* [GIT PULL] parisc updates for v3.14
@ 2014-02-01 20:23 Helge Deller
2014-02-01 21:06 ` Richard Weinberger
0 siblings, 1 reply; 6+ messages in thread
From: Helge Deller @ 2014-02-01 20:23 UTC (permalink / raw)
To: Linus Torvalds, linux-kernel, linux-parisc, James Bottomley
Hi Linus,
please pull the latest updates for the parisc architecture from:
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git parisc-for-3.14
The three major changes in this patchset is a implementation for flexible
userspace memory maps, cache-flushing fixes (again), and a long-discussed ABI
change to make EWOULDBLOCK the same value as EAGAIN.
parisc has been the only platform where we had EWOULDBLOCK != EAGAIN to keep
HP-UX compatibility. Since we will probably never implement full HP-UX
support, we prefer to drop this compatibility to make it easier for us with
Linux userspace programs which mostly never checked for both values. We don't
expect major fall-outs because of this change, and if we face some, we will
simply rebuild the necessary applications in the debian archives.
The change to fs/exec.c only touches code which affects parisc since it's
inside a #ifdef CONFIG_STACK_GROWSUP section (and parisc is the only platform
where the stack grows upwards).
Thanks,
Helge
----------------------------------------------------------------
Guy Martin (1):
parisc: Make EWOULDBLOCK be equal to EAGAIN on parisc
Helge Deller (5):
parisc/sti_console: prefer Linux fonts over built-in ROM fonts
parisc: fix cache-flushing
parisc: add flexible mmap memory layout support
parisc: wire up sched_setattr and sched_getattr
parisc: convert uapi/asm/stat.h to use native types only
arch/parisc/include/asm/cacheflush.h | 2 -
arch/parisc/include/asm/elf.h | 7 +
arch/parisc/include/asm/page.h | 3 +-
arch/parisc/include/asm/pgtable.h | 1 +
arch/parisc/include/asm/processor.h | 2 +
arch/parisc/include/asm/thread_info.h | 10 ++
arch/parisc/include/uapi/asm/errno.h | 2 +-
arch/parisc/include/uapi/asm/stat.h | 40 +++---
arch/parisc/include/uapi/asm/unistd.h | 4 +-
arch/parisc/kernel/cache.c | 14 ++
arch/parisc/kernel/process.c | 21 ++-
arch/parisc/kernel/sys_parisc.c | 238 ++++++++++++++++++++++++++++------
arch/parisc/kernel/syscall_table.S | 2 +
drivers/video/console/sticore.c | 2 +-
fs/exec.c | 3 +
lib/fonts/Kconfig | 6 +-
16 files changed, 284 insertions(+), 73 deletions(-)
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [GIT PULL] parisc updates for v3.14
2014-02-01 20:23 [GIT PULL] parisc updates for v3.14 Helge Deller
@ 2014-02-01 21:06 ` Richard Weinberger
2014-02-02 11:15 ` Helge Deller
0 siblings, 1 reply; 6+ messages in thread
From: Richard Weinberger @ 2014-02-01 21:06 UTC (permalink / raw)
To: Helge Deller; +Cc: Linus Torvalds, LKML, linux-parisc, James Bottomley
On Sat, Feb 1, 2014 at 9:23 PM, Helge Deller <deller@gmx.de> wrote:
> Hi Linus,
>
> please pull the latest updates for the parisc architecture from:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git parisc-for-3.14
>
> The three major changes in this patchset is a implementation for flexible
> userspace memory maps, cache-flushing fixes (again), and a long-discussed ABI
> change to make EWOULDBLOCK the same value as EAGAIN.
>
> parisc has been the only platform where we had EWOULDBLOCK != EAGAIN to keep
> HP-UX compatibility. Since we will probably never implement full HP-UX
> support, we prefer to drop this compatibility to make it easier for us with
> Linux userspace programs which mostly never checked for both values. We don't
> expect major fall-outs because of this change, and if we face some, we will
> simply rebuild the necessary applications in the debian archives.
