by the architecture backend code to read from new memory:
* elfcorehdr_alloc: Allocate ELF header
* elfcorehdr_free: Free the memory of the ELF header
* elfcorehdr_read: Read from ELF header
* elfcorehdr_read_notes: Read from ELF notes
Signed-off-by: Michael Holzheu holz...@linux.vnet.ibm.com
Acked
):
s390/vmcore: Implement remap_oldmem_pfn_range for s390
Michael Holzheu (5):
vmcore: Introduce ELF header in new memory feature
s390/vmcore: Use ELF header in new memory feature
vmcore: Introduce remap_oldmem_pfn_range()
vmcore: Enable /proc/vmcore mmap for s390
s390/vmcore: Use vmcore
On Thu, 18 Jul 2013 09:27:57 -0400
Vivek Goyal wrote:
> On Thu, Jul 18, 2013 at 12:40:04PM +0200, Michael Holzheu wrote:
> > On Wed, 17 Jul 2013 17:42:07 -0400
> > Vivek Goyal wrote:
> > > On Wed, Jul 17, 2013 at 06:00:49PM +0200, Michael Holzh
On Wed, 17 Jul 2013 17:42:07 -0400
Vivek Goyal wrote:
> On Wed, Jul 17, 2013 at 06:00:49PM +0200, Michael Holzheu wrote:
[snip]
> > But this is all additional effort now and would not be necessary if we
> > integrate this patch series in 3.11.
> >
> > Perhaps we sh
On Wed, 17 Jul 2013 17:42:07 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Wed, Jul 17, 2013 at 06:00:49PM +0200, Michael Holzheu wrote:
[snip]
But this is all additional effort now and would not be necessary if we
integrate this patch series in 3.11.
Perhaps we should let Andrew
On Thu, 18 Jul 2013 09:27:57 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Thu, Jul 18, 2013 at 12:40:04PM +0200, Michael Holzheu wrote:
On Wed, 17 Jul 2013 17:42:07 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Wed, Jul 17, 2013 at 06:00:49PM +0200, Michael Holzheu wrote:
[snip
> On Tue, Jul 16, 2013 at 06:18:10PM +0200, Michael Holzheu wrote:
> > Hello Andrew,
> >
> > Here a new kdump patch series that we have discussed with Vivek and
> > Hatayama during the last months.
> >
> > Besides of the feature described below, this p
On Tue, Jul 16, 2013 at 06:18:10PM +0200, Michael Holzheu wrote:
Hello Andrew,
Here a new kdump patch series that we have discussed with Vivek and
Hatayama during the last months.
Besides of the feature described below, this patch series also fixes a
regression on s390
From: Jan Willeke
This patch introduces the s390 specific way to map pages from oldmem.
The memory area below OLDMEM_SIZE is mapped with offset OLDMEM_BASE.
The other old memory is mapped directly.
Signed-off-by: Jan Willeke
Signed-off-by: Michael Holzheu
---
arch/s390/kernel/crash_dump.c
This patch now exchanges the old relocate mechanism with the new
arch function call override mechanism that allows to create the ELF
core header in the 2nd kernel.
Signed-off-by: Michael Holzheu
---
arch/s390/kernel/crash_dump.c | 81 ---
1 file changed
.
This handler works as follows:
* Get already available or new page from page cache (find_or_create_page)
* Check if /proc/vmcore page is filled with data (PageUptodate)
* If yes:
Return that page
* If no:
Fill page using __vmcore_read(), set PageUptodate, and return page
Signed-off-by: Michael Holzheu
py_oldmem_page() copies from HSA for memory below HSA_SIZE
- copy_oldmem_page() copies from real memory for memory above HSA_SIZE
---
Jan Willeke (1):
s390/vmcore: Implement remap_oldmem_pfn_range for s390
Michael Holzheu (4):
vmcore: Introduce ELF header in new memory feature
s390/v
by the architecture backend code to read from new memory:
* elfcorehdr_alloc: Allocate ELF header
* elfcorehdr_free: Free the memory of the ELF header
* elfcorehdr_read: Read from ELF header
* elfcorehdr_read_notes: Read from ELF notes
Signed-off-by: Michael Holzheu
Acked-by: Vivek Goyal
---
fs
This patch modifies the s390 copy_oldmem_page() and remap_oldmem_pfn_range()
function for zfcpdump to read from the HSA memory if memory below HSA_SIZE
bytes is requested. Otherwise real memory is used.
