于 2012年10月18日 18:55, Avi Kivity 写道:
On 10/18/2012 03:12 AM, Zhang Yanfei wrote:
于 2012年10月17日 18:16, Avi Kivity 写道:
On 10/17/2012 04:28 AM, Zhang Yanfei wrote:
于 2012年10月15日 23:43, Avi Kivity 写道:
On 10/12/2012 08:40 AM, Zhang Yanfei wrote:
Currently, kdump just makes all the logical
Currently, kdump just makes all the logical processors leave VMX operation by
executing VMXOFF instruction, so any VMCSs active on the logical processors may
be corrupted. But, sometimes, we need the VMCSs to debug guest images contained
in the host vmcore. To prevent the corruption, we should
This patch provides a way to VMCLEAR vmcss related to guests
on all cpus before executing the VMXOFF when doing kdump. This
is used to ensure the VMCSs in the vmcore updated and
non-corrupted.
Signed-off-by: zhangyanfei zhangyan...@cn.fujitsu.com
---
arch/x86/include/asm/kexec.h |2 ++
Signed-off-by: zhangyanfei zhangyan...@cn.fujitsu.com
---
arch/x86/kvm/vmx.c |9 +
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 4ff0ab9..f6a16b2 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -41,6 +41,7 @@
Currently, kdump just makes all the logical processors leave VMX operation by
executing VMXOFF instruction, so any VMCSs active on the logical processors may
be corrupted. But, sometimes, we need the VMCSs to debug guest images contained
in the host vmcore. To prevent the corruption, we should
This patch provides an alternative way to clear vmcss related to guests
on all cpus when doing kdump.
Signed-off-by: zhangyanfei zhangyan...@cn.fujitsu.com
---
arch/x86/include/asm/kexec.h |3 +++
arch/x86/kernel/crash.c | 23 +++
2 files changed, 26 insertions(+),
Signed-off-by: zhangyanfei zhangyan...@cn.fujitsu.com
---
arch/x86/kvm/vmx.c |9 +
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 4ff0ab9..f6a16b2 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -41,6 +41,7 @@
This patch exports the variable clear_loaded_vmcs_enabled to userspace.
Signed-off-by: zhangyanfei zhangyan...@cn.fujitsu.com
---
Documentation/sysctl/kernel.txt |8
kernel/sysctl.c | 10 ++
2 files changed, 18 insertions(+), 0 deletions(-)
diff --git
于 2012年10月15日 23:43, Avi Kivity 写道:
On 10/12/2012 08:40 AM, Zhang Yanfei wrote:
Currently, kdump just makes all the logical processors leave VMX operation by
executing VMXOFF instruction, so any VMCSs active on the logical processors
may
be corrupted. But, sometimes, we need the VMCSs
于 2012年10月17日 18:16, Avi Kivity 写道:
On 10/17/2012 04:28 AM, Zhang Yanfei wrote:
于 2012年10月15日 23:43, Avi Kivity 写道:
On 10/12/2012 08:40 AM, Zhang Yanfei wrote:
Currently, kdump just makes all the logical processors leave VMX operation
by
executing VMXOFF instruction, so any VMCSs active
Hi, simon
I forgot to add your email in the CC, could you please help
reviewing this patch since I will send the kexec-tools patch
if this patch is accepted.
Thanks
Zhang
于 2013年03月28日 16:15, Zhang Yanfei 写道:
For percpu notes, we are exporting only address and not size. So
the userspace tool
...@intel.com
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
drivers/base/cpu.c |4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index a55b590..ee38cc2 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -138,8 +138,10
Add an Documentation/ABI entry for /sys/devices/system/cpu/cpu0/crash_notes
and /sys/devices/system/cpu/cpu0/crash_notes_size.
Cc: Greg KH gre...@linuxfoundation.org
Cc: Eric W. Biederman ebied...@xmission.com
Cc: Vivek Goyal vgo...@redhat.com
Signed-off-by: Zhang Yanfei zhangyan
parse it intead of using 1024.
The idea came from Vivek Goyal. And a later patch will be sent to
kexec-tools to let it parse the size.
