> On 22-Jun-2021, at 4:27 PM, Nicholas Piggin wrote:
>
> KVM PMU management code looks for particular frozen/disabled bits in
> the PMU registers so it knows whether it must clear them when coming
> out of a guest or not. Setting this up helps KVM make these optimisations
> without getting con
> On 22-Jun-2021, at 4:27 PM, Nicholas Piggin wrote:
>
> Implement the P9 path PMU save/restore code in C, and remove the
> POWER9/10 code from the P7/8 path assembly.
>
> -449 cycles (8533) POWER9 virt-mode NULL hcall
>
> Signed-off-by: Nicholas Piggin
> ---
> arch/powerpc/include/asm/asm-
From: Benjamin Herrenschmidt
[ Upstream commit c93f80849bdd9b45d834053ae1336e28f0026c84 ]
This fixes the core devtree.c functions and the ns16550 UART backend.
Signed-off-by: Benjamin Herrenschmidt
Signed-off-by: Paul Mackerras
Reviewed-by: Segher Boessenkool
Acked-by: Nicholas Piggin
Signe
From: Athira Rajeev
[ Upstream commit 45677c9aebe926192e59475b35a1ff35ff2d4217 ]
The "no_handler_test" in ebb selftests attempts to read the PMU
registers twice via helper function "dump_ebb_state". First dump is
just before closing of event and the second invocation is done after
closing of the
From: Yang Yingliang
[ Upstream commit 80b9c1be567c3c6bbe0d4b290af578e630485b5d ]
If snd_pmac_tumbler_init() or snd_pmac_tumbler_post_init() fails,
snd_pmac_probe() need return error code.
Reported-by: Hulk Robot
Signed-off-by: Yang Yingliang
Link:
https://lore.kernel.org/r/20210616021121.19
From: Geoff Levand
[ Upstream commit 9733862e50fdba55e7f1554e4286fcc5302ff28e ]
Commit f959dcd6ddfd29235030e8026471ac1b022ad2b0 (dma-direct: Fix
potential NULL pointer dereference) added a null check on the
dma_mask pointer of the kernel's device structure.
Add a dma_mask variable to the ps3_dm
From: Benjamin Herrenschmidt
[ Upstream commit c93f80849bdd9b45d834053ae1336e28f0026c84 ]
This fixes the core devtree.c functions and the ns16550 UART backend.
Signed-off-by: Benjamin Herrenschmidt
Signed-off-by: Paul Mackerras
Reviewed-by: Segher Boessenkool
Acked-by: Nicholas Piggin
Signe
From: Athira Rajeev
[ Upstream commit 45677c9aebe926192e59475b35a1ff35ff2d4217 ]
The "no_handler_test" in ebb selftests attempts to read the PMU
registers twice via helper function "dump_ebb_state". First dump is
just before closing of event and the second invocation is done after
closing of the
From: Yang Yingliang
[ Upstream commit 80b9c1be567c3c6bbe0d4b290af578e630485b5d ]
If snd_pmac_tumbler_init() or snd_pmac_tumbler_post_init() fails,
snd_pmac_probe() need return error code.
Reported-by: Hulk Robot
Signed-off-by: Yang Yingliang
Link:
https://lore.kernel.org/r/20210616021121.19
From: Geoff Levand
[ Upstream commit 9733862e50fdba55e7f1554e4286fcc5302ff28e ]
Commit f959dcd6ddfd29235030e8026471ac1b022ad2b0 (dma-direct: Fix
potential NULL pointer dereference) added a null check on the
dma_mask pointer of the kernel's device structure.
Add a dma_mask variable to the ps3_dm
From: Benjamin Herrenschmidt
[ Upstream commit c93f80849bdd9b45d834053ae1336e28f0026c84 ]
This fixes the core devtree.c functions and the ns16550 UART backend.