Signed-off-by: Michael Holzheu
---
arch/s390/Kconfig | 3 +-
arch/s390/include
On Tue, 16 Jul 2013 10:04:18 -0400
Vivek Goyal wrote:
> On Tue, Jul 16, 2013 at 11:25:27AM +0200, Michael Holzheu wrote:
>
> [..]
> > > > Hello Vivek and Andrew,
> > > >
> > > > We just realized that Hatayama's mmap patches went into v3.11-rc1. This
On Mon, 15 Jul 2013 10:27:08 -0400
Vivek Goyal wrote:
> On Mon, Jul 15, 2013 at 03:44:51PM +0200, Michael Holzheu wrote:
> > On Tue, 2 Jul 2013 11:42:14 -0400
> > Vivek Goyal wrote:
> >
> > > On Mon, Jul 01, 2013 at 09:32:37PM +0200, Michael Holzheu wrote:
>
On Mon, 15 Jul 2013 10:27:08 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Mon, Jul 15, 2013 at 03:44:51PM +0200, Michael Holzheu wrote:
On Tue, 2 Jul 2013 11:42:14 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Mon, Jul 01, 2013 at 09:32:37PM +0200, Michael Holzheu wrote
On Tue, 16 Jul 2013 10:04:18 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Tue, Jul 16, 2013 at 11:25:27AM +0200, Michael Holzheu wrote:
[..]
Hello Vivek and Andrew,
We just realized that Hatayama's mmap patches went into v3.11-rc1. This
currently
breaks s390 kdump
This patch modifies the s390 copy_oldmem_page() and remap_oldmem_pfn_range()
function for zfcpdump to read from the HSA memory if memory below HSA_SIZE
bytes is requested. Otherwise real memory is used.
Signed-off-by: Michael Holzheu holz...@linux.vnet.ibm.com
---
arch/s390/Kconfig
by the architecture backend code to read from new memory:
* elfcorehdr_alloc: Allocate ELF header
* elfcorehdr_free: Free the memory of the ELF header
* elfcorehdr_read: Read from ELF header
* elfcorehdr_read_notes: Read from ELF notes
Signed-off-by: Michael Holzheu holz...@linux.vnet.ibm.com
Acked
.
This handler works as follows:
* Get already available or new page from page cache (find_or_create_page)
* Check if /proc/vmcore page is filled with data (PageUptodate)
* If yes:
Return that page
* If no:
Fill page using __vmcore_read(), set PageUptodate, and return page
Signed-off-by: Michael Holzheu
for memory below HSA_SIZE
- copy_oldmem_page() copies from real memory for memory above HSA_SIZE
---
Jan Willeke (1):
s390/vmcore: Implement remap_oldmem_pfn_range for s390
Michael Holzheu (4):
vmcore: Introduce ELF header in new memory feature
s390/vmcore: Use ELF header in new memory
This patch now exchanges the old relocate mechanism with the new
arch function call override mechanism that allows to create the ELF
core header in the 2nd kernel.
Signed-off-by: Michael Holzheu holz...@linux.vnet.ibm.com
---
arch/s390/kernel/crash_dump.c | 81
From: Jan Willeke will...@de.ibm.com
This patch introduces the s390 specific way to map pages from oldmem.
The memory area below OLDMEM_SIZE is mapped with offset OLDMEM_BASE.
The other old memory is mapped directly.
Signed-off-by: Jan Willeke will...@de.ibm.com
Signed-off-by: Michael Holzheu
On Tue, 2 Jul 2013 11:42:14 -0400
Vivek Goyal wrote:
> On Mon, Jul 01, 2013 at 09:32:37PM +0200, Michael Holzheu wrote:
> > For zfcpdump we can't map the HSA storage because it is only available
> > via a read interface. Therefore, for the new vmcore mmap feature we have
>
On Tue, 2 Jul 2013 11:42:14 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Mon, Jul 01, 2013 at 09:32:37PM +0200, Michael Holzheu wrote:
For zfcpdump we can't map the HSA storage because it is only available
via a read interface. Therefore, for the new vmcore mmap feature we have
introduce
On Wed, 10 Jul 2013 18:50:18 +0900
HATAYAMA Daisuke wrote:
[snip]
> (2013/07/10 17:42), Michael Holzheu wrote:
> > My suggestion is to add the WARN_ONCE() for #ifndef CONFIG_S390. This has
> > the same
> > effect as your suggestion for all architectures besides of s390.
