;libbpf: Fix readelf output parsing for Fedora")
>
> Fixes: 1d1a0e7c5100 ("scripts/faddr2line: Fix overlapping text section
> failures")
> Reference: https://lore.kernel.org/bpf/20191211160133.GB4580@calabresa/
> Cc: "Naveen N. Rao"
> Cc: Jiri Olsa
&
on, simply skip
whenever the detected miss_percent is the expected one for a fully
mitigated system, that is, above 95%.
Signed-off-by: Thadeu Lima de Souza Cascardo
---
tools/testing/selftests/powerpc/security/spectre_v2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/too
Hi, there.
We have been investigating an issue we have observed on POWER8 POWERNV systems.
When running the kernel selftests reuseport_bpf_cpu after a CPU hotplug, we see
crashes, in different forms. [1]
I managed to get xmon on that trap, and did some debugging. [2] I tried to dump
the BPF JIT
B and non-EBB events from being add to the same PMU will
just revert to the previous behavior and the test will succeed.
Fixes: 1908dc911792 (perf: Tweak perf_event_attr::exclusive semantics)
Signed-off-by: Thadeu Lima de Souza Cascardo
---
arch/powerpc/perf/core-book3s.c | 20
On Thu, Sep 17, 2020 at 03:37:16PM -0700, Kees Cook wrote:
> On Sun, Sep 13, 2020 at 10:34:23PM +1000, Michael Ellerman wrote:
> > Thadeu Lima de Souza Cascardo writes:
> > > On Tue, Sep 08, 2020 at 04:18:17PM -0700, Kees Cook wrote:
> > >> On Tue, Jun 30, 2020 at 01
. It still sets
the return code on entry, which is overridden on powerpc, and it will
always repeat the same on exit. Also, on powerpc, the errno is not
inverted, and depends on ccr.so being set.
This has been tested on powerpc and amd64.
Cc: Michael Ellerman
Cc: Kees Cook
Signed-off-by: Thadeu Lima de
On Tue, Sep 08, 2020 at 04:18:17PM -0700, Kees Cook wrote:
> On Tue, Jun 30, 2020 at 01:47:39PM -0300, Thadeu Lima de Souza Cascardo wrote:
> > As pointed out by Michael Ellerman, the ptrace ABI on powerpc does not
> > allow or require the return code to be set on syscall entry wh
LOG.
>
> [1] https://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html
>
> Signed-off-by: Greg Kurz
Agreed. ENOTSUPP should never be returned to userspace.
Acked-by: Thadeu Lima de Souza Cascardo
> ---
> arch/powerpc/kvm/book3s.c |4 ++--
> arch/p
After commit 912c0a7f2b5daa3cbb2bc10f303981e493de73bd ("powerpc/64s: Save FSCR
to init_task.thread.fscr after feature init"), which has been applied to the
referred branches, when userspace sets the user DSCR MSR, it won't be inherited
or restored during context switch, because the facility
On Thu, Jul 30, 2020 at 07:37:16AM +0200, Greg KH wrote:
> On Thu, Jul 30, 2020 at 11:28:38AM +1000, Michael Ellerman wrote:
> > [ Added Peter & Greg to Cc ]
> >
> > Thadeu Lima de Souza Cascardo writes:
> > > Commit df44b479654f62b478c18ee4d8bc4e9f897a9844
as Vulnerable.
Signed-off-by: Thadeu Lima de Souza Cascardo
---
tools/testing/selftests/powerpc/security/spectre_v2.c | 8
1 file changed, 8 insertions(+)
diff --git a/tools/testing/selftests/powerpc/security/spectre_v2.c
b/tools/testing/selftests/powerpc/security/spectre_v2.c
index 8c6b982af2a8
. It still sets
the return code on entry, which is overridden on powerpc, and it will
always repeat the same on exit. Also, on powerpc, the errno is not
inverted, and depends on ccr.so being set.
This has been tested on powerpc and amd64.
Cc: Michael Ellerman
Cc: Kees Cook
Signed-off-by: Thadeu Lima de
io devices don't change after this
fix, they still contain MODALIAS.
