Hi Boris,
On Sat, Dec 14, 2019 at 5:57 PM Borislav Petkov wrote:
>
> On Fri, Nov 29, 2019 at 01:53:36AM +0530, Bhupesh Sharma wrote:
> > Bhupesh Sharma (5):
> > crash_core, vmcoreinfo: Append 'MAX_PHYSMEM_BITS' to vmcoreinfo
> > arm64/crash_core: Export TCR_EL1.T1SZ in vmcoreinfo
> > Docume
On Thu, Sep 19, 2019 at 12:04:27AM +1000, Michael Ellerman wrote:
> Michal Suchánek writes:
> > On Wed, 6 Mar 2019 12:10:38 +1100
> > Suraj Jitindar Singh wrote:
> >
> >> Commit ddf35cf3764b ("powerpc: Use barrier_nospec in copy_from_user()")
> >> Added barrier_nospec before loading from user-co
On 12/03/2019 02:48 PM, Anshuman Khandual wrote:
> This adds tests which will validate architecture page table helpers and
> other accessors in their compliance with expected generic MM semantics.
> This will help various architectures in validating changes to existing
> page table helpers or ad
H_PUT_TCE_INDIRECT uses a shared page to send up to 512 TCE to
a hypervisor in a single hypercall. This does not work for secure VMs
as the page needs to be shared or the VM should use H_PUT_TCE instead.
This disables H_PUT_TCE_INDIRECT by clearing the FW_FEATURE_PUT_TCE_IND
feature bit so SVMs wi
H_PUT_TCE_INDIRECT allows packing up to 512 TCE updates into a single
hypercall; H_STUFF_TCE can clear lots in a single hypercall too.
However, unlike H_STUFF_TCE (which writes the same TCE to all entries),
H_PUT_TCE_INDIRECT uses a 4K page with new TCEs. In a secure VM
environment this means shar
By default a pseries guest supports a H_PUT_TCE hypercall which maps
a single IOMMU page in a DMA window. Additionally the hypervisor may
support H_PUT_TCE_INDIRECT/H_STUFF_TCE which update multiple TCEs at once;
this is advertised via the device tree /rtas/ibm,hypertas-functions
property which Lin
This enables IOMMU for SVM. Instead of sharing
a H_PUT_TCE_INDIRECT page, this uses H_PUT_TCE for mapping
and H_STUFF_TCE for clearing TCEs which should bring
acceptable performance at the boot time; otherwise things
work with the same speed anyway.
Please comment. Thanks.
This is based on sha1
From: Ram Pai
This reverts commit edea902c1c1efb855f77e041f9daf1abe7a9768a.
At the time the change allowed direct DMA ops for secure VMs; however
since then we switched on using SWIOTLB backed with IOMMU (direct mapping)
and to make this work, we need dma_iommu_ops which handles all cases
includ
On Sat, Dec 14, 2019 at 06:12:08PM -0800, Sukadev Bhattiprolu wrote:
> +unsigned long kvmppc_h_svm_init_abort(struct kvm *kvm)
> +{
> + int i;
> +
> + if (!(kvm->arch.secure_guest & KVMPPC_SECURE_INIT_START))
> + return H_UNSUPPORTED;
> +
> + for (i = 0; i < KVM_ADDRESS_SPAC
On Tue, 2019-12-03 at 14:46 +1100, Alastair D'Silva wrote:
> From: Alastair D'Silva
>
> This patch retrieves proprietary formatted SMART data and makes it
> available via ndctl. A later contribution will be made to ndctl to
> parse this data.
>
> Signed-off-by: Alastair D'Silva
Dan,
I should
On Sat, 14 Dec 2019 17:54:47 +
Yangtao Li wrote:
> Use devm_platform_ioremap_resource() to simplify code.
