Cedric,
On Wed, Dec 01 2021 at 08:14, Cédric Le Goater wrote:
> On 11/30/21 23:41, Thomas Gleixner wrote:
>> It's not the core function. It's the patch above and I'm a moron.
>
> All good now. Ship it !
thanks a lot for testing this and dealing with the fallout. Much
appreciated!
tglx
Hello,
On Wed, Dec 01, 2021 at 10:37:47AM +0800, Baoquan He wrote:
> Hi,
>
> On 11/25/21 at 07:02pm, Michal Suchanek wrote:
> > Hello,
> >
> > This is resend of the KEXEC_SIG patchset.
> >
> > The first patch is new because it'a a cleanup that does not require any
> > change to the module verif
On Tue, 2021-11-30 at 12:56 +0100, Joakim Tjernlund wrote:
> On Mon, 2021-11-29 at 23:48 +, Eugene Bordenkircher wrote:
> > Agreed,
> >
> > We are happy pick up the torch on this, but I'd like to try and hear from
> > Joakim first before we do. The patch set is his, so I'd like to give him
Now that there's a platform that can make good use of it, here's
a series that can prevent the hash MMU code being built for 64s
platforms that don't need it.
Since v5:
- Make cxl select hash.
- Add new patch (15) to prevent radix using different get_unmapped_area
code when hash support is disab
FW_FEATURE_NATIVE_ALWAYS and FW_FEATURE_NATIVE_POSSIBLE are always
zero and never do anything. Remove them.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/firmware.h | 8
1 file changed, 8 deletions(-)
diff --git a/arch/powerpc/include/asm/firmware.h
b/arch/powerpc/includ
PPC_NATIVE now only controls the native HPT code, so rename it to be
more descriptive. Restrict it to Book3S only.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/mm/book3s64/Makefile | 2 +-
arch/powerpc/mm/book3s64/hash_utils.c | 2 +-
arch/powerpc/platforms/52xx/Kconfig|
The pseries platform does not use the native hash code but the PAPR
virtualised hash interfaces, so remove PPC_HASH_MMU_NATIVE.
This requires moving tlbiel code from hash_native.c to hash_utils.c.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/book3s/64/tlbflush.h | 4 -
arch/pow
slb.c is hash-specific SLB management, but do_bad_slb_fault deals with
segment interrupts that occur with radix MMU as well.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/interrupt.h | 2 +-
arch/powerpc/kernel/exceptions-64s.S | 4 ++--
arch/powerpc/mm/book3s64/slb.c | 16
This reduces ifdefs in a later change which makes hash support configurable.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/platforms/pseries/lpar.c | 56 +--
1 file changed, 28 insertions(+), 28 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/lpar.c
b/arch/po
This avoids a change in behaviour in the later patch making hash
support configurable. This is possibly a user interface change, so
the alternative would be a hard-coded slb_size=0 here.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/platforms/pseries/lparcfg.c | 3 ++-
1 file changed, 2 insert
In preparation for making hash MMU support configurable, move THP
trace point function definitions out of an otherwise hash-specific
file.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/mm/book3s64/Makefile | 2 +-
arch/powerpc/mm/book3s64/hash_pgtable.c | 1 -
arch/powerpc/mm/book3s64/tr
The radix test can exclude slb_flush_all_realmode() from being called
because flush_and_reload_slb() is only expected to flush ERAT when
called by flush_erat(), which is only on pre-ISA v3.0 CPUs that do not
support radix.
This helps the later change to make hash support configurable to not
introd
The radix code uses some of the psize variables. Move the common
ones from hash_utils.c to pgtable.c.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/mm/book3s64/hash_utils.c | 5 -
arch/powerpc/mm/book3s64/pgtable.c| 7 +++
2 files changed, 7 insertions(+), 5 deletions(-)
diff --gi
This file contains functions and data common to radix, so rename it to
remove the hash_ prefix.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/mm/book3s64/Makefile | 2 +-
arch/powerpc/mm/book3s64/{hash_hugetlbpage.c => hugetlbpage.c} | 0
2 files changed, 1 inserti
Radix never sets mmu_linear_psize so it's always 4K, which causes pcpu
atom_size to always be PAGE_SIZE. 64e sets it to 1GB always.
Make paths for these platforms to be explicit about what value they set
atom_size to.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/kernel/setup_64.c | 21 ++
memremap_compat_align is only relevant when ZONE_DEVICE is selected.
ZONE_DEVICE depends on ARCH_HAS_PTE_DEVMAP, which is only selected
by PPC_BOOK3S_64.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/mm/book3s64/pgtable.c | 20
a
mmu_linear_psize is only set at boot once on 64e, is not necessarily
the correct size of the linear map pages, and is never used anywhere.
