* [PATCH] powerpc/mm: bail out early when flushing TLB page
@ 2015-01-30 12:08 ` Arseny Solokha
0 siblings, 0 replies; 12+ messages in thread
From: Arseny Solokha @ 2015-01-30 12:08 UTC (permalink / raw)
To: Scott Wood
Cc: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman,
linuxppc-dev, linux-kernel, Arseny Solokha
MMU_NO_CONTEXT is conditionally defined as 0 or (unsigned int)-1. However,
in __flush_tlb_page() a corresponding variable is only tested for open
coded 0, which can cause NULL pointer dereference if `mm' argument was
legitimately passed as such.
Bail out early in case the first argument is NULL, thus eliminate confusion
between different values of MMU_NO_CONTEXT and avoid disabling and then
re-enabling preemption unnecessarily.
Signed-off-by: Arseny Solokha <asolokha@kb.kras.ru>
---
arch/powerpc/mm/tlb_nohash.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index f38ea4d..ab0616b 100644
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -284,8 +284,11 @@ void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
struct cpumask *cpu_mask;
unsigned int pid;
+ if (unlikely(!mm))
+ return;
+
preempt_disable();
- pid = mm ? mm->context.id : 0;
+ pid = mm->context.id;
if (unlikely(pid == MMU_NO_CONTEXT))
goto bail;
cpu_mask = mm_cpumask(mm);
--
2.2.2
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH] powerpc/mm: bail out early when flushing TLB page
@ 2015-01-30 12:08 ` Arseny Solokha
0 siblings, 0 replies; 12+ messages in thread
From: Arseny Solokha @ 2015-01-30 12:08 UTC (permalink / raw)
To: Scott Wood; +Cc: linux-kernel, Arseny Solokha, Paul Mackerras, linuxppc-dev
MMU_NO_CONTEXT is conditionally defined as 0 or (unsigned int)-1. However,
in __flush_tlb_page() a corresponding variable is only tested for open
coded 0, which can cause NULL pointer dereference if `mm' argument was
legitimately passed as such.
Bail out early in case the first argument is NULL, thus eliminate confusion
between different values of MMU_NO_CONTEXT and avoid disabling and then
re-enabling preemption unnecessarily.
Signed-off-by: Arseny Solokha <asolokha@kb.kras.ru>
---
arch/powerpc/mm/tlb_nohash.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index f38ea4d..ab0616b 100644
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -284,8 +284,11 @@ void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
struct cpumask *cpu_mask;
unsigned int pid;
+ if (unlikely(!mm))
+ return;
+
preempt_disable();
- pid = mm ? mm->context.id : 0;
+ pid = mm->context.id;
if (unlikely(pid == MMU_NO_CONTEXT))
goto bail;
cpu_mask = mm_cpumask(mm);
--
2.2.2
^ permalink raw reply related [flat|nested] 12+ messages in thread
* Re: [PATCH] powerpc/mm: bail out early when flushing TLB page
2015-01-30 12:08 ` Arseny Solokha
@ 2015-01-30 21:53 ` Scott Wood
-1 siblings, 0 replies; 12+ messages in thread
From: Scott Wood @ 2015-01-30 21:53 UTC (permalink / raw)
To: Arseny Solokha
Cc: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman,
linuxppc-dev, linux-kernel
On Fri, 2015-01-30 at 19:08 +0700, Arseny Solokha wrote:
> MMU_NO_CONTEXT is conditionally defined as 0 or (unsigned int)-1.
For nohash it is specifically -1.
> However, in __flush_tlb_page() a corresponding variable is only tested
> for open coded 0, which can cause NULL pointer dereference if `mm'
> argument was legitimately passed as such.
>
> Bail out early in case the first argument is NULL, thus eliminate confusion
> between different values of MMU_NO_CONTEXT and avoid disabling and then
> re-enabling preemption unnecessarily.
How did you notice this? Did you see an oops, or was it code
inspection? I'm wondering what codepath gets here with mm == NULL.
-Scott
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH] powerpc/mm: bail out early when flushing TLB page
@ 2015-01-30 21:53 ` Scott Wood
0 siblings, 0 replies; 12+ messages in thread
From: Scott Wood @ 2015-01-30 21:53 UTC (permalink / raw)
To: Arseny Solokha; +Cc: Paul Mackerras, linuxppc-dev, linux-kernel
On Fri, 2015-01-30 at 19:08 +0700, Arseny Solokha wrote:
> MMU_NO_CONTEXT is conditionally defined as 0 or (unsigned int)-1.