Signed-off-by: Benjamin Herrenschmidt
Signed-off-by: Paul Mackerras
Reviewed-by: Segher Boessenkool
Acked-by: Nicholas Piggin
Signe
From: Athira Rajeev
[ Upstream commit 45677c9aebe926192e59475b35a1ff35ff2d4217 ]
The "no_handler_test" in ebb selftests attempts to read the PMU
registers twice via helper function "dump_ebb_state". First dump is
just before closing of event and the second invocation is done after
closing of the
From: Yang Yingliang
[ Upstream commit 80b9c1be567c3c6bbe0d4b290af578e630485b5d ]
If snd_pmac_tumbler_init() or snd_pmac_tumbler_post_init() fails,
snd_pmac_probe() need return error code.
Reported-by: Hulk Robot
Signed-off-by: Yang Yingliang
Link:
https://lore.kernel.org/r/20210616021121.19
From: Geoff Levand
[ Upstream commit 9733862e50fdba55e7f1554e4286fcc5302ff28e ]
Commit f959dcd6ddfd29235030e8026471ac1b022ad2b0 (dma-direct: Fix
potential NULL pointer dereference) added a null check on the
dma_mask pointer of the kernel's device structure.
Add a dma_mask variable to the ps3_dm
From: Benjamin Herrenschmidt
[ Upstream commit c93f80849bdd9b45d834053ae1336e28f0026c84 ]
This fixes the core devtree.c functions and the ns16550 UART backend.
Signed-off-by: Benjamin Herrenschmidt
Signed-off-by: Paul Mackerras
Reviewed-by: Segher Boessenkool
Acked-by: Nicholas Piggin
Signe
From: Athira Rajeev
[ Upstream commit 45677c9aebe926192e59475b35a1ff35ff2d4217 ]
The "no_handler_test" in ebb selftests attempts to read the PMU
registers twice via helper function "dump_ebb_state". First dump is
just before closing of event and the second invocation is done after
closing of the
From: Yang Yingliang
[ Upstream commit 80b9c1be567c3c6bbe0d4b290af578e630485b5d ]
If snd_pmac_tumbler_init() or snd_pmac_tumbler_post_init() fails,
snd_pmac_probe() need return error code.
Reported-by: Hulk Robot
Signed-off-by: Yang Yingliang
Link:
https://lore.kernel.org/r/20210616021121.19
From: Geoff Levand
[ Upstream commit 9733862e50fdba55e7f1554e4286fcc5302ff28e ]
Commit f959dcd6ddfd29235030e8026471ac1b022ad2b0 (dma-direct: Fix
potential NULL pointer dereference) added a null check on the
dma_mask pointer of the kernel's device structure.
Add a dma_mask variable to the ps3_dm
From: Benjamin Herrenschmidt
[ Upstream commit c93f80849bdd9b45d834053ae1336e28f0026c84 ]
This fixes the core devtree.c functions and the ns16550 UART backend.
Signed-off-by: Benjamin Herrenschmidt
Signed-off-by: Paul Mackerras
Reviewed-by: Segher Boessenkool
Acked-by: Nicholas Piggin
Signe
From: Athira Rajeev
[ Upstream commit 45677c9aebe926192e59475b35a1ff35ff2d4217 ]
The "no_handler_test" in ebb selftests attempts to read the PMU
registers twice via helper function "dump_ebb_state". First dump is
just before closing of event and the second invocation is done after
closing of the
From: Yang Yingliang
[ Upstream commit 80b9c1be567c3c6bbe0d4b290af578e630485b5d ]
If snd_pmac_tumbler_init() or snd_pmac_tumbler_post_init() fails,
snd_pmac_probe() need return error code.
Reported-by: Hulk Robot
Signed-off-by: Yang Yingliang
Link:
https://lore.kernel.org/r/20210616021121.19
From: Geoff Levand
[ Upstream commit 9733862e50fdba55e7f1554e4286fcc5302ff28e ]
Commit f959dcd6ddfd29235030e8026471ac1b022ad2b0 (dma-direct: Fix
potential NULL pointer dereference) added a null check on the
dma_mask pointer of the kernel's device structure.
Add a dma_mask variable to the ps3_dm
From: Benjamin Herrenschmidt
[ Upstream commit c93f80849bdd9b45d834053ae1336e28f0026c84 ]
This fixes the core devtree.c functions and the ns16550 UART backend.
