On 9/23/20 9:40 AM, Cédric Le Goater wrote:
> When a passthrough IO adapter is removed from a pseries machine using
> hash MMU and the XIVE interrupt mode, the POWER hypervisor expects the
> guest OS to clear all page table entries related to the adapter. If
> some are still present, the RTAS call
On Thu, Sep 24, 2020 at 05:03:11PM +1000, Alexey Kardashevskiy wrote:
> May be... The current behavior is not wrong (after the fix) but not
> optimal either. Even with legacy PCI it should just result in failing
> attempt to set 64bit mask which drivers should still handle, i.e. choose
> a shorter
There is no compat_sys_readv64v2 syscall, only a compat_sys_preadv64v2
one.
Signed-off-by: Christoph Hellwig
---
include/linux/compat.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/compat.h b/include/linux/compat.h
index b354ce58966e2d..654c1ec36671a4 100644
From: David Laight
This lets the compiler inline it into import_iovec() generating
much better code.
Signed-off-by: David Laight
Signed-off-by: Christoph Hellwig
---
fs/read_write.c | 179
lib/iov_iter.c | 176
Split rw_copy_check_uvector into two new helpers with more sensible
calling conventions:
- iovec_from_user copies a iovec from userspace either into the provided
stack buffer if it fits, or allocates a new buffer for it. Returns
the actually used iovec. It also verifies that iov_len does
Now that import_iovec handles compat iovecs, the native version of
keyctl_instantiate_key_iov can be used for the compat case as well.
Signed-off-by: Christoph Hellwig
---
security/keys/compat.c | 36 ++--
security/keys/internal.h | 5 -
Hi Al,
this series changes import_iovec to transparently deal with compat iovec
structures, and then cleanups up a lot of code dupliation.
Changes since v3:
- fix up changed prototypes in compat.h as well
Changes since v2:
- revert the switch of the access process vm sysclls to iov_iter
-
Now that import_iovec handles compat iovecs, the native vmsplice syscall
can be used for the compat case as well.
Signed-off-by: Christoph Hellwig
---
arch/arm64/include/asm/unistd32.h | 2 +-
arch/mips/kernel/syscalls/syscall_n32.tbl | 2 +-
Now that import_iovec handles compat iovecs as well, all the duplicated
code in the compat readv/writev helpers is not needed. Remove them
and switch the compat syscall handlers to use the native helpers.
Signed-off-by: Christoph Hellwig
---
fs/read_write.c| 179
Now that import_iovec handles compat iovecs, the native readv and writev
syscalls can be used for the compat case as well.
Signed-off-by: Christoph Hellwig
---
arch/arm64/include/asm/unistd32.h | 4 ++--
arch/mips/kernel/syscalls/syscall_n32.tbl | 4 ++--
Now that import_iovec handles compat iovecs, the native syscalls
can be used for the compat case as well.
Signed-off-by: Christoph Hellwig
---
arch/arm64/include/asm/unistd32.h | 4 +-
arch/mips/kernel/syscalls/syscall_n32.tbl | 4 +-
arch/mips/kernel/syscalls/syscall_o32.tbl
Use in compat_syscall to import either native or the compat iovecs, and
remove the now superflous compat_import_iovec.
This removes the need for special compat logic in most callers, and
the remaining ones can still be simplified by using __import_iovec
with a bool compat parameter.
