o use walk_page_range")
Signed-off-by: Steven Price
---
arch/x86/mm/dump_pagetables.c | 31 +++
include/linux/ptdump.h| 1 +
mm/ptdump.c | 17 -
3 files changed, 36 insertions(+), 13 deletions(-)
diff --git a/a
to ensure that it is always big enough.
Reported-by: Jan Beulich
Signed-off-by: Steven Price
---
arch/arm64/mm/dump.c | 2 +-
arch/x86/mm/dump_pagetables.c | 2 +-
include/linux/ptdump.h| 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/mm/dump.c b/arch/arm64
[1] https://lore.kernel.org/lkml/d573dc7e-e742-84de-473d-f971142fa...@suse.com/
[2] 2ae27137b2db ("x86: mm: convert dump_pagetables to use walk_page_range")
Steven Price (2):
x86: mm: ptdump: Calculate effective permissions correctly
mm: ptdump: Expand type of 'val' in note_page()
On 20/05/2020 12:05, Dinghao Liu wrote:
pm_runtime_get_sync() increments the runtime PM usage counter even
the call returns an error code. Thus a pairing decrement is needed
on the error handling path to keep the counter balanced.
Signed-off-by: Dinghao Liu
Actually I think we have the
On 14/05/2020 09:21, Etienne Carriere wrote:
Define identifier value reported by secure firmware when its
supports Arm SMCCC specification v1.2.
Signed-off-by: Etienne Carriere
FYI Sudeep has already posted a patch to do this[1].
Steve
[1]
On 12/05/2020 10:39, Jan Beulich wrote:
Steven,
Hi Jan,
in the description of this change you say:
"The effective permissions are passed down the chain using new fields in
struct pg_state."
I don't see how this works, and I suppose this part of the change is
(part of) the reason why a
on dma-mapping wrappers operating
directly on the struct sg_table objects and adjust references to the
nents and orig_nents respectively.
Signed-off-by: Marek Szyprowski
The change looks good to me:
Reviewed-by: Steven Price
Although I would have appreciated the commit message being modified to
On 02/05/2020 23:07, Clément Péron wrote:
Hi Steven,
On Tue, 14 Apr 2020 at 15:10, Steven Price wrote:
Hi Clément,
On 13/04/2020 18:28, Clément Péron wrote:
Hi Steven,
Getting a backtrace from the two occurrences, I see one added from:
(debugfs_create_dir) from
there is a good reason for this patch... ;)
Reviewed-by: Steven Price
Steve
Signed-off-by: Sudeep Holla
---
drivers/firmware/psci/psci.c | 5 +
include/linux/arm-smccc.h| 9 +
2 files changed, 14 insertions(+)
diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci
custom sysfs for
the vendor ID as JEP-106 bank and identification code.
Signed-off-by: Sudeep Holla
Some minor things below, but with those fixed:
Reviewed-by: Steven Price
---
drivers/firmware/psci/Kconfig | 9 ++
drivers/firmware/psci/Makefile | 1 +
drivers/firmware/psci/soc_id.c
ing:
Fixes: f3ba91228e8e ("drm/panfrost: Add initial panfrost driver")
Even better would be the wrappers you mention in the cover letter! ;)
Reviewed-by: Steven Price
Signed-off-by: Marek Szyprowski
---
For more information, see '[PATCH v2 00/21] DRM: fix struct sg_table nents
vs. orig
On 30/04/2020 12:48, Sudeep Holla wrote:
SMCCC v1.2 adds a new optional function SMCCC_ARCH_SOC_ID to obtain a
SiP defined SoC identification value. Add support for the same.
Also using the SoC bus infrastructure, let us expose the platform
specific SoC atrributes under sysfs. We also provide
On 30/04/2020 12:48, Sudeep Holla wrote:
Instead of maintaining 2 sets of enums/macros for tracking SMCCC version,
let us drop smccc_version enum and use ARM_SMCCC_VERSION_1_x directly
instead.
