the actual physical
page for a given huge page.
Signed-off-by: Hari Bathini hbath...@linux.vnet.ibm.com
---
defs.h |6 +++-
ppc64.c | 91 ---
2 files changed, 92 insertions(+), 5 deletions(-)
diff --git a/defs.h b/defs.h
index
On Monday 23 January 2017 11:43 PM, Dave Anderson wrote:
- Original Message -
On Saturday 21 January 2017 02:00 AM, Dave Anderson wrote:
- Original Message -
... [cut] ...
Also, the exception frame doesn't even show the [bracketed] type of
exception
that occurred -- it's
On Tuesday 24 January 2017 11:53 PM, Dave Anderson wrote:
- Original Message -
On Monday 23 January 2017 11:43 PM, Dave Anderson wrote:
- Original Message -
On Saturday 21 January 2017 02:00 AM, Dave Anderson wrote:
- Original Message -
... [cut] ...
Also, the
On Wednesday 25 January 2017 01:09 AM, Dave Anderson wrote:
- Original Message -
All right, I'll check in your v2 patch along with the one-line addition to
display the exception frame. For now we'll skip the NIP and LR translation,
since in the case above, it's somewhat confusing.
On Saturday 21 January 2017 02:00 AM, Dave Anderson wrote:
- Original Message -
... [cut] ...
Also, the exception frame doesn't even show the [bracketed] type of exception
that occurred -- it's just a register dump followed by the remainder of the
backtrace. Upon a quick glance,
regs saved for
active tasks before falling back to stack-search method. Also, getting
rid of warnings like "‘is_hugepage’ declared inline after being called".
Signed-off-by: Hari Bathini <hbath...@linux.vnet.ibm.com>
Hari,
I only have 1 sample vmcore generated by FADUMP, and I see that
nings like "‘is_hugepage’ declared inline after being called".
Signed-off-by: Hari Bathini <hbath...@linux.vnet.ibm.com>
---
diskdump.c | 22 ++
ppc64.c| 58 +-
2 files changed, 51 insertions(+), 2
(null) at c000700b3b50 (unreliable)" for
kernel dumps captured with fadump. Trying to use ptregs saved for
active tasks before falling back to stack-search method. Also, getting
rid of warnings like "‘is_hugepage’ declared inline after being called".
Signed-off-by: Hari Bathini <hbath...@li
Without this patch, backtraces of active tasks maybe be of the form
"#0 [c000700b3a90] (null) at c000700b3b50 (unreliable)" for
kernel dumps captured with fadump. This patch uses the ptregs saved
for active tasks before falling back to stack-search method.
Signed-off-by: Ha
be great if someone can test these patches on BOOK3E.
The changes effecting BOOK3E are minimal though.
---
Hari Bathini (6):
ppc64: fix vtop page translation for 4K pages
ppc64: Use kernel terminology for each level in 4-level page table
ppc64/book3s: address changes in kernel v4.5
For 4-level page table, we are referring to level3 as PGD instead of
PUD, which is not inline with how kernel refers to it. This patch
corrects it by referring to level4 as PGD and level3 as PUD.
Signed-off-by: Hari Bathini <hbath...@linux.vnet.ibm.com>
---
defs.h
MMU modes in book3s 64. This patch makes the
corresponding changes here.
Signed-off-by: Hari Bathini <hbath...@linux.vnet.ibm.com>
---
defs.h |2 ++
ppc64.c | 21 +
tools.c | 16
3 files changed, 35 insertions(+), 4 deletions(-)
diff --git a/de
these changes here. While we are here, address a TODO for huge
pages and also, replace all instances of pte_shift with pte_rpn_shift to
be in sync with how it is referred to in the kernel.
Signed-off-by: Hari Bathini <hbath...@linux.vnet.ibm.com>
---
defs.h | 17 +---
ppc64.c
is changed since kernel v4.5 for book3e.
This patch updates the corresponding changes here.
Signed-off-by: Hari Bathini <hbath...@linux.vnet.ibm.com>
---
defs.h | 34 +---
ppc64.c | 108 ++-
2 files changed, 129 inse
mits 849f86a6 & 84c95756. This patch makes the corresponding
changes here.
Signed-off-by: Hari Bathini <hbath...@linux.vnet.ibm.com>
---
ppc64.c | 12 +++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/ppc64.c b/ppc64.c
index 6b89eaa..8733d64 100644
--- a/ppc64
Starting with kernel v4.7, masked bit values are the same for 4K and
64K pagesizes. This patch updates here accordingly.
Signed-off-by: Hari Bathini <hbath...@linux.vnet.ibm.com>
---
defs.h |4
ppc64.c | 14 ++
2 files changed, 14 insertions(+), 4 deletions(-)
diff
Kernel commit 2f18d533757da3899f4bedab0b2c051b080079dc lowered the
max real address to 53 bits. Max the necessary changes here. Without
this patch, vmalloc address translation would fail.