Signed-off-by: Thadeu Lima de Souza Cascardo
Fixes: df44b479654f ("kobject: return error code if writing /sys/.../uevent
fails")
---
arch/powerpc/platforms/pseries/vio.c | 1 -
1 file changed, 1 deletion(-)
diff
complete just fine,
as the failing test was using ptrace to change the syscall to return an
error or a fake value, but were failing as it was always returning
-ENOSYS.
Signed-off-by: Thadeu Lima de Souza Cascardo
---
arch/powerpc/kernel/ptrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion
field, as it always comes
inside brackets.
Cc: Aurelien Jarno
Fixes: 3464afdf11f9 (libbpf: Fix readelf output parsing on powerpc with recent
binutils)
Reported-by: Justin Forbes
Signed-off-by: Thadeu Lima de Souza Cascardo
---
tools/lib/bpf/Makefile | 2 ++
1 file changed, 2 insertions(+)
di
On Wed, Dec 11, 2019 at 09:33:53AM -0600, Justin Forbes wrote:
> On Tue, Dec 10, 2019 at 4:26 PM Thadeu Lima de Souza Cascardo
> wrote:
> >
> > On Tue, Dec 10, 2019 at 12:58:33PM -0600, Justin Forbes wrote:
> > > On Mon, Dec 2, 2019 at 3:37 AM Daniel Borkmann
> >
On Tue, Dec 10, 2019 at 12:58:33PM -0600, Justin Forbes wrote:
> On Mon, Dec 2, 2019 at 3:37 AM Daniel Borkmann wrote:
> >
> > On Mon, Dec 02, 2019 at 04:53:26PM +1100, Michael Ellerman wrote:
> > > Aurelien Jarno writes:
> > > > On powerpc with recent versions of binutils, readelf outputs an
io devices don't change after this fix,
they still contain MODALIAS.
Signed-off-by: Thadeu Lima de Souza Cascardo
---
arch/powerpc/platforms/pseries/vio.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/powerpc/platforms/pseries/vio.c
b/arch/powerpc/platforms/pseries/vio.c
index 66
On Tue, Sep 10, 2019 at 10:01:22PM -0300, Thadeu Lima de Souza Cascardo wrote:
> If a tracer sets the syscall number to an invalid one, allow the return
> value set by the tracer to be returned the tracee.
>
> The test for NR_syscalls is already at entry_64.S, and it's at
> do_sysc
, as the failing test
was using ptrace to change the syscall to return an error or a fake value,
but were failing as it was always returning -ENOSYS.
Signed-off-by: Thadeu Lima de Souza Cascardo
---
arch/powerpc/kernel/ptrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch
Ping. Any further reviews/comments? Or any chance of this getting
applied soon?
Thanks.
Cascardo.
On Thu, Nov 16, 2017 at 07:26:43PM -0200, Guilherme G. Piccoli wrote:
> On 11/06/2017 03:34 PM, Thadeu Lima de Souza Cascardo wrote:
> > From: Mahesh Salgaonkar <mah...@linux.vnet.ibm.com>
> >
> > The kernel boot parameter 'nr_cpus=' allows one to specify number of
>
ate_pacas() and smp_setup_cpu_maps() to
accommodate boot cpu for the case where boot_cpuid > nr_cpu_ids.
This change would help to reduce the memory reservation requirement for
kdump on ppc64.
Signed-off-by: Mahesh Salgaonkar <mah...@linux.vnet.ibm.com>
Signed-off-by: Thadeu Lima de Sou
,
while it's not, which some may consider as a bug.
This is also consistent with some other architectures, like x86 and arm,
at least.
Signed-off-by: Thadeu Lima de Souza Cascardo <casca...@canonical.com>
---
arch/powerpc/kernel/stacktrace.c | 9 -
1 file changed, 8 insertions
For the current task, the kernel stack would only tell the last time the
process was rescheduled, if ever. Use the current stack pointer for the
current task.
This is also consistent with some other architectures.
