Re: 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...
View ArticleRe: [PATCH 11/23] kconfig: add 'shell-stdout' function
Linus Torvalds writes: (Summary) The rule would be very simple: - if the result of the shell command is a failure, the result is 'n' - otherwise, the result is the first line of stdout - if the result...
View ArticleRe: [RFC][PATCH] x86: proposed new ARCH_CAPABILITIES MSR bit for R ...
Linus Torvalds writes: (Summary) So it might actually be even better with _two_ bits: "explicitly needs RSB stuffing" and "explicitly fixed and does _not_ need RSB stuffing". And then if neither bit it...
View ArticleRe: [RFC][PATCH] x86: proposed new ARCH_CAPABILITIES MSR bit for R ...
Linus Torvalds writes: (Summary) Who knows, virtualization people may simply want the user to specify the model, but then make the Spectre decisions be based on actual hardware capabilities (whether...
View ArticleRe: [PATCH 4/4] fs/dcache: Avoid the try_lock loops in dentry_kill()
Linus Torvalds writes: (Summary) wrote: [...] d_prune_aliases(), for example. What are you talking about? What are you talking about? lock_parent() does the nice "spin_trylock succeeded" special case....
View ArticleRe: [PATCH 4/4] fs/dcache: Avoid the try_lock loops in dentry_kill()
Linus Torvalds writes: (Summary) You can't just move the trylock into the caller, since then you need to move all the other stuff too? to move all the other stuff too? Or were you planning on splitting...
View ArticleRe: [PATCH 4/4] fs/dcache: Avoid the try_lock loops in dentry_kill()
Linus Torvalds writes: (Summary) wrote: [...] would know if they needed to recheck the dentry contents. So you'd have to add another way to say "didn't need to drop dentry lock". And then your...
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