allyesconfig
mips allmodconfig
powerpc allyesconfig
powerpc allmodconfig
powerpc allnoconfig
i386 randconfig-a002-20200924
i386 randconfig-a006-20200924
allnoconfig
i386 randconfig-a002-20200924
i386 randconfig-a006-20200924
i386 randconfig-a003-20200924
i386 randconfig-a004-20200924
i386 randconfig-a005-20200924
i386 randconfig-a001
defconfig
parisc allyesconfig
mips allyesconfig
powerpc allmodconfig
powerpc allnoconfig
i386 randconfig-a002-20200924
i386 randconfig-a006-20200924
i386
tree: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
next-test
head: 2e60265c1feb6848c77dbea22d38bbe262ec49db
commit: b90e1cfa05bddc2fa0e314a790df603479259637 [179/194] powerpc/pseries/eeh:
Rework device EEH PE determination
config: powerpc64-randconfig-r035-20200923
On 9/24/20 10:27 AM, pet...@infradead.org wrote:
> So my current todo list is:
>
> - Change RT PULL
> - Change DL PULL
> - Add migrate_disable() tracer; exactly like preempt/irqoff, except
>measuring task-runtime instead of cpu-time.
> - Add a mode that measures actual interference.
> -
On Thu, 24 Sep 2020 19:55:10 +0200
Thomas Gleixner wrote:
> On Thu, Sep 24 2020 at 08:32, Steven Rostedt wrote:
> > On Thu, 24 Sep 2020 08:57:52 +0200
> > Thomas Gleixner wrote:
> >
> >> > Now as for migration disabled nesting, at least now we would have
> >> > groupings of this, and perhaps
On Thu, Sep 24 2020 at 08:32, Steven Rostedt wrote:
> On Thu, 24 Sep 2020 08:57:52 +0200
> Thomas Gleixner wrote:
>
>> > Now as for migration disabled nesting, at least now we would have
>> > groupings of this, and perhaps the theorists can handle that. I mean,
>> > how is this much different
On Mon, 21 Sep 2020 14:32:20 +0530
sathn...@linux.vnet.ibm.com wrote:
> From: Satheesh Rajendran
>
> Add document entry for kvm_cma_resv_ratio kernel param which
> is used to alter the KVM contiguous memory allocation percentage
> for hash pagetable allocation used by hash mode PowerPC KVM
Hi Bjorn,
Thanks a lot for your comments!
> -Original Message-
> From: Bjorn Helgaas
> Sent: 2020年9月24日 4:16
> To: Xiaowei Bao
> Cc: Z.q. Hou ; M.h. Lian
> ; Mingkai Hu ;
> bhelg...@google.com; robh...@kernel.org; shawn...@kernel.org; Leo Li
> ; kis...@ti.com;
On Thu, Sep 24, 2020 at 09:51:38AM -0400, Steven Rostedt wrote:
> > It turns out, that getting selected for pull-balance is exactly that
> > condition, and clearly a migrate_disable() task cannot be pulled, but we
> > can use that signal to try and pull away the running task that's in the
> >
On Thu, 24 Sep 2020 14:42:41 +0200
Peter Zijlstra wrote:
> On Thu, Sep 24, 2020 at 08:32:41AM -0400, Steven Rostedt wrote:
> > Anyway, instead of blocking. What about having a counter of number of
> > migrate disabled tasks per cpu, and when taking a migrate_disable(), and
> > there's
> >
Hi Michael
Le 17/09/2020 à 14:33, Michael Ellerman a écrit :
Hi Christophe,
Christophe Leroy writes:
Hi Michael,
What is the status with the generic C vdso merge ?
In some mail, you mentionned having difficulties getting it working on
ppc64, any progress ? What's the problem ? Can I help ?
On Thu, Sep 24, 2020 at 08:32:41AM -0400, Steven Rostedt wrote:
> Anyway, instead of blocking. What about having a counter of number of
> migrate disabled tasks per cpu, and when taking a migrate_disable(), and
> there's
> already another task with migrate_disabled() set, and the current task has
On Thu, 24 Sep 2020 08:57:52 +0200
Thomas Gleixner wrote:
> > Now as for migration disabled nesting, at least now we would have
> > groupings of this, and perhaps the theorists can handle that. I mean,
> > how is this much different that having a bunch of tasks blocked on a
> > mutex with the
On Thu, 17 Sep 2020 12:45:09 +1000, Michael Ellerman wrote:
> Clang, and GCC with -Wmaybe-uninitialized, can't see that val is
> unused in get_fpexec_mode():
>
> arch/powerpc/kernel/process.c:1940:7: error: variable 'val' is used
> uninitialized whenever 'if' condition is true
>
On Thu, 17 Sep 2020 10:06:43 +0800, Yang Yingliang wrote:
> Fix link error when CONFIG_PPC_RADIX_MMU is disabled:
> powerpc64-linux-gnu-ld: arch/powerpc/platforms/pseries/lpar.o:(.toc+0x0):
> undefined reference to `mmu_pid_bits'
Applied to powerpc/next.
