]
https://cs.android.com/android/kernel/superproject/+/common-android-mainline:common/drivers/staging/android/ashmem.c
[2] https://developer.android.com/reference/android/database/CursorWindow
Signed-off-by: Isaac J. Manjarres
---
include/uapi/linux/fcntl.h | 1 +
mm/memfd.c | 39
Add tests to ensure that F_SEAL_FUTURE_EXEC behaves as expected.
Signed-off-by: Isaac J. Manjarres
---
tools/testing/selftests/memfd/memfd_test.c | 79 ++
1 file changed, 79 insertions(+)
diff --git a/tools/testing/selftests/memfd/memfd_test.c
b/tools/testing/selftests
inks to previous versions:
v1:
https://lore.kernel.org/all/20241206010930.3871336-1-isaacmanjar...@google.com/
Isaac J. Manjarres (2):
mm/memfd: Add support for F_SEAL_FUTURE_EXEC to memfd
selftests/memfd: Add tests for F_SEAL_FUTURE_EXEC
include/uapi/linux/fcntl.h | 1 +
mm/memfd.
]
https://cs.android.com/android/kernel/superproject/+/common-android-mainline:common/drivers/staging/android/ashmem.c
[2] https://developer.android.com/reference/android/database/CursorWindow
Signed-off-by: Isaac J. Manjarres
---
include/uapi/linux/fcntl.h | 1 +
mm/memfd.c | 39
Add tests to ensure that F_SEAL_FUTURE_EXEC behaves as expected.
Signed-off-by: Isaac J. Manjarres
---
tools/testing/selftests/memfd/memfd_test.c | 79 ++
1 file changed, 79 insertions(+)
diff --git a/tools/testing/selftests/memfd/memfd_test.c
b/tools/testing/selftests
fa47dbd8a23@lucifer.local
[6]
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/tree/?h=mm-unstable
[7]
https://lore.kernel.org/all/3a53b154-1e46-45fb-a559-65afa7a8a788@lucifer.local/
Links to previous versions:
v1:
https://lore.kernel.org/all/20241206010930.3871336-1-isaacma
Add tests to ensure that F_SEAL_FUTURE_EXEC behaves as expected.
Cc: Suren Baghdasaryan
Cc: Kalesh Singh
Cc: John Stultz
Signed-off-by: Isaac J. Manjarres
---
tools/testing/selftests/memfd/memfd_test.c | 79 ++
1 file changed, 79 insertions(+)
diff --git a/tools/testing
/android/kernel/superproject/+/common-android-mainline:common/drivers/staging/android/ashmem.c
[2] https://developer.android.com/reference/android/database/CursorWindow
Cc: Suren Baghdasaryan
Cc: Kalesh Singh
Cc: John Stultz
Signed-off-by: Isaac J. Manjarres
---
include/linux/mm.h | 5
rWindow
[3] https://lore.kernel.org/all/cover.1732804776.git.lorenzo.stoa...@oracle.com/
Isaac J. Manjarres (2):
mm/memfd: Add support for F_SEAL_FUTURE_EXEC to memfd
selftests/memfd: Add tests for F_SEAL_FUTURE_EXEC
include/linux/mm.h | 5 ++
include/uapi/lin
informative message to let the user know why
the sysctl tests are not being run.
Fixes: 11f75a01448f ("selftests/memfd: add tests for MFD_NOEXEC_SEAL MFD_EXEC")
Cc: sta...@vger.kernel.org # v6.6+
Cc: Jeff Xu
Cc: Suren Baghdasaryan
Cc: Kalesh Singh
Signed-off-by: Isaac J. Manjarres
---
too
u-qcom: Read back stream mappings")
Signed-off-by: Isaac J. Manjarres
Cc: sta...@vger.kernel.org
---
drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index bcda1
sical address ranges being
mapped are within the appropriate limits.
-Added Sai Prakash Ranjan's "Tested-by" tag.
Thanks,
Isaac
Isaac J. Manjarres (5):
iommu/io-pgtable: Introduce map_sg() as a page table op
iommu/io-pgtable-arm: Hook up map_sg()
iommu/io-pgtable-arm-v7s: Hook
calls, and
boosting overall iommu_map_sg() performance.
Signed-off-by: Isaac J. Manjarres
Tested-by: Sai Prakash Ranjan
---
include/linux/io-pgtable.h | 6 ++
1 file changed, 6 insertions(+)
diff --git a/include/linux/io-pgtable.h b/include/linux/io-pgtable.h
index ea727eb..6d0e731 100644
Now that everything is in place for iommu_map_sg() to defer
mapping a scatter-gather list to the io-pgtable layer, implement
the map_sg() callback in the SMMU driver, so that iommu_map_sg()
can invoke it with the entire scatter-gather list that will be
mapped.
