Le 18/03/2020 à 23:06, Mike Kravetz a écrit :
The architecture independent routine hugetlb_default_setup sets up
the default huge pages size. It has no way to verify if the passed
value is valid, so it accepts it and attempts to validate at a later
time. This requires undocumented cooperatio
Accessing thread_info flags can cause an SLB fault, so it must not
be done with MSR[RI]=0, which leads to SLB unrecoverable fault error.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/kernel/syscall_64.c | 12 +++-
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/arch/power
Le 18/03/2020 à 23:06, Mike Kravetz a écrit :
Now that architectures provide arch_hugetlb_valid_size(), parsing
of "hugepagesz=" can be done in architecture independent code.
Create a single routine to handle hugepagesz= parsing and remove
all arch specific routines. We can also remove the in
On Wed 18-03-20 19:20:41, Cristopher Lameter wrote:
> On Wed, 18 Mar 2020, Srikar Dronamraju wrote:
>
> > For a memoryless or offline nodes, node_numa_mem refers to a N_MEMORY
> > fallback node. Currently kernel has an API set_numa_mem that sets
> > node_numa_mem for memoryless node. However this
Le 18/03/2020 à 11:02, Frederic Barrat a écrit :
From: Philippe Bergheaud
Some opencapi FPGA images allow to control if the FPGA should be reloaded
on the next adapter reset. If it is supported, the image specifies it
through a Vendor Specific DVSEC in the config space of function 0.
Signed
On Wed, Mar 18, 2020 at 09:43:06PM +0100, Thomas Gleixner wrote:
> From: Thomas Gleixner
>
> The completion usage in this driver is interesting:
>
> - it uses a magic complete function which according to the comment was
> implemented by invoking complete() four times in a row because
>
On Wed, Mar 18, 2020 at 09:43:05PM +0100, Thomas Gleixner wrote:
> ep_io() uses a completion on stack and open codes the waiting with:
>
> wait_event_interruptible (done.wait, done.done);
> and
> wait_event (done.wait, done.done);
>
> This waits in non-exclusive mode for complete(), but there
On Wed, Mar 18, 2020 at 09:43:13PM +0100, Thomas Gleixner wrote:
> From: Thomas Gleixner
>
> completion uses a wait_queue_head_t to enqueue waiters.
>
> wait_queue_head_t contains a spinlock_t to protect the list of waiters
> which excludes it from being used in truly atomic context on a PREEMPT
On Wed, 18 Mar 2020, Thomas Gleixner wrote:
+Owner semantics
+===
+
+Most lock types in the Linux kernel have strict owner semantics, i.e. the
+context (task) which acquires a lock has to release it.
+
+There are two exceptions:
+
+ - semaphores
+ - rwsems
+
+semaphores have no stri
> OK how about this version? It's somewhat ugly, but important is that the fast
> path case (c->page exists) is unaffected and another common case (c->page is
> NULL, but node is NUMA_NO_NODE) is just one extra check - impossible to avoid
> at
> some point anyway.
>
I attempted the suggested t
Le 25/02/2020 à 18:35, Nicholas Piggin a écrit :
System call entry and particularly exit code is beyond the limit of what
is reasonable to implement in asm.
This conversion moves all conditional branches out of the asm code,
except for the case that all GPRs should be restored at exit.
Null
On Thu, Mar 19, 2020 at 10:00:24AM +0100, Sebastian Andrzej Siewior wrote:
> On 2020-03-18 21:43:09 [+0100], Thomas Gleixner wrote:
> > --- a/arch/powerpc/platforms/ps3/device-init.c
> > +++ b/arch/powerpc/platforms/ps3/device-init.c
> > @@ -725,12 +728,12 @@ static int ps3_notification_read_write(
On Wed, 18 Mar 2020, Thomas Gleixner wrote:
AFAICT the kthread uses TASK_INTERRUPTIBLE to not increase loadavg, kthreads
cannot receive signals by default and this one doesn't look different. Use
TASK_IDLE instead.