>
> Signed-off-by: Yangtao Li
> ---
> drivers/soc/qcom/llcc-qcom.c| 7 +--
> drivers/soc/qcom/qcom-geni-se.c | 4 +---
> drivers/soc/qcom/qcom_aoss.c| 4 +---
> drivers/soc
On Fri, Dec 13, 2019 at 2:11 AM Thadeu Lima de Souza Cascardo
wrote:
>
> Fedora binutils has been patched to show "other info" for a symbol at the
> end of the line. This was done in order to support unmaintained scripts
> that would break with the extra info. [1]
>
> [1]
> https://src.fedoraproj
On Fri, Dec 13, 2019 at 9:02 AM Andrii Nakryiko
wrote:
>
> On Fri, Dec 13, 2019 at 2:11 AM Thadeu Lima de Souza Cascardo
> wrote:
> >
> > Fedora binutils has been patched to show "other info" for a symbol at the
> > end of the line. This was done in order to support unmaintained scripts
> > that
https://bugzilla.kernel.org/show_bug.cgi?id=205099
--- Comment #8 from Erhard F. (erhar...@mailbox.org) ---
Found out this is probably a cause for bug #205283. For doing some btrfs tests
with 5.5-rc1 kernel I needed to disable KASAN in lib/raid6/Makefile
(KASAN_SANITIZE := n) as btrfs pulls in rai
https://bugzilla.kernel.org/show_bug.cgi?id=205283
--- Comment #3 from Erhard F. (erhar...@mailbox.org) ---
Steps to reproduce:
1.) Configure G4 kernel with KASAN enabled
2.) Disable KASAN in lib/raid6/Makefile with KASAN_SANITIZE := n (to allow the
btrfs module to load)
3.) # modprobe -v btrfs
4
https://bugzilla.kernel.org/show_bug.cgi?id=205283
Erhard F. (erhar...@mailbox.org) changed:
What|Removed |Added
Kernel Version|5.4-rc4 |5.5-rc1
See
Power9 introduced Virtual Accelerator Switchboard (VAS) which allows
userspace to communicate with Nest Accelerator (NX) directly. But
kernel has to establish channel to NX for userspace. This document
describes user space API that application can use to establish
communication channel.
Signed-o
When window is opened, pid reference is taken for user space
windows. Not needed for kernel windows. So remove 'pid' in
vas_tx_win_attr struct.
Signed-off-by: Haren Myneni
---
arch/powerpc/include/asm/vas.h| 1 -
drivers/crypto/nx/nx-commom-powernv.c | 1 -
2 files changed, 2 deletions
On power9, userspace can send GZIP compression requests directly to NX
once kernel establishes NX channel / window. This patch provides GZIP
engine access to user space via /dev/crypto/nx-gzip device node with
open, VAS_TX_WIN_OPEN ioctl, mmap and close operations.
Each window corresponds to fil
Changes to probe GZIP device-tree nodes, open RX windows and setup
GZIP compression type. No plans to provide GZIP usage in kernel right
now, but this patch enables GZIP for user space usage.
Signed-off-by: Haren Myneni
---
drivers/crypto/nx/nx-commom-powernv.c | 20 +++-
1 fil
Make code generic so that extend it to support new GZIP compression
type. Changed nx842 reference to nx and moved some code to new
functions. The actual functionality is not changed.
Signed-off-by: Haren Myneni
---
drivers/crypto/nx/nx-commom-powernv.c | 160 +-
Move common code for 842 and GZIP such as initializtion, read device
tree entries and allocation of receive and send (kernel usage) windows
to nx-common-powernv.c and keep 842 specific code in nx-842-powernv.c
Signed-off-by: Haren Myneni
---
drivers/crypto/nx/Makefile| 2 +-
driv
coproc entry is initialized during NX probe on power9, but not on P8.
nx842_delete_coprocs() is used for both and frees receive window if it
is allocated. Getting crash for rmmod on P8 since coproc->vas.rxwin
is not initialized.
This patch replaces kmalloc with kzalloc in nx842_powernv_probe()
Define the VAS_TX_WIN_OPEN ioctl interface for NX GZIP access
from user space. This interface is used to open GZIP send window and
mmap region which can be used by userspace to send requests to NX
directly with copy/paste instructions.
Signed-off-by: Haren Myneni
---
Documentation/ioctl/ioctl-
Initialize send and receive window attributes for GZIP high and
normal priority types.
Signed-off-by: Haren Myneni
---
arch/powerpc/platforms/powernv/vas-window.c | 17 -
1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/vas-window.c
Define an interface that the NX drivers can use to find the physical
paste address of a send window. This interface is expected to be used
with the mmap() operation of the NX driver's device. i.e the user space
process can use driver's mmap() operation to map the send window's paste
address into
Power9 processor supports Virtual Accelerator Switchboard (VAS) which
allows kernel and userspace to send compression requests to Nest
Accelerator (NX) directly. The NX unit comprises of 2 842 compression
engines and 1 GZIP engine. Linux kernel already has 842 compression
support on kernel. This
On Sun, Dec 15, 2019 at 6:48 PM Marc Zyngier wrote:
>
> On Sat, 14 Dec 2019 17:54:47 +
> Yangtao Li wrote:
>
> > Use devm_platform_ioremap_resource() to simplify code.
> >
> > Signed-off-by: Yangtao Li
> > ---
> > drivers/soc/qcom/llcc-qcom.c| 7 +--
> > drivers/soc/qcom/qcom-geni-s
On Sat, Dec 14, 2019 at 05:54:39PM +, Yangtao Li wrote:
> Use devm_platform_ioremap_resource() to simplify code.
>
> Signed-off-by: Yangtao Li
> ---
> drivers/soc/samsung/exynos-pmu.c | 4 +---
Thanks, applied.
Best regards,
Krzysztof
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