Cc: Greg KH gre...@linuxfoundation.org
Cc: Eric W. Biederman ebied...@xmission.com
Cc: Vivek Goyal vgo...@redhat.com
Signed-off-by: Zhang Yanfei zhangyan
anything more.
I see. I know what you mean now. I was just surprised and puzzled about your
namespace concept.
Other than the name of NT_VMCORE_PAD, no complaints about the code.
Reviewed-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
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于 2013年03月05日 15:35, Zhang Yanfei 写道:
于 2013年03月02日 16:35, HATAYAMA Daisuke 写道:
Code around /proc/vmcore currently assumes program header table is
next to ELF header. But future change can break the assumption on
kexec-tools and the 1st kernel. To avoid worst case, now refer to
e_phoff member
于 2013年03月02日 16:36, HATAYAMA Daisuke 写道:
Due to mmap() requirement, we need to copy pages not starting or
ending with page-size aligned address in 2nd kernel and to map them to
user-space.
For example, see the map below:
-0001 : reserved
0001-0009f7ff : System
于 2013年03月10日 14:27, Jiang Liu 写道:
Use common help functions to free reserved pages.
Signed-off-by: Jiang Liu jiang@huawei.com
Cc: Eric Biederman ebied...@xmission.com
Reviewed-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
kernel/kexec.c |8 ++--
1 file changed, 2
remove cast for kzalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Andrew Morton a...@linux-foundation.org
Cc: Russell King li...@arm.linux.org.uk
Cc: linux-arm-ker...@lists.infradead.org
---
arch/arm/kernel/topology.c |2 +-
1 files changed, 1 insertions(+), 1
remove cast for kmalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Tony Luck tony.l...@intel.com
Cc: Fenghua Yu fenghua...@intel.com
Cc: Andrew Morton a...@linux-foundation.org
Cc: linux-i...@vger.kernel.org
---
arch/ia64/kernel/mca_drv.c |2 +-
1 files changed
remove cast for kmalloc/kzalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Benjamin Herrenschmidt b...@kernel.crashing.org
Cc: Paul Mackerras pau...@samba.org
Cc: Andrew Morton a...@linux-foundation.org
Cc: linuxppc-...@lists.ozlabs.org
---
arch/powerpc/kernel
remove cast for kmalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Thomas Gleixner t...@linutronix.de
Cc: Ingo Molnar mi...@redhat.com
Cc: H. Peter Anvin h...@zytor.com
Cc: Andrew Morton a...@linux-foundation.org
Cc: x...@kernel.org x...@kernel.org
---
arch/x86
remove cast for kmalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Greg Kroah-Hartman gre...@linuxfoundation.org
Cc: Andrew Morton a...@linux-foundation.org
Cc: de...@driverdev.osuosl.org
---
drivers/staging/csr/drv.c |4 ++--
drivers/staging
remove cast for kzalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Andrew Morton a...@linux-foundation.org
Cc: David Airlie airl...@linux.ie
Cc: dri-de...@lists.freedesktop.org
---
drivers/gpu/drm/i915/intel_sdvo.c |2 +-
1 files changed, 1 insertions(+), 1
remove cast for kmalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: K. Y. Srinivasan k...@microsoft.com
Cc: Haiyang Zhang haiya...@microsoft.com
Cc: Andrew Morton a...@linux-foundation.org
Cc: de...@linuxdriverproject.org
---
drivers/hv/hv.c |5 ++---
1 files
remove cast for kmalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Andrew Morton a...@linux-foundation.org
Cc: Karsten Keil i...@linux-pingi.de
Cc: net...@vger.kernel.org
---
drivers/isdn/capi/capidrv.c |3 +--
1 files changed, 1 insertions(+), 2 deletions
remove cast for kmalloc/kzalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Andrew Morton a...@linux-foundation.org
Cc: Karsten Keil i...@linux-pingi.de
Cc: net...@vger.kernel.org
---
drivers/isdn/hisax/fsm.c|2 +-
drivers/isdn/hisax/hfc_sx.c |2 +-
2
remove cast for kzalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Martin Schwidefsky schwidef...@de.ibm.com
Cc: Heiko Carstens heiko.carst...@de.ibm.com