Hmm it seems in general this needs to be done kernel-wide. This kthread abuse of
On 3/19/20 1:32 AM, Michael Ellerman wrote:
> Seems like a nice solution to me
Thanks :)
>> 8<
>> diff --git a/mm/slub.c b/mm/slub.c
>> index 17dc00e33115..1d4f2d7a0080 100644
>> --- a/mm/slub.c
>> +++ b/mm/slub.c
>> @@ -1511,7 +1511,7 @@ static inline struct page *alloc_slab_page(struct
On 2020-03-18 21:43:09 [+0100], Thomas Gleixner wrote:
> --- a/arch/powerpc/platforms/ps3/device-init.c
> +++ b/arch/powerpc/platforms/ps3/device-init.c
> @@ -725,12 +728,12 @@ static int ps3_notification_read_write(s
> unsigned long flags;
> int res;
>
> - init_completion(&dev->d
David Hildenbrand writes:
> Let's always try to online the re-added memory blocks. In case add_memory()
> already onlined the added memory blocks, the first device_online() call
> will fail and stop processing the remaining memory blocks.
>
> This avoids manually having to check memhp_auto_online.
On Wed, Mar 18, 2020 at 09:43:09PM +0100, Thomas Gleixner wrote:
> The PS3 notification interrupt and kthread use a hacked up completion to
> communicate. Since we're wanting to change the completion implementation and
> this is abuse anyway, replace it with a simple rcuwait since there is only
>
Hi,
here's v2 with build breakage fixed on ppc and s390 (obviously I can't
grep :-\) and commit message extended to explain more why.
Thx.
---
From: Borislav Petkov
Date: Tue, 17 Mar 2020 12:03:05 +0100
Back then when the whole SME machinery started getting mainlined, it
was agreed that for si
On Thu, Mar 19, 2020 at 11:16:57AM +0100, Borislav Petkov wrote:
> Hi,
>
> here's v2 with build breakage fixed on ppc and s390 (obviously I can't
> grep :-\) and commit message extended to explain more why.
I thought we agreed that decrypted is absolutely the wrong term.
So NAK - if you want to
On Monday, March 16, 2020 2:57:43 PM CET Pratik Rajesh Sampat wrote:
> The patch avoids allocating cpufreq_policy on stack hence fixing frame
> size overflow in 'powernv_cpufreq_work_fn'
>
> Fixes: 227942809b52 ("cpufreq: powernv: Restore cpu frequency to policy->cur
> on unthrottling")
> Signed-
On 2020-03-19 03:04:59 [-0700], Christoph Hellwig wrote:
> But I wonder how alive the whole PS3 support is to start with..
OtherOS can only be used on "old" PS3 which do not have have their
firmware upgraded past version 3.21, released April 1, 2010 [0].
It was not possible to install OtherOS on P
On Thu, Mar 19, 2020 at 11:20:11AM +0100, Christoph Hellwig wrote:
> I thought we agreed that decrypted is absolutely the wrong term.
I don't think we did. At least I don't know where we did that.
> So NAK - if you want to change things it needs to go the other way.
We are already using "decrypt
Hi Athira,
Athira Rajeev writes:
> Sampled Instruction Event Register (SIER), is a PMU register,
^
that
> captures architecture state for a given sample. And sier_user_mas
[since this is in my inbox...]
On 2020-03-19 10:28 am, Borislav Petkov wrote:
On Thu, Mar 19, 2020 at 11:20:11AM +0100, Christoph Hellwig wrote:
I thought we agreed that decrypted is absolutely the wrong term.
I don't think we did. At least I don't know where we did that.
So NAK - if you wa
On Thu, Mar 19, 2020 at 11:06:15AM +, Robin Murphy wrote:
> Let me add another vote from a native English speaker that "unencrypted" is
> the appropriate term to imply the *absence* of encryption, whereas
> "decrypted" implies the *reversal* of applied encryption.
>
> Naming things is famously
Kim Phillips writes:
> On 3/17/20 1:50 AM, maddy wrote:
>> On 3/13/20 4:08 AM, Kim Phillips wrote:
>>> On 3/11/20 11:00 AM, Ravi Bangoria wrote:
>>>
information on each sample using PMI at periodic intervals. Hence proposing
PERF_SAMPLE_PIPELINE_HAZ.
>>>
>>> And that's fine for any extra
This partially reverts commit caf6f9c8a326 ("asm-generic: Remove
unneeded __ARCH_WANT_SYS_LLSEEK macro")
When CONFIG_COMPAT is disabled on ppc64 the kernel does not build.