[1/1] powerpc/book3s64: fix link error
On Mon, 14 Sep 2020 14:52:15 +1000, Nicholas Piggin wrote:
> This is an attempt to fix a few different related issues around
> switching mm, TLB flushing, and lazy tlb mm handling.
>
> This will require all architectures to eventually move to disabling
> irqs over activate_mm, but it's possible
On Fri, 21 Aug 2020 20:34:07 +1000, Michael Ellerman wrote:
> It's possible to enable CONFIG_PPC_EARLY_DEBUG_BOOTX for a pseries
> kernel (maybe it shouldn't be), which is then booted with qemu/slof.
>
> But if you do that the kernel crashes in draw_byte(), with a DAR
> pointing somewhere near
On Wed, 19 Aug 2020 11:56:32 +1000, Michael Ellerman wrote:
> arch_cpu_idle_dead() is in idle.c, which makes sense, but it's inside
> a CONFIG_HOTPLUG_CPU block.
>
> It would be more at home in smp.c, inside the existing
> CONFIG_HOTPLUG_CPU block. Note that CONFIG_HOTPLUG_CPU depends on
>
On Wed, 16 Sep 2020 21:56:36 +1000, Michael Ellerman wrote:
> Sparse says:
> symbol slb_setup_new_exec was not declared. Should it be static?
>
> No, it should have a declaration in a header, add one.
Applied to powerpc/next.
[1/2] powerpc/mm/64s: Fix slb_setup_new_exec() sparse warning
On Wed, 16 Sep 2020 14:21:38 +0800, Qinglang Miao wrote:
> Use for_each_child_of_node() macro instead of open coding it.
Applied to powerpc/next.
[1/1] serial: pmac_zilog: use for_each_child_of_node() macro
https://git.kernel.org/powerpc/c/1d42e07e9c249b7a032fba82b673ee8a8d6bd7b7
cheers
On Wed, 16 Sep 2020 14:21:29 +0800, Qinglang Miao wrote:
> The logic of the warn output is incorrect. The two args should be
> exchanged.
Applied to powerpc/next.
[1/1] powerpc/powernv: fix wrong warning message in opalcore_config_init()
On Wed, 16 Sep 2020 14:21:25 +0800, Qinglang Miao wrote:
> Use for_each_child_of_node() macro instead of open coding it.
Applied to powerpc/next.
[1/1] macintosh: smu_sensors: use for_each_child_of_node() macro
https://git.kernel.org/powerpc/c/acff5e6c37fa4bf8d002c917a762c4f7615f6eaf
On Wed, 16 Sep 2020 14:21:22 +0800, Qinglang Miao wrote:
> Use for_each_child_of_node() macro instead of open coding it.
Applied to powerpc/next.
[1/1] drivers/macintosh/smu.c: use for_each_child_of_node() macro
https://git.kernel.org/powerpc/c/9c826d31a73815464bd3df81e56d39b3d908ac73
On Wed, 16 Sep 2020 10:50:26 +0800, Liu Shixin wrote:
> Use DEFINE_SEQ_ATTRIBUTE macro to simplify the code.
Applied to powerpc/next.