Hello Hatayama,
On Tue, 09 Jul 2013 14:49:48 +0900
HATAYAMA Daisuke wrote:
> (2013/07/08 23:28), Vivek Goyal wrote:
> > On Mon, Jul 08, 2013 at 11:28:39AM +0200, Michael Holzheu wrote:
> >> On Mon, 08 Jul 2013 14:32:09 +0900
> >> HATAYAMA Daisuke wrote:
[sni
Hello Hatayama,
On Tue, 09 Jul 2013 14:49:48 +0900
HATAYAMA Daisuke d.hatay...@jp.fujitsu.com wrote:
(2013/07/08 23:28), Vivek Goyal wrote:
On Mon, Jul 08, 2013 at 11:28:39AM +0200, Michael Holzheu wrote:
On Mon, 08 Jul 2013 14:32:09 +0900
HATAYAMA Daisuke d.hatay...@jp.fujitsu.com wrote
On Wed, 10 Jul 2013 18:50:18 +0900
HATAYAMA Daisuke d.hatay...@jp.fujitsu.com wrote:
[snip]
(2013/07/10 17:42), Michael Holzheu wrote:
My suggestion is to add the WARN_ONCE() for #ifndef CONFIG_S390. This has
the same
effect as your suggestion for all architectures besides of s390
On Mon, 08 Jul 2013 14:32:09 +0900
HATAYAMA Daisuke wrote:
> (2013/07/02 4:32), Michael Holzheu wrote:
> > For zfcpdump we can't map the HSA storage because it is only available
> > via a read interface. Therefore, for the new vmcore mmap feature we have
> > introduce a ne
On Mon, 08 Jul 2013 14:32:09 +0900
HATAYAMA Daisuke d.hatay...@jp.fujitsu.com wrote:
(2013/07/02 4:32), Michael Holzheu wrote:
For zfcpdump we can't map the HSA storage because it is only available
via a read interface. Therefore, for the new vmcore mmap feature we have
introduce a new
On Wed, 3 Jul 2013 10:15:29 -0400
Vivek Goyal wrote:
> On Wed, Jul 03, 2013 at 09:59:13AM +0200, Michael Holzheu wrote:
> > On Tue, 2 Jul 2013 12:23:23 -0400
> > Vivek Goyal wrote:
> >
> > > On Mon, Jul 01, 2013 at 09:32:36PM +0200, Michael Holzheu wrote:
>
On Tue, 2 Jul 2013 11:42:14 -0400
Vivek Goyal wrote:
> On Mon, Jul 01, 2013 at 09:32:37PM +0200, Michael Holzheu wrote:
[snip]
> > This handler works as follows:
> >
> > * Get already available or new page from page cache (find_or_create_page)
> > * Check if
On Tue, 2 Jul 2013 12:23:23 -0400
Vivek Goyal wrote:
> On Mon, Jul 01, 2013 at 09:32:36PM +0200, Michael Holzheu wrote:
>
> [..]
> > +ssize_t elfcorehdr_read(char *buf, size_t count, u64 *ppos)
> > +{
> > + void *src = (void *)(unsigned long)*ppos;
> > +
>
On Tue, 2 Jul 2013 12:23:23 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Mon, Jul 01, 2013 at 09:32:36PM +0200, Michael Holzheu wrote:
[..]
+ssize_t elfcorehdr_read(char *buf, size_t count, u64 *ppos)
+{
+ void *src = (void *)(unsigned long)*ppos;
+
+ src = elfcorehdr_newmem
On Tue, 2 Jul 2013 11:42:14 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Mon, Jul 01, 2013 at 09:32:37PM +0200, Michael Holzheu wrote:
[snip]
This handler works as follows:
* Get already available or new page from page cache (find_or_create_page)
* Check if /proc/vmcore page
On Wed, 3 Jul 2013 10:15:29 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Wed, Jul 03, 2013 at 09:59:13AM +0200, Michael Holzheu wrote:
On Tue, 2 Jul 2013 12:23:23 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Mon, Jul 01, 2013 at 09:32:36PM +0200, Michael Holzheu wrote
.