There is resistance to both removing the llseek syscall from the 64bit
syscall tables and building the llseek interface uncon
Less code means less bugs so add a knob to skip the compat stuff.
Changes in v2: saner CONFIG_COMPAT ifdefs
Changes in v3:
- change llseek to 32bit instead of builing it unconditionally in fs
- clanup the makefile conditionals
- remove some ifdefs or convert to IS_DEFINED where possible
Changes
These functions are required for 64bit as well.
Signed-off-by: Michal Suchanek
Reviewed-by: Christophe Leroy
---
arch/powerpc/kernel/signal.c| 141
arch/powerpc/kernel/signal_32.c | 140 ---
2 files changed, 141 insertions(+), 140
There are two almost identical copies for 32bit and 64bit.
The function is used only in 32bit code which will be split out in next
patch so consolidate to one function.
Signed-off-by: Michal Suchanek
Reviewed-by: Christophe Leroy
---
v6: new patch
v8: move the consolidated function out of the
There are numerous references to 32bit functions in generic and 64bit
code so ifdef them out.
Signed-off-by: Michal Suchanek
---
v2:
- fix 32bit ifdef condition in signal.c
- simplify the compat ifdef condition in vdso.c - 64bit is redundant
- simplify the compat ifdef condition in callchain.c -
Merge the 32bit and 64bit version.
Halve the check constants on 32bit.
Use STACK_TOP since it is defined.
Passing is_64 is now redundant since is_32bit_task() is used to
determine which callchain variant should be used. Use STACK_TOP and
is_32bit_task() directly.
This removes a page from the va
On bigendian ppc64 it is common to have 32bit legacy binaries but much
less so on littleendian.
Signed-off-by: Michal Suchanek
Reviewed-by: Christophe Leroy
---
v3: make configurable
---
arch/powerpc/Kconfig | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/K
Signed-off-by: Michal Suchanek
---
v10: new patch
---
MAINTAINERS | 2 ++
1 file changed, 2 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index bc8dbe4fe4c9..329bf4a31412 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13088,6 +13088,8 @@ F: arch/*/kernel/*/perf_event*.c
F: arch/
Building callchain.c with !COMPAT proved quite ugly with all the
defines. Splitting out the 32bit and 64bit parts looks better.
No code change intended.
Signed-off-by: Michal Suchanek
---
v6:
- move current_is_64bit consolidetaion to earlier patch
- move defines to the top of callchain_32.c
-
Less code means less bugs so add a knob to skip the compat stuff.
Changes in v2: saner CONFIG_COMPAT ifdefs
Changes in v3:
- change llseek to 32bit instead of builing it unconditionally in fs
- clanup the makefile conditionals
- remove some ifdefs or convert to IS_DEFINED where possible
Changes
This partially reverts commit caf6f9c8a326 ("asm-generic: Remove
unneeded __ARCH_WANT_SYS_LLSEEK macro")
When CONFIG_COMPAT is disabled on ppc64 the kernel does not build.
There is resistance to both removing the llseek syscall from the 64bit
syscall tables and building the llseek interface uncon
These functions are required for 64bit as well.
Signed-off-by: Michal Suchanek
Reviewed-by: Christophe Leroy
---
arch/powerpc/kernel/signal.c| 141
arch/powerpc/kernel/signal_32.c | 140 ---
2 files changed, 141 insertions(+), 140
Merge the 32bit and 64bit version.
Halve the check constants on 32bit.
Use STACK_TOP since it is defined.
Passing is_64 is now redundant since is_32bit_task() is used to
determine which callchain variant should be used. Use STACK_TOP and
is_32bit_task() directly.
This removes a page from the va
There are two almost identical copies for 32bit and 64bit.
The function is used only in 32bit code which will be split out in next
patch so consolidate to one function.
Signed-off-by: Michal Suchanek
Reviewed-by: Christophe Leroy
---
v6: new patch
v8: move the consolidated function out of the
There are numerous references to 32bit functions in generic and 64bit
code so ifdef them out.
Signed-off-by: Michal Suchanek
---
v2:
- fix 32bit ifdef condition in signal.c
- simplify the compat ifdef condition in vdso.c - 64bit is redundant
- simplify the compat ifdef condition in callchain.c -
On bigendian ppc64 it is common to have 32bit legacy binaries but much
less so on littleendian.
