quot;
Cc: Greg Kroah-Hartman
Cc: Alexander Viro
Cc: Steven Whitehouse
Cc: Kent Overstreet
Cc: Herton Ronaldo Krzesinski
Cc: Tejun Heo
Cc: Andrew Morton
Cc: Guo Chao
Cc: Asai Thambi S P
Cc: Selvan Mani
Cc: Sam Bradshaw
Cc: Matthew Wilcox
Cc: Keith Busch
Cc: Stephen Hemminger
Cc: Quoc-Son
bcachefs's six locks need kvm_guest, via
ower_on_cpu() -> vcpu_is_preempted() -> is_kvm_guest()
Signed-off-by: Kent Overstreet
Cc: linuxppc-dev@lists.ozlabs.org
---
arch/powerpc/kernel/firmware.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/kernel/firmwa
On Thu, Sep 14, 2023 at 12:26:53PM +1000, Michael Ellerman wrote:
> Kent Overstreet writes:
> > bcachefs's six locks need kvm_guest, via
> > ower_on_cpu() -> vcpu_is_preempted() -> is_kvm_guest()
> >
> > Signed-off-by: Kent Overstreet
> > Cc: lin
On Wed, Nov 08, 2023 at 01:58:37PM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann
>
> bch2_target_to_text_sb() is only called in the file it is defined in,
> and it has no extern prototype:
>
> fs/bcachefs/disk_groups.c:583:6: error: no previous prototype for
> 'bch2_target_to_text_sb' [-Wer
On Thu, Jun 01, 2023 at 12:30:50PM +0200, Peter Zijlstra wrote:
> On Thu, Jun 01, 2023 at 01:12:56PM +0300, Mike Rapoport wrote:
>
> > +static void __init_or_module do_text_poke(void *addr, const void *opcode,
> > size_t len)
> > +{
> > + if (system_state < SYSTEM_RUNNING) {
> > + tex
On Thu, Jun 01, 2023 at 04:54:27PM +, Edgecombe, Rick P wrote:
> It is just a local flush, but I wonder how much text_poke()ing is too
> much. A lot of the are even inside loops. Can't it do the batch version
> at least?
>
> The other thing, and maybe this is in paranoia category, but it's
> p
On Thu, Jun 01, 2023 at 05:12:03PM +0100, Mark Rutland wrote:
> For a while I have wanted to give kprobes its own allocator so that it can
> work
> even with CONFIG_MODULES=n, and so that it doesn't have to waste VA space in
> the modules area.
>
> Given that, I think these should have their own
On Thu, Jun 01, 2023 at 06:13:44PM +, Edgecombe, Rick P wrote:
> > text_poke() _does_ create a separate RW mapping.
>
> Sorry, I meant a separate RW allocation.
Ah yes, that makes sense
>
> >
> > The thing that sucks about text_poke() is that it always does a full
> > TLB
> > flush, and A
On Fri, Jun 02, 2023 at 11:20:58AM -0700, Song Liu wrote:
> IIUC, arm64 uses VMALLOC address space for BPF programs. The reason
> is each BPF program uses at least 64kB (one page) out of the 128MB
> address space. Puranjay Mohan (CC'ed) is working on enabling
> bpf_prog_pack for arm64. Once this wo
On Thu, Jun 01, 2023 at 08:50:39PM +, Edgecombe, Rick P wrote:
> > Ahh! Thanks for that; perhaps the comment in text_poke() about IPIs
> > could be a bit clearer.
> >
> > What is it (if anything) you don't like about text_poke() then? It
> > looks
> > like it's doing broadly similar things to
On Sun, Jun 04, 2023 at 02:22:30PM -0700, Song Liu wrote:
> On Sun, Jun 4, 2023 at 11:02 AM Kent Overstreet
> wrote:
> >
> > On Fri, Jun 02, 2023 at 11:20:58AM -0700, Song Liu wrote:
> > > IIUC, arm64 uses VMALLOC address space for BPF programs. The reason
> > &g
On Mon, Jun 05, 2023 at 12:20:40PM +0300, Mike Rapoport wrote:
> On Fri, Jun 02, 2023 at 10:35:09AM +0100, Mark Rutland wrote:
> > On Thu, Jun 01, 2023 at 02:14:56PM -0400, Kent Overstreet wrote:
> > > On Thu, Jun 01, 2023 at 05:12:03PM +0100, Mark Rutland wrote:
> > >
On Thu, Jun 08, 2023 at 09:41:16PM +0300, Mike Rapoport wrote:
> On Tue, Jun 06, 2023 at 11:21:59AM -0700, Song Liu wrote:
> > On Mon, Jun 5, 2023 at 3:09 AM Mark Rutland wrote:
> >
> > [...]
> >
> > > > > > Can you give more detail on what parameters you need? If the only
> > > > > > extra
> >
ke data sections of a module will use
> execmem_data_alloc() interface that will be added later.
I like the API split - at the risk of further bikeshedding, perhaps
near_text_alloc() and far_text_alloc()? Would be more explicit.
Reviewed-by: Kent Overstreet
On Sat, Jun 17, 2023 at 09:57:59AM +0300, Mike Rapoport wrote:
> > This is growing fast. :) We have 3 now: text, data, jit. And it will be
> > 5 when we split data into rw data, ro data, ro after init data. I wonder
> > whether we should still do some type enum here. But we can revisit
> > this top
On Sat, Jun 17, 2023 at 09:38:17AM -0700, Song Liu wrote:
> On Sat, Jun 17, 2023 at 8:37 AM Kent Overstreet
> wrote:
> >
> > On Sat, Jun 17, 2023 at 09:57:59AM +0300, Mike Rapoport wrote:
> > > > This is growing fast. :) We have 3 now: text, data, jit. And it will b
On Mon, Jun 19, 2023 at 12:32:55AM +0200, Thomas Gleixner wrote:
> Mike!