Signed-off-by: Sudeep Holla
Reviewed-by: Steven Price
---
arch/arm64/kernel/paravirt.c | 2
. Currently it points to v1.2 published in
s/stal/stale/
otherwise:
Reviewed-by: Steven Price
March 2020.
Signed-off-by: Sudeep Holla
---
include/linux/arm-smccc.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h
index
On 30/04/2020 12:48, Sudeep Holla wrote:
Add the definition for SMCCC v1.2 version and new error code added.
While at it, also add a note that ARM DEN 0070A is deprecated and is
now merged into the main SMCCC specification(ARM DEN 0028C).
Signed-off-by: Sudeep Holla
Reviewed-by: Steven Price
On 23/10/2019 13:39, Marc Zyngier wrote:
> Hi Steven,
>
> On 2019-10-21 16:28, Steven Price wrote:
>> This series add support for paravirtualized time for arm64 guests and
>> KVM hosts following the specification in Arm's document DEN 0057A:
>>
>> https
Rather than directly choosing which function to use based on
psci_ops.conduit, use the new arm_smccc_1_1 wrapper instead.
In some cases we still need to do some operations based on the
conduit, but the code duplication is removed.
No functional change.
Signed-off-by: Steven Price
---
arch/arm
up Documentation/{virt->virtual} change
* Bunch of typo fixes
Christoffer Dall (1):
KVM: arm/arm64: Factor out hypercall handling from PSCI code
Steven Price (9):
KVM: arm64: Document PV-time interface
KVM: arm64: Implement PV_TIME_FEATURES call
KVM: Implement kvm_put_guest()
KVM: arm64: S
On 18/10/2019 18:10, Mark Rutland wrote:
> On Tue, Oct 15, 2019 at 06:56:51PM +0100, Mark Rutland wrote:
[...]
>>> +PV_TIME_ST
>>> += ==
>>> +Function ID: (uint32)0xC521
>>> +Return value: (int64) IPA of the stolen time data structure for
e panfrost_perfcnt.c, include head file can fix this.
Nit: s/head/header/
>
> Signed-off-by: Yi Wang
Looks good, just a few minor style issues (below), with those fixed:
Reviewed-by: Steven Price
> ---
> drivers/gpu/drm/panfrost/panfrost_mmu.c | 5 +++--
> drivers
On 19/10/2019 21:28, Marc Zyngier wrote:
> On Fri, 11 Oct 2019 13:59:30 +0100,
> Steven Price wrote:
>>
>> Enable paravirtualization features when running under a hypervisor
>> supporting the PV_TIME_ST hypercall.
>>
>> For each (v)CPU, we ask the hypervisor
On 18/10/2019 16:57, Christoph Hellwig wrote:
>> +return pud_present(pud)
>> +&& (pud_val(pud) & (_PAGE_READ | _PAGE_WRITE | _PAGE_EXEC));
>> +}
>
> The operators always need to go before the line break, not after it
> per linux coding style. There are a few more spots like this,
-by: Steven Price
---
arch/x86/mm/dump_pagetables.c | 69 ++-
1 file changed, 35 insertions(+), 34 deletions(-)
diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index ab67822fd2f4..4dc6f4df40af 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch
not defined we
can be confident that there are no leaf pages in existence and fall back
on the generic implementation (added in a later patch) which returns 0.
CC: Ralf Baechle
CC: Paul Burton
CC: James Hogan
CC: linux-m...@vger.kernel.org
Signed-off-by: Steven Price
Acked-by: Paul Burton
It is useful to be able to skip parts of the page table tree even when
walking without VMAs. Add test_p?d callbacks similar to test_walk but
which are called just before a table at that level is walked. If the
callback returns non-zero then the entire table is skipped.
Signed-off-by: Steven Price
or execute bit
set on it.