Signed-off-by: Michal Suchanek
Reviewed-by: Christophe Leroy
---
v3: make configurable
---
arch/powerpc/Kconfig | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/K
Building callchain.c with !COMPAT proved quite ugly with all the
defines. Splitting out the 32bit and 64bit parts looks better.
No code change intended.
Signed-off-by: Michal Suchanek
---
v6:
- move current_is_64bit consolidetaion to earlier patch
- move defines to the top of callchain_32.c
-
Signed-off-by: Michal Suchanek
---
v10: new patch
---
MAINTAINERS | 2 ++
1 file changed, 2 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index bc8dbe4fe4c9..329bf4a31412 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13088,6 +13088,8 @@ F: arch/*/kernel/*/perf_event*.c
F: arch/
Lost some headers so will resend.
On Thu, Mar 19, 2020 at 12:52:20PM +0100, Michal Suchanek wrote:
> Less code means less bugs so add a knob to skip the compat stuff.
>
> Changes in v2: saner CONFIG_COMPAT ifdefs
> Changes in v3:
> - change llseek to 32bit instead of builing it unconditionally i
You sent it twice ? Any difference between the two dispatch ?
Christophe
Le 19/03/2020 à 13:19, Michal Suchanek a écrit :
Less code means less bugs so add a knob to skip the compat stuff.
Changes in v2: saner CONFIG_COMPAT ifdefs
Changes in v3:
- change llseek to 32bit instead of builing it
The name is misleading and it's not really clear what is "kept". Let's just
name it like the online_type name we expose to user space ("online").
Add some documentation to the types.
Reviewed-by: Wei Yang
Cc: Greg Kroah-Hartman
Cc: Andrew Morton
Cc: Michal Hocko
Cc: Oscar Salvador
Cc: "Rafae
Distributions nowadays use udev rules ([1] [2]) to specify if and
how to online hotplugged memory. The rules seem to get more complex with
many special cases. Due to the various special cases,
CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE cannot be used. All memory hotplug
is handled via udev rules.
Everyt
Historically, we used the value -1. Just treat 0 as the special
case now. Clarify a comment (which was wrong, when we come via
device_online() the first time, the online_type would have been 0 /
MEM_ONLINE). The default is now always MMOP_OFFLINE. This removes the
last user of the manual "-1", whic
Let's use a simple array which we can reuse soon. While at it, move the
string->mmop conversion out of the device hotplug lock.
Reviewed-by: Wei Yang
Acked-by: Michal Hocko
Cc: Greg Kroah-Hartman
Cc: Andrew Morton
Cc: Michal Hocko
Cc: Oscar Salvador
Cc: "Rafael J. Wysocki"
Cc: Baoquan He
C
Let's always try to online the re-added memory blocks. In case add_memory()
already onlined the added memory blocks, the first device_online() call
will fail and stop processing the remaining memory blocks.
This avoids manually having to check memhp_auto_online.
Note: PPC always onlines all hotpl
All in-tree users except the mm-core are gone. Let's drop the export.
Reviewed-by: Wei Yang
Acked-by: Michal Hocko
Cc: Andrew Morton
Cc: Michal Hocko
Cc: Oscar Salvador
Cc: "Rafael J. Wysocki"
Cc: Baoquan He
Cc: Wei Yang
Signed-off-by: David Hildenbrand
---
mm/memory_hotplug.c | 1 -
1 f
We get the MEM_ONLINE notifier call if memory is added right from the
kernel via add_memory() or later from user space.
Let's get rid of the "ha_waiting" flag - the wait event has an inbuilt
mechanism (->done) for that. Initialize the wait event only once and
reinitialize before adding memory. Unc
... and rename it to memhp_default_online_type. This is a preparation
for more detailed default online behavior.