>
> Sorry for being late on this ...
>
> On Fri, Jun 16 2023 at 11:50, Mike Rapoport wrote:
> >
> > +void *execmem_data_alloc(size_t size)
> > +{
> > + unsigned long start = execmem_params.modules.data.start;
> > + uns
On Mon, Jun 19, 2023 at 02:43:58AM +0200, Thomas Gleixner wrote:
> Kent!
Hi Thomas :)
> No. I am not.
Ok.
> Whether that's an internal function or not does not make any difference
> at all.
Well, at the risk of this discussion going completely off the rails, I
have to disagree with you there.
On Sat, Jun 17, 2023 at 01:38:29PM -0700, Andy Lutomirski wrote:
> On Fri, Jun 16, 2023, at 1:50 AM, Mike Rapoport wrote:
> > From: "Mike Rapoport (IBM)"
> >
> > module_alloc() is used everywhere as a mean to allocate memory for code.
> >
> > Beside being semantically wrong, this unnecessarily tie
On Sun, Jun 25, 2023 at 08:42:57PM +0300, Mike Rapoport wrote:
> On Sun, Jun 25, 2023 at 09:59:34AM -0700, Andy Lutomirski wrote:
> >
> >
> > On Sun, Jun 25, 2023, at 9:14 AM, Mike Rapoport wrote:
> > > On Mon, Jun 19, 2023 at 10:09:02AM -0700, Andy Lutomirski wrote:
> > >>
> > >> On Sun, Jun 18
On Thu, Sep 01, 2022 at 10:35:11AM -0700, Suren Baghdasaryan wrote:
> Set ARCH_SUPPORTS_PER_VMA_LOCK so that the per-VMA lock support can be
> compiled on this architecture.
>
> Signed-off-by: Suren Baghdasaryan
> ---
> arch/x86/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/a
On Thu, Sep 01, 2022 at 10:34:52AM -0700, Suren Baghdasaryan wrote:
> Move mmap_lock assert function definitions up so that they can be used
> by other mmap_lock routines.
>
> Signed-off-by: Suren Baghdasaryan
> ---
> include/linux/mmap_lock.h | 24
> 1 file changed, 12
it should
be mentioned in the commit message that that's what you're doing and why it's
safe, because it's not exactly common knowledge and lockless stuff deserves
extra scrutiny.
Probably worth a comment, too.
Reviewed-by: Kent Overstreet
On Thu, Sep 01, 2022 at 10:34:48AM -0700, Suren Baghdasaryan wrote:
> Resending to fix the issue with the In-Reply-To tag in the original
> submission at [4].
>
> This is a proof of concept for per-vma locks idea that was discussed
> during SPF [1] discussion at LSF/MM this year [2], which conclud
On Mon, Sep 05, 2022 at 11:32:48AM -0700, Suren Baghdasaryan wrote:
> On Mon, Sep 5, 2022 at 5:32 AM 'Michal Hocko' via kernel-team
> wrote:
> >
> > Unless I am missing something, this is not based on the Maple tree
> > rewrite, right? Does the change in the data structure makes any
> > difference
On Fri, Feb 23, 2024 at 01:46:53PM -0500, Steven Rostedt wrote:
> On Fri, 23 Feb 2024 10:30:45 -0800
> Jeff Johnson wrote:
>
> > On 2/23/2024 9:56 AM, Steven Rostedt wrote:
> > > From: "Steven Rostedt (Google)"
> > >
> > > [
> > >This is a treewide change. I will likely re-create this patch
On Thu, Apr 11, 2024 at 07:00:36PM +0300, Mike Rapoport wrote:
> From: "Mike Rapoport (IBM)"
>
> Hi,
>
> Since v3 I looked into making execmem more of an utility toolbox, as we
> discussed at LPC with Mark Rutland, but it was getting more hairier than
> having a struct describing architecture co
This converts from seq_buf to printbuf. We're using printbuf in external
buffer mode, so it's a direct conversion, aside from some trivial
refactoring in cpu_show_meltdown() to make the code more consistent.
Signed-off-by: Kent Overstreet
Cc: linuxppc-dev@lists.ozlabs.org
---
ar
This converts from seq_buf to printbuf. We're using printbuf in external
buffer mode, so it's a direct conversion, aside from some trivial
refactoring in cpu_show_meltdown() to make the code more consistent.
Signed-off-by: Kent Overstreet
Cc: linuxppc-dev@lists.ozlabs.org
---
ar
This converts from seq_buf to printbuf. We're using printbuf in external
buffer mode, so it's a direct conversion, aside from some trivial
refactoring in cpu_show_meltdown() to make the code more consistent.
Signed-off-by: Kent Overstreet
Cc: linuxppc-dev@lists.ozlabs.org
---
ar
From: Kent Overstreet
This converts from seq_buf to printbuf. We're using printbuf in external
buffer mode, so it's a direct conversion, aside from some trivial
refactoring in cpu_show_meltdown() to make the code more consistent.
Signed-off-by: Kent Overstreet
Cc: linuxppc-dev@lists.
ntroduce struct chacha_state:
>
> struct chacha_state {
> u32 x[16];
> };
>
> Convert all ChaCha and HChaCha functions to use struct chacha_state.
> No functional changes.
>
> Signed-off-by: Eric Biggers
Acked-by: Kent Overstreet
> ---
> ar
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