Signed-off-by: Thadeu Lima de Souza Cascardo <casca...@canonical.com>
---
; Cc: Alexei Starovoitov <a...@fb.com>
> Cc: Daniel Borkmann <dan...@iogearbox.net>
> Cc: "David S. Miller" <da...@davemloft.net>
> Cc: Ananth N Mavinakayanahalli <ana...@in.ibm.com>
> Cc: Thadeu Lima de Souza Cascardo <casca...@redhat.com
On Tue, Jun 21, 2016 at 09:15:48PM +1000, Michael Ellerman wrote:
> On Tue, 2016-06-21 at 14:28 +0530, Naveen N. Rao wrote:
> > On 2016/06/20 03:56PM, Thadeu Lima de Souza Cascardo wrote:
> > > On Sun, Jun 19, 2016 at 11:19:14PM +0530, Naveen N. Rao wrote:
> > > >
On Sun, Jun 19, 2016 at 11:19:14PM +0530, Naveen N. Rao wrote:
> On 2016/06/17 10:00AM, Thadeu Lima de Souza Cascardo wrote:
> > On Fri, Jun 17, 2016 at 10:53:21PM +1000, Michael Ellerman wrote:
> > > On Tue, 2016-07-06 at 13:32:23 UTC, "Naveen N. Rao" wrote:
> >
ced Naveen's patchset and the latest
changes in ppc tree for a better way to check for ABI versions.
However, since the issue described below affect mainline and stable kernels,
would you consider applying it before merging your two patchsets, so that we can
more easily backport the fix?
Thanks.
such issues.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
Reviewed-by: Gavin Shan gws...@linux.vnet.ibm.com
---
Documentation/kernel-parameters.txt |2 ++
arch/powerpc/platforms/powernv/pci-ioda.c | 24 +++-
2 files changed, 25
such issues.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
Reviewed-by: Gavin Shan gws...@linux.vnet.ibm.com
---
Documentation/kernel-parameters.txt |2 ++
arch/powerpc/platforms/powernv/pci-ioda.c | 24 +++-
2 files changed, 25
such issues.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
Documentation/kernel-parameters.txt |2 ++
arch/powerpc/platforms/powernv/pci-ioda.c | 24 +++-
2 files changed, 25 insertions(+), 1 deletions(-)
diff --git a/Documentation
On Fri, Sep 05, 2014 at 05:55:18PM +1000, Michael Neuling wrote:
On Fri, 2014-09-05 at 09:13 +0200, Gabriel Paubert wrote:
On Fri, Sep 05, 2014 at 03:28:47PM +1000, Michael Neuling wrote:
The Debian powerpc little endian architecture is called ppc64le. This
Huh? ppc64le or ppc64el?
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
scripts/package/builddeb |2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/scripts/package/builddeb b/scripts/package/builddeb
index 35d5a58..c26c28b 100644
--- a/scripts/package/builddeb
+++ b
is
already taken, and avoid this situation.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
Not tested yet, but I would like some comments now, like would it be
better to have a pci_try_reset_function, or do trylock on
pci_reset_function itself?
---
drivers/vfio/pci
On Mon, Mar 03, 2014 at 08:09:22AM -0700, Alex Williamson wrote:
On Mon, 2014-03-03 at 11:33 -0300, Thadeu Lima de Souza Cascardo wrote:
When we unbind vfio-pci from a device, while running a guest, we might
have a deadlock when such a guest reboots.
Unbind takes device_lock
the reference if it was taken.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
Acked-by: Gavin Shan sha...@linux.vnet.ibm.com
---
arch/powerpc/kernel/eeh_driver.c |8 ++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/eeh_driver.c
On Wed, Feb 05, 2014 at 10:43:38AM -0800, Nishanth Aravamudan wrote:
On 05.02.2014 [16:20:45 -0200], Thadeu Lima de Souza Cascardo wrote:
Commit f5c57710dd62dd06f176934a8b4b8accbf00f9f8 (powerpc/eeh: Use
partial hotplug for EEH unaware drivers) introduces eeh_rmv_device,
which may grab
On Tue, Feb 04, 2014 at 08:47:14AM -0600, John Donnelly wrote:
Hi,
Where is a appropriate place to file a bug for this : This is the second
occurrence I have seen.
If this is a Ubuntu kernel, probably report it at Canonical's Launchpad.