This handler works as follows:
* Get already available or new page from page cache (find_or_create_page)
* Check if /proc/vmcore page is filled with data (PageUptodate)
* If yes:
Return that page
* If no:
Fill page using __vmcore_read(), set PageUptodate, and return page
Signed-off-by: Michael Holzheu
This patch now exchanges the old relocate mechanism with the new
arch function call override mechanism that allows to create the ELF
core header in the 2nd kernel.
Signed-off-by: Michael Holzheu
---
arch/s390/kernel/crash_dump.c | 81 ---
1 file changed
This patch modifies the s390 copy_oldmem_page() and remap_oldmem_pfn_range()
function for zfcpdump to read from the HSA memory if memory below HSA_SIZE
bytes is requested. Otherwise real memory is used.
Signed-off-by: Michael Holzheu
---
arch/s390/Kconfig | 3 +-
arch/s390/include
by the architecture backend code to read from new memory:
* elfcorehdr_alloc: Allocate ELF header
* elfcorehdr_free: Free the memory of the ELF header
* elfcorehdr_read: Read from ELF header
* elfcorehdr_read_notes: Read from ELF notes
Signed-off-by: Michael Holzheu
---
fs/proc/vmcore.c
nt remap_oldmem_pfn_range for s390
Michael Holzheu (4):
vmcore: Introduce ELF header in new memory feature
s390/vmcore: Use ELF header in new memory feature
vmcore: Introduce remap_oldmem_pfn_range()
s390/vmcore: Use vmcore for zfcpdump
arch/s390/Kconfig | 3 +-
arch/s390/
From: Jan Willeke
This patch introduces the s390 specific way to map pages from oldmem.
The memory area below OLDMEM_SIZE is mapped with offset OLDMEM_BASE.
The other old memory is mapped directly.
Signed-off-by: Jan Willeke
Signed-off-by: Michael Holzheu
---
arch/s390/kernel/crash_dump.c
On Mon, 1 Jul 2013 13:37:27 -0400
Vivek Goyal wrote:
> On Fri, Jun 28, 2013 at 10:15:52AM +0200, Michael Holzheu wrote:
> > On Thu, 27 Jun 2013 16:23:34 -0400
> > Vivek Goyal wrote:
> >
> > > On Thu, Jun 27, 2013 at 03:32:02PM -0400, Vivek Goyal wrote:
> &g
On Mon, 1 Jul 2013 13:37:27 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Fri, Jun 28, 2013 at 10:15:52AM +0200, Michael Holzheu wrote:
On Thu, 27 Jun 2013 16:23:34 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Thu, Jun 27, 2013 at 03:32:02PM -0400, Vivek Goyal wrote:
On Fri, Jun
From: Jan Willeke will...@de.ibm.com
This patch introduces the s390 specific way to map pages from oldmem.
The memory area below OLDMEM_SIZE is mapped with offset OLDMEM_BASE.
The other old memory is mapped directly.
Signed-off-by: Jan Willeke will...@de.ibm.com
Signed-off-by: Michael Holzheu
by the architecture backend code to read from new memory:
* elfcorehdr_alloc: Allocate ELF header
* elfcorehdr_free: Free the memory of the ELF header
* elfcorehdr_read: Read from ELF header
* elfcorehdr_read_notes: Read from ELF notes
Signed-off-by: Michael Holzheu holz...@linux.vnet.ibm.com
---
fs
Michael Holzheu (4):
vmcore: Introduce ELF header in new memory feature
s390/vmcore: Use ELF header in new memory feature
vmcore: Introduce remap_oldmem_pfn_range()
s390/vmcore: Use vmcore for zfcpdump
arch/s390/Kconfig | 3 +-
arch/s390/include/asm/sclp.h | 1 +
arch/s390
This patch now exchanges the old relocate mechanism with the new
arch function call override mechanism that allows to create the ELF
core header in the 2nd kernel.
Signed-off-by: Michael Holzheu holz...@linux.vnet.ibm.com
---
arch/s390/kernel/crash_dump.c | 81
This patch modifies the s390 copy_oldmem_page() and remap_oldmem_pfn_range()
function for zfcpdump to read from the HSA memory if memory below HSA_SIZE
bytes is requested. Otherwise real memory is used.