Remove it.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/nohash/mmu-book3e.h | 1 -
arch/powerpc/mm/nohash/tlb.c | 9 -
There are a few places that require MMU_FTR_HPTE_TABLE to be set even
when running in radix mode. Fix those up.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/mm/pgtable.c | 9 ++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pg
To avoid any functional changes to radix paths when building with hash
MMU support disabled (and CONFIG_PPC_MM_SLICES=n), always define the
arch get_unmapped_area calls on 64s platforms.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/book3s/64/hash.h | 4 ---
arch/powerpc/include/a
This adds Kconfig selection which allows 64s hash MMU support to be
disabled. It can be disabled if radix support is enabled, the minimum
supported CPU type is POWER9 (or higher), and KVM is not selected.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/Kconfig | 3 ++-
arch/
Compiling out hash support code when CONFIG_PPC_64S_HASH_MMU=n saves
128kB kernel image size (90kB text) on powernv_defconfig minus KVM,
350kB on pseries_defconfig minus KVM, 40kB on a tiny config.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/Kconfig | 2 +-
arch/pow
Microwatt implements a subset of ISA v3.0 (which is equivalent to
the POWER9_CPU option). It is radix-only, so does not require hash
MMU support.
This saves 20kB compressed dtbImage and 56kB vmlinux size.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/configs/microwatt_defconfig | 3 ++-
arch/
The LPAR name may be changed after the LPAR has been started in the HMC.
In that case lparstat command is not reporting the updated value because it
reads it from the device tree which is read at boot time.
However this value could be read from RTAS.
Adding this value in the /proc/powerpc/lparcfg
Laurent Dufour writes:
> The LPAR name may be changed after the LPAR has been started in the HMC.
> In that case lparstat command is not reporting the updated value because it
> reads it from the device tree which is read at boot time.
Could lparstat be changed to make the appropriate get-system-
On 01/12/2021, 16:30:29, Nathan Lynch wrote:
> Laurent Dufour writes:
>> The LPAR name may be changed after the LPAR has been started in the HMC.
>> In that case lparstat command is not reporting the updated value because it
>> reads it from the device tree which is read at boot time.
> Could lpar
The automatic "save & restore" of interrupt context is a POWER10/XIVE2
feature exploited by KVM under the PowerNV platform. It is not
available under pSeries and the associated toggle should not be
exposed under the XIVE debugfs directory.
Introduce a platform handler for debugfs initialization an
On 01/12/2021, 16:57:06, Laurent Dufour wrote:
> On 01/12/2021, 16:30:29, Nathan Lynch wrote:
>> Laurent Dufour writes:
>>> The LPAR name may be changed after the LPAR has been started in the HMC.
>>> In that case lparstat command is not reporting the updated value because it
>>> reads it from the
On Wed, Nov 24, 2021 at 11:08:25AM +1100, Michael Ellerman wrote:
> Kees Cook writes:
> > On Mon, Nov 22, 2021 at 04:43:36PM +1100, Michael Ellerman wrote:
> >> LEROY Christophe writes:
> >> > Le 18/11/2021 à 21:36, Kees Cook a écrit :
> >> >> In preparation for FORTIFY_SOURCE performing compile-
The LPAR name may be changed after the LPAR has been started in the HMC.
In that case lparstat command is not reporting the updated value because it
reads it from the device tree which is read at boot time.
However this value could be read from RTAS.
Adding this value in the /proc/powerpc/lparcfg
On Tue, Nov 23, 2021 at 10:32 AM Andy Shevchenko
wrote:
>
> On Tue, Nov 16, 2021 at 11:38:01AM +0200, Andy Shevchenko wrote:
> > On Mon, Nov 15, 2021 at 10:24:36PM +, Leo Li wrote:
> > > > From: Andy Shevchenko
> > > > Sent: Monday, November 15, 2021 5:30 AM
> > > > On Wed, Nov 10, 2021 at 12
randconfig-a013-20211128
i386 randconfig-a012-20211128
i386 randconfig-a014-20211128
i386 randconfig-a011-20211128
x86_64 randconfig-a006-20211201
x86_64 randconfig-a005-20211201
x86_64 randconfig-a001-20211201
On Mon, Nov 29, 2021 at 04:34:07PM +, Michał Mirosław wrote:
> Dnia 29 listopada 2021 06:38:39 UTC, Yury Norov
> napisał/a:
> >On Sun, Nov 28, 2021 at 07:03:41PM +0100, mirq-t...@rere.qmqm.pl wrote:
> >> On Sat, Nov 27, 2021 at 07:56:55PM -0800, Yury Norov wrote:
> >> > In many cases people u
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