Cc: Andrew Morton a...@linux-foundation.org
Cc: linux...@de.ibm.com
---
drivers/s390/block/dasd_devmap.c |3
remove cast for kzalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Ursula Braun ursula.br...@de.ibm.com
Cc: Frank Blaschka blasc...@linux.vnet.ibm.com
Cc: Martin Schwidefsky schwidef...@de.ibm.com
Cc: Heiko Carstens heiko.carst...@de.ibm.com
Cc: Andrew Morton
remove cast for kmalloc/kzalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: James E.J. Bottomley jbottom...@parallels.com
Cc: Andrew Morton a...@linux-foundation.org
Cc: linux-s...@vger.kernel.org
---
drivers/scsi/hpsa.c |3 +--
drivers/scsi/lpfc
remove cast for kzalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Greg Kroah-Hartman gre...@linuxfoundation.org
Cc: Jiri Slaby jsl...@suse.cz
Cc: Andrew Morton a...@linux-foundation.org
Cc: linux-ser...@vger.kernel.org
---
drivers/tty/serial/icom.c |3 +--
1
remove cast for kmalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Greg Kroah-Hartman gre...@linuxfoundation.org
Cc: Jiri Slaby jsl...@suse.cz
Cc: Andrew Morton a...@linux-foundation.org
---
drivers/tty/vt/consolemap.c |3 +--
1 files changed, 1 insertions(+), 2
remove cast for kmalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Matthew Dharm mdharm-...@one-eyed-alien.net
Cc: Greg Kroah-Hartman gre...@linuxfoundation.org
Cc: Andrew Morton a...@linux-foundation.org
Cc: linux-...@vger.kernel.org
Cc: usb-stor...@lists.one-eyed
remove cast for kmalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Andrew Morton a...@linux-foundation.org
---
fs/befs/btree.c |3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/fs/befs/btree.c b/fs/befs/btree.c
index a66c9b1..74e397d 100644
remove cast for kmalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Evgeniy Dushistov dushis...@mail.ru
Cc: Andrew Morton a...@linux-foundation.org
---
fs/ufs/util.c |3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/fs/ufs/util.c b/fs/ufs
remove cast for kmalloc/kzalloc return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Vlad Yasevich vyasev...@gmail.com
Cc: Sridhar Samudrala s...@us.ibm.com
Cc: Neil Horman nhor...@tuxdriver.com
Cc: Andrew Morton a...@linux-foundation.org
Cc: linux-s...@vger.kernel.org
Remove the WARN_ON_ONCE(!mm) check as the comment suggested.
Kernel code calls find_vma only when it is absolutely sure that the
mm_struct arg to it is non-NULL.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Cc: Andrew Morton a...@linux-foundation.org
---
mm/mmap.c |3 ---
1 files
header table in
file-offset.
Reviewed-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
Signed-off-by: HATAYAMA Daisuke d.hatay...@jp.fujitsu.com
---
fs/proc/vmcore.c | 40
1 files changed, 20 insertions(+), 20 deletions(-)
diff --git a/fs/proc
于 2013年03月02日 16:35, HATAYAMA Daisuke 写道:
Current code assumes all PT_NOTE headers are placed at the beginning
of program header table and they are consequtive. But the assumption
could be broken by future changes on either kexec-tools or the 1st
kernel. This patch removes the assumption and
*kobj,
{
return sprintf(buf, %lx %x\n,
paddr_vmcoreinfo_note(),
-(unsigned int)vmcoreinfo_max_size);
+(unsigned int)sizeof(vmcoreinfo_note));
}
KERNEL_ATTR_RO(vmcoreinfo);
Reviewed-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
于 2013年03月05日 17:02, HATAYAMA Daisuke 写道:
From: Zhang Yanfei zhangyan...@cn.fujitsu.com
Subject: Re: [PATCH v2 02/20] vmcore: rearrange program headers without
assuming consequtive PT_NOTE entries
Date: Tue, 5 Mar 2013 16:36:53 +0800
于 2013年03月02日 16:35, HATAYAMA Daisuke 写道:
Current code
于 2013年03月02日 16:36, HATAYAMA Daisuke 写道:
Allocate buffer for ELF headers on page-size aligned boudary to
satisfy mmap() requirement. For this, __get_free_pages() is used
instead of kmalloc().