Signed-off-by: Hari Bathini <hbath...@linux.vnet.ibm.com>
---
defs.h |5 +++--
1 file chan
With latest NMI IPI changes, crash_ipi_callback is found multiple times
on the stack. Ensure the chosen symbol relates to an actual backtrace.
Signed-off-by: Hari Bathini <hbath...@linux.vnet.ibm.com>
---
ppc64.c |8
1 file changed, 8 insertions(+)
diff --git a/ppc64.c b/p
Starting with kernel 4.12, the hash page table geometry is updated to
accommodate larger VA range. Update here accordingly.
Signed-off-by: Hari Bathini <hbath...@linux.vnet.ibm.com>
---
defs.h |4
ppc64.c | 18 ++
2 files changed, 18 insertions(+), 4 del
On Thursday 09 November 2017 10:13 PM, Dave Anderson wrote:
- Original Message -
Starting with kernel 4.12, the hash page table geometry is updated to
accommodate larger VA range. Update here accordingly.
Signed-off-by: Hari Bathini <hbath...@linux.vnet.ibm.com>
---
changes
Starting with kernel 4.12, the hash page table geometry is updated to
accommodate larger VA range. Update here accordingly.
Signed-off-by: Hari Bathini <hbath...@linux.vnet.ibm.com>
---
changes in v1:
* Kernel commit 92d9dfda8b54 reverted the geometry update
for 4K hash pagetable. So, un
Since kernel commit c2b4d8b7417a ("powerpc/mm/hash64: Increase the VA
range"), the max virtual (effective) address value has been increased
to 4PB. Update page table index values accordingly.
Signed-off-by: Hari Bathini
---
defs.h |1 +
ppc64.c |5 -
2 files changed, 5
on exception frames.
Signed-off-by: Hari Bathini
---
ppc64.c | 140 +--
1 file changed, 99 insertions(+), 41 deletions(-)
diff --git a/ppc64.c b/ppc64.c
index f5d0dac..03fecd3 100644
--- a/ppc64.c
+++ b/ppc64.c
@@ -2093,15 +2093,10
Add PPC64 specific flag for kernels running on platforms based on
OPAL firmware. Use this flag before processing commands specific to
OPAL based systems.
Signed-off-by: Hari Bathini
---
defs.h |8
ppc64.c | 36
2 files changed, 24 insertions
On OPAL based systems, when a thread is running an OPAL API, the stack
pointer and instruction pointer would be pointing at OPAL address but
'bt' output for such thread would complain that the stack pointer is
invalid. Update error/log message for better context.
Signed-off-by: Hari Bathini
With kernel commit 7d4340bb92a9 ("powerpc/mm: Increase MAX_PHYSMEM_BITS
to 128TB with SPARSEMEM_VMEMMAP config"), MAX_PHYSMEM_BITS is bumped up
to 47. Make the appropriate update here.
Signed-off-by: Hari Bathini
---
defs.h |1 +
ppc64.c |5 -
2 files changed, 5 insert
With kernel commit 4ffe713b7587 ("powerpc/mm: Increase the max addressable
memory to 2PB"), MAX_PHYSMEM_BITS is bumped up to 51 for SPARSEMEM_VMEMMAP
and SPARSEMEM_EXTREME case. Make the appropriate update here.
Signed-off-by: Hari Bathini
---
defs.h |1 +
ppc6
lue".
The patch has been ACK'd offline by Hari Bathini.
Thanks,
Dave
--
Crash-utility mailing list
Crash-utility@redhat.com
https://www.redhat.com/mailman/listinfo/crash-utility
gt;random == 0.
Signed-off-by: Hari Bathini
---
memory.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/memory.c b/memory.c
index ccc2944..c2433eb 100644
--- a/memory.c
+++ b/memory.c
@@ -19244,7 +19244,7 @@ count_free_objects(struct meminfo *si, ulong freelist)
sta
optimize while listing the other two options
as TODO items for follow-up.
Signed-off-by: Hari Bathini
---
On a system with about 1500 CPUs 165K running tasks, it was taking
about a day to get to the crash prompt without this patch, while it
takes only about 5-10 mins with this change..
task.
searching for the object file under /usr/lib/debug/lib/modules
directory.
Signed-off-by: Naveen N. Rao
Signed-off-by: Hari Bathini
---
kernel.c | 13 -
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/kernel.c b/kernel.c
index 36fdea2..b2c8a0c 100644
--- a/kernel.c
+++ b
ppc64_paca_init() function is specifically used to initialize percpu
data_offset for kernels older than v2.6.36. So, the name is slightly
misleading. Rename it to ppc64_paca_percpu_offset_init to reflect its
purpose.
Signed-off-by: Hari Bathini
---
* No changes in v2.
ppc64.c | 9
->machspec to optimize code and improve readability.
Changes in v2:
* Print "(unused)", if hwintrstack is not being used.
* Avoid using variable length array for paca_ptrs.
