on compatibility mode
Linus Torvalds writes: (Summary) On Thu, Feb 15, 2018 at 4:22 PM, Nadav Amit <nadav.amit@gmail.com> wrote: [...] the work. Sure, I can see it working, but it's some really shady stuff, and now...
View ArticleRe: [PATCH] mm: hide a #warning for COMPILE_TEST
Linus Torvalds writes: On Fri, Feb 16, 2018 at 7:25 AM, Arnd Bergmann <arnd@arndb.de> wrote: [...] is set. Ack, looks sane, so I just applied it directly to my tree instead of waiting for this to...
View ArticleRe: [PATCH 4/4] fs/dcache: Avoid the try_lock loops in dentry_kill()
Linus Torvalds writes: (Summary) wrote: [...] Trylock loops are problematic in two scenarios: I don't mind this patch series per se (although I would really like Al to ack it), but this particular...
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