Also, later patch will decrease actually used buffer size for ELF
headers, so it's necessary to
于 2013年03月02日 16:37, HATAYAMA Daisuke 写道:
Fill both crash_notes and vmcoreinfo_note buffers by NT_VMCORE_PAD
note type to make them satisfy mmap()'s page-size boundary
requirement.
So far, end of note segments has been marked by zero-filled elf
header. Instead, this patch writes
于 2012年12月05日 04:14, Eric W. Biederman 写道:
Zhang Yanfei zhangyan...@cn.fujitsu.com writes:
This patch provides a way to VMCLEAR VMCSs related to guests
on all cpus before executing the VMXOFF when doing kdump. This
is used to ensure the VMCSs in the vmcore updated and
non-corrupted
and clear VMCSs unconditionally.
Zhang Yanfei (2):
x86/kexec: VMCLEAR VMCSs loaded on all cpus if necessary
KVM-INTEL: provide the vmclear function and a bitmap to support
VMCLEAR in kdump
arch/x86/include/asm/kexec.h |2 +
arch/x86/kernel/crash.c | 32
This patch provides a way to VMCLEAR VMCSs related to guests
on all cpus before executing the VMXOFF when doing kdump. This
is used to ensure the VMCSs in the vmcore updated and
non-corrupted.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
arch/x86/include/asm/kexec.h |2 ++
arch
The vmclear function will be assigned to the callback function pointer
when loading kvm-intel module. And the bitmap indicates whether we
should do VMCLEAR operation in kdump. The bits in the bitmap are
set/unset according to different conditions.
Signed-off-by: Zhang Yanfei zhangyan
patch1 first.
Zhang Yanfei (3):
mm: rename nr_free_zone_pages to nr_free_zone_high_pages
mm: rename nr_free_buffer_pages to nr_free_buffer_high_pages
mm: rename nr_free_pagecache_pages to nr_free_pagecache_high_pages
arch/ia64/mm/contig.c |3 ++-
arch/ia64/mm/discontig.c
From: Zhang Yanfei zhangyan...@cn.fujitsu.com
This function actually counts present_pages - pages_high, so rename
it to a reasonable name.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
mm/page_alloc.c |6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm
From: Zhang Yanfei zhangyan...@cn.fujitsu.com
This function actually counts RAM pages that are above high watermark within
ZONE_DMA and ZONE_NORMAL, so rename it to a reasonable name.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
arch/ia64/mm/contig.c |3 ++-
arch/ia64
From: Zhang Yanfei zhangyan...@cn.fujitsu.com
This function actually counts RAM pages that are above high watermark within
all zones, so rename it to a reasonable name.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
include/linux/swap.h |2 +-
mm/memory_hotplug.c |4
于 2013年02月06日 06:13, Andrew Morton 写道:
On Tue, 5 Feb 2013 14:26:40 -0500
Johannes Weiner han...@cmpxchg.org wrote:
On Wed, Feb 06, 2013 at 01:09:55AM +0800, Zhang Yanfei wrote:
Function nr_free_zone_pages, nr_free_buffer_pages and
nr_free_pagecache_pages
are horribly badly named
于 2013年02月06日 09:20, Andrew Morton 写道:
On Wed, 06 Feb 2013 09:06:05 +0800
Zhang Yanfei zhangyan...@cn.fujitsu.com wrote:
So could I rename the functions to the names like
nr_available_buffer_high_pages
And accurately document them with code comments just as you suggested.
gee. available
.
For these variables are placed in several subsystems, I may be incorrectly
fix them, if there is any problem with the fix, please correct me.