Signed-off-by: Michael Holzheu holz...@linux.vnet.ibm.com
---
arch/s390/Kconfig
.
This handler works as follows:
* Get already available or new page from page cache (find_or_create_page)
* Check if /proc/vmcore page is filled with data (PageUptodate)
* If yes:
Return that page
* If no:
Fill page using __vmcore_read(), set PageUptodate, and return page
Signed-off-by: Michael Holzheu
On Thu, 27 Jun 2013 16:23:34 -0400
Vivek Goyal wrote:
> On Thu, Jun 27, 2013 at 03:32:02PM -0400, Vivek Goyal wrote:
> > On Fri, Jun 21, 2013 at 04:17:03PM +0200, Michael Holzheu wrote:
> > > On Fri, 14 Jun 2013 14:54:02 -0400
> > > Vivek Goyal wrote:
[snip]
> T
On Thu, 27 Jun 2013 16:23:34 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Thu, Jun 27, 2013 at 03:32:02PM -0400, Vivek Goyal wrote:
On Fri, Jun 21, 2013 at 04:17:03PM +0200, Michael Holzheu wrote:
On Fri, 14 Jun 2013 14:54:02 -0400
Vivek Goyal vgo...@redhat.com wrote:
[snip]
Thinking
On Fri, 14 Jun 2013 14:54:02 -0400
Vivek Goyal wrote:
> On Fri, Jun 07, 2013 at 06:55:57PM +0200, Michael Holzheu wrote:
>
> [..]
> > @@ -935,10 +967,17 @@ static int __init vmcore_init(void)
> > {
> > int rc = 0;
> >
> > - /* If elfcorehdr= h
On Fri, 14 Jun 2013 14:54:54 -0400
Vivek Goyal wrote:
> On Fri, Jun 07, 2013 at 06:55:56PM +0200, Michael Holzheu wrote:
>
> [..]
> > In this patch series I did not include the discussed ELF header swap trick
> > patch because with the ELF header read functions
On Fri, 14 Jun 2013 14:54:54 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Fri, Jun 07, 2013 at 06:55:56PM +0200, Michael Holzheu wrote:
[..]
In this patch series I did not include the discussed ELF header swap trick
patch because with the ELF header read functions this patch currently
On Fri, 14 Jun 2013 14:54:02 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Fri, Jun 07, 2013 at 06:55:57PM +0200, Michael Holzheu wrote:
[..]
@@ -935,10 +967,17 @@ static int __init vmcore_init(void)
{
int rc = 0;
- /* If elfcorehdr= has been passed in cmdline, then capture
On Thu, 13 Jun 2013 10:32:48 +0900
HATAYAMA Daisuke wrote:
> > Perhaps one open issue remains:
> >
> > Can we remove the page from the page cache if __read_vmcore() fails?
> >
>
> Yes, use page_cache_release() after unlocking the page like:
>
> if (__read_vmcore(buf,
On Thu, 13 Jun 2013 10:32:48 +0900
HATAYAMA Daisuke d.hatay...@jp.fujitsu.com wrote:
Perhaps one open issue remains:
Can we remove the page from the page cache if __read_vmcore() fails?