For nohash it is specifically -1.
> However, in __flush_tlb_page() a corresponding variable is only tested
> for open coded 0, which can cause NULL pointer dereference if `mm'
> argument was legitimately passed as such.
>
> Bail out early in case the first argument is NULL, thus eliminate confusion
> between different values of MMU_NO_CONTEXT and avoid disabling and then
> re-enabling preemption unnecessarily.
How did you notice this? Did you see an oops, or was it code
inspection? I'm wondering what codepath gets here with mm == NULL.
-Scott
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH] powerpc/mm: bail out early when flushing TLB page
2015-01-30 21:53 ` Scott Wood
@ 2015-01-31 4:18 ` Arseny Solokha
-1 siblings, 0 replies; 12+ messages in thread
From: Arseny Solokha @ 2015-01-31 4:18 UTC (permalink / raw)
To: Scott Wood
Cc: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman,
linuxppc-dev, linux-kernel
> On Fri, 2015-01-30 at 19:08 +0700, Arseny Solokha wrote:
>> MMU_NO_CONTEXT is conditionally defined as 0 or (unsigned int)-1.
>
> For nohash it is specifically -1.
>> However, in __flush_tlb_page() a corresponding variable is only tested
>> for open coded 0, which can cause NULL pointer dereference if `mm'
>> argument was legitimately passed as such.
>>
>> Bail out early in case the first argument is NULL, thus eliminate confusion
>> between different values of MMU_NO_CONTEXT and avoid disabling and then
>> re-enabling preemption unnecessarily.
>
> How did you notice this? Did you see an oops, or was it code
> inspection? I'm wondering what codepath gets here with mm == NULL.
Just a code inspection. It didn't seemed right at the first glance.
Arsény
>
> -Scott
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH] powerpc/mm: bail out early when flushing TLB page
@ 2015-01-31 4:18 ` Arseny Solokha
0 siblings, 0 replies; 12+ messages in thread
From: Arseny Solokha @ 2015-01-31 4:18 UTC (permalink / raw)
To: Scott Wood; +Cc: Paul Mackerras, linuxppc-dev, linux-kernel
> On Fri, 2015-01-30 at 19:08 +0700, Arseny Solokha wrote:
>> MMU_NO_CONTEXT is conditionally defined as 0 or (unsigned int)-1.
>
> For nohash it is specifically -1.
>> However, in __flush_tlb_page() a corresponding variable is only tested
>> for open coded 0, which can cause NULL pointer dereference if `mm'
>> argument was legitimately passed as such.
>>
>> Bail out early in case the first argument is NULL, thus eliminate confusion
>> between different values of MMU_NO_CONTEXT and avoid disabling and then
>> re-enabling preemption unnecessarily.
>
> How did you notice this? Did you see an oops, or was it code
> inspection? I'm wondering what codepath gets here with mm == NULL.
Just a code inspection. It didn't seemed right at the first glance.
Arsény
>
> -Scott
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH] powerpc/mm: bail out early when flushing TLB page
2015-01-30 12:08 ` Arseny Solokha
@ 2015-01-31 20:27 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 12+ messages in thread
From: Benjamin Herrenschmidt @ 2015-01-31 20:27 UTC (permalink / raw)
To: Arseny Solokha
Cc: Scott Wood, Paul Mackerras, Michael Ellerman, linuxppc-dev, linux-kernel
On Fri, 2015-01-30 at 19:08 +0700, Arseny Solokha wrote:
> MMU_NO_CONTEXT is conditionally defined as 0 or (unsigned int)-1. However,
> in __flush_tlb_page() a corresponding variable is only tested for open
> coded 0, which can cause NULL pointer dereference if `mm' argument was
> legitimately passed as such.
>
> Bail out early in case the first argument is NULL, thus eliminate confusion
> between different values of MMU_NO_CONTEXT and avoid disabling and then
> re-enabling preemption unnecessarily.
So the comment above isn't quite right... we don't *test* it for open
coded 0, we test it for MMU_NO_CONTEXT, however we *set* it to 0 for
NULL mm.
This is actually correct... on all except 8xx :-) 0 *is* the PID of the
kernel context, and NULL mm usually means kernel context.
However, it's correct that this function will not deal properly with a
NULL mm for other reasons. It must only be called for user contexts.
Instead of just returning, I would WARN_ON, because if it's ever called
for a kernel page, then it will not do what's expected and that will
need fixing. Just a silent return isn't right.