If it is provided by Freescale, report it to
On Fri, Jan 31, 2014 at 08:46:11AM +0800, Gavin Shan wrote:
On Thu, Jan 30, 2014 at 11:00:48AM -0200, Thadeu Lima de Souza Cascardo wrote:
Commit f5c57710dd62dd06f176934a8b4b8accbf00f9f8 (powerpc/eeh: Use
partial hotplug for EEH unaware drivers) introduces eeh_rmv_device,
which may grab
the reference in either exit path if it was taken.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
arch/powerpc/kernel/eeh_driver.c |5 -
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel
iommu_groups under
/sys/kernel/iommu_groups/, and can also bind vfio-pci to an adapter,
which gives me a device at /dev/vfio/.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
This is now applied on top of benh's tree, branch next.
Alexey, is this now OK for you?
Thanks
On Sat, Dec 07, 2013 at 11:58:44AM +1100, Alexey Kardashevskiy wrote:
On 12/06/2013 11:21 PM, Thadeu Lima de Souza Cascardo wrote:
I have recently found out that no iommu_groups could be found under
/sys/ on a P8. That prevents PCI passthrough from working.
During my investigation, I
iommu_groups under
/sys/kernel/iommu_groups/, and can also bind vfio-pci to an adapter,
which gives me a device at /dev/vfio/.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
arch/powerpc/platforms/powernv/pci-ioda.c |1 +
1 files changed, 1 insertions(+), 0 deletions
, and found this was as it is from the start. I
also found no other reasons why it needs to be atomic. Therefore,
Acked-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
___
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https
err was overwritten by a previous function call, and checked to be 0. If
the following page allocation fails, 0 is going to be returned instead
of -ENOMEM.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
arch/powerpc/kvm/book3s_pr.c |5 +++--
1 files changed, 3
the addresses to the cache, but eeh_dev
for the giving pci_device is not set yet. Just reordering the call to
eeh_addr_cache_insert_dev works fine. The ordering is similar to the one
in eeh_add_device_late.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
Note
On Thu, Mar 14, 2013 at 02:45:47PM -0300, luca...@linux.vnet.ibm.com wrote:
From: Lucas Kannebley Tavares luca...@linux.vnet.ibm.com
Betters support for gen2 speed detections on PCI buses on ppc64
architectures.
Signed-off-by: Lucas Kannebley Tavares luca...@linux.vnet.ibm.com
---
On Tue, Jan 29, 2013 at 11:35:56AM +1100, Benjamin Herrenschmidt wrote:
On Thu, 2013-01-10 at 17:33 -0200, Thadeu Lima de Souza Cascardo wrote:
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
v2:
Remove the unneeded extra variable i, which caused build failure
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
v2:
Remove the unneeded extra variable i, which caused build failure.
---
arch/powerpc/kernel/iommu.c |9 ++---
1 files changed, 2 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/kernel/iommu.c b/arch
On Fri, Dec 28, 2012 at 01:21:35PM +0800, Gavin Shan wrote:
On Thu, Dec 27, 2012 at 02:28:06PM -0200, Thadeu Lima de Souza Cascardo wrote:
When a device DMA window includes the address 0, it's reserved in the
TCE bitmap to avoid returning that address to drivers.
When the device is removed
is not cleared, a message is printed, warning of such a
leak.
Check for the reservation, and clear it before checking for any other
standing mappings.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
arch/powerpc/kernel/iommu.c |7 +++
1 files changed, 7 insertions(+), 0
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
arch/powerpc/kernel/iommu.c |7 +--
1 files changed, 1 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 6d48ff8..91e2b99 100644
--- a/arch/powerpc/kernel
The functions used are already defined as empty inline functions for the
case where EEH is disabled.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
arch/powerpc/kernel/of_platform.c |4
1 files changed, 0 insertions(+), 4 deletions(-)
diff --git a/arch
. So, a new function is needed to add such
files only after pci_bus_add_devices have been called.
Cc: sta...@vger.kernel.org
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/eeh.h |3 +++
arch/powerpc/kernel/of_platform.c|3
is not cleared, a message is printed, warning of such a
leak.
Check for the reservation, and clear it before checking for any other
standing mappings.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
arch/powerpc/kernel/iommu.c |5 +
1 files changed, 5 insertions(+), 0
. So, a new function is needed to add such
files only after pci_bus_add_devices have been called.