Reviewed-by: Wei Yang
Acked-by: Michal Hocko
Cc: Greg Kroah-Hartman
Cc: Andrew Morton
Cc: Michal Hocko
Cc: Oscar Salvador
Cc: "Rafael J. Wysocki"
Cc: Baoquan He
Cc: Wei Yang
Si
For now, distributions implement advanced udev rules to essentially
- Don't online any hotplugged memory (s390x)
- Online all memory to ZONE_NORMAL (e.g., most virt environments like
hyperv)
- Online all memory to ZONE_MOVABLE in case the zone imbalance is taken
care of (e.g., bare metal, speci
On 3/19/20 9:52 AM, Sachin Sant wrote:
>
>> OK how about this version? It's somewhat ugly, but important is that the fast
>> path case (c->page exists) is unaffected and another common case (c->page is
>> NULL, but node is NUMA_NO_NODE) is just one extra check - impossible to
>> avoid at
>> some
> On 19-Mar-2020, at 6:53 PM, Vlastimil Babka wrote:
>
> On 3/19/20 9:52 AM, Sachin Sant wrote:
>>
>>> OK how about this version? It's somewhat ugly, but important is that the
>>> fast
>>> path case (c->page exists) is unaffected and another common case (c->page is
>>> NULL, but node is NUMA
On Thu, Mar 19, 2020 at 1:54 PM Michal Suchanek wrote:
>
> Merge the 32bit and 64bit version.
>
> Halve the check constants on 32bit.
>
> Use STACK_TOP since it is defined.
>
> Passing is_64 is now redundant since is_32bit_task() is used to
> determine which callchain variant should be used. Use S
On Thu, Mar 19, 2020 at 2:21 PM Michal Suchanek wrote:
>
> Signed-off-by: Michal Suchanek
> ---
> v10: new patch
> ---
> MAINTAINERS | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index bc8dbe4fe4c9..329bf4a31412 100644
> --- a/MAINTAINERS
> +++ b/MAINTAIN
On 3/19/20 2:26 PM, Sachin Sant wrote:
>
>
>> On 19-Mar-2020, at 6:53 PM, Vlastimil Babka wrote:
>>
>> On 3/19/20 9:52 AM, Sachin Sant wrote:
>>>
OK how about this version? It's somewhat ugly, but important is that the
fast
path case (c->page exists) is unaffected and another c
On Thu, Mar 19, 2020 at 03:37:03PM +0200, Andy Shevchenko wrote:
> On Thu, Mar 19, 2020 at 2:21 PM Michal Suchanek wrote:
> >
> > Signed-off-by: Michal Suchanek
> > ---
> > v10: new patch
> > ---
> > MAINTAINERS | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/MAINTAINERS b/MAINT
On Thu, Mar 19, 2020 at 01:36:56PM +0100, Christophe Leroy wrote:
> You sent it twice ? Any difference between the two dispatch ?
Some headers were broken the first time around.
Thanks
Michal
>
> Christophe
>
> Le 19/03/2020 à 13:19, Michal Suchanek a écrit :
> > Less code means less bugs so ad
On Thu, Mar 19, 2020 at 03:35:03PM +0200, Andy Shevchenko wrote:
> On Thu, Mar 19, 2020 at 1:54 PM Michal Suchanek wrote:
> >
> > Merge the 32bit and 64bit version.
> >
> > Halve the check constants on 32bit.
> >
> > Use STACK_TOP since it is defined.
> >
> > Passing is_64 is now redundant since i
* Vlastimil Babka [2020-03-19 14:47:58]:
> 8<
> diff --git a/mm/slub.c b/mm/slub.c
> index 17dc00e33115..7113b1f9cd77 100644
> --- a/mm/slub.c
> +++ b/mm/slub.c
> @@ -1973,8 +1973,6 @@ static void *get_partial(struct kmem_cache *s, gfp_t
> flags, int node,
>
> if (node == NUMA_NO_
On 3/19/20 3:05 PM, Srikar Dronamraju wrote:
> * Vlastimil Babka [2020-03-19 14:47:58]:
>
>> 8<
>> diff --git a/mm/slub.c b/mm/slub.c
>> index 17dc00e33115..7113b1f9cd77 100644
>> --- a/mm/slub.c
>> +++ b/mm/slub.c
>> @@ -1973,8 +1973,6 @@ static void *get_partial(struct kmem_cache *s, gf
Le 19/03/2020 à 14:35, Andy Shevchenko a écrit :
On Thu, Mar 19, 2020 at 1:54 PM Michal Suchanek wrote:
Merge the 32bit and 64bit version.