>
> The change to fs/exec.c only touches code which affects parisc since it's
> inside a #ifdef CONFIG_STACK_GROWSUP section (and parisc is the only platform
> where the stack grows upwards).
What about metag?
> Thanks,
> Helge
>
> ----------------------------------------------------------------
> Guy Martin (1):
> parisc: Make EWOULDBLOCK be equal to EAGAIN on parisc
>
> Helge Deller (5):
> parisc/sti_console: prefer Linux fonts over built-in ROM fonts
> parisc: fix cache-flushing
> parisc: add flexible mmap memory layout support
> parisc: wire up sched_setattr and sched_getattr
> parisc: convert uapi/asm/stat.h to use native types only
>
> arch/parisc/include/asm/cacheflush.h | 2 -
> arch/parisc/include/asm/elf.h | 7 +
> arch/parisc/include/asm/page.h | 3 +-
> arch/parisc/include/asm/pgtable.h | 1 +
> arch/parisc/include/asm/processor.h | 2 +
> arch/parisc/include/asm/thread_info.h | 10 ++
> arch/parisc/include/uapi/asm/errno.h | 2 +-
> arch/parisc/include/uapi/asm/stat.h | 40 +++---
> arch/parisc/include/uapi/asm/unistd.h | 4 +-
> arch/parisc/kernel/cache.c | 14 ++
> arch/parisc/kernel/process.c | 21 ++-
> arch/parisc/kernel/sys_parisc.c | 238 ++++++++++++++++++++++++++++------
> arch/parisc/kernel/syscall_table.S | 2 +
> drivers/video/console/sticore.c | 2 +-
> fs/exec.c | 3 +
> lib/fonts/Kconfig | 6 +-
> 16 files changed, 284 insertions(+), 73 deletions(-)
> --
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Thanks,
//richard
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [GIT PULL] parisc updates for v3.14
2014-02-01 21:06 ` Richard Weinberger
@ 2014-02-02 11:15 ` Helge Deller
2014-02-02 19:28 ` Linus Torvalds
0 siblings, 1 reply; 6+ messages in thread
From: Helge Deller @ 2014-02-02 11:15 UTC (permalink / raw)
To: Richard Weinberger, Linux Kernel, linux-parisc, James Bottomley,
James Hogan, linux-metag
Cc: Helge Deller, Linus Torvalds
* Richard Weinberger <richard.weinberger@gmail.com>:
> On Sat, Feb 1, 2014 at 9:23 PM, Helge Deller <deller@gmx.de> wrote:
> > please pull the latest updates for the parisc architecture from:
> >
> > git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git parisc-for-3.14
> >
> > The three major changes in this patchset is a implementation for flexible
> > userspace memory maps, ....
> >
> > The change to fs/exec.c only touches code which affects parisc since it's
> > inside a #ifdef CONFIG_STACK_GROWSUP section (and parisc is the only platform
> > where the stack grows upwards).
>
> What about metag?
Great! I didn't know that we now have another platform where the stack
grows upwards! Now we are not alone in this regard!
Anyway, the suggested & untested patch below should fix the metag arch
to cope which my changes to fs/exec.c (unless the metag people want to
implement proper stack randomization too). Either I can push it via the
parisc tree, or you can take it via the metag tree. Please let me know.
> > Helge Deller (5):
> > parisc: add flexible mmap memory layout support
> > ...