Zhang Yanfei (7):
mm: fix return type for functions nr_free_*_pages
ia64: use %ld to print pages calculated in nr_free_buffer_pages
fs/buffer.c: change type
Currently, the amount of RAM that functions nr_free_*_pages return
is held in unsigned int. But in machines with big memory (exceeding
16TB), the amount may be incorrect because of overflow, so fix it.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
include/linux/swap.h |4
This variable is calculated from nr_free_pagecache_pages so
change its type to unsigned long.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
include/linux/swap.h |2 +-
mm/vmscan.c |2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux
This member of struct netns_ipvs is calculated from nr_free_buffer_pages
so change its type to unsigned long in case of overflow.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
include/net/ip_vs.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/net
This member of struct virtio_chan is calculated from nr_free_buffer_pages
so change its type to unsigned long in case of overflow.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
net/9p/trans_virtio.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/net/9p
Now the function nr_free_buffer_pages returns unsigned long, so
use %ld to print its return value.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
arch/ia64/mm/contig.c|2 +-
arch/ia64/mm/discontig.c |2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git
The three variables are calculated from nr_free_buffer_pages so
change their types to unsigned long in case of overflow.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
fs/nfsd/nfs4state.c |6 +++---
fs/nfsd/nfsd.h |6 +++---
fs/nfsd/nfssvc.c|6 +++---
3 files
max_buffer_heads is calculated from nr_free_buffer_pages(), so
change its type to unsigned long in case of overflow.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
fs/buffer.c |4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/buffer.c b/fs/buffer.c
index
Functions nr_free_zone_pages, nr_free_buffer_pages and nr_free_pagecache_pages
are horribly badly named, so accurately document them with code comments
in case of the misuse of them.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
mm/page_alloc.c | 23 +++
1
sync_qlen_max that should be changed to
sizeof(unsigned long) and updated with proc_doulongvec_minmax.
Thanks for pointing this. I will update this in patch v2.
Thanks
Zhang Yanfei
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于 2013年02月07日 09:09, Simon Horman 写道:
On Wed, Feb 06, 2013 at 05:36:12PM +0800, Zhang Yanfei wrote:
于 2013年02月06日 17:29, Julian Anastasov 写道:
Hello,
Sorry that I'm writing a private email but I
deleted your original message by mistake. Your change
of the sysctl_sync_qlen_max from
于 2013年02月07日 08:55, Randy Dunlap 写道:
On 02/06/13 00:25, Zhang Yanfei wrote:
Functions nr_free_zone_pages, nr_free_buffer_pages and
nr_free_pagecache_pages
are horribly badly named, so accurately document them with code comments
in case of the misuse of them.
Signed-off-by: Zhang Yanfei
Functions nr_free_zone_pages, nr_free_buffer_pages and nr_free_pagecache_pages
are horribly badly named, so accurately document them with code comments
in case of the misuse of them.
Reviewed-by: Randy Dunlap rdun...@infradead.org
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
mm
Cc: Simon Horman ho...@verge.net.au
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
include/net/ip_vs.h|4 ++--
net/netfilter/ipvs/ip_vs_ctl.c |4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index
-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
include/net/ip_vs.h|6 +++---
net/netfilter/ipvs/ip_vs_ctl.c |4 ++--
2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 68c69d5..1d56f92 100644
--- a/include/net
于 2013年02月07日 16:40, Julian Anastasov 写道:
Hello,
On Thu, 7 Feb 2013, Zhang Yanfei wrote:
Since the type of netns_ipvs-sysctl_sync_qlen_max has been changed to
unsigned long, type of its related proc var sync_qlen_max should be changed
to unsigned long, too. Also the return type
hole_end has been checked to make sure it is = crash_res.end in the
while condition check, so the if condition check is duplicate.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
kernel/kexec.c |2 --
1 files changed, 0 insertions(+), 2 deletions(-)
diff --git a/kernel/kexec.c b
From: Zhang Yanfei zhangyan...@cn.fujitsu.com
In function read_vmcore, two if tests are duplicate. Change the position
of them could reduce the duplication. This change does not affect
the behaviour of the function.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
fs/proc/vmcore.c
于 2013年02月26日 07:35, Andrew Morton 写道:
On Mon, 25 Feb 2013 09:36:51 +0900
Simon Horman ho...@verge.net.au wrote:
On Sun, Feb 24, 2013 at 10:37:21PM +0800, Zhang Yanfei wrote:
From: Zhang Yanfei zhangyan...@cn.fujitsu.com
This is just a tweak: using min_t to simplify logic of variable
...@verge.net.au
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
kernel/kexec.c |6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 2436ffc..3cbfcc7 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -789,7 +789,7 @@ static int
...@xmission.com
Cc: Andrew Morton a...@linux-foundation.org
Reviewed-by: Simon Horman ho...@verge.net.au
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
kernel/kexec.c | 24
1 files changed, 8 insertions(+), 16 deletions(-)
diff --git a/kernel/kexec.c b/kernel/kexec.c
于 2013年02月26日 16:38, Joe Perches 写道:
On Tue, 2013-02-26 at 13:30 +0800, Zhang Yanfei wrote:
This is just a tweak: using min_t to simplify logic of variable
assignments.
v3:
- cast type of (PAGE_SIZE - (maddr ~PAGE_MASK)) into size_t.