This is different from returning on MMU_NO_CONTEXT, in this case, we
know there's no active TLB entries for the process, and thus nothing to
flush.
Cheers,
Ben.
> Signed-off-by: Arseny Solokha <asolokha@kb.kras.ru>
> ---
> arch/powerpc/mm/tlb_nohash.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
> index f38ea4d..ab0616b 100644
> --- a/arch/powerpc/mm/tlb_nohash.c
> +++ b/arch/powerpc/mm/tlb_nohash.c
> @@ -284,8 +284,11 @@ void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
> struct cpumask *cpu_mask;
> unsigned int pid;
>
> + if (unlikely(!mm))
> + return;
> +
> preempt_disable();
> - pid = mm ? mm->context.id : 0
Here we test mm, if we pass NULL, that means the kernel mm which has PID
0, which is not MMU_NO_CONTEXT
> ;
> + pid = mm->context.id;
> if (unlikely(pid == MMU_NO_CONTEXT))
> goto bail;
> cpu_mask = mm_cpumask(mm);
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH] powerpc/mm: bail out early when flushing TLB page
@ 2015-01-31 20:27 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 12+ messages in thread
From: Benjamin Herrenschmidt @ 2015-01-31 20:27 UTC (permalink / raw)
To: Arseny Solokha; +Cc: Scott Wood, Paul Mackerras, linuxppc-dev, linux-kernel
On Fri, 2015-01-30 at 19:08 +0700, Arseny Solokha wrote:
> MMU_NO_CONTEXT is conditionally defined as 0 or (unsigned int)-1. However,
> in __flush_tlb_page() a corresponding variable is only tested for open
> coded 0, which can cause NULL pointer dereference if `mm' argument was
> legitimately passed as such.
>
> Bail out early in case the first argument is NULL, thus eliminate confusion
> between different values of MMU_NO_CONTEXT and avoid disabling and then
> re-enabling preemption unnecessarily.
So the comment above isn't quite right... we don't *test* it for open
coded 0, we test it for MMU_NO_CONTEXT, however we *set* it to 0 for
NULL mm.
This is actually correct... on all except 8xx :-) 0 *is* the PID of the
kernel context, and NULL mm usually means kernel context.
However, it's correct that this function will not deal properly with a
NULL mm for other reasons. It must only be called for user contexts.
Instead of just returning, I would WARN_ON, because if it's ever called
for a kernel page, then it will not do what's expected and that will
need fixing. Just a silent return isn't right.
This is different from returning on MMU_NO_CONTEXT, in this case, we
know there's no active TLB entries for the process, and thus nothing to
flush.
Cheers,
Ben.
> Signed-off-by: Arseny Solokha <asolokha@kb.kras.ru>
> ---
> arch/powerpc/mm/tlb_nohash.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
> index f38ea4d..ab0616b 100644
> --- a/arch/powerpc/mm/tlb_nohash.c
> +++ b/arch/powerpc/mm/tlb_nohash.c
> @@ -284,8 +284,11 @@ void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
> struct cpumask *cpu_mask;
> unsigned int pid;
>
> + if (unlikely(!mm))
> + return;
> +
> preempt_disable();
> - pid = mm ? mm->context.id : 0
Here we test mm, if we pass NULL, that means the kernel mm which has PID
0, which is not MMU_NO_CONTEXT
> ;
> + pid = mm->context.id;
> if (unlikely(pid == MMU_NO_CONTEXT))
> goto bail;
> cpu_mask = mm_cpumask(mm);
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH] powerpc/mm: bail out early when flushing TLB page
2015-01-31 20:27 ` Benjamin Herrenschmidt
@ 2015-02-02 5:07 ` Arseny Solokha
-1 siblings, 0 replies; 12+ messages in thread
From: Arseny Solokha @ 2015-02-02 5:07 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Scott Wood, Paul Mackerras, Michael Ellerman, linuxppc-dev, linux-kernel
> On Fri, 2015-01-30 at 19:08 +0700, Arseny Solokha wrote:
>> MMU_NO_CONTEXT is conditionally defined as 0 or (unsigned int)-1. However,
>> in __flush_tlb_page() a corresponding variable is only tested for open
>> coded 0, which can cause NULL pointer dereference if `mm' argument was
>> legitimately passed as such.
>>
>> Bail out early in case the first argument is NULL, thus eliminate confusion
>> between different values of MMU_NO_CONTEXT and avoid disabling and then
>> re-enabling preemption unnecessarily.