Cc: sta...@vger.kernel.org
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/eeh.h |3 +++
arch/powerpc/kernel/pci-common.c |7
On Mon, Jul 16, 2012 at 10:27:57AM -0700, Rick Jones wrote:
On 07/16/2012 10:01 AM, Thadeu Lima de Souza Cascardo wrote:
In its receive path, mlx4_en driver maps each page chunk that it pushes
to the hardware and unmaps it when pushing it up the stack. This limits
throughput to about 3Gbps
On Mon, Jul 16, 2012 at 12:42:41PM -0700, Rick Jones wrote:
On 07/16/2012 12:06 PM, Thadeu Lima de Souza Cascardo wrote:
On Mon, Jul 16, 2012 at 10:27:57AM -0700, Rick Jones wrote:
What is the effect on packet-per-second performance? (eg aggregate,
burst-mode netperf TCP_RR with TCP_NODELAY
On Mon, Jul 16, 2012 at 11:43:33PM +0300, Or Gerlitz wrote:
On Mon, Jul 16, 2012 at 10:42 PM, Rick Jones rick.jon...@hp.com wrote:
I was thinking more along the lines of an additional comparison,
explicitly using netperf TCP_RR or something like it, not just the packets
per second from a
is NULL
before accessing the driver's name.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
arch/powerpc/include/asm/ppc-pci.h |5 +
arch/powerpc/platforms/pseries/eeh.c |4 ++--
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc
On Tue, Jan 10, 2012 at 03:05:35PM -, Benjamin Herrenschmidt wrote:
We just replaced the pseries platform idle loops with a cpuidle backend,
however that means that you won't get any power saving and won't return
any unused idle time to the hypervisor unless cpuidle is enabled.
Thus is
to BE while writing to the register. But in the blue
frame case, it was being written as LE to the descriptor.
The fix is not to swap doorbell unconditionally, write it to the
register as BE and convert it to BE when writing it to the descriptor.
Signed-off-by: Thadeu Lima de Souza Cascardo casca
On Mon, Oct 10, 2011 at 01:42:23PM -0300, Thadeu Lima de Souza Cascardo wrote:
The doorbell register was being unconditionally swapped. In x86, that
meant it was being swapped to BE and written to the descriptor and to
memory, depending on the case of blue frame support or writing to
doorbell
On Thu, Oct 06, 2011 at 03:10:28PM +0100, David Laight wrote:
static void mlx4_bf_copy(unsigned long *dst, unsigned long *src,
unsigned bytecnt) {
+ int i;
+ __le32 *psrc = (__le32 *)src;
+
+ /*
+* the buffer is already in big endian. For little endian
machines that's
On Tue, Oct 04, 2011 at 08:02:12AM +0200, Benjamin Herrenschmidt wrote:
On Mon, 2011-10-03 at 17:53 -0300, Thadeu Lima de Souza Cascardo wrote:
.../...
Can you also send me the output of ethtool -i?
It seems that there is a problem with write combining on Power
processors, we
On Mon, Oct 03, 2011 at 02:56:08PM +, Yevgeny Petrilin wrote:
Hello, Yevgeny.
We use a MT26448 (lspci -v output bellow) on a POWER7. Any other
information, tests or debug patches you want me to try, just tell me.
I expected this was really not the proper fix, but thought it would
this kind of error from happening is reserve the
page addressed as 0 so it cannot be allocated for a DMA mapping.
Ben Herrenschmidt deserves the credit for this patch. He pointed out the
solution and what code would do the job.
v2:
Add a comment in the code.
Signed-off-by: Thadeu Lima de Souza
this kind of error from happening is reserve the
page addressed as 0 so it cannot be allocated for a DMA mapping.
Ben Herrenschmidt deserves the credit for this patch. He pointed out the
solution and what code would do the job.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
that problem and maintain the
compatibility intended with the ppc64 symlink.
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@linux.vnet.ibm.com
---
arch/powerpc/platforms/pseries/eeh.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/eeh.c
Signed-off-by: Thadeu Lima de Souza Cascardo casca...@holoscopio.com
---
arch/powerpc/mm/tlb_low_64e.S |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/mm/tlb_low_64e.S b/arch/powerpc/mm/tlb_low_64e.S
index f288279..8b04c54 100644
--- a/arch/powerpc/mm
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