Why? Isn't this just a redundant cast?
diff --git
于 2013年02月26日 16:53, Andrew Morton 写道:
On Tue, 26 Feb 2013 16:49:02 +0800 Zhang Yanfei zhangyan...@cn.fujitsu.com
wrote:
diff --git a/kernel/kexec.c b/kernel/kexec.c
[]
@@ -822,13 +822,9 @@ static int kimage_load_normal_segment(struct kimage
*image,
[]
+ mchunk = min_t(size_t
-and-variables-related-to-netns_ipvs-sysctl_sync_qlen_max.patch
are joined at the hip and should be redone as a single patch with a
suitable changelog, please. And with a cc:net...@vger.kernel.org.
Agreed, Zhang Yanfei and Simon? I'm just not sure,
may be this combined patch should hit only
From: Zhang Yanfei zhangyan...@cn.fujitsu.com
This member of struct netns_ipvs is calculated from nr_free_buffer_pages
so change its type to unsigned long in case of overflow. Also, type of
its related proc var sync_qlen_max and the return type of function
sysctl_sync_qlen_max() should be changed
found another malloc/free problem in this function. So I update the
patch.
-
From 1fb76a35e4109e1435f55048c20ea58622e7f87b Mon Sep 17 00:00:00 2001
From: Zhang Yanfei zhangyan...@cn.fujitsu.com
Date: Fri, 22 Feb 2013 10:34:02 +0800
Subject: [PATCH] kexec: fix allocation
于 2013年02月22日 11:41, Sasha Levin 写道:
On 02/21/2013 09:46 PM, Zhang Yanfei wrote:
于 2013年02月22日 09:55, Eric W. Biederman 写道:
Sasha Levin sasha.le...@oracle.com writes:
If kimage_normal_alloc() fails to initialize an allocated kimage, it will
free
the image but would still set 'rimage
...@oracle.com
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
kernel/kexec.c | 18 ++
1 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 5e4bd78..a57face 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -223,6 +223,8
Though there is no error if we free a NULL pointer, I think we could
avoid this behaviour. Change the code a little in kimage_crash_alloc()
could avoid this kind of unnecessary free.
Cc: Eric W. Biederman ebied...@xmission.com
Cc: Andrew Morton a...@linux-foundation.org
Signed-off-by: Zhang
This is just a tweak: using min_t/max_t to avoid `if (foo = bar)' thing.
Cc: Eric W. Biederman ebied...@xmission.com
Cc: Andrew Morton a...@linux-foundation.org
Cc: Simon Horman ho...@verge.net.au
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
kernel/kexec.c | 20
于 2013年02月24日 18:55, Simon Horman 写道:
On Sun, Feb 24, 2013 at 12:03:00PM +0800, Zhang Yanfei wrote:
This is just a tweak: using min_t/max_t to avoid `if (foo = bar)' thing.
- s/=/==/; s/[/]max_t//
But in any case the change is more than that.
I'd be happier with something like
From: Zhang Yanfei zhangyan...@cn.fujitsu.com
This is just a tweak: using min_t to simplify logic of variable
assignments.
v2:
- Rewrite patch description as Simon suggested.
- Fix an inappropriate if test introduced by v1. Thanks Simon.
Cc: Eric W. Biederman ebied...@xmission.com
Cc: Andrew
Hello Avi,
Do you have any comments about this version of the patch set?
于 2012年07月12日 17:54, Zhang Yanfei 写道:
This patch set exports offsets of VMCS fields as note information for
kdump. We call it VMCSINFO. The purpose of VMCSINFO is to retrieve
runtime state of guest machine image
This patch set exports offsets of VMCS fields as note information for
kdump. We call it VMCSINFO. The purpose of VMCSINFO is to retrieve
runtime state of guest machine image, such as registers, in host
machine's crash dump as VMCS format. The problem is that VMCS internal
is hidden by Intel in its
A new module named vmcsinfo-intel is used to fill VMCSINFO. And
this module depends on kvm-intel and kvm module. So we should
export some symbols of kvm-intel and kvm module that are needed
by vmcsinfo-intel.