CC: Palmer Dabbelt
CC: Albert Ou
CC: linux-ri...@lists.infradead.org
Reviewed-by: Alexandre Ghiti
Acked-by: Paul Walmsley # for arch/riscv
Signed-off-by: Steven Price
---
arch/riscv/include/asm/pgtable-64.h | 7 +++
arch/riscv/include/asm/pgtable.h| 7
ll entries, not
just transparent huge pages.
Signed-off-by: Steven Price
---
include/linux/pagewalk.h | 19 +--
mm/pagewalk.c| 27 ---
2 files changed, 29 insertions(+), 17 deletions(-)
diff --git a/include/linux/pagewalk.h b/include/li
page tables. This fake_mm structure is
initialised with the minimum necessary for the generic page walk code.
Signed-off-by: Steven Price
---
arch/x86/mm/dump_pagetables.c | 36 ---
1 file changed, 21 insertions(+), 15 deletions(-)
diff --git a/arch/x86/mm
Add a generic version of page table dumping that architectures can
opt-in to
Signed-off-by: Steven Price
---
include/linux/ptdump.h | 21 ++
mm/Kconfig.debug | 21 ++
mm/Makefile| 1 +
mm/ptdump.c| 150 +
4 files
provided, so
add macros to provide the p?d_leaf names required by the generic code.
CC: "David S. Miller"
CC: sparcli...@vger.kernel.org
Signed-off-by: Steven Price
---
arch/sparc/include/asm/pgtable_64.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/sparc/include/asm/pg
Now walk_page_range() can walk kernel page tables, we can switch the
arm64 ptdump code over to using it, simplifying the code.
Signed-off-by: Steven Price
---
arch/arm64/Kconfig | 1 +
arch/arm64/Kconfig.debug | 19 +
arch/arm64/include/asm/ptdump.h| 8
callbacks
which can decide to skip an entire tree of entries
Signed-off-by: Steven Price
---
arch/x86/Kconfig | 1 +
arch/x86/Kconfig.debug| 20 +--
arch/x86/mm/Makefile | 4 +-
arch/x86/mm/dump_pagetables.c | 289 +++---
4 files changed, 66
that is reported is the actual level where the entry is
missing (ignoring any folding that is in place), i.e. any levels where
PTRS_PER_P?D is set to 1 are ignored.
Note that depth starts at 0 for a PGD so that PUD/PMD/PTE retain their
natural numbers as levels 2/3/4.
Signed-off-by: Steven Price
---
fs
r.
Remove the requirement to have a vma except when trying to split huge
pages.
Signed-off-by: Steven Price
---
mm/pagewalk.c | 25 +
1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index fc4d98a3a5a0..4139e9163aee 10064
To enable x86 to use the generic walk_page_range() function, the
callers of ptdump_walk_pgd_level_debugfs() need to pass in the mm_struct.
This means that ptdump_walk_pgd_level_core() is now always passed a
valid pgd, so drop the support for pgd==NULL.
Signed-off-by: Steven Price
---
arch/x86
.
Signed-off-by: Steven Price
---
arch/arm64/mm/dump.c | 25 +
1 file changed, 13 insertions(+), 12 deletions(-)
diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c
index 9d9b740a86d2..3203dd8e6d0a 100644
--- a/arch/arm64/mm/dump.c
+++ b/arch/arm64/mm/dump.c
@@ -269,21
add macros to
provide the generic p?d_leaf() names for the generic code.
Signed-off-by: Steven Price
---
arch/x86/include/asm/pgtable.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 0bc530c4eb13..6986a451619e 100644
. So simply
provide the generic pmd_leaf() name.
CC: Russell King
CC: linux-arm-ker...@lists.infradead.org
Signed-off-by: Steven Price
---
arch/arm/include/asm/pgtable-2level.h | 1 +
arch/arm/include/asm/pgtable-3level.h | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/arm/include/asm
() is needed.
CC: Vineet Gupta
CC: linux-snps-...@lists.infradead.org
Acked-by: Vineet Gupta
Signed-off-by: Steven Price
---
arch/arc/include/asm/pgtable.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index 7addd0301c51
/x86 to that instead.