Yes, use page_cache_release() after unlocking the page like:
if
On Wed, 12 Jun 2013 08:47:52 +0900
HATAYAMA Daisuke wrote:
> (2013/06/08 1:56), Michael Holzheu wrote:
[snip]
> > +static int remap_oldmem_pfn_range_zfcpdump(struct vm_area_struct *vma,
> > + uns
On Tue, 11 Jun 2013 21:42:15 +0900
HATAYAMA Daisuke wrote:
> 2013/6/11 Michael Holzheu :
> > On Mon, 10 Jun 2013 22:40:24 +0900
> > HATAYAMA Daisuke wrote:
> >
> >> 2013/6/8 Michael Holzheu :
> >>
> >> > @@ -225,6 +251,56 @@ static ssize_t
On Tue, 11 Jun 2013 21:42:15 +0900
HATAYAMA Daisuke d.hatay...@gmail.com wrote:
2013/6/11 Michael Holzheu holz...@linux.vnet.ibm.com:
On Mon, 10 Jun 2013 22:40:24 +0900
HATAYAMA Daisuke d.hatay...@gmail.com wrote:
2013/6/8 Michael Holzheu holz...@linux.vnet.ibm.com:
cut
@@ -225,6
On Wed, 12 Jun 2013 08:47:52 +0900
HATAYAMA Daisuke d.hatay...@jp.fujitsu.com wrote:
(2013/06/08 1:56), Michael Holzheu wrote:
[snip]
+static int remap_oldmem_pfn_range_zfcpdump(struct vm_area_struct *vma,
+ unsigned long from
On Mon, 10 Jun 2013 22:40:24 +0900
HATAYAMA Daisuke wrote:
> 2013/6/8 Michael Holzheu :
>
> > @@ -225,6 +251,56 @@ static ssize_t read_vmcore(struct file *file, char
> > __user *buffer,
> > return acc;
> > }
> >
> > +static ssize_t read_vmc
On Mon, 10 Jun 2013 22:40:24 +0900
HATAYAMA Daisuke wrote:
> > +static int mmap_vmcore_fault(struct vm_area_struct *vma, struct vm_fault
> > *vmf)
> > +{
> > + struct address_space *mapping = vma->vm_private_data;
> > + pgoff_t index = vmf->pgoff;
> > + struct page *page;
> >
On Mon, 10 Jun 2013 22:35:30 +0900
HATAYAMA Daisuke wrote:
> 2013/6/8 Michael Holzheu :
>
> > @@ -935,10 +967,17 @@ static int __init vmcore_init(void)
> > {
> > int rc = 0;
> >
> > - /* If elfcorehdr= has been passed in
On Mon, 10 Jun 2013 22:36:57 +0900
HATAYAMA Daisuke wrote:
> > -static int setup_kdump_elfcorehdr(void)
> > +void elfcorehdr_free(void)
> > {
> > - size_t elfcorebuf_sz;
> > - char *elfcorebuf;
> > -
> > - if (!OLDMEM_BASE || is_kdump_kernel())
> > - return
On Sat, 8 Jun 2013 11:38:00 +0400
Maxim Uvarov wrote:
[snip]
> > +static int copy_to(void *target, void *src, size_t size, int
> > userbuf) +{
> > + if (userbuf) {
> > + if (copy_to_user(target, src, size))
> > + return -EFAULT;
> > +
On Sat, 8 Jun 2013 11:38:00 +0400
Maxim Uvarov muva...@gmail.com wrote:
[snip]
+static int copy_to(void *target, void *src, size_t size, int
userbuf) +{
+ if (userbuf) {
+ if (copy_to_user(target, src, size))
+ return -EFAULT;
+
On Mon, 10 Jun 2013 22:36:57 +0900
HATAYAMA Daisuke d.hatay...@gmail.com wrote:
-static int setup_kdump_elfcorehdr(void)
+void elfcorehdr_free(void)
{
- size_t elfcorebuf_sz;
- char *elfcorebuf;
-
- if (!OLDMEM_BASE || is_kdump_kernel())
- return
On Mon, 10 Jun 2013 22:35:30 +0900
HATAYAMA Daisuke d.hatay...@gmail.com wrote:
2013/6/8 Michael Holzheu holz...@linux.vnet.ibm.com:
cut
@@ -935,10 +967,17 @@ static int __init vmcore_init(void)
{
int rc = 0;
- /* If elfcorehdr= has been passed in cmdline, then capture
On Mon, 10 Jun 2013 22:40:24 +0900
HATAYAMA Daisuke d.hatay...@gmail.com wrote:
+static int mmap_vmcore_fault(struct vm_area_struct *vma, struct vm_fault
*vmf)
+{
+ struct address_space *mapping = vma-vm_private_data;
+ pgoff_t index = vmf-pgoff;
+ struct page
On Mon, 10 Jun 2013 22:40:24 +0900
HATAYAMA Daisuke d.hatay...@gmail.com wrote:
2013/6/8 Michael Holzheu holz...@linux.vnet.ibm.com:
cut
@@ -225,6 +251,56 @@ static ssize_t read_vmcore(struct file *file, char
__user *buffer,
return acc;
}
+static ssize_t read_vmcore(struct
This patch now exchanges the old relocate mechanism with the new
arch function call override mechanism that allows to create the ELF
core header in the 2nd kernel.