Signed-off-by: zhangyanfei zhangyan...@cn.fujitsu.com
---
arch/x86/include/asm/vmx.h |
of VMCS fields for guest debugging.
+ *
+ * Copyright (C) 2012 Fujitsu, Inc.
+ *
+ * Authors:
+ * Zhang Yanfei zhangyan...@cn.fujitsu.com
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include linux
2012
+Contact: Zhang Yanfei zhangyan...@cn.fujitsu.com
+Description:
+ A collection of vmcs fields' offsets for Intel cpu.
+ Also including vmcs revision identifier.
+
+ Individual offsets are contained in subfiles named by
+ the filed's
unnecessary conditions in function
cpu_emergency_clear_loaded_vmcss as Marcelo suggested.
Changelog from v1 to v2:
1. remove the sysctl and clear VMCSs unconditionally.
Zhang Yanfei (2):
x86/kexec: VMCLEAR VMCSs loaded on all cpus if necessary
KVM-INTEL: provide the vmclear function
From: Zhang Yanfei zhangyan...@cn.fujitsu.com
This patch provides a way to VMCLEAR VMCSs related to guests
on all cpus before executing the VMXOFF when doing kdump. This
is used to ensure the VMCSs in the vmcore updated and
non-corrupted.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
From: Zhang Yanfei zhangyan...@cn.fujitsu.com
The vmclear function will be assigned to the callback function pointer
when loading kvm-intel module. And the bitmap indicates whether we
should do VMCLEAR operation in kdump. The bits in the bitmap are
set/unset according to different conditions
This removes the sparse warning:
arch/x86/kernel/crash.c:49:32: sparse: incompatible types in comparison
expression (different address spaces)
Reported-by: kbuild test robot fengguang...@intel.com
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
arch/x86/include/asm/kexec.h |4
In function fill_elf_header, elf-e_ident[EI_OSABI] is always set
to ELF_OSABI, so remove the unused argument 'osabi'.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
fs/binfmt_elf.c |6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/binfmt_elf.c b/fs
于 2012年12月11日 04:30, Marcelo Tosatti 写道:
On Fri, Dec 07, 2012 at 01:40:56PM +0800, Zhang Yanfei wrote:
This removes the sparse warning:
arch/x86/kernel/crash.c:49:32: sparse: incompatible types in comparison
expression (different address spaces)
Reported-by: kbuild test robot fengguang
于 2012年12月11日 16:10, Gleb Natapov 写道:
On Tue, Dec 11, 2012 at 04:04:55PM +0800, Zhang Yanfei wrote:
于 2012年12月11日 04:30, Marcelo Tosatti 写道:
On Fri, Dec 07, 2012 at 01:40:56PM +0800, Zhang Yanfei wrote:
This removes the sparse warning:
arch/x86/kernel/crash.c:49:32: sparse: incompatible types
This removes the sparse warning:
arch/x86/kernel/crash.c:49:32: sparse: incompatible types in comparison
expression (different address spaces)
Reported-by: kbuild test robot fengguang...@intel.com
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
arch/x86/include/asm/kexec.h |3
cpu_emergency_clear_loaded_vmcss as Marcelo suggested.
Changelog from v1 to v2:
1. remove the sysctl and clear VMCSs unconditionally.
Zhang Yanfei (2):
x86/kexec: VMCLEAR vmcss on all cpus if necessary
KVM-INTEL: add a notifier and a bitmap to support VMCLEAR in kdump
arch/x86/include/asm/kexec.h |2 +
arch/x86/kernel
This patch adds an atomic notifier list named crash_notifier_list.
When loading kvm-intel module, a notifier will be registered in
the list to enable vmcss loaded on all cpus to be VMCLEAR'd if
needed.
Signed-off-by: Zhang Yanfei zhangyan...@cn.fujitsu.com
---
arch/x86/include/asm/kexec.h |2
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