On Mon, 2013-05-20 at 09:57 +0530, Aneesh Kumar K.V wrote:
Michael Neuling mi...@neuling.org writes:
Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com wrote:
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
We need to use smb_rmb when looking at hpte slot array. Otherwise we
Benjamin Herrenschmidt b...@kernel.crashing.org writes:
On Mon, 2013-05-20 at 09:57 +0530, Aneesh Kumar K.V wrote:
Michael Neuling mi...@neuling.org writes:
Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com wrote:
From: Aneesh Kumar K.V aneesh.ku...@linux.vnet.ibm.com
We need to use
If we are emulating an instruction inside an active user transaction that
touches memory, the kernel can't emulate it as it operates in transactional
suspend context. We need to abort these transactions and send them back to
userspace for the hardware to rollback.
We can service these if the
On Fri, 2013-05-03 at 17:48 -0700, Nishanth Aravamudan wrote:
Signed-off-by: Nishanth Aravamudan n...@us.ibm.com
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index ae9f433..a792157 100644
--- a/arch/powerpc/kernel/cputable.c
+++
Hi,
3.9.3 introduced the following build failure:
CC arch/powerpc/kernel/rtas.o
arch/powerpc/kernel/rtas.c: In function ‘rtas_cpu_state_change_mask’:
arch/powerpc/kernel/rtas.c:843:4: error: implicit declaration of function
‘cpu_down’ [-Werror=implicit-function-declaration]
cc1: all
On 05/17/2013 11:09 AM, Shawn Guo wrote:
On Fri, May 17, 2013 at 10:59:17AM +0200, Marc Kleine-Budde wrote:
This patch removes the Kconfig symbol HAVE_CAN_FLEXCAN from
arch/{arm,powerpc}
and allowing compilation unconditionally on all arm and powerpc platforms.
This brings a bigger compile
Removing some boilerplate by using module_i2c_driver instead of calling
register and unregister in the otherwise empty init/exit functions
Signed-off-by: Peter Huewe peterhu...@gmx.de
---
arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c | 13 +
1 file changed, 1 insertion(+), 12
Previously we initialized dev-current_state to 4 (PCI_D3cold), but I think
we wanted PCI_UNKNOWN (5) here based on the comment and the fact that the
generic version of this code, pci_setup_device(), uses PCI_UNKNOWN.
Signed-off-by: Bjorn Helgaas bhelg...@google.com
---
Previously we initialized dev-current_state to 4 (PCI_D3cold), but I think
we wanted PCI_UNKNOWN (5) here based on the comment and the fact that the
generic version of this code, pci_setup_device(), uses PCI_UNKNOWN.
Signed-off-by: Bjorn Helgaas bhelg...@google.com
---
arch/sparc/kernel/pci.c |
On Mon, May 20, 2013 at 5:19 PM, Bjorn Helgaas bhelg...@google.com wrote:
Previously we initialized dev-current_state to 4 (PCI_D3cold), but I think
we wanted PCI_UNKNOWN (5) here based on the comment and the fact that the
generic version of this code, pci_setup_device(), uses PCI_UNKNOWN.
Will Schmidt will_schm...@vnet.ibm.com wrote:
On Fri, 2013-05-03 at 17:48 -0700, Nishanth Aravamudan wrote:
Signed-off-by: Nishanth Aravamudan n...@us.ibm.com
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index ae9f433..a792157 100644
---
On Mon, 2013-05-20 at 17:19 -0600, Bjorn Helgaas wrote:
Previously we initialized dev-current_state to 4 (PCI_D3cold), but I think
we wanted PCI_UNKNOWN (5) here based on the comment and the fact that the
generic version of this code, pci_setup_device(), uses PCI_UNKNOWN.
Signed-off-by:
On Mon, May 20, 2013 at 5:42 PM, Benjamin Herrenschmidt
b...@kernel.crashing.org wrote:
On Mon, 2013-05-20 at 17:19 -0600, Bjorn Helgaas wrote:
Previously we initialized dev-current_state to 4 (PCI_D3cold), but I think
we wanted PCI_UNKNOWN (5) here based on the comment and the fact that the
If we are emulating an instruction inside an active user transaction that
touches memory, the kernel can't emulate it as it operates in transactional
suspend context. We need to abort these transactions and send them back to
userspace for the hardware to rollback.
We can service these if the
From: Bjorn Helgaas bhelg...@google.com
Date: Mon, 20 May 2013 17:19:16 -0600
Previously we initialized dev-current_state to 4 (PCI_D3cold), but I think
we wanted PCI_UNKNOWN (5) here based on the comment and the fact that the
generic version of this code, pci_setup_device(), uses PCI_UNKNOWN.