Halve the check constants on 32bit.
Use STACK_TOP since it is defined.
Passing is_64 is now redundant since is_32bit_task() is used to
determine whic
On Thu, Mar 19, 2020 at 03:00:08PM +0100, Michal Suchánek wrote:
> On Thu, Mar 19, 2020 at 03:37:03PM +0200, Andy Shevchenko wrote:
> > On Thu, Mar 19, 2020 at 2:21 PM Michal Suchanek wrote:
> > >
> > > Signed-off-by: Michal Suchanek
> > > ---
> > > v10: new patch
> > > ---
> > > MAINTAINERS | 2
On Wed, Mar 18, 2020 at 03:53:54PM -0400, Stefan Berger wrote:
> On 3/18/20 3:42 PM, Jarkko Sakkinen wrote:
> > On Tue, Mar 17, 2020 at 09:08:19AM -0400, Stefan Berger wrote:
> > > From: Stefan Berger
> > >
> > > This patch fixes the following problem when the ibmvtpm driver
> > > is built as a m
On Thu, Mar 19, 2020 at 03:16:03PM +0100, Christophe Leroy wrote:
>
>
> Le 19/03/2020 à 14:35, Andy Shevchenko a écrit :
> > On Thu, Mar 19, 2020 at 1:54 PM Michal Suchanek wrote:
> > >
> > > Merge the 32bit and 64bit version.
> > >
> > > Halve the check constants on 32bit.
> > >
> > > Use ST
>>> Great, thanks! Can I add your Tested-by: then?
>>
>> Sure.
>> Tested-by: Sachin Sant
>>
>> Thank you for the fix.
>
> Thanks! Sorry to bother, but in the end I decided to do further change so I
> would appreciate verification if it still works as intended.
Works as expected. I am able to b
On Wed, 18 Mar 2020 21:43:10 +0100
Thomas Gleixner wrote:
> From: Thomas Gleixner
>
> The kernel provides a variety of locking primitives. The nesting of these
> lock types and the implications of them on RT enabled kernels is nowhere
> documented.
>
> Add initial documentation.
...time to ad
On 3/19/20 10:27 AM, Jarkko Sakkinen wrote:
On Wed, Mar 18, 2020 at 03:53:54PM -0400, Stefan Berger wrote:
On 3/18/20 3:42 PM, Jarkko Sakkinen wrote:
On Tue, Mar 17, 2020 at 09:08:19AM -0400, Stefan Berger wrote:
From: Stefan Berger
This patch fixes the following problem when the ibmvtpm dri
On Thu, 2020-03-19 at 13:19 +0100, Michal Suchanek wrote:
> Signed-off-by: Michal Suchanek
> ---
> v10: new patch
> ---
> MAINTAINERS | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index bc8dbe4fe4c9..329bf4a31412 100644
> --- a/MAINTAINERS
> +++ b/MAINTAI
On 3/19/20 12:04 AM, Christophe Leroy wrote:
>
>
> Le 18/03/2020 à 23:06, Mike Kravetz a écrit :
>> Now that architectures provide arch_hugetlb_valid_size(), parsing
>> of "hugepagesz=" can be done in architecture independent code.
>> Create a single routine to handle hugepagesz= parsing and remo
On Wed, Mar 18, 2020 at 1:47 PM Thomas Gleixner wrote:
>
> There is no semantical or functional change:
Ack, with just the explanation, I'm no longer objecting to this.
Plus you fixed and cleaned up the odd usb gadget code separately
(well, most of it).
Linus
Borislav Petkov writes:
> On Thu, Mar 19, 2020 at 11:06:15AM +, Robin Murphy wrote:
>> Let me add another vote from a native English speaker that "unencrypted" is
>> the appropriate term to imply the *absence* of encryption, whereas
>> "decrypted" implies the *reversal* of applied encryption.
On Thu, Mar 19, 2020 at 06:25:49PM +0100, Thomas Gleixner wrote:
> TBH, I don't see how
>
> if (force_dma_decrypted(dev))
> set_memory_encrypted((unsigned long)cpu_addr, 1 << page_order);
>
> makes more sense than the above. It's both non-sensical unless there is
9087c37584fb
Paul,
"Paul E. McKenney" writes:
> On Wed, Mar 18, 2020 at 09:43:10PM +0100, Thomas Gleixner wrote:
>
> Mostly native-English-speaker services below, so please feel free to
> ignore. The one place I made a substantive change, I marked it "@@@".