Signed-off-by: Michael Holzheu
---
arch/s390/kernel/crash_dump.c | 70 ++-
1 file changed
This patch modifies the s390 copy_oldmem_page() and remap_oldmem_pfn_range()
function for zfcpdump to read from the HSA memory if memory below HSA_SIZE
bytes is requested. Otherwise real memory is used.
Signed-off-by: Michael Holzheu
---
arch/s390/Kconfig | 3 +-
arch/s390/include
by the architecture backend code to read from new memory:
* elfcorehdr_alloc: Return the address and size of the ELF header
* elfcorehdr_free: Free the memory of the ELF header
* elfcorehdr_read: Read from ELF header
* elfcorehdr_read_notes: Read from ELF notes
Signed-off-by: Michael Holzheu
---
fs
oldmem_page() copies from HSA for memory below HSA_SIZE
- copy_oldmem_page() copies from real memory for memory above HSA_SIZE
Jan Willeke (1):
s390/kdump/mmap: Implement remap_oldmem_pfn_range for s390
Michael Holzheu (4):
kdump: Introduce ELF header in new memory feature
s390/kdump: Use EL
From: Jan Willeke
This patch introduces the s390 specific way to map pages from oldmem.
The memory area below OLDMEM_SIZE is mapped with offset OLDMEM_BASE.
The other old memory is mapped directly.
Signed-off-by: Jan Willeke
Signed-off-by: Michael Holzheu
---
arch/s390/kernel/crash_dump.c
. This handler does the following:
* Check if /proc/vmcore page cache page is already available
* If yes:
- Return that page
* If no:
- Allocate new page
- Fill page using __vmcore_read()
- Add new page to page cache
Signed-off-by: Michael Holzheu
---
fs/proc/vmcore.c | 94
. This handler does the following:
* Check if /proc/vmcore page cache page is already available
* If yes:
- Return that page
* If no:
- Allocate new page
- Fill page using __vmcore_read()
- Add new page to page cache
Signed-off-by: Michael Holzheu holz...@linux.vnet.ibm.com
---
fs/proc/vmcore.c
by the architecture backend code to read from new memory:
* elfcorehdr_alloc: Return the address and size of the ELF header
* elfcorehdr_free: Free the memory of the ELF header
* elfcorehdr_read: Read from ELF header
* elfcorehdr_read_notes: Read from ELF notes
Signed-off-by: Michael Holzheu holz
() copies from real memory for memory above HSA_SIZE
Jan Willeke (1):
s390/kdump/mmap: Implement remap_oldmem_pfn_range for s390
Michael Holzheu (4):
kdump: Introduce ELF header in new memory feature
s390/kdump: Use ELF header in new memory feature
vmcore/mmap: Introduce remap_oldmem_pfn_range
From: Jan Willeke will...@de.ibm.com
This patch introduces the s390 specific way to map pages from oldmem.
The memory area below OLDMEM_SIZE is mapped with offset OLDMEM_BASE.
The other old memory is mapped directly.
Signed-off-by: Jan Willeke will...@de.ibm.com
Signed-off-by: Michael Holzheu
This patch now exchanges the old relocate mechanism with the new
arch function call override mechanism that allows to create the ELF
core header in the 2nd kernel.
Signed-off-by: Michael Holzheu holz...@linux.vnet.ibm.com
---
arch/s390/kernel/crash_dump.c | 70
This patch modifies the s390 copy_oldmem_page() and remap_oldmem_pfn_range()
function for zfcpdump to read from the HSA memory if memory below HSA_SIZE
bytes is requested. Otherwise real memory is used.
Signed-off-by: Michael Holzheu holz...@linux.vnet.ibm.com
---
arch/s390/Kconfig
On Mon, 3 Jun 2013 11:59:40 -0400
Vivek Goyal wrote:
> On Mon, Jun 03, 2013 at 03:27:18PM +0200, Michael Holzheu wrote:
>
> [..]
> > > If not, how would remap_pfn_range() work with HSA region when
> > > /proc/vmcore is mmaped()?