* Rebased to v5.3-rc1
Steven Price (22):
mm: Add generic p?d_leaf() macros
arc: mm: Add p?d_leaf() definitions
arm: mm: Add p?d_leaf() definitions
arm64: mm: Add p?d_leaf() definitions
mips: mm: Add p?d_leaf() definitions
powerpc: mm: Add p?d_leaf() definitions
ris
the entry is a leaf (for example it may be a set of contiguous entries
that only take 1 TLB slot). For the purpose of walking the page tables
we don't need to know how it will be represented in the TLB, but we do
need to know for sure if it is a leaf of the tree.
Signed-off-by: Steven Price
Ac
-by: Steven Price
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 30 ++--
1 file changed, 21 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h
b/arch/powerpc/include/asm/book3s/64/pgtable.h
index b01624e5c467..3dd7b6f5edd0 100644
--- a/arch
Signed-off-by: Steven Price
---
arch/x86/include/asm/pgtable.h | 2 +-
arch/x86/mm/dump_pagetables.c | 4 ++--
arch/x86/platform/efi/efi_32.c | 2 +-
arch/x86/platform/efi/efi_64.c | 4 ++--
4 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/i
ing macros
is implicitly relying on the page size/number of levels being the same as
the kernel. So it is safe to reuse this for p?d_leaf() as it is an
architectural restriction.
CC: Catalin Marinas
CC: Will Deacon
Signed-off-by: Steven Price
---
arch/arm64/include/asm/pgtable.h | 2 ++
1 f
implemented as static
inline functions. Add a macro to provide the p?d_leaf names for the
generic code to use.
CC: Heiko Carstens
CC: Vasily Gorbik
CC: Christian Borntraeger
CC: linux-s...@vger.kernel.org
Signed-off-by: Steven Price
---
arch/s390/include/asm/pgtable.h | 2 ++
1 file changed, 2
On 15/10/2019 18:56, Mark Rutland wrote:
> Hi Steven,
>
> On Fri, Oct 11, 2019 at 01:59:21PM +0100, Steven Price wrote:
>> Introduce a paravirtualization interface for KVM/arm64 based on the
>> "Arm Paravirtualized Time for Arm-Base Systems" specifi
On 07/10/2019 19:11, Jason Gunthorpe wrote:
> On Mon, Oct 07, 2019 at 05:20:30PM +0100, Steven Price wrote:
>> On 07/10/2019 17:10, Jason Gunthorpe wrote:
>>> On Mon, Oct 07, 2019 at 04:38:14PM +0100, Steven Price wrote:
>>>> diff --git a/mm/hmm.c b/mm/hmm.c
>>
On 08/10/2019 22:33, Paul Walmsley wrote:
> On Mon, 7 Oct 2019, Steven Price wrote:
>
>> walk_page_range() is going to be allowed to walk page tables other than
>> those of user space. For this it needs to know when it has reached a
>> 'leaf' entry in the page tables. This
On 07/10/2019 17:10, Jason Gunthorpe wrote:
> On Mon, Oct 07, 2019 at 04:38:14PM +0100, Steven Price wrote:
>> diff --git a/mm/hmm.c b/mm/hmm.c
>> index 902f5fa6bf93..34fe904dd417 100644
>> +++ b/mm/hmm.c
>> @@ -376,7 +376,7 @@ static void hmm_range_need_fault(co
-by: Steven Price
---
arch/x86/mm/dump_pagetables.c | 69 ++-
1 file changed, 35 insertions(+), 34 deletions(-)
diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index ab67822fd2f4..4dc6f4df40af 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch
that is reported is the actual level where the entry is
missing (ignoring any folding that is in place), i.e. any levels where
PTRS_PER_P?D is set to 1 are ignored.
Note that depth starts at 0 for a PGD so that PUD/PMD/PTE retain their
natural numbers as levels 2/3/4.
