VAS allocate, modify and deallocate HCALLs returns
H_LONG_BUSY_ORDER_1_MSEC or H_LONG_BUSY_ORDER_10_MSEC for busy
delay and expects OS to reissue HCALL after that delay. But using
msleep() will often sleep at least 20 msecs even though the
hypervisor suggests OS reissue these HCALLs after 1 or 10ms
/linux.git next
patch link:
https://lore.kernel.org/r/1655B2CD28DA1F77%2B20231225025824.830-1-luming.yu%40shingroup.cn
patch subject: [PATCH 1/1] powerpc/powernv: fix up kernel compile issues
config: powerpc-powernv_defconfig
(https://download.01.org/0day-ci/archive/20231227/20231227164
Hi Michael,
On 12/27/23 10:27, Michael Ellerman wrote:
> Geoff Levand writes:
>> Commit 8c5fa3b5c4df3d071dab42b04b971df370d99354 (powerpc/64: Make ELFv2 the
>> default for big-endian builds), merged in Linux-6.5-rc1 changes the calling
>> ABI
>> in a way that is incompatible with the current cod
Hi,
On 12/27/23 16:24, Nicholas Piggin wrote:
> This (hopefully) fixes the ELFv2 bug that Geoff reported, with patch
> 1. And a couple of other possible improvements I noticed.
>
> I don't have a PS3 setup[*] so I have only compile tested these, I'm
> sorry.
>
> [*] Is RPCS3 usable for this kind
On Mon, Dec 25, 2023 at 4:06 PM Chancel Liu wrote:
>
> There is error message when defer probe happens:
>
> fsl_rpmsg rpmsg_audio: Unbalanced pm_runtime_enable!
>
> Fix the error handler with pm_runtime_enable.
>
> Fixes: b73d9e6225e8 ("ASoC: fsl_rpmsg: Add CPU DAI driver for audio base on
> rpms
use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url:
https://github.com/intel-lab-lkp/linux/commits/Pingfan-Liu/powerpc-kernel-Remove-check-on-paca_ptrs_size/20231227-104412
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc
use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url:
https://github.com/intel-lab-lkp/linux/commits/Pingfan-Liu/powerpc-kernel-Remove-check-on-paca_ptrs_size/20231227-104412
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc
This series unifies the kernel-mode FPU API across several architectures
by wrapping the existing functions (where needed) in consistently-named
functions placed in a consistent header location, with mostly the same
semantics: they can be called from preemptible or non-preemptible task
context, and
Several architectures provide an API to enable the FPU and run
floating-point SIMD code in kernel space. However, the function names,
header locations, and semantics are inconsistent across architectures,
and FPU support may be gated behind other Kconfig options.
Provide a standard way for archite
ARM provides an equivalent to the common kernel-mode FPU API, but in a
different header and using different function names. Add a wrapper
header, and export CFLAGS adjustments as found in lib/raid6/Makefile.
Reviewed-by: Christoph Hellwig
Signed-off-by: Samuel Holland
---
Changes in v2:
- Remo
arm64 provides an equivalent to the common kernel-mode FPU API, but in a
different header and using different function names. Add a wrapper
header, and export CFLAGS adjustments as found in lib/raid6/Makefile.
Reviewed-by: Christoph Hellwig
Signed-off-by: Samuel Holland
---
Changes in v2:
- Re
Now that CC_FLAGS_FPU is exported and can be used anywhere in the source
tree, use it instead of duplicating the flags here.
Signed-off-by: Samuel Holland
---
Changes in v2:
- New patch for v2
arch/arm64/lib/Makefile | 6 ++
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/ar
Now that CC_FLAGS_FPU is exported and can be used anywhere in the source
tree, use it instead of duplicating the flags here.
Reviewed-by: Christoph Hellwig
Signed-off-by: Samuel Holland
---
(no changes since v1)
arch/arm/lib/Makefile | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
di
Now that CC_FLAGS_FPU is exported and can be used anywhere in the source
tree, use it instead of duplicating the flags here.