>
> So the comment above isn't quite right... we don't *test* it for open
> coded 0, we test it for MMU_NO_CONTEXT, however we *set* it to 0 for
> NULL mm.
>
> This is actually correct... on all except 8xx :-) 0 *is* the PID of the
> kernel context, and NULL mm usually means kernel context.
> However, it's correct that this function will not deal properly with a
> NULL mm for other reasons. It must only be called for user contexts.
>
> Instead of just returning, I would WARN_ON, because if it's ever called
> for a kernel page, then it will not do what's expected and that will
> need fixing. Just a silent return isn't right.
Does this also hold true for __local_flush_tlb_page()? It's called from
local_flush_tlb_page() as follows:
__local_flush_tlb_page(vma ? vma->vm_mm : NULL, vmaddr,
mmu_get_tsize(mmu_virtual_psize), 0);
However, if MMU_NO_CONTEXT is 0 and __local_flush_tlb_page() is called with mm
set to NULL, it's effectively a no-op. What else am I missing?
Thanks,
Arsény
> This is different from returning on MMU_NO_CONTEXT, in this case, we
> know there's no active TLB entries for the process, and thus nothing to
> flush.
>
> Cheers,
> Ben.
>
>> Signed-off-by: Arseny Solokha <asolokha@kb.kras.ru>
>> ---
>> arch/powerpc/mm/tlb_nohash.c | 5 ++++-
>> 1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
>> index f38ea4d..ab0616b 100644
>> --- a/arch/powerpc/mm/tlb_nohash.c
>> +++ b/arch/powerpc/mm/tlb_nohash.c
>> @@ -284,8 +284,11 @@ void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
>> struct cpumask *cpu_mask;
>> unsigned int pid;
>>
>> + if (unlikely(!mm))
>> + return;
>> +
>> preempt_disable();
>> - pid = mm ? mm->context.id : 0
>
> Here we test mm, if we pass NULL, that means the kernel mm which has PID
> 0, which is not MMU_NO_CONTEXT
>> ;
>> + pid = mm->context.id;
>> if (unlikely(pid == MMU_NO_CONTEXT))
>> goto bail;
>> cpu_mask = mm_cpumask(mm);
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH] powerpc/mm: bail out early when flushing TLB page
@ 2015-02-02 5:07 ` Arseny Solokha
0 siblings, 0 replies; 12+ messages in thread
From: Arseny Solokha @ 2015-02-02 5:07 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Scott Wood, Paul Mackerras, linuxppc-dev, linux-kernel
> On Fri, 2015-01-30 at 19:08 +0700, Arseny Solokha wrote:
>> MMU_NO_CONTEXT is conditionally defined as 0 or (unsigned int)-1. However,
>> in __flush_tlb_page() a corresponding variable is only tested for open
>> coded 0, which can cause NULL pointer dereference if `mm' argument was
>> legitimately passed as such.
>>
>> Bail out early in case the first argument is NULL, thus eliminate confusion
>> between different values of MMU_NO_CONTEXT and avoid disabling and then
>> re-enabling preemption unnecessarily.
>
> So the comment above isn't quite right... we don't *test* it for open
> coded 0, we test it for MMU_NO_CONTEXT, however we *set* it to 0 for
> NULL mm.
>
> This is actually correct... on all except 8xx :-) 0 *is* the PID of the
> kernel context, and NULL mm usually means kernel context.
> However, it's correct that this function will not deal properly with a
> NULL mm for other reasons. It must only be called for user contexts.
>
> Instead of just returning, I would WARN_ON, because if it's ever called
> for a kernel page, then it will not do what's expected and that will
> need fixing. Just a silent return isn't right.
Does this also hold true for __local_flush_tlb_page()? It's called from
local_flush_tlb_page() as follows:
__local_flush_tlb_page(vma ? vma->vm_mm : NULL, vmaddr,
mmu_get_tsize(mmu_virtual_psize), 0);
However, if MMU_NO_CONTEXT is 0 and __local_flush_tlb_page() is called with mm
set to NULL, it's effectively a no-op. What else am I missing?
Thanks,
Arsény
> This is different from returning on MMU_NO_CONTEXT, in this case, we
> know there's no active TLB entries for the process, and thus nothing to
> flush.
>
> Cheers,
> Ben.