Signed-off-by: Steven Price
---
fs
To enable x86 to use the generic walk_page_range() function, the
callers of ptdump_walk_pgd_level_debugfs() need to pass in the mm_struct.
This means that ptdump_walk_pgd_level_core() is now always passed a
valid pgd, so drop the support for pgd==NULL.
Signed-off-by: Steven Price
---
arch/x86
page tables. This fake_mm structure is
initialised with the minimum necessary for the generic page walk code.
Signed-off-by: Steven Price
---
arch/x86/mm/dump_pagetables.c | 36 ---
1 file changed, 21 insertions(+), 15 deletions(-)
diff --git a/arch/x86/mm
Add a generic version of page table dumping that architectures can
opt-in to
Signed-off-by: Steven Price
---
include/linux/ptdump.h | 21 ++
mm/Kconfig.debug | 21 ++
mm/Makefile| 1 +
mm/ptdump.c| 150 +
4 files
.
Signed-off-by: Steven Price
---
arch/arm64/mm/dump.c | 25 +
1 file changed, 13 insertions(+), 12 deletions(-)
diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c
index 9d9b740a86d2..3203dd8e6d0a 100644
--- a/arch/arm64/mm/dump.c
+++ b/arch/arm64/mm/dump.c
@@ -269,21
Now walk_page_range() can walk kernel page tables, we can switch the
arm64 ptdump code over to using it, simplifying the code.
Signed-off-by: Steven Price
---
arch/arm64/Kconfig | 1 +
arch/arm64/Kconfig.debug | 19 +
arch/arm64/include/asm/ptdump.h| 8
callbacks
which can decide to skip an entire tree of entries
Signed-off-by: Steven Price
---
arch/x86/Kconfig | 1 +
arch/x86/Kconfig.debug| 20 +--
arch/x86/mm/Makefile | 4 +-
arch/x86/mm/dump_pagetables.c | 289 +++---
4 files changed, 66
add macros to
provide the generic p?d_leaf() names for the generic code.
Signed-off-by: Steven Price
---
arch/x86/include/asm/pgtable.h | 5 +
1 file changed, 5 insertions(+)
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 0bc530c4eb13..6986a451619e 100644
It is useful to be able to skip parts of the page table tree even when
walking without VMAs. Add test_p?d callbacks similar to test_walk but
which are called just before a table at that level is walked. If the
callback returns non-zero then the entire table is skipped.
Signed-off-by: Steven Price
Signed-off-by: Steven Price
---
arch/x86/include/asm/pgtable.h | 2 +-
arch/x86/mm/dump_pagetables.c | 4 ++--
arch/x86/platform/efi/efi_32.c | 2 +-
arch/x86/platform/efi/efi_64.c | 4 ++--
4 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/i
r.
Remove the requirement to have a vma except when trying to split huge
pages.
Signed-off-by: Steven Price
---
mm/pagewalk.c | 25 +
1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index fc4d98a3a5a0..4139e9163aee 10064
ll entries, not
just transparent huge pages.
Signed-off-by: Steven Price
---
include/linux/pagewalk.h | 19 +--
mm/pagewalk.c| 27 ---
2 files changed, 29 insertions(+), 17 deletions(-)
diff --git a/include/linux/pagewalk.h b/include/li
provided, so
add macros to provide the p?d_leaf names required by the generic code.
CC: "David S. Miller"
CC: sparcli...@vger.kernel.org
Signed-off-by: Steven Price
---
arch/sparc/include/asm/pgtable_64.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/sparc/include/asm/pg
or execute bit
set on it.
CC: Palmer Dabbelt
CC: Albert Ou
CC: linux-ri...@lists.infradead.org
Signed-off-by: Steven Price
---
arch/riscv/include/asm/pgtable-64.h | 7 +++
arch/riscv/include/asm/pgtable.h| 7 +++
2 files changed, 14 insertions(+)
diff --git a/arch/riscv/include/asm
implemented as static
inline functions. Add a macro to provide the p?d_leaf names for the
generic code to use.