[1/1] powerpc/pseries: convert to use DEFINE_SEQ_ATTRIBUTE macro
https://git.kernel.org/powerpc/c/96543e7352bded5d6d1a0e0022376ebdd6c1b8ab
cheers
On Mon, 14 Sep 2020 23:10:00 +0200, Cédric Le Goater wrote:
> Here is a small contribution improving compile with W=1.
>
> Thanks,
>
> C.
>
> Changes in v2:
>
> [...]
Patches 1, 3, 4 and 7 applied to powerpc/next.
[1/7] powerpc/sysfs: Remove unused 'err' variable in
Thanks for the patch. This looks good to me.
Wang Wensheng writes:
> Build the kernel with 'make C=2':
> arch/powerpc/platforms/pseries/papr_scm.c:825:1: warning: symbol
> 'dev_attr_perf_stats' was not declared. Should it be static?
> Signed-off-by: Wang Wensheng
Reviewed-by: Vaibhav Jain
On 9/24/20 7:11 AM, Alexey Kardashevskiy wrote:
>
>
> On 23/09/2020 17:06, Cédric Le Goater wrote:
>> On 9/23/20 2:33 AM, Qian Cai wrote:
>>> On Fri, 2020-08-07 at 12:18 +0200, Cédric Le Goater wrote:
When a passthrough IO adapter is removed from a pseries machine using
hash MMU and
On Wed, Sep 23, 2020 at 11:52:51AM -0400, Steven Rostedt wrote:
> On Wed, 23 Sep 2020 10:40:32 +0200
> pet...@infradead.org wrote:
>
> > However, with migrate_disable() we can have each task preempted in a
> > migrate_disable() region, worse we can stack them all on the _same_ CPU
> > (super
https://bugzilla.kernel.org/show_bug.cgi?id=195755
Nigel Reed (ni...@nigelreed.net) changed:
What|Removed |Added
CC||ni...@nigelreed.net
On 24/09/2020 00:10, Christoph Hellwig wrote:
> On Tue, Sep 22, 2020 at 12:26:18PM +1000, Alexey Kardashevskiy wrote:
>>> Well, the original intent of dma_get_required_mask is to return the
>>> mask that the driver then uses to figure out what to set, so what aacraid
>>> does fits that use
On Wed, Sep 23 2020 at 17:12, Steven Rostedt wrote:
> On Wed, 23 Sep 2020 22:55:54 +0200
> Then scratch the idea of having anonymous local_lock() and just bring
> local_lock in directly? Then have a kmap local lock, which would only
> block those that need to do a kmap.
That's still going to end
On Thu, Sep 24, 2020 at 3:15 PM Mamatha Inamdar
wrote:
>
> This patch adds a brief MODULE_DESCRIPTION to rpadlpar_io kernel modules
> (descriptions taken from Kconfig file)
>
> Signed-off-by: Mamatha Inamdar
> ---
> drivers/pci/hotplug/rpadlpar_core.c |1 +
> 1 file changed, 1 insertion(+)
Signed-off-by: Oliver O'Halloran
---
compile tested with pmac32_defconfig and g5_defconfig
---
arch/powerpc/platforms/powermac/setup.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/arch/powerpc/platforms/powermac/setup.c
b/arch/powerpc/platforms/powermac/setup.c
index
Signed-off-by: Oliver O'Halloran
---
compile tested with pasemi_defconfig
---
arch/powerpc/platforms/pasemi/setup.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/pasemi/setup.c
b/arch/powerpc/platforms/pasemi/setup.c
index
Signed-off-by: Oliver O'Halloran
---
compile tested with mvme5100_defconfig
---
arch/powerpc/platforms/embedded6xx/mvme5100.c | 13 -
arch/powerpc/platforms/embedded6xx/storcenter.c | 8 ++--
2 files changed, 14 insertions(+), 7 deletions(-)
diff --git
Signed-off-by: Oliver O'Halloran
---
compile tested with mpc7448_hpc2_defconfig
---
arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c | 14 +-
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
Signed-off-by: Oliver O'Halloran
---
compile tested with holly_defconfig
---
arch/powerpc/platforms/embedded6xx/holly.c | 10 +++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/platforms/embedded6xx/holly.c