> I only did about half of this document, but shou
Jonathan Corbet writes:
> On Wed, 18 Mar 2020 21:43:10 +0100
> Thomas Gleixner wrote:
>> Add initial documentation.
>
> ...time to add a a couple of nits...:)
...time
Is that valid RST?
>> +++ b/Documentation/locking/locktypes.rst
>> @@ -0,0 +1,298 @@
>> +.. _kernel_hacking_locktypes:
>> +
>
>
On 3/19/20 12:00 AM, Christophe Leroy wrote:
>
> Le 18/03/2020 à 23:06, Mike Kravetz a écrit :
>> The architecture independent routine hugetlb_default_setup sets up
>> the default huge pages size. It has no way to verify if the passed
>> value is valid, so it accepts it and attempts to validate a
On Wed, Mar 18, 2020 at 09:00:17PM -0400, Stefan Berger wrote:
> From: Stefan Berger
>
> This patch fixes the following problem when the ibmvtpm driver
> is built as a module:
>
> ERROR: modpost: "tpm2_get_cc_attrs_tbl" [drivers/char/tpm/tpm_ibmvtpm.ko]
> undefined!
> make[1]: *** [scripts/Make
https://bugzilla.kernel.org/show_bug.cgi?id=206669
--- Comment #13 from John Paul Adrian Glaubitz (glaub...@physik.fu-berlin.de)
---
watson login: [30887.552539] KVM: CPU 4 seems to be stuck
[30900.094713] watchdog: CPU 8 detected hard LOCKUP on other CPUs 0
[30900.094730] watchdog: CPU 8 TB:1586
> The name is misleading and it's not really clear what is "kept". Let's just
> name it like the online_type name we expose to user space ("online").
>
> Add some documentation to the types.
>
> Reviewed-by: Wei Yang
> Cc: Greg Kroah-Hartman
> Cc: Andrew Morton
> Cc: Michal Hocko
> Cc: Oscar Sa
> Historically, we used the value -1. Just treat 0 as the special
> case now. Clarify a comment (which was wrong, when we come via
> device_online() the first time, the online_type would have been 0 /
> MEM_ONLINE). The default is now always MMOP_OFFLINE. This removes the
> last user of the manual
> Let's use a simple array which we can reuse soon. While at it, move the
> string->mmop conversion out of the device hotplug lock.
>
> Reviewed-by: Wei Yang
> Acked-by: Michal Hocko
> Cc: Greg Kroah-Hartman
> Cc: Andrew Morton
> Cc: Michal Hocko
> Cc: Oscar Salvador
> Cc: "Rafael J. Wysocki"
> All in-tree users except the mm-core are gone. Let's drop the export.
>
> Reviewed-by: Wei Yang
> Acked-by: Michal Hocko
> Cc: Andrew Morton
> Cc: Michal Hocko
> Cc: Oscar Salvador
> Cc: "Rafael J. Wysocki"
> Cc: Baoquan He
> Cc: Wei Yang
> Signed-off-by: David Hildenbrand
> ---
> mm/me
> ... and rename it to memhp_default_online_type. This is a preparation
> for more detailed default online behavior.