CC: Heiko Carstens
CC: Vasily Gorbik
CC: Christian Borntraeger
CC: linux-s...@vger.kernel.org
Signed-off-by: Steven Price
---
arch/s390/include/asm/pgtable.h | 2 ++
1 file changed, 2
the entry is a leaf (for example it may be a set of contiguous entries
that only take 1 TLB slot). For the purpose of walking the page tables
we don't need to know how it will be represented in the TLB, but we do
need to know for sure if it is a leaf of the tree.
Signed-off-by: Steven Price
Ac
-by: Steven Price
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 30 ++--
1 file changed, 21 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h
b/arch/powerpc/include/asm/book3s/64/pgtable.h
index b01624e5c467..3dd7b6f5edd0 100644
--- a/arch
. So simply
provide the generic pmd_leaf() name.
CC: Russell King
CC: linux-arm-ker...@lists.infradead.org
Signed-off-by: Steven Price
---
arch/arm/include/asm/pgtable-2level.h | 1 +
arch/arm/include/asm/pgtable-3level.h | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/arm/include/asm
ing macros
is implicitly relying on the page size/number of levels being the same as
the kernel. So it is safe to reuse this for p?d_leaf() as it is an
architectural restriction.
CC: Catalin Marinas
CC: Will Deacon
Signed-off-by: Steven Price
---
arch/arm64/include/asm/pgtable.h | 2 ++
1 f
not defined we
can be confident that there are no leaf pages in existence and fall back
on the generic implementation (added in a later patch) which returns 0.
CC: Ralf Baechle
CC: Paul Burton
CC: James Hogan
CC: linux-m...@vger.kernel.org
Signed-off-by: Steven Price
Acked-by: Paul Burton
() is needed.
CC: Vineet Gupta
CC: linux-snps-...@lists.infradead.org
Signed-off-by: Steven Price
---
arch/arc/include/asm/pgtable.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index 7addd0301c51..5ec798e50836 100644
--- a/arch
migrating arm64/x86 to that instead.
* Rebased to v5.3-rc1
Steven Price (22):
mm: Add generic p?d_leaf() macros
arc: mm: Add p?d_leaf() definitions
arm: mm: Add p?d_leaf() definitions
arm64: mm: Add p?d_leaf() definitions
mips: mm: Add p?d_leaf() definitions
powerpc: mm: Ad
On 04/10/2019 17:33, Koenig, Christian wrote:
>
>
> Am 04.10.2019 18:02 schrieb Steven Price :
> On 04/10/2019 16:34, Koenig, Christian wrote:
>> Am 04.10.19 um 17:27 schrieb Steven Price:
>>> On 04/10/2019 16:03, Neil Armstrong wrote:
>>>> On 04/
On 04/10/2019 11:48, Anshuman Khandual wrote:
>
>
> On 10/04/2019 03:49 PM, Steven Price wrote:
>> On 04/10/2019 05:23, Anshuman Khandual wrote:
>>> Platform implementation for free_initmem() should poison the memory while
>>> freeing it up. Hence pass across
logic seems to apply. However this change
looks fine to me.
Reviewed-by: Steven Price
> ---
> arch/arm64/mm/init.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
> index 45c00a54909c..ea7d38011e83 100644
> ---
On 03/10/2019 13:19, Andrew Jones wrote:
> On Wed, Oct 02, 2019 at 03:50:28PM +0100, Steven Price wrote:
>> Introduce a paravirtualization interface for KVM/arm64 based on the
>> "Arm Paravirtualized Time for Arm-Base Systems" specification DEN 0057A.
>>
>> Thi
kvm_put_guest() is analogous to put_user() - it writes a single value to
the guest physical address. The implementation is built upon put_user()
and so it has the same single copy atomic properties.
Signed-off-by: Steven Price
---
include/linux/kvm_host.h | 22 ++
1 file
this functionality into a separate hypercall handler file.