>
>> Signed-off-by: Arseny Solokha <asolokha@kb.kras.ru>
>> ---
>> arch/powerpc/mm/tlb_nohash.c | 5 ++++-
>> 1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
>> index f38ea4d..ab0616b 100644
>> --- a/arch/powerpc/mm/tlb_nohash.c
>> +++ b/arch/powerpc/mm/tlb_nohash.c
>> @@ -284,8 +284,11 @@ void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
>> struct cpumask *cpu_mask;
>> unsigned int pid;
>>
>> + if (unlikely(!mm))
>> + return;
>> +
>> preempt_disable();
>> - pid = mm ? mm->context.id : 0
>
> Here we test mm, if we pass NULL, that means the kernel mm which has PID
> 0, which is not MMU_NO_CONTEXT
>> ;
>> + pid = mm->context.id;
>> if (unlikely(pid == MMU_NO_CONTEXT))
>> goto bail;
>> cpu_mask = mm_cpumask(mm);
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH] powerpc/mm: warn on flushing tlb page in kernel context
2015-01-30 12:08 ` Arseny Solokha
@ 2015-02-02 5:28 ` Arseny Solokha
-1 siblings, 0 replies; 12+ messages in thread
From: Arseny Solokha @ 2015-02-02 5:28 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: Paul Mackerras, Michael Ellerman, Scott Wood, linuxppc-dev,
linux-kernel, Arseny Solokha
Function __flush_tlb_page() must only be called for user contexts, so
put in extra hardening to warn on calling it for kernel context.
Signed-off-by: Arseny Solokha <asolokha@kb.kras.ru>
---
arch/powerpc/mm/tlb_nohash.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index f38ea4d..cbd3d06 100644
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -284,8 +284,15 @@ void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
struct cpumask *cpu_mask;
unsigned int pid;
+ /*
+ * This function as well as __local_flush_tlb_page() must only be called
+ * for user contexts.
+ */
+ if (unlikely(WARN_ON(!mm)))
+ return;
+
preempt_disable();
- pid = mm ? mm->context.id : 0;
+ pid = mm->context.id;
if (unlikely(pid == MMU_NO_CONTEXT))
goto bail;
cpu_mask = mm_cpumask(mm);
--
2.2.2
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH] powerpc/mm: warn on flushing tlb page in kernel context
@ 2015-02-02 5:28 ` Arseny Solokha
0 siblings, 0 replies; 12+ messages in thread
From: Arseny Solokha @ 2015-02-02 5:28 UTC (permalink / raw)
To: Benjamin Herrenschmidt
Cc: linux-kernel, Paul Mackerras, Scott Wood, Arseny Solokha, linuxppc-dev
Function __flush_tlb_page() must only be called for user contexts, so
put in extra hardening to warn on calling it for kernel context.
Signed-off-by: Arseny Solokha <asolokha@kb.kras.ru>
---
arch/powerpc/mm/tlb_nohash.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c
index f38ea4d..cbd3d06 100644
--- a/arch/powerpc/mm/tlb_nohash.c
+++ b/arch/powerpc/mm/tlb_nohash.c
@@ -284,8 +284,15 @@ void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
struct cpumask *cpu_mask;
unsigned int pid;
+ /*
+ * This function as well as __local_flush_tlb_page() must only be called
+ * for user contexts.
+ */
+ if (unlikely(WARN_ON(!mm)))
+ return;
+
preempt_disable();
- pid = mm ? mm->context.id : 0;
+ pid = mm->context.id;
if (unlikely(pid == MMU_NO_CONTEXT))
goto bail;
cpu_mask = mm_cpumask(mm);
--
2.2.2
^ permalink raw reply related [flat|nested] 12+ messages in thread
end of thread, other threads:[~2015-02-02 5:28 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-01-30 12:08 [PATCH] powerpc/mm: bail out early when flushing TLB page Arseny Solokha
2015-01-30 12:08 ` Arseny Solokha
2015-01-30 21:53 ` Scott Wood
2015-01-30 21:53 ` Scott Wood
2015-01-31 4:18 ` Arseny Solokha
2015-01-31 4:18 ` Arseny Solokha
2015-01-31 20:27 ` Benjamin Herrenschmidt
2015-01-31 20:27 ` Benjamin Herrenschmidt
2015-02-02 5:07 ` Arseny Solokha
2015-02-02 5:07 ` Arseny Solokha
2015-02-02 5:28 ` [PATCH] powerpc/mm: warn on flushing tlb page in kernel context Arseny Solokha
2015-02-02 5:28 ` Arseny Solokha
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