Signed-off-by: Benjamin Herrenschmidt
Signed-off-by: Paul Mackerras
Reviewed-by: Segher Boessenkool
Acked-by: Nicholas Piggin
Signe
From: "Aneesh Kumar K.V"
[ Upstream commit 07d8ad6fd8a3d47f50595ca4826f41dbf4f3a0c6 ]
Update _tlbiel_pid() such that we can avoid build errors like below when
using this function in other places.
arch/powerpc/mm/book3s64/radix_tlb.c: In function
‘__radix__flush_tlb_range_psize’:
arch/powerpc/m
From: Athira Rajeev
[ Upstream commit 45677c9aebe926192e59475b35a1ff35ff2d4217 ]
The "no_handler_test" in ebb selftests attempts to read the PMU
registers twice via helper function "dump_ebb_state". First dump is
just before closing of event and the second invocation is done after
closing of the
From: Yang Yingliang
[ Upstream commit 80b9c1be567c3c6bbe0d4b290af578e630485b5d ]
If snd_pmac_tumbler_init() or snd_pmac_tumbler_post_init() fails,
snd_pmac_probe() need return error code.
Reported-by: Hulk Robot
Signed-off-by: Yang Yingliang
Link:
https://lore.kernel.org/r/20210616021121.19
From: Geoff Levand
[ Upstream commit 9733862e50fdba55e7f1554e4286fcc5302ff28e ]
Commit f959dcd6ddfd29235030e8026471ac1b022ad2b0 (dma-direct: Fix
potential NULL pointer dereference) added a null check on the
dma_mask pointer of the kernel's device structure.
Add a dma_mask variable to the ps3_dm
lmodconfig
powerpc allnoconfig
x86_64 randconfig-a004-20210709
x86_64 randconfig-a005-20210709
x86_64 randconfig-a002-20210709
x86_64 randconfig-a006-20210709
x86_64 randconfig-a003-20210
From: Yang Yingliang
[ Upstream commit a2f6ed4a44721d3a9fdf4da7e0743cb13866bf61 ]
It will cause null-ptr-deref if platform_get_resource_byname() returns NULL,
we need check the return value.
Signed-off-by: Yang Yingliang
Link:
https://lore.kernel.org/r/20210615013922.784296-10-yangyingli...@h
From: Benjamin Herrenschmidt
[ Upstream commit c93f80849bdd9b45d834053ae1336e28f0026c84 ]
This fixes the core devtree.c functions and the ns16550 UART backend.
Signed-off-by: Benjamin Herrenschmidt
Signed-off-by: Paul Mackerras
Reviewed-by: Segher Boessenkool
Acked-by: Nicholas Piggin
Signe
From: "Aneesh Kumar K.V"
[ Upstream commit 07d8ad6fd8a3d47f50595ca4826f41dbf4f3a0c6 ]
Update _tlbiel_pid() such that we can avoid build errors like below when
using this function in other places.
arch/powerpc/mm/book3s64/radix_tlb.c: In function
‘__radix__flush_tlb_range_psize’:
arch/powerpc/m
From: Athira Rajeev
[ Upstream commit 45677c9aebe926192e59475b35a1ff35ff2d4217 ]
The "no_handler_test" in ebb selftests attempts to read the PMU
registers twice via helper function "dump_ebb_state". First dump is
just before closing of event and the second invocation is done after
closing of the
From: Yang Yingliang
[ Upstream commit 80b9c1be567c3c6bbe0d4b290af578e630485b5d ]
If snd_pmac_tumbler_init() or snd_pmac_tumbler_post_init() fails,
snd_pmac_probe() need return error code.
Reported-by: Hulk Robot
Signed-off-by: Yang Yingliang
Link:
https://lore.kernel.org/r/20210616021121.19
From: Geoff Levand
[ Upstream commit 9733862e50fdba55e7f1554e4286fcc5302ff28e ]
Commit f959dcd6ddfd29235030e8026471ac1b022ad2b0 (dma-direct: Fix
potential NULL pointer dereference) added a null check on the
dma_mask pointer of the kernel's device structure.
