On Mon, Oct 19, 2020 at 07:50:41AM +0200, Christophe Leroy wrote:
> Le 19/10/2020 à 06:55, Joel Stanley a écrit :
> >>In the old days, marking a function 'static inline' was forcing
> >>GCC to inline, but since commit ac7c3e4ff401 ("compiler: enable
> >>CONFIG_OPTIMIZE_INLINING forcibly") GCC may
Hi Ganesh,
Some comments below ...
Ganesh Goudar writes:
> To check machine check handling, add support to inject slb
> multihit errors.
>
> Cc: Kees Cook
> Reviewed-by: Michal Suchánek
> Co-developed-by: Mahesh Salgaonkar
> Signed-off-by: Mahesh Salgaonkar
> Signed-off-by: Ganesh Goudar
>
From: Mathieu Desnoyers
The placeholder for instruction selection should use the second
argument's operand, which is %1, not %0. This could generate incorrect
assembly code if the instruction selection for argument %0 ever differs
from argument %1.
Fixes: 9bf2b5cdc5fe ("powerpc: Fixes for
GCC 4.9 sometimes fails to build with "m<>" constraint in
inline assembly.
CC lib/iov_iter.o
In file included from ./arch/powerpc/include/asm/cmpxchg.h:6:0,
from ./arch/powerpc/include/asm/atomic.h:11,
from ./include/linux/atomic.h:7,
from
On Mon, Oct 19, 2020 at 09:59:57PM +1100, Michael Ellerman wrote:
> Hi Ganesh,
>
> Some comments below ...
>
> Ganesh Goudar writes:
> > To check machine check handling, add support to inject slb
> > multihit errors.
> >
> > Cc: Kees Cook
> > Reviewed-by: Michal Suchánek
> > Co-developed-by:
Implements H_RPT_INVALIDATE hcall and supports only nested case
currently.
A KVM capability KVM_CAP_RPT_INVALIDATE is added to indicate the
support for this hcall.
Signed-off-by: Bharata B Rao
---
Documentation/virt/kvm/api.rst| 17
://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Christophe-Leroy/drm-amd-display-Fix-missing-declaration-of-enable_kernel_vsx/20201019-174155
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
7cf726a59435301046250c42131554d9ccc566b8
In the nested KVM case, replace H_TLB_INVALIDATE by the new hcall
H_RPT_INVALIDATE if available. The availability of this hcall
is determined from "hcall-rpt-invalidate" string in ibm,hypertas-functions
DT property.
Signed-off-by: Bharata B Rao
---
arch/powerpc/kvm/book3s_64_mmu_radix.c | 26
Le 19/10/2020 à 10:32, Segher Boessenkool a écrit :
On Mon, Oct 19, 2020 at 07:50:41AM +0200, Christophe Leroy wrote:
Le 19/10/2020 à 06:55, Joel Stanley a écrit :
In the old days, marking a function 'static inline' was forcing
GCC to inline, but since commit ac7c3e4ff401 ("compiler: enable
Include in order to avoid following build failure
because of missing declaration of enable_kernel_vsx()
CC [M] drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dcn_calcs.o
In file included from
./drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services_types.h:29,
from
This patchset adds support for the new hcall H_RPT_INVALIDATE
(currently handles nested case only) and replaces the nested tlb flush
calls with this new hcall if the support for the same exists.
Changes in v1:
-
- Removed the bits that added the FW_FEATURE_RPT_INVALIDATE feature
as
In several places, inline assembly uses the "%Un" modifier
to enable the use of instruction with pre-update addressing,
but the associated "<>" constraint is missing.
As mentioned in previous patch, this fails with gcc 4.9, so
"<>" can't be used directly.
Use UPD_CONSTR macro everywhere %Un
patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Christophe-Leroy/drm-amd-display-Fix-missing-declaration-of-enable_kernel_vsx/20201019-174155
base: https://git.kernel.org/pub/scm/linux/kernel/git
submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Christophe-Leroy/powerpc-uaccess-Don-t-use-m-constraint-with-GCC-4-9/20201019-201504
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc
On Fri, Oct 16, 2020 at 01:53:40PM -0500, Rob Herring wrote:
> On Thu, Oct 15, 2020 at 12:35:54AM +0300, Serge Semin wrote:
> > On Wed, Oct 14, 2020 at 10:18:18PM +0200, Krzysztof Kozlowski wrote:
> > > On Wed, Oct 14, 2020 at 01:13:53PM +0300, Serge Semin wrote:
> > > > The DWC USB3 driver and
://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Christophe-Leroy/drm-amd-display-Fix-missing-declaration-of-enable_kernel_vsx/20201019-174155
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
7cf726a59435301046250c42131554d9ccc566b8
On 04/10/20 02:18, Joe Perches wrote:
> This should be const, so make it so.
>
> Signed-off-by: Joe Perches
> ---
> arch/powerpc/kvm/book3s_hv.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
> index
to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Christophe-Leroy/powerpc-uaccess-Don-t-use-m-constraint-with-GCC-4-9/20201019-201504
base
On Mon, Oct 19, 2020 at 10:54:40AM +0200, Christophe Leroy wrote:
> Le 19/10/2020 à 10:32, Segher Boessenkool a écrit :
> >The kernel should just use __always_inline if that is what it *wants*;
> >that is true here most likely. GCC could perhaps improve its heuristics
> >so that it no longer
From: Hao Si
The local variable 'cpumask_t mask' is in the stack memory, and its address
is assigned to 'desc->affinity' in 'irq_set_affinity_hint()'.
