Currently if you are doing a global perf recording with hardware
breakpoints (ie perf record -e mem:0xdeadbeef -a), you can oops with:
Faulting instruction address: 0xc0738890
cpu 0xc: Vector: 300 (Data Access) at [c003f76af8d0]
pc: c0738890: .hw_breakpoint_handler+0x
On Thu, Aug 23, 2012 at 02:28:20PM +1000, Michael Ellerman wrote:
> On Wed, 2012-08-22 at 13:57 +0530, Ananth N Mavinakayanahalli wrote:
> > From: Ananth N Mavinakayanahalli
> >
> > This is the port of uprobes to powerpc. Usage is similar to x86.
>
> Hi Ananth,
>
> Excuse my ignorance of uprobe
>
> These seem to be duplicated in kprobes.h, can we consolidate them.
>
> > +struct arch_uprobe {
> > + u8 insn[MAX_UINSN_BYTES];
> > +};
>
> Why not uprobe_opcode_t insn ?
>
insn is updated/accessed in the arch independent code. Size of
uprobe_opcode_t could be different for different
On Wed, 2012-08-22 at 13:57 +0530, Ananth N Mavinakayanahalli wrote:
> From: Ananth N Mavinakayanahalli
>
> This is the port of uprobes to powerpc. Usage is similar to x86.
Hi Ananth,
Excuse my ignorance of uprobes, some comments inline ...
> [root@ ~]# ./bin/perf probe -x /lib64/libc.so.
This patch should be used to get QE USB host mode working on mpc832x and
mpc8360
based devices. It fixes the following issues:
- BRG divisor shall not be an add number greater than 3.
- USB param block in multi-user ram can't be accessed at default location
on mpc832x
device. Allocate it dynamic
On 08/23/2012 11:14 AM, Nicholas A. Bellinger wrote:
> On Thu, 2012-08-23 at 10:10 +0800, Tiejun Chen wrote:
>> For powerpc BooKE and e200, singlestep is handled on the critical/dbg
>> exception stack. This causes current_thread_info() to fail for kgdb
>> internal, so previously We work around this
On Thu, 2012-08-23 at 10:10 +0800, Tiejun Chen wrote:
> For powerpc BooKE and e200, singlestep is handled on the critical/dbg
> exception stack. This causes current_thread_info() to fail for kgdb
> internal, so previously We work around this issue by copying
> the thread_info from the kernel stack
For powerpc BooKE and e200, singlestep is handled on the critical/dbg
exception stack. This causes current_thread_info() to fail for kgdb
internal, so previously We work around this issue by copying
the thread_info from the kernel stack before calling kgdb_handle_exception,
and copying it back afte
The kgdb_single_step flag has the possibility to indefinitely
hang the system on an SMP system.
The x86 arch have the same problem, and that problem was fixed by
commit 8097551d9ab9b9e3630(kgdb,x86: do not set kgdb_single_step
on x86). This patch does the same behaviors as x86's patch.
Signed-off
We need to skip a breakpoint exception when it occurs after
a breakpoint has already been removed.
Signed-off-by: Tiejun Chen
---
v2: simply kgdb_skipexception() return path.
arch/powerpc/kernel/kgdb.c | 15 +++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/arch
On 08/22/2012 11:07 PM, Tabi Timur-B04825 wrote:
> On Wed, Aug 22, 2012 at 5:43 AM, Tiejun Chen
> wrote:
>
>> +int kgdb_skipexception(int exception, struct pt_regs *regs)
>> +{
>> + if (kgdb_isremovedbreak(regs->nip))
>> + return 1;
>> +
>> + return 0;
>> +}
>
> int kg
Add several #includes that mpic_msgr relies on being pulled implicitly,
which only happens on certain configs.
Signed-off-by: Scott Wood
Cc: Meador Inge
Cc: Jia Hongtao
---
arch/powerpc/include/asm/mpic_msgr.h |1 +
arch/powerpc/sysdev/mpic_msgr.c |3 +++
2 files changed, 4 insert
On Wed, Aug 22, 2012 at 04:17:43PM -0500, Ashley Lai wrote:
> This patch adds a new device driver to support IBM virtual TPM
> (vTPM) for PPC64. IBM vTPM is supported through the adjunct
> partition with firmware release 740 or higher. With vTPM
> support, each lpar is able to have its own vTPM w
This patch adds a new device driver to support IBM virtual TPM
(vTPM) for PPC64. IBM vTPM is supported through the adjunct
partition with firmware release 740 or higher. With vTPM
support, each lpar is able to have its own vTPM without the
physical TPM hardware.
This driver provides TPM function
Yocto (Built by Poky 7.0) 1.2 root filesystems fail to boot,
at least over nfs, with:
Failed to mount /dev: No such device
Configuring DEVTMPFS fixes it.
Signed-off-by: Kim Phillips
---
v2: separated savedefconfig updates, rebased on merge branch
arch/powerpc/configs/85xx/p1023rds_defconfig |
run make savedefconfig on fsl defconfigs.