Reviewed-by: Christoph Hellwig
Signed-off-by: Samuel Holland
---
(no changes since v1)
lib/raid6/Makefile | 31 ---
1 file changed, 8 insert
LoongArch already provides kernel_fpu_begin() and kernel_fpu_end() in
asm/fpu.h, so it only needs to add kernel_fpu_available() and export
the CFLAGS adjustments.
Acked-by: WANG Xuerui
Reviewed-by: Christoph Hellwig
Signed-off-by: Samuel Holland
---
(no changes since v1)
arch/loongarch/Kconf
PowerPC provides an equivalent to the common kernel-mode FPU API, but in
a different header and using different function names. The PowerPC API
also requires a non-preemptible context. Add a wrapper header, and
export the CFLAGS adjustments.
Reviewed-by: Christoph Hellwig
Signed-off-by: Samuel Ho
x86 already provides kernel_fpu_begin() and kernel_fpu_end(), but in a
different header. Add a wrapper header, and export the CFLAGS
adjustments as found in lib/Makefile.
Reviewed-by: Christoph Hellwig
Signed-off-by: Samuel Holland
---
(no changes since v1)
arch/x86/Kconfig | 1 +
This is motivated by the amdgpu DRM driver, which needs floating-point
code to support recent hardware. That code is not performance-critical,
so only provide a minimal non-preemptible implementation for now.
Signed-off-by: Samuel Holland
---
Changes in v2:
- Remove RISC-V architecture-specific
From: Michael Ellerman
The compiler flags enable altivec, but that is not required; hard-float
is sufficient for the code to build and function.
Drop altivec from the compiler flags and adjust the enable/disable code
to only enable FPU use.
Signed-off-by: Michael Ellerman
Signed-off-by: Samuel
Now that all previously-supported architectures select
ARCH_HAS_KERNEL_FPU_SUPPORT, this code can depend on that symbol instead
of the existing list of architectures. It can also take advantage of the
common kernel-mode FPU API and method of adjusting CFLAGS.
Signed-off-by: Samuel Holland
---
Ch
This ensures no compiler-generated floating-point code can appear
outside kernel_fpu_{begin,end}() sections, and some architectures
enforce this separation.
Signed-off-by: Samuel Holland
---
Changes in v2:
- Declare test_fpu() in a header
lib/Makefile| 3 ++-
lib/test
Now that ARCH_HAS_KERNEL_FPU_SUPPORT provides a common way to compile
and run floating-point code, this test is no longer x86-specific.
Reviewed-by: Christoph Hellwig
Signed-off-by: Samuel Holland
---
(no changes since v1)
lib/Kconfig.debug | 2 +-
lib/Makefile| 25 ++--
Samuel Holland writes:
> PowerPC provides an equivalent to the common kernel-mode FPU API, but in
> a different header and using different function names. The PowerPC API
> also requires a non-preemptible context. Add a wrapper header, and
> export the CFLAGS adjustments.
>
> Reviewed-by: Christop
use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url:
https://github.com/intel-lab-lkp/linux/commits/Pingfan-Liu/powerpc-kernel-Remove-check-on-paca_ptrs_size/20231227-104412
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc
I've been evaluating some new options for our POWER9-based hardware in the NVMe
space, and would like some clarification on the current status of PCIe hotplug
for the PowerNV platforms.
>From what I understand, the pnv_php driver provides the basic hotplug
>functionality on PowerNV. What I'm n
Hrmm, potentially related, I'm getting a kernel oops when I try to hot unplug
the entire PCIe switch from the PHB4:
[ 3771.106478] Kernel attempted to read user page (10) - exploit attempt? (uid:
0)
[ 3771.106514] BUG: Kernel NULL pointer dereference on read at 0x0010
[ 3771.106531] Faulting
Looks good:
Reviewed-by: Christoph Hellwig
Looks good:
Reviewed-by: Christoph Hellwig
Thanks for all the great documentation!
Looks good:
Reviewed-by: Christoph Hellwig
On Wed, Dec 27, 2023 at 05:42:00PM -0800, Samuel Holland wrote:
> This is motivated by the amdgpu DRM driver, which needs floating-point
> code to support recent hardware. That code is not performance-critical,
> so only provide a minimal non-preemptible implementation for now.
>
> Signed-off-by:
Looks good:
Reviewed-by: Christoph Hellwig
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