> > fs/exec.c | 3 +
(see:
http://git.kernel.org/cgit/linux/kernel/git/deller/parisc-linux.git/commit/?h=for-next&id=13de8ec38997357c9865a36a587439d9c5678932 )
[PATCH] metag: define STACK_RND_MASK as -1
Signed-off-by: Helge Deller <deller@gmx.de>
diff --git a/arch/metag/include/asm/elf.h b/arch/metag/include/asm/elf.h
index d2baf69..089e37a 100644
--- a/arch/metag/include/asm/elf.h
+++ b/arch/metag/include/asm/elf.h
@@ -100,7 +100,7 @@ typedef unsigned long elf_fpregset_t;
#define ELF_PLATFORM (NULL)
-#define STACK_RND_MASK (0)
+#define STACK_RND_MASK (-1)
#ifdef CONFIG_METAG_USER_TCM
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [GIT PULL] parisc updates for v3.14
2014-02-02 11:15 ` Helge Deller
@ 2014-02-02 19:28 ` Linus Torvalds
2014-02-02 20:20 ` [GIT PULL] parisc updates for v3.14 (new pull request) Helge Deller
0 siblings, 1 reply; 6+ messages in thread
From: Linus Torvalds @ 2014-02-02 19:28 UTC (permalink / raw)
To: Helge Deller
Cc: Richard Weinberger, Linux Kernel, Parisc List, James Bottomley,
James Hogan, linux-metag
On Sun, Feb 2, 2014 at 3:15 AM, Helge Deller <deller@gmx.de> wrote:
>
> Anyway, the suggested & untested patch below should fix the metag arch
> to cope which my changes to fs/exec.c
> ...
> -#define STACK_RND_MASK (0)
> +#define STACK_RND_MASK (-1)
I don't think that works. That completely breaks randomize_stack_top().
So I'm not going to pull the parisc tree, this needs to be resolved sanely.
In fact, I think that change to fs/exec.c is just completely broken:
+ /* add some more stack size for stack randomization */
+ stack_base += STACK_RND_MASK + 1;
and that "+1" just doesn't make sense, and fundamentally breaks STACK_RND_MASK.
It also seems to be entirely pointless, since the PAGE_ALIGN() that
comes right afterwards will effectively do it anyway.
So NAK on that whole fs/exec.c change. Afaik it's just wrong, and it's stupid.
Linus
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [GIT PULL] parisc updates for v3.14 (new pull request)
2014-02-02 19:28 ` Linus Torvalds
@ 2014-02-02 20:20 ` Helge Deller
0 siblings, 0 replies; 6+ messages in thread
From: Helge Deller @ 2014-02-02 20:20 UTC (permalink / raw)
To: Linus Torvalds, linux-kernel, linux-parisc, James Bottomley
Cc: Helge Deller, Richard Weinberger, James Hogan, linux-metag
Hi Linus,
* Linus Torvalds <torvalds@linux-foundation.org>:
> On Sun, Feb 2, 2014 at 3:15 AM, Helge Deller <deller@gmx.de> wrote:
> >
> > Anyway, the suggested & untested patch below should fix the metag arch
> > to cope which my changes to fs/exec.c
> > ...
> > -#define STACK_RND_MASK (0)
> > +#define STACK_RND_MASK (-1)
>
> I don't think that works. That completely breaks randomize_stack_top().
> So I'm not going to pull the parisc tree, this needs to be resolved sanely.
> In fact, I think that change to fs/exec.c is just completely broken:
> + /* add some more stack size for stack randomization */
> + stack_base += STACK_RND_MASK + 1;
> and that "+1" just doesn't make sense, and fundamentally breaks STACK_RND_MASK.
> It also seems to be entirely pointless, since the PAGE_ALIGN() that
> comes right afterwards will effectively do it anyway.
>
> So NAK on that whole fs/exec.c change. Afaik it's just wrong, and it's stupid.
You are completely right - I have no idea what I was thinking.
I have removed completely the changes to fs/exec.c, built up a new
tree for you to pull and boot-tested it with 32- and 64bit parisc kernels.
Can you please consider pulling this new tree?