b/arch/powerpc/platforms/embedded6xx/holly.c
index
Signed-off-by: Oliver O'Halloran
---
compile tested with linkstation_defconfig
---
arch/powerpc/platforms/embedded6xx/linkstation.c | 10 +++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/platforms/embedded6xx/linkstation.c
Signed-off-by: Oliver O'Halloran
---
compile tested with chrp32_defconfig
---
arch/powerpc/platforms/chrp/pci.c | 8
arch/powerpc/platforms/chrp/setup.c | 12 +---
2 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/arch/powerpc/platforms/chrp/pci.c
Signed-off-by: Oliver O'Halloran
---
compile tested with amigaone_defconfig
---
arch/powerpc/platforms/amigaone/setup.c | 10 +++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/platforms/amigaone/setup.c
b/arch/powerpc/platforms/amigaone/setup.c
index
Signed-off-by: Oliver O'Halloran
---
compile tested with mpc83xx_defconfig
---
arch/powerpc/platforms/83xx/asp834x.c | 1 +
arch/powerpc/platforms/83xx/km83xx.c | 1 +
arch/powerpc/platforms/83xx/misc.c| 2 --
arch/powerpc/platforms/83xx/mpc830x_rdb.c | 1 +
Signed-off-by: Oliver O'Halloran
---
compile tested with pq2fads_defconfig
---
arch/powerpc/platforms/82xx/mpc8272_ads.c | 2 +-
arch/powerpc/platforms/82xx/pq2fads.c | 3 +--
2 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/platforms/82xx/mpc8272_ads.c
Signed-off-by: Oliver O'Halloran
---
arch/powerpc/platforms/52xx/mpc5200_simple.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/52xx/mpc5200_simple.c
b/arch/powerpc/platforms/52xx/mpc5200_simple.c
index 2d01e9b2e779..b9f5675b0a1d 100644
---
Signed-off-by: Oliver O'Halloran
---
arch/powerpc/platforms/52xx/media5200.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/52xx/media5200.c
b/arch/powerpc/platforms/52xx/media5200.c
index 07c5bc4ed0b5..efb8bdecbcc7 100644
---
Signed-off-by: Oliver O'Halloran
---
compile tested with 52xx/lite5200b_defconfig
---
arch/powerpc/platforms/52xx/lite5200.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/52xx/lite5200.c
b/arch/powerpc/platforms/52xx/lite5200.c
index
Signed-off-by: Oliver O'Halloran
---
compile tested with mpc5200_defconfig
---
arch/powerpc/platforms/52xx/efika.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/52xx/efika.c
b/arch/powerpc/platforms/52xx/efika.c
index 4514a6f7458a..3b7d70d71692
Signed-off-by: Oliver O'Halloran
---
only compile tested
---
arch/powerpc/platforms/512x/mpc5121_ads.c | 13 -
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/platforms/512x/mpc5121_ads.c
b/arch/powerpc/platforms/512x/mpc5121_ads.c
index
Signed-off-by: Oliver O'Halloran
---
arch/powerpc/platforms/maple/setup.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/arch/powerpc/platforms/maple/setup.c
b/arch/powerpc/platforms/maple/setup.c
index f7e66a2005b4..4e9ad5bf3efb 100644
---
Make powernv and pseries use ppc_mc.discover_phbs. These two platforms need
to be done together because they both depends on pci_dn's being created
from the DT. The pci_dn contains a pointer to the relevant pci_controller
so they need to be created after the pci_controller structures are
On many powerpc platforms the discovery and initalisation of
pci_controllers (PHBs) happens inside of setup_arch(). This is very early
in boot (pre-initcalls) and means that we're initialising the PHB long
before many basic kernel services (slab allocator, debugfs, a real ioremap)
are available.
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