Signed-off-by: Isaac J. Manjarres
Implement the map_sg io-pgtable op for the ARMv7s io-pgtable
code, so that IOMMU drivers can call it when they need to map
a scatter-gather list.
Signed-off-by: Isaac J. Manjarres
Tested-by: Sai Prakash Ranjan
---
drivers/iommu/io-pgtable-arm-v7s.c | 90
n the io-pgtable layer.
For IOMMU drivers that do not provide a callback, the default
implementation of iterating through the scatter-gather list, while
calling iommu_map() will be used.
Signed-off-by: Isaac J. Manjarres
Tested-by: Sai Prakash Ranjan
---
drivers/iommu/iommu.c
Implement the map_sg io-pgtable op for the ARM LPAE io-pgtable
code, so that IOMMU drivers can call it when they need to map
a scatter-gather list.
Signed-off-by: Isaac J. Manjarres
Tested-by: Sai Prakash Ranjan
---
drivers/iommu/io-pgtable-arm.c | 86
ap_sg latencies is
the same in both experiments. Clearly, reducing the jumps
between the different layers in the IOMMU code offers a
signficant performance boost in iommu_map_sg() latency.
Thanks,
Isaac
Isaac J. Manjarres (5):
iommu/io-pgtable: Introduce map_sg() as a page table op
iommu/io-pg
Now that everything is in place for iommu_map_sg() to defer
mapping a scatter-gather list to the io-pgtable layer, implement
the map_sg() callback in the SMMU driver, so that iommu_map_sg()
can invoke it with the entire scatter-gather list that will be
mapped.
Signed-off-by: Isaac J. Manjarres
Implement the map_sg io-pgtable op for the ARMv7s io-pgtable
code, so that IOMMU drivers can call it when they need to map
a scatter-gather list.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm-v7s.c | 90 ++
1 file changed, 90 insertions
n the io-pgtable layer.
For IOMMU drivers that do not provide a callback, the default
implementation of iterating through the scatter-gather list, while
calling iommu_map() will be used.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/iommu.c | 13 +
include/linux/iommu.h | 5 +++
Implement the map_sg io-pgtable op for the ARM LPAE io-pgtable
code, so that IOMMU drivers can call it when they need to map
a scatter-gather list.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm.c | 86 ++
drivers/iommu/iommu.c
calls, and
boosting overall iommu_map_sg() performance.
Signed-off-by: Isaac J. Manjarres
---
include/linux/io-pgtable.h | 6 ++
1 file changed, 6 insertions(+)
diff --git a/include/linux/io-pgtable.h b/include/linux/io-pgtable.h
index ea727eb..6d0e731 100644
--- a/include/linux/io-pgtable.h
ng the ARM SMMU driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c
b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index d8c6bfd..a72649f 100644
--- a/drivers/iommu/arm/ar
In preparation for modularizing io-pgtable formats, add support
for reference counting the io-pgtable format modules to ensure
that the modules are not unloaded while they are in use.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm-v7s.c | 1 +
drivers/iommu/io-pgtable-arm.c
oading the Panfrost DRM driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/gpu/drm/panfrost/panfrost_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c
b/drivers/gpu/drm/panfrost/panfrost_drv.c
index 83a461b..7294622 100644
--- a/drivers/gpu/dr
-pgtable formats, switch to a
dynamic registration scheme, where each io-pgtable format can register
their init functions with the io-pgtable code at boot or module
insertion time.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm-v7s.c | 34 +-
drivers/iommu/io-pgtable
ARM SMMUv3 driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 8ca7415..c498ac8 100644
--- a/drivers/iom
Now that everything is in place for modular io-pgtable formats,
allow the ARM LPAE and ARMV7S io-pgtable formats to be built
as modules.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/Kconfig | 4 ++--
drivers/iommu/io-pgtable-arm-v7s.c | 2 ++
drivers/iommu/io-pgtable-arm.c
Kconfig options for the ARM LPAE nad ARM V7S to tristate.
Thanks in advance for the feedback,
Isaac J. Manjarres
Isaac J. Manjarres (7):
iommu/io-pgtable: Introduce dynamic io-pgtable fmt registration
iommu/io-pgtable: Add refcounting for io-pgtable format modules
iommu/arm-smmu: Add dependency
he MSM DRM driver module.
Signed-off-by: Isaac J. Manjarres
---
drivers/gpu/drm/msm/msm_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 535a026..8be3506 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm
descriptor format (either or both ARM LPAE and ARMV7S)
can be built as modules.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/Kconfig | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 192ef8f..d7de6db 100644
--- a
() instead.