But the memory area where this variable is located is at risk of being
modified.
During LTP testing, the following error was generated:
Unable
On Fri Oct 16, 2020 at 10:48 AM CDT, Christophe Leroy wrote:
>
>
> Le 15/10/2020 à 17:01, Christopher M. Riedl a écrit :
> > Reuse the "safe" implementation from signal.c except for calling
> > unsafe_copy_from_user() to copy into a local buffer. Unlike the
> > unsafe_copy_{vsx,fpr}_to_user()
On Fri Oct 16, 2020 at 10:56 AM CDT, Christophe Leroy wrote:
>
>
> Le 15/10/2020 à 17:01, Christopher M. Riedl a écrit :
> > From: Daniel Axtens
> >
> > Previously setup_trampoline() performed a costly KUAP switch on every
> > uaccess operation. These repeated uaccess switches cause a
On Fri Oct 16, 2020 at 11:00 AM CDT, Christophe Leroy wrote:
>
>
> Le 15/10/2020 à 17:01, Christopher M. Riedl a écrit :
> > From: Daniel Axtens
> >
> > Add uaccess blocks and use the 'unsafe' versions of functions doing user
> > access where possible to reduce the number of times uaccess has to
On Fri Oct 16, 2020 at 11:07 AM CDT, Christophe Leroy wrote:
>
>
> Le 15/10/2020 à 17:01, Christopher M. Riedl a écrit :
> > From: Daniel Axtens
> >
> > Add uaccess blocks and use the 'unsafe' versions of functions doing user
> > access where possible to reduce the number of times uaccess has to
On Fri Oct 16, 2020 at 10:17 AM CDT, Christophe Leroy wrote:
>
>
> Le 15/10/2020 à 17:01, Christopher M. Riedl a écrit :
> > Implement raw_copy_from_user_allowed() which assumes that userspace read
> > access is open. Use this new function to implement raw_copy_from_user().
> > Finally, wrap the
On Mon, Oct 19, 2020 at 12:12:46PM +, Christophe Leroy wrote:
> GCC 4.9 sometimes fails to build with "m<>" constraint in
> inline assembly.
> --- a/arch/powerpc/include/asm/uaccess.h
> +++ b/arch/powerpc/include/asm/uaccess.h
> @@ -223,7 +223,7 @@ do {
On Mon, Oct 19, 2020 at 12:12:47PM +, Christophe Leroy wrote:
> From: Mathieu Desnoyers
>
> The placeholder for instruction selection should use the second
> argument's operand, which is %1, not %0. This could generate incorrect
> assembly code if the instruction selection for argument %0
On Mon, Oct 19, 2020 at 12:12:48PM +, Christophe Leroy wrote:
> In several places, inline assembly uses the "%Un" modifier
> to enable the use of instruction with pre-update addressing,
Calling this "pre-update" is misleading: the register is not updated
before the address is generated (or
On Fri Oct 16, 2020 at 4:02 AM CDT, Christophe Leroy wrote:
>
>
> Le 15/10/2020 à 17:01, Christopher M. Riedl a écrit :
> > Functions called between user_*_access_begin() and user_*_access_end()
> > should be either inlined or marked 'notrace' to prevent leaving
> > userspace access exposed. Mark
Le 20/10/2020 à 04:42, Christopher M. Riedl a écrit :
On Fri Oct 16, 2020 at 10:56 AM CDT, Christophe Leroy wrote:
Le 15/10/2020 à 17:01, Christopher M. Riedl a écrit :
From: Daniel Axtens
Previously setup_trampoline() performed a costly KUAP switch on every
uaccess operation. These
randconfig-a004-20201019
x86_64 randconfig-a002-20201019
x86_64 randconfig-a006-20201019
x86_64 randconfig-a003-20201019
x86_64 randconfig-a005-20201019
x86_64 randconfig-a001-20201019
i386 randconfig
-20201019
x86_64 randconfig-a002-20201019
x86_64 randconfig-a006-20201019
x86_64 randconfig-a003-20201019
x86_64 randconfig-a005-20201019
x86_64 randconfig-a001-20201019
i386 randconfig-a006-20201019
i386
allmodconfig
powerpc allyesconfig
powerpc allmodconfig
powerpc allnoconfig
x86_64 randconfig-a004-20201019
x86_64 randconfig-a002-20201019
x86_64 randconfig
POWER10 DD1 has an issue where it generates watchpoint exceptions when it
shouldn't. The conditions where this occur are:
- octword op
- ending address of DAWR range is less than starting address of op
- those addresses need to be in the same or in two consecutive 512B
blocks
- 'op address
POWER10_DD1 feature flag will be needed while adding
conditional code that applies only for Power10 DD1.
Signed-off-by: Ravi Bangoria
---
arch/powerpc/include/asm/cputable.h | 8 ++--
arch/powerpc/kernel/dt_cpu_ftrs.c | 3 +++
arch/powerpc/kernel/prom.c | 9 +
3 files
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