Signed-off-by: Christoffer Dall
[steven.pr...@arm.com: rebased]
Signed-off-by: Steven Price
---
arch/arm/kvm/Makefile| 2 +-
arch/arm/kvm/handle_exit.c | 2 +-
arch/arm64/kvm/Makefile | 1 +
arch/arm64/kvm/handle_exit.c | 4
structure
maintained by the Linux scheduler code. We enable SCHEDSTATS when
selecting KVM Kconfig to ensure this value is meaningful.
Signed-off-by: Steven Price
---
arch/arm/include/asm/kvm_host.h | 20 +++
arch/arm64/include/asm/kvm_host.h | 21 +++-
arch/arm64/kvm/Kconfig
the conduit used for the call.
This allow us to remove some duplicated code and will be useful later
when adding paravirtualized time hypervisor calls.
Signed-off-by: Steven Price
Acked-by: Will Deacon
---
include/linux/arm-smccc.h | 44 +++
1 file changed, 44
Rather than directly choosing which function to use based on
psci_ops.conduit, use the new arm_smccc_1_1 wrapper instead.
In some cases we still need to do some operations based on the
conduit, but the code duplication is removed.
No functional change.
Signed-off-by: Steven Price
---
arch/arm
ndling from PSCI code
Steven Price (9):
KVM: arm64: Document PV-time interface
KVM: arm64: Implement PV_FEATURES call
KVM: Implement kvm_put_guest()
KVM: arm64: Support stolen time reporting via shared structure
KVM: Allow kvm_device_ops to be const
KVM: arm64: Provide VCPU attributes for
On 26/09/2019 08:07, Koenig, Christian wrote:
> Am 25.09.19 um 17:14 schrieb Steven Price:
>> drm_sched_cleanup_jobs() attempts to free finished jobs, however because
>> it is called as the condition of wait_event_interruptible() it must not
>> sleep. Unfortunately some fr
On 19/09/2019 13:32, Alyssa Rosenzweig wrote:
>>> By the time MT8183 shows up in more concrete devices, it will, certainly
>>> in kernel-space and likely in userspace as well. At present, the DDK can
>>> be modified to run on top of the in-tree Mali drivers, i.e. "Bifrost on
>>> mainline
On 17/09/2019 10:23, Gerd Hoffmann wrote:
> VM_IO is wrong here, shmem uses normal ram not io memory.
>
> Signed-off-by: Gerd Hoffmann
Reviewed-by: Steven Price
> ---
> drivers/gpu/drm/drm_gem_shmem_helper.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
&
On 09/09/2019 16:41, Rob Herring wrote:
> On Fri, Sep 6, 2019 at 4:23 PM Steven Price wrote:
>>
>> On 04/09/2019 13:30, Mark Brown wrote:
>>> The panfrost driver requests a supply using regulator_get_optional()
>>> but both the name of the supply and the usage pat
(+CC Rob - I'm not sure why he was dropped)
On 05/09/2019 17:34, Mark Brown wrote:
> On Thu, Sep 05, 2019 at 02:02:38PM +0100, Steven Price wrote:
>> On 05/09/2019 13:40, Mark Brown wrote:
>
>>> Is that safe? You can't rely on being able to change voltages even if
&
On 03/09/2019 09:47, Andrew Jones wrote:
> On Fri, Aug 30, 2019 at 09:42:55AM +0100, Steven Price wrote:
>> Enable paravirtualization features when running under a hypervisor
>> supporting the PV_TIME_ST hypercall.
>>
>> For each (v)CPU, we ask the hypervisor for the l
On 30/08/2019 15:47, Andrew Jones wrote:
> On Fri, Aug 30, 2019 at 09:42:46AM +0100, Steven Price wrote:
>> Introduce a paravirtualization interface for KVM/arm64 based on the
>> "Arm Paravirtualized Time for Arm-Base Systems" specification DEN 0057A.