>
> Reviewed-by: Wei Yang
> Acked-by: Michal Hocko
> Cc: Greg Kroah-Hartman
> Cc: Andrew Morton
> Cc: Michal Hocko
> Cc: Oscar Salvador
> Cc: "Rafael J. Wysocki"
> Cc: Baoquan
> For now, distributions implement advanced udev rules to essentially
> - Don't online any hotplugged memory (s390x)
> - Online all memory to ZONE_NORMAL (e.g., most virt environments like
> hyperv)
> - Online all memory to ZONE_MOVABLE in case the zone imbalance is taken
> care of (e.g., bare
On Thu, Mar 19, 2020 at 11:56:11AM -0400, Stefan Berger wrote:
> On 3/19/20 10:27 AM, Jarkko Sakkinen wrote:
> > On Wed, Mar 18, 2020 at 03:53:54PM -0400, Stefan Berger wrote:
> > > On 3/18/20 3:42 PM, Jarkko Sakkinen wrote:
> > > > On Tue, Mar 17, 2020 at 09:08:19AM -0400, Stefan Berger wrote:
> >
On Thu, Mar 19, 2020 at 06:25:49PM +0100, Thomas Gleixner wrote:
> Borislav Petkov writes:
>
> > On Thu, Mar 19, 2020 at 11:06:15AM +, Robin Murphy wrote:
> >> Let me add another vote from a native English speaker that "unencrypted" is
> >> the appropriate term to imply the *absence* of encry
kvmppc_uvmem_init checks for Ultravisor support and returns early if
it is not present. Calling kvmppc_uvmem_free at module exit will cause
an Oops:
$ modprobe -r kvm-hv
Oops: Kernel access of bad area, sig: 11 [#1]
NIP: c0789e90 LR: c0789e8c CTR: c0401030
REGS:
Hi Thomas,
On Thu, Mar 19, 2020 at 7:48 AM Thomas Gleixner wrote:
>
> From: Thomas Gleixner
>
> completion uses a wait_queue_head_t to enqueue waiters.
>
> wait_queue_head_t contains a spinlock_t to protect the list of waiters
> which excludes it from being used in truly atomic context on a PREE
On Fri, Feb 21, 2020 at 11:29:50AM -0500, Gustavo Romero wrote:
> On P9 DD2.2 due to a CPU defect some TM instructions need to be emulated by
> KVM. This is handled at first by the hardware raising a softpatch interrupt
> when certain TM instructions that need KVM assistance are executed in the
> g
On Tue, Mar 10, 2020 at 04:11:28PM -0500, Michael Roth wrote:
> The h_cede_tm kvm-unit-test currently fails when run inside an L1 guest
> via the guest/nested hypervisor.
>
> ./run-tests.sh -v
> ...
> TESTNAME=h_cede_tm TIMEOUT=90s ACCEL= ./powerpc/run powerpc/tm.elf -smp
> 2,threads=2 -mac
On Wed, Mar 18, 2020 at 06:22:29PM -0700, Joe Perches wrote:
> On Thu, 2020-03-19 at 12:18 +1100, Paul Mackerras wrote:
> > On Tue, Mar 10, 2020 at 09:51:30PM -0700, Joe Perches wrote:
> > > Convert the various uses of fallthrough comments to fallthrough;
> > >
> > > Done via script
> > > Link:
>
On Tue, Feb 18, 2020 at 03:36:50PM +1100, Michael Ellerman wrote:
> In kvmppc_unmap_free_pte() in book3s_64_mmu_radix.c, we use the
> non-constant value PTE_INDEX_SIZE to clear a PTE page.
>
> We can instead use the constant RADIX_PTE_INDEX_SIZE, because we know
> this code will only be running wh
On Wed, Mar 18, 2020 at 06:43:24PM +0100, Greg Kurz wrote:
> Recent cleanup from Sean Christopherson introduced a use-after-free
> condition that crashes the kernel when shutting down the VM with
> PR KVM. It went unnoticed so far because PR isn't tested/used much
> these days (mostly used for nest
Borislav Petkov writes:
> On Thu, Mar 19, 2020 at 06:25:49PM +0100, Thomas Gleixner wrote:
>> TBH, I don't see how
>>
>> if (force_dma_decrypted(dev))
>> set_memory_encrypted((unsigned long)cpu_addr, 1 << page_order);
>>
>> makes more sense than the above. It's both non-sensical
Hi,
On 3/19/20 3:26 AM, Sebastian Andrzej Siewior wrote:
> On 2020-03-19 03:04:59 [-0700], Christoph Hellwig wrote:
>> But I wonder how alive the whole PS3 support is to start with..
>
> OtherOS can only be used on "old" PS3 which do not have have their
> firmware upgraded past version 3.21, rele
On Thu, Mar 19, 2020 at 07:55:10PM -0300, Fabiano Rosas wrote:
> kvmppc_uvmem_init checks for Ultravisor support and returns early if
> it is not present. Calling kvmppc_uvmem_free at module exit will cause
> an Oops:
>
> $ modprobe -r kvm-hv
>
> Oops: Kernel access of bad area, sig: 11 [#1]
>
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