Hi Ben and Kumar,
I'm really appreciate if you could help me to review this patches
for these patches were pending nearly a month.
Thanks.
-Hongtao
-Original Message-
From: Jia Hongtao-B38951
Sent: Monday, May 13, 2013 2:20 PM
To: 'Benjamin Herrenschmidt'
Cc:
This accelerates IOMMU operations in real and virtual
mode in the host kernel for the KVM guest.
The first patch with multitce support is useful for emulated devices as is.
The other patches are designed for VFIO although this series
does not contain any VFIO related code as the connection
This adds real mode handlers for the H_PUT_TCE_INDIRECT and
H_STUFF_TCE hypercalls for QEMU emulated devices such as virtio
devices or emulated PCI. These calls allow adding multiple entries
(up to 512) into the TCE table in one call which saves time on
transition to/from real mode.
This adds a
The current VFIO-on-POWER implementation supports only user mode
driven mapping, i.e. QEMU is sending requests to map/unmap pages.
However this approach is really slow, so we want to move that to KVM.
Since H_PUT_TCE can be extremely performance sensitive (especially with
network adapters where
This allows the host kernel to handle H_PUT_TCE, H_PUT_TCE_INDIRECT
and H_STUFF_TCE requests without passing them to QEMU, which should
save time on switching to QEMU and back.
Both real and virtual modes are supported - whenever the kernel
fails to handle TCE request, it passes it to the virtual
This adds special support for huge pages (16MB). The reference
counting cannot be easily done for such pages in real mode (when
MMU is off) so we added a list of huge pages. It is populated in
virtual mode and get_page is called just once per a huge page.
Real mode handlers check if the
The TLB has 512 congruence classes (2048 entries 4 way set associative)
while P7 had 128
Signed-off-by: Benjamin Herrenschmidt b...@kernel.crashing.org
---
arch/powerpc/kernel/cpu_setup_power.S |8 ++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git
The message is only meant to be displayed if resource 0 is empty,
but was displayed if any is.
Signed-off-by: Benjamin Herrenschmidt b...@kernel.crashing.org
---
arch/powerpc/kernel/pci-common.c |7 ---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git
We use two flags, one to indicate an invalidation is needed after
creating a new entry and one to indicate an invalidation is needed
after removing an entry. However we were testing the wrong flag
in the remove case.
Signed-off-by: Benjamin Herrenschmidt b...@kernel.crashing.org
---
The series adds support for VFIO on POWERPC in user space (such as QEMU).
The in-kernel real mode IOMMU support is added by another series posted
separately.
As the first and main aim of this series is the POWERNV platform support,
the Enable on POWERNV platform patch goes first and introduces an
This initializes IOMMU groups based on the IOMMU configuration
discovered during the PCI scan on POWERNV (POWER non virtualized)
platform. The IOMMU groups are to be used later by the VFIO driver,
which is used for PCI pass through.
It also implements an API for mapping/unmapping pages for
guest
VFIO implements platform independent stuff such as
a PCI driver, BAR access (via read/write on a file descriptor
or direct mapping when possible) and IRQ signaling.
The platform dependent part includes IOMMU initialization
and handling. This implements an IOMMU driver for VFIO
which does
The enables VFIO on the pSeries platform, enabling user space
programs to access PCI devices directly.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
Cc: David Gibson da...@gibson.dropbear.id.au
Signed-off-by: Paul Mackerras pau...@samba.org
---
arch/powerpc/platforms/pseries/iommu.c |4
Oops, wrong subject (cut-n-paste) :)
There are 3 patches, not 5.
On 05/21/2013 01:33 PM, Alexey Kardashevskiy wrote:
The series adds support for VFIO on POWERPC in user space (such as QEMU).
The in-kernel real mode IOMMU support is added by another series posted
separately.
As the first
Older kernels such as 3.6 used by Fedora 18 have a problem with
the way more recent kernels configure the PCI bridge windows due
to my crappy old resource allocation code (we now use the generic
code which is way better).
In order to be able to safely kexec into those earlier kernels
(which we
Peter Zijlstra pet...@infradead.org wrote:
On Thu, May 16, 2013 at 05:36:11PM +0200, Stephane Eranian wrote:
On Thu, May 16, 2013 at 1:16 PM, Peter Zijlstra pet...@infradead.org
wrote:
On Thu, May 16, 2013 at 08:15:17PM +1000, Michael Neuling wrote:
Peter,
BTW PowerPC also has
When error occurs, need return the related error code to let upper
caller know about it.
ppc_md.nvram_size() can return the error code (e.g. core99_nvram_size()
in 'arch/powerpc/platforms/powermac/nvram.c').
And when '*ppos = size', need return -ESPIPE (Illegal seek)
The original related
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