Signed-off-by: Kim Phillips
---
arch/powerpc/configs/85xx/p1023rds_defconfig | 30 ---
arch/powerpc/configs/corenet32_smp_defconfig | 28 +++--
arch/powerpc/configs/mpc83xx_defconfig | 17 ---
On 08/22, Ananth N Mavinakayanahalli wrote:
>
> +int arch_uprobe_analyze_insn(struct arch_uprobe *auprobe, struct mm_struct
> *mm, unsigned long addr)
> +{
> + unsigned int insn;
> +
> + if (addr & 0x03)
> + return -EINVAL;
> +
> + memcpy(&insn, auprobe->insn, MAX_UINSN_BYT
On Aug 22, 2012, at 1:24 AM,
wrote:
> From: Xuelin Shi
>
> The RaidEngine is a new FSL hardware that used as hardware acceration
> for RAID5/6.
>
> This patch enables the RaidEngine functionality and provides hardware
> offloading capability for memcpy, xor and raid6 pq computation. It work
On Wed, Aug 22, 2012 at 5:43 AM, Tiejun Chen wrote:
> +int kgdb_skipexception(int exception, struct pt_regs *regs)
> +{
> + if (kgdb_isremovedbreak(regs->nip))
> + return 1;
> +
> + return 0;
> +}
int kgdb_skipexception(int exception, struct pt_regs *regs)
{
ret
We need to skip a breakpoint exception when it occurs after
a breakpoint has already been removed.
Signed-off-by: Tiejun Chen
---
arch/powerpc/kernel/kgdb.c | 18 ++
1 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel
The kgdb_single_step flag has the possibility to indefinitely
hang the system on an SMP system.
The x86 arch have the same problem, and that problem was fixed by
commit 8097551d9ab9b9e3630(kgdb,x86: do not set kgdb_single_step
on x86). This patch does the same behaviors as x86's patch.
Signed-off
For powerpc BooKE and e200, singlestep is handled on the critical/dbg
exception stack. This causes current_thread_info() to fail for kgdb
internal, so previously We work around this issue by copying
the thread_info from the kernel stack before calling kgdb_handle_exception,
and copying it back afte
when missing USB PHY clock, kernel booting up will hang during USB
initialization. We should check USBGP[PHY_CLK_VALID] bit to avoid
CPU hanging in this case.
Signed-off-by: Shengzhou Liu
---
v2 changes: use spin_event_timeout() instead.
drivers/usb/host/ehci-fsl.c | 58 ++
On 21/08/12 14:58, Kumar Gala wrote:
>
> On Aug 21, 2012, at 7:39 AM, Martyn Welch wrote:
>
>> On 15/08/12 22:32, Kumar Gala wrote:
>>> Do you know why ge_imp3a.c has 0x9000 as the 'primary' PCIe bus on the
>>> board?
>>>
>>
>> Hi Kumar,
>>
>> Sorry, missed your mail.
>
> np.
>
>> At a quick g
On Tue, Aug 21, 2012 at 03:09:30PM +0200, Oleg Nesterov wrote:
...
> > This is true for Intel like architectures that have *one* swbp
> > instruction. On Powerpc, gdb for instance, can insert a trap variant at
> > the address. Therefore, is_swbp_insn() by definition should return true
> > for all
From: Ananth N Mavinakayanahalli
This is the port of uprobes to powerpc. Usage is similar to x86.
[root@ ~]# ./bin/perf probe -x /lib64/libc.so.6 malloc
Added new event:
probe_libc:malloc(on 0xb4860)
You can now use it in all perf tools, such as:
perf record -e probe_libc:mal
From: Ananth N Mavinakayanahalli
Add thread_struct.trap_nr and use it to store the last exception
the thread experienced. In this patch, we populate the field at
various places where we force_sig_info() to the process.
This is also used in uprobes to determine if the probed instruction
caused an
> -Original Message-
> From: Wood Scott-B07421
> Sent: Tuesday, August 21, 2012 6:04 AM
> To: Jia Hongtao-B38951
> Cc: linuxppc-dev@lists.ozlabs.org; ga...@kernel.crashing.org; Li Yang-
> R58472; Bradley Hughes
> Subject: Re: [PATCH V8] powerpc/fsl-pci: Unify pci/pcie initialization
> cod
From: Xuelin Shi
Add XOR offloading functionality by CAAM and interface with async_tx layer
so that it can be used for RAID parity computation.
Signed-off-by: Naveen Burmi
Signed-off-by: Yuan Kang
Signed-off-by: Xuelin Shi
---
drivers/crypto/caam/Kconfig | 15 +
drivers/crypto/caam/M
Currently if you are doing a global perf recording with hardware
breakpoints (ie perf record -e mem:0xdeadbeef -a), you can oops with:
Faulting instruction address: 0xc0738890
cpu 0xc: Vector: 300 (Data Access) at [c003f76af8d0]
pc: c0738890: .hw_breakpoint_handler+0x
Signed-off-by: Michael Neuling
---
arch/powerpc/include/asm/cputable.h |2 --
1 file changed, 2 deletions(-)
diff --git a/arch/powerpc/include/asm/cputable.h
b/arch/powerpc/include/asm/cputable.h
index 50d82c8..b3c083d 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/incl
Here are a couple of patches for perf for hardware breakpoints. Along
with https://lkml.org/lkml/2012/8/16/5 hardware breakpoints now work
for me powerpc. These patches don't depend on that patch though.
Michael Neuling (2):
powerpc: Remove unessasary ifdefs
powerpc: Fix null pointer deref i
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