* With 'mach' command, print emergency stack data by default
(no special option).
Hari Bathini (6):
ppc64: fix bt
Passing '-S' option to 'bt' command was intended to specify the stack
pointer manually. But get_stack_frame() handling on ppc64 is ignoring
this option altogether. Fix it.
Signed-off-by: Hari Bathini
---
* No changes in v2.
ppc64.c | 16
1 file changed, 16 insertions
On 04/07/22 8:29 am, HAGIO KAZUHITO(萩尾 一仁) wrote:
Hi Hari
thank you for the patches.
On 2022/06/29 4:19, Hari Bathini wrote:
Only older kernel (v2.4) used h/w interrupt stack to store frames when
CPU received IPI. Memory used for this in 'struct machine_specific' is
useless for later
machdpep->machspec is referred to multiple times. The compiler would
likely optimize this but nonetheless, use a variable to optimize in
coding and also improve readability. No functional change.
Signed-off-by: Hari Bathini
---
* No changes in v2.
ppc64.c |
Print top address of emergency stacks with 'mach' command.
Signed-off-by: Hari Bathini
---
Changes in v2:
* With 'mach' command, print emergency stack data by default
(no special option).
ppc64.c | 40
1 file changed, 40 insertions(+)
diff --git
backtrace is processed appropriately even when
a CPU is in any one of these emergency stacks. Also, if stack info
cannot be found, print that message always instead of only when
verbose logs are enabled.
Signed-off-by: Hari Bathini
---
Changes in v2:
* Avoid using variable length array for paca_ptrs
being wasted.
Signed-off-by: Hari Bathini
---
Changes in v2:
* Print "(unused)", if hwintrstack is not being used.
defs.h | 2 +-
ppc64.c | 51 +--
2 files changed, 22 insertions(+), 31 deletions(-)
diff --git a/defs.h b/defs.h
ind
On 04/07/22 2:09 pm, HAGIO KAZUHITO(萩尾 一仁) wrote:
On 2022/07/04 14:25, Hari Bathini wrote:
A CPU could be in an emergency stack when it is running in real mode
or any special scenario like TM bad thing. Also, there are dedicated
emergency stacks for machine check and system reset interrupt
On 04/07/22 2:14 pm, HAGIO KAZUHITO(萩尾 一仁) wrote:
On 2022/07/04 14:25, Hari Bathini wrote:
This patch series fixes a couple of issues with bt on ppc64 and also
does some code cleanup.
Patch #1 fixes the broken '-S' option on ppc64. The next patch changes
h/w interrupt stack allocation
being wasted.
Signed-off-by: Hari Bathini
---
defs.h | 2 +-
ppc64.c | 48 +++-
2 files changed, 20 insertions(+), 30 deletions(-)
diff --git a/defs.h b/defs.h
index 7d3b734..d1d3ea9 100644
--- a/defs.h
+++ b/defs.h
@@ -6303,7 +6303,7 @@ struct
Add '-e' option to 'mach' command to list top address of all emergency
stacks of all present CPUs.
Signed-off-by: Hari Bathini
---
help.c | 31 +++
ppc64.c | 43 ++-
2 files changed, 73 insertions(+), 1 deletion(-)
diff --git
machdpep->machspec is referred to multiple times. The compiler would
likely optimize this but nonetheless, use a variable to optimize in
coding and also improve readability. No functional change.
Signed-off-by: Hari Bathini
---
ppc64.c |
->machspec to optimize code and improve readability.
Hari Bathini (6):
ppc64: fix bt for '-S' case
ppc64: dynamically allocate h/w interrupt stack
ppc64: rename ppc64_paca_init to ppc64_paca_percpu_offset_init
ppc64: handle backtrace when CPU is in an emerency stack
ppc64: print emergency sta
Passing '-S' option to 'bt' command was intended to specify the stack
pointer manually. But get_stack_frame() handling on ppc64 is ignoring
this option altogether. Fix it.
Signed-off-by: Hari Bathini
---
ppc64.c | 16
1 file changed, 16 insertions(+)
diff --git a/ppc64.c b
backtrace is processed appropriately even when
a CPU is in any one of these emergency stacks. Also, if stack info
cannot be found, print that message always instead of only when
verbose logs are enabled.
Signed-off-by: Hari Bathini
---
defs.h | 12
ppc64.c | 196
ppc64_paca_init() function is specifically used to initialize percpu
data_offset for kernels older than v2.6.36. So, the name is slightly
misleading. Rename it to ppc64_paca_percpu_offset_init to reflect its
purpose.
Signed-off-by: Hari Bathini
---
ppc64.c | 9 +
1 file changed, 5
which allows the crash move on.
Reported-by: Dave Wysochanski
Signed-off-by: Lianbo Jiang
Looks good to me!
Acked-by: Hari Bathini
---
ppc64.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/ppc64.c b/ppc64.c
index 4ea1f7c0c6f8..f94b402ec64d 100644
--- a/
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