Also, add the GPL v2 module license to the io-pgtable source file.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable.c | 7 +--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/io-pgtable.c b/drivers/iommu/io-pgtable.c
index 94394c8..867ecb4
river module.
Thanks in advance for the feedback,
Isaac J. Manjarres
Isaac J. Manjarres (3):
iommu/io-pgtable-arm: Prepare for modularization
iommu/io-pgtable: Prepare for modularization
iommu/io-pgtable: Allow building as a module
drivers/iommu/Kconfig | 6 +++---
drivers/iom
The io-pgtable-arm and io-pgtable-arm-v7s source files will
be compiled as separate modules, along with the io-pgtable
source. Export the symbols for the io-pgtable init function
structures for the io-pgtable module to use.
Signed-off-by: Isaac J. Manjarres
---
drivers/iommu/io-pgtable-arm
y to help move along the CPU hotplug teardown state machine
quickly.
Signed-off-by: Isaac J. Manjarres
---
kernel/fork.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/fork.c b/kernel/fork.c
index 4d32190..68346a0 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -202,7
ctually be accessed when
considering if accessing a certain amount of bytes will cause
the memory address to wrap around.
Fixes: f5509cc18daa ("mm: Hardened usercopy")
Co-developed-by: Prasad Sodagudi
Signed-off-by: Prasad Sodagudi
Signed-off-by: Isaac J. Manjarres
Cc: sta...@vger.kernel.org
ctually be accessed when
considering if accessing a certain amount of bytes will cause
the memory address to wrap around.
Change-Id: I2563a5988e41122727ede17180f365e999b953e6
Fixes: f5509cc18daa ("mm: Hardened usercopy")
Co-Developed-by: Prasad Sodagudi
Signed-off-by: Prasad Sodagudi
Si
works and waking the stopper threads is atomic.
Fixes: 0b26351b910f ("stop_machine, sched: Fix migrate_swap() vs.
active_balance() deadlock")
Co-Developed-by: Isaac J. Manjarres
Signed-off-by: Prasad Sodagudi
Signed-off-by: Isaac J. Manjarres
Cc: sta...@vger.kernel.org
---
kernel/stop_ma
Commit-ID: 2610e88946632afb78aa58e61f11368ac4c0af7b
Gitweb: https://git.kernel.org/tip/2610e88946632afb78aa58e61f11368ac4c0af7b
Author: Isaac J. Manjarres
AuthorDate: Tue, 17 Jul 2018 12:35:29 -0700
Committer: Ingo Molnar
CommitDate: Wed, 25 Jul 2018 11:25:08 +0200
stop_machine
eueing the works and waking
the stopper threads is atomic.
Fixes: 9fb8d5dc4b64 ("stop_machine, Disable preemption when waking two stopper
threads")
Co-Developed-by: Prasad Sodagudi
Co-Developed-by: Pavankumar Kondeti
Signed-off-by: Isaac J. Manjarres
Signed-off-by: Prasad Sodagudi
Signe
ensure that the operation of queueing the works and waking
the stopper threads is atomic.
Fixes: 0b26351b910f ("stop_machine, sched: Fix migrate_swap() vs.
active_balance() deadlock")
Co-Developed-by: Prasad Sodagudi
Co-Developed-by: Pavankumar Kondeti
Signed-off-by: Isaac J. Manjarres
Commit-ID: 9fb8d5dc4b649dd190e1af4ead670753e71bf907
Gitweb: https://git.kernel.org/tip/9fb8d5dc4b649dd190e1af4ead670753e71bf907
Author: Isaac J. Manjarres
AuthorDate: Tue, 3 Jul 2018 15:02:14 -0700
Committer: Thomas Gleixner
CommitDate: Sun, 15 Jul 2018 12:12:45 +0200
stop_machine
dagudi
Co-Developed-by: Pavankumar Kondeti
Signed-off-by: Isaac J. Manjarres
Signed-off-by: Prasad Sodagudi
Signed-off-by: Pavankumar Kondeti
Cc: sta...@vger.kernel.org
---
kernel/stop_machine.c | 6 +-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/kernel/stop_machine.c b/
permanently
scheduled out, leaving the remaining stopper thread asleep
in the wake queue.
Co-developed-by: Pavankumar Kondeti
Signed-off-by: Prasad Sodagudi
Signed-off-by: Pavankumar Kondeti
Signed-off-by: Isaac J. Manjarres
---
kernel/stop_machine.c | 6 +-
1 file changed, 5 insertions(+),
so that the
source CPU's stopper thread is added to the wake queue last,
so that the source CPU's stopper thread is woken up last,
ensuring that all other threads that it depends on are woken
up before it runs.
Co-developed-by: Prasad Sodagudi
Signed-off-by: Prasad Sodagudi
Signed-off-
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