>>
>> Thi
On 30/08/2019 10:42, Christoffer Dall wrote:
> On Fri, Aug 30, 2019 at 09:42:50AM +0100, Steven Price wrote:
>> Implement the service call for configuring a shared structure between a
>> VCPU and the hypervisor in which the hypervisor can write the time
>> stolen from the
On 29/08/2019 10:05, Mike Rapoport wrote:
> On Wed, Aug 28, 2019 at 04:19:53PM +0200, Christoph Hellwig wrote:
[...]
>> diff --git a/include/linux/pagewalk.h b/include/linux/pagewalk.h
>> new file mode 100644
>> index ..df278a94086d
>> --- /dev/null
>> +++ b/include/linux/pagewalk.h
>>
On 28/08/2019 00:36, Jason Gunthorpe wrote:
> On Tue, Aug 27, 2019 at 04:34:31PM -0700, Andrew Morton wrote:
>> On Tue, 27 Aug 2019 01:34:13 + Jason Gunthorpe wrote:
>>
>>> On Sat, Aug 24, 2019 at 03:26:55PM -0700, Christoph Hellwig wrote:
On Fri, Aug 23, 2019 at 01:43:12PM +, Jason
ow.
>>
>> So what is the plan forward? Probably a little late for 5.3,
>> so queue it up in -mm for 5.4 and deal with the conflicts in at least
>> hmm? Queue it up in the hmm tree even if it doesn't 100% fit?
>
> Did we make a decision on this? Due to travel & LPC I'd like to
> finalize the hmm tree next week.
I was planning on rebasing my series on this and posting it for 5.4 - I
hadn't actually realised this hasn't been picked up yet. I haven't had
much time to look at this recently.
FWIW you can add for the series:
Acked-by: Steven Price
Steve
On 23/08/2019 12:45, Zenghui Yu wrote:
> Hi Steven,
>
> On 2019/8/21 23:36, Steven Price wrote:
>> Enable paravirtualization features when running under a hypervisor
>> supporting the PV_TIME_ST hypercall.
>>
>> For each (v)CPU, we ask the hypervisor for the l
On 23/08/2019 13:07, Zenghui Yu wrote:
> Hi Steven,
>
> Only one comment, at the bottom.
>
> On 2019/8/21 23:36, Steven Price wrote:
>> Implement the service call for configuring a shared structure between a
>> VCPU and the hypervisor in which the hypervisor can wr
On 22/08/2019 17:24, Sean Christopherson wrote:
> On Thu, Aug 22, 2019 at 04:46:10PM +0100, Steven Price wrote:
>> On 22/08/2019 16:28, Sean Christopherson wrote:
>>> On Wed, Aug 21, 2019 at 04:36:50PM +0100, Steven Price wrote:
>>>> kvm_put_guest() is analogous to p
On 23/08/2019 02:52, Rob Herring wrote:
> On Thu, Aug 22, 2019 at 4:32 AM Steven Price wrote:
>>
>> When modifying panfrost_devfreq_target() to support a device without a
>> regulator defined I missed the check on the error path. Let's add it.
>>
>> Rep
On 22/08/2019 16:28, Sean Christopherson wrote:
> On Wed, Aug 21, 2019 at 04:36:50PM +0100, Steven Price wrote:
>> kvm_put_guest() is analogous to put_user() - it writes a single value to
>> the guest physical address. The implementation is built upon put_user()
>> and so i
On 22/08/2019 11:57, Jonathan Cameron wrote:
> On Wed, 21 Aug 2019 16:36:53 +0100
> Steven Price wrote:
>
>> Allow user space to inform the KVM host where in the physical memory
>> map the paravirtualized time structures should be located.
>>
>> A device i
of memory available at this location.
The address is given in terms of the physical address visible to
the guest and must be page aligned. The guest will discover the address
via a hypercall.
Signed-off-by: Steven Price
---
arch/arm/include/asm/kvm_host.h | 4 ++
arch/arm64/include/asm/kvm_host.h
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