The full request follows here:
-------
Hi Linus,
please pull the latest updates for the parisc architecture from:
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git parisc-3.14
The three major changes in this patchset is a implementation for
flexible userspace memory maps, cache-flushing fixes (again), and a
long-discussed ABI change to make EWOULDBLOCK the same value as EAGAIN.
parisc has been the only platform where we had EWOULDBLOCK != EAGAIN to
keep HP-UX compatibility. Since we will probably never implement full
HP-UX support, we prefer to drop this compatibility to make it easier
for us with Linux userspace programs which mostly never checked for both
values. We don't expect major fall-outs because of this change, and if
we face some, we will simply rebuild the necessary applications in the
debian archives.
Thanks,
Helge
----------------------------------------------------------------
Guy Martin (1):
parisc: Make EWOULDBLOCK be equal to EAGAIN on parisc
Helge Deller (5):
parisc/sti_console: prefer Linux fonts over built-in ROM fonts
parisc: fix cache-flushing
parisc: wire up sched_setattr and sched_getattr
parisc: convert uapi/asm/stat.h to use native types only
parisc: add flexible mmap memory layout support
arch/parisc/include/asm/cacheflush.h | 2 -
arch/parisc/include/asm/elf.h | 4 +
arch/parisc/include/asm/page.h | 3 +-
arch/parisc/include/asm/pgtable.h | 1 +
arch/parisc/include/asm/processor.h | 2 +
arch/parisc/include/asm/thread_info.h | 10 ++
arch/parisc/include/uapi/asm/errno.h | 2 +-
arch/parisc/include/uapi/asm/stat.h | 40 +++---
arch/parisc/include/uapi/asm/unistd.h | 4 +-
arch/parisc/kernel/cache.c | 14 ++
arch/parisc/kernel/process.c | 21 ++-
arch/parisc/kernel/sys_parisc.c | 238 ++++++++++++++++++++++++++++------
arch/parisc/kernel/syscall_table.S | 2 +
drivers/video/console/sticore.c | 2 +-
lib/fonts/Kconfig | 6 +-
15 files changed, 278 insertions(+), 73 deletions(-)
^ permalink raw reply [flat|nested] 6+ messages in thread
* [GIT PULL] parisc updates for v3.14
@ 2014-03-23 21:02 Helge Deller
0 siblings, 0 replies; 6+ messages in thread
From: Helge Deller @ 2014-03-23 21:02 UTC (permalink / raw)
To: Linus Torvalds, linux-kernel, linux-parisc, James Bottomley
Hi Linus,
please consider pulling some late patches for the parisc architecture from:
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git parisc-3.14
This patchset
- reverts parts of my latest patch regarding font selection with STICON console,
- wires up the utimes() syscall for parisc, and
- removes the unused parisc tmpalias code and unnecessary arch*relax defines
Thanks,
Helge
----------------------------------------------------------------
Helge Deller (2):
partly revert commit 8a10bc9: parisc/sti_console: prefer Linux fonts over built-in ROM fonts
parisc: wire up sys_utimes
John David Anglin (1):
parisc: Remove unused CONFIG_PARISC_TMPALIAS code
Will Deacon (1):
parisc: locks: remove redundant arch_*_relax operations
arch/parisc/include/asm/page.h | 11 ------
arch/parisc/include/asm/spinlock.h | 4 ---
arch/parisc/include/uapi/asm/unistd.h | 4 +--
arch/parisc/kernel/cache.c | 64 -----------------------------------
arch/parisc/kernel/syscall_table.S | 1 +
lib/fonts/Kconfig | 6 ++--
6 files changed, 6 insertions(+), 84 deletions(-)
^ permalink raw reply [flat|nested] 6+ messages in thread
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2014-02-01 20:23 [GIT PULL] parisc updates for v3.14 Helge Deller
2014-02-01 21:06 ` Richard Weinberger
2014-02-02 11:15 ` Helge Deller
2014-02-02 19:28 ` Linus Torvalds
2014-02-02 20:20 ` [GIT PULL] parisc updates for v3.14 (new pull request) Helge Deller
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2014-03-23 21:02 [GIT PULL] parisc updates for v3.14 Helge Deller
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