> >
> > I am no m
On Fri, 31 May 2013 12:01:58 -0400
Vivek Goyal wrote:
> On Fri, May 31, 2013 at 04:21:27PM +0200, Michael Holzheu wrote:
> > On Thu, 30 May 2013 16:38:47 -0400
> > Vivek Goyal wrote:
> >
> > > On Wed, May 29, 2013 at 01:51:44PM +0200, Michael Holzheu wrote:
&
On Fri, 31 May 2013 12:01:58 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Fri, May 31, 2013 at 04:21:27PM +0200, Michael Holzheu wrote:
On Thu, 30 May 2013 16:38:47 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Wed, May 29, 2013 at 01:51:44PM +0200, Michael Holzheu wrote
On Mon, 3 Jun 2013 11:59:40 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Mon, Jun 03, 2013 at 03:27:18PM +0200, Michael Holzheu wrote:
[..]
If not, how would remap_pfn_range() work with HSA region when
/proc/vmcore is mmaped()?
I am no memory management expert, so I discussed
On Thu, 30 May 2013 16:38:47 -0400
Vivek Goyal wrote:
> On Wed, May 29, 2013 at 01:51:44PM +0200, Michael Holzheu wrote:
>
> [..]
> > >>> START QUOTE
> >
> > [PATCH v3 1/3] kdump: Introduce ELF header in new memory feature
> >
> > Currently f
On Thu, 30 May 2013 16:38:47 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Wed, May 29, 2013 at 01:51:44PM +0200, Michael Holzheu wrote:
[..]
START QUOTE
[PATCH v3 1/3] kdump: Introduce ELF header in new memory feature
Currently for s390 we create the ELF core header in the 2nd
On Wed, 29 May 2013 12:23:26 -0400
Vivek Goyal wrote:
> On Wed, May 29, 2013 at 01:51:44PM +0200, Michael Holzheu wrote:
> > On Tue, 28 May 2013 09:55:01 -0400
> > Vivek Goyal wrote:
> >
> > > On Sat, May 25, 2013 at 02:52:17PM +0200, Michael Holzheu wrote:
> &
On Tue, 28 May 2013 09:55:01 -0400
Vivek Goyal wrote:
> On Sat, May 25, 2013 at 02:52:17PM +0200, Michael Holzheu wrote:
[snip]
> > Besides of the newmem mechanism, for completeness, we also
> > implemented the oldmem ELF header mechansim in kexec. But this is
> >
On Tue, 28 May 2013 09:55:01 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Sat, May 25, 2013 at 02:52:17PM +0200, Michael Holzheu wrote:
[snip]
Besides of the newmem mechanism, for completeness, we also
implemented the oldmem ELF header mechansim in kexec. But this is
disabled by default
On Wed, 29 May 2013 12:23:26 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Wed, May 29, 2013 at 01:51:44PM +0200, Michael Holzheu wrote:
On Tue, 28 May 2013 09:55:01 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Sat, May 25, 2013 at 02:52:17PM +0200, Michael Holzheu wrote:
[snip
On Fri, 24 May 2013 13:05:07 -0400
Vivek Goyal wrote:
> On Fri, May 24, 2013 at 06:46:53PM +0200, Michael Holzheu wrote:
> > On Fri, 24 May 2013 11:28:49 -0400
> > Vivek Goyal wrote:
> >
> > > On Fri, May 24, 2013 at 05:06:26PM +0200, Michael Holzheu wrote:
> &
On Sat, 25 May 2013 16:31:58 +0800
Zhang Yanfei wrote:
[snip]
> For s390, if we put swap info into the elf header, This will
> change /sbin/kexec. But at this point, copy_oldmem_page is still
> doing the swap when we try to read the pages among [0 - OLDMEM_SIZE]
> and [OLDMEM_BASE - OLDMEM_BASE
On Sat, 25 May 2013 16:31:58 +0800
Zhang Yanfei zhangyanfei@gmail.com wrote:
[snip]
For s390, if we put swap info into the elf header, This will
change /sbin/kexec. But at this point, copy_oldmem_page is still
doing the swap when we try to read the pages among [0 - OLDMEM_SIZE]
and
On Fri, 24 May 2013 13:05:07 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Fri, May 24, 2013 at 06:46:53PM +0200, Michael Holzheu wrote:
On Fri, 24 May 2013 11:28:49 -0400
Vivek Goyal vgo...@redhat.com wrote:
On Fri, May 24, 2013 at 05:06:26PM +0200, Michael Holzheu wrote:
[snip
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