Add a dma_mask variable to the ps3_dm
From: Yang Yingliang
[ Upstream commit 80b9c1be567c3c6bbe0d4b290af578e630485b5d ]
If snd_pmac_tumbler_init() or snd_pmac_tumbler_post_init() fails,
snd_pmac_probe() need return error code.
Reported-by: Hulk Robot
Signed-off-by: Yang Yingliang
Link:
https://lore.kernel.org/r/20210616021121.19
From: Christophe Leroy
[ Upstream commit b3a9e523237013477bea914b7fbfbe420428b988 ]
get_user_instr() lacks sparse detection for the __user tag.
This is because __gui_ptr is assigned with a cast.
Fix that by adding a __chk_user_ptr()
Signed-off-by: Christophe Leroy
Signed-off-by: Michael Elle
From: Geoff Levand
[ Upstream commit 9733862e50fdba55e7f1554e4286fcc5302ff28e ]
Commit f959dcd6ddfd29235030e8026471ac1b022ad2b0 (dma-direct: Fix
potential NULL pointer dereference) added a null check on the
dma_mask pointer of the kernel's device structure.
Add a dma_mask variable to the ps3_dm
On Mon, 2021-01-11 at 03:28 -0500, Paul Gortmaker wrote:
> In v2.6.27 (2008, 917f0af9e5a9) the sbc8260 support was implicitly
> retired by not being carried forward through the ppc --> powerpc
> device tree transition.
>
> Then, in v3.6 (2012, b048b4e17cbb) we retired the support for the
> sbc8560
The pull request you sent on Fri, 09 Jul 2021 23:45:27 +1000:
> https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
> tags/powerpc-5.14-2
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/1459718d7d79013a4814275c466e0b32da6a26bc
Thank you!
--
Deet-doot-d
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
Hi Linus,
Please pull powerpc fixes for 5.14:
The following changes since commit 019b3fd94ba73d3ac615f0537440b81f129821f6:
Merge tag 'powerpc-5.14-1' of
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux (2021-07-02
12:54:34 -0700)
a
Calling 'mfsr' to get the content of segment registers is heavy,
in addition it requires clearing of the 'reserved' bits.
In order to avoid this operation, save it in mm context and in
thread struct.
The saved sr0 is the one used by kernel, this means that on
interrupt/syscall entry it can be use
When interrupt and syscall entries where converted to C, KUEP locking
and unlocking was also converted. It improved performance by unrolling
the loop, and allowed easily implementing boot time deactivation of
KUEP.
However, null_syscall selftest shows that KUEP is still heavy
(361 cycles with KUEP
[[PATCH 0/3] Retire remaining WindRiver embedded SBC BSPs] On 11/01/2021 (Mon
03:28) Paul Gortmaker wrote:
> In v2.6.27 (2008, 917f0af9e5a9) the sbc8260 support was implicitly
> retired by not being carried forward through the ppc --> powerpc
> device tree transition.
>
> Then, in v3.6 (2012, b0
Hi Christophe,
I love your patch! Yet something to improve:
[auto build test ERROR on powerpc/next]
[also build test ERROR on next-20210709]
[cannot apply to v5.13]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--bas
The performance reporting driver added cpu hotplug
feature but it didn't add pmu migration call in cpu
offline function.
This can create an issue incase the current designated
cpu being used to collect fme pmu data got offline,
as based on current code we are not migrating fme pmu to
new target cpu
Calling 'mfsr' to get the content of segment registers is heavy,
in addition it requires clearing of the 'reserved' bits.
In order to avoid this operation, save it in mm context and in
thread struct.
The saved sr0 is the one used by kernel, this means that on
interrupt/syscall entry it can be use
When interrupt and syscall entries where converted to C, KUEP locking
and unlocking was also converted. It improved performance by unrolling
the loop, and allowed easily implementing boot time deactivation of
KUEP.
However, null_syscall selftest shows that KUEP is still heavy
(361 cycles with KUEP
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