On Thu, Jun 20, 2019 at 09:28:46AM -0700, Guenter Roeck wrote:
> This gets rid of the unnecessary license boilerplate, and avoids
> having to deal with individual patches one by one.
>
> No functional changes.
>
> Signed-off-by: Guenter Roeck
> ---
> Note: Several drivers include a paragraph suc
On Fri, Jun 21, 2019 at 05:03:44PM -0700, Matthew Garrett wrote:
> From: Josh Boyer
>
> This option allows userspace to pass the RSDP address to the kernel, which
> makes it possible for a user to modify the workings of hardware . Reject
> the option when the kernel is locked down.
>
> Signed-o
On Fri, Jun 21, 2019 at 05:03:43PM -0700, Matthew Garrett wrote:
> From: Matthew Garrett
>
> custom_method effectively allows arbitrary access to system memory, making
> it possible for an attacker to circumvent restrictions on module loading.
> Disable it if the kernel is locked down.
>
> Signe
On Fri, Jun 21, 2019 at 05:03:45PM -0700, Matthew Garrett wrote:
> From: Linn Crosetto
>
> From the kernel documentation (initrd_table_override.txt):
>
> If the ACPI_INITRD_TABLE_OVERRIDE compile option is true, it is possible
> to override nearly any ACPI table provided by the BIOS with an
On Fri, Jun 21, 2019 at 05:03:46PM -0700, Matthew Garrett wrote:
> From: David Howells
>
> Prohibit replacement of the PCMCIA Card Information Structure when the
> kernel is locked down.
>
> Suggested-by: Dominik Brodowski
> Signed-off-by: David Howells
Reviewed-by: Kees Cook
-Kees
> Signe
On Fri, Jun 21, 2019 at 05:03:47PM -0700, Matthew Garrett wrote:
> From: David Howells
>
> Lock down TIOCSSERIAL as that can be used to change the ioport and irq
> settings on a serial port. This only appears to be an issue for the serial
> drivers that use the core serial code. All other drive
On Fri, Jun 21, 2019 at 05:03:48PM -0700, Matthew Garrett wrote:
> From: David Howells
>
> Provided an annotation for module parameters that specify hardware
> parameters (such as io ports, iomem addresses, irqs, dma channels, fixed
> dma buffers and other types).
>
> Suggested-by: Alan Cox
> S
On Fri, Jun 21, 2019 at 05:03:49PM -0700, Matthew Garrett wrote:
> From: David Howells
>
> The testmmiotrace module shouldn't be permitted when the kernel is locked
> down as it can be used to arbitrarily read and write MMIO space. This is
> a runtime check rather than buildtime in order to allow
On Fri, Jun 21, 2019 at 05:03:50PM -0700, Matthew Garrett wrote:
> From: David Howells
>
> Disallow access to /proc/kcore when the kernel is locked down to prevent
> access to cryptographic data. This is limited to lockdown
> confidentiality mode and is still permitted in integrity mode.
>
> Sig
On Fri, Jun 21, 2019 at 05:03:51PM -0700, Matthew Garrett wrote:
> From: David Howells
>
> Disallow the creation of perf and ftrace kprobes when the kernel is
> locked down in confidentiality mode by preventing their registration.
> This prevents kprobes from being used to access kernel memory to
On Fri, Jun 21, 2019 at 05:03:52PM -0700, Matthew Garrett wrote:
> From: David Howells
>
> There are some bpf functions can be used to read kernel memory:
> bpf_probe_read, bpf_probe_write_user and bpf_trace_printk. These allow
> private keys in kernel memory (e.g. the hibernation image signing
On Fri, Jun 21, 2019 at 05:03:53PM -0700, Matthew Garrett wrote:
> From: David Howells
>
> Disallow the use of certain perf facilities that might allow userspace to
> access kernel data.
>
> Signed-off-by: David Howells
> Signed-off-by: Matthew Garrett
> Cc: Peter Zijlstra
> Cc: Ingo Molnar
On Fri, Jun 21, 2019 at 05:03:58PM -0700, Matthew Garrett wrote:
> Print the content of current->comm in messages generated by lockdown to
> indicate a restriction that was hit. This makes it a bit easier to find
> out what caused the message.
>
> The message now patterned something like:
>
>
On Fri, 21 Jun 2019 17:03:51 -0700
Matthew Garrett wrote:
> From: David Howells
>
> Disallow the creation of perf and ftrace kprobes when the kernel is
> locked down in confidentiality mode by preventing their registration.
> This prevents kprobes from being used to access kernel memory to stea
Use delayed work instead of timers to run the watchdog of the e1000e
driver.
Simplify the code with one less middle function.
Signed-off-by: Detlev Casanova
---
drivers/net/ethernet/intel/e1000e/e1000.h | 5 +-
drivers/net/ethernet/intel/e1000e/netdev.c | 54 --
2 files ch
Hi,
2019년 6월 23일 (일) 오전 6:42, Saravana Kannan 님이 작성:
>
> On Sat, Jun 22, 2019 at 4:50 AM Chanwoo Choi wrote:
> >
> > Hi,
> >
> > Absolutely, I like this approach. I think that it is necessary to make
> > the connection
> > between frequencies of devices.
>
> Happy to hear that.
>
> > But, I have
Hi Krzysztof,
2019년 6월 23일 (일) 오전 4:20, Krzysztof Kozlowski 님이 작성:
>
> Enable support for Mali GPU with Panfrost and Lima drivers for:
> 1. Samsung Exynos5433 and Exynos7 (having Mali T760),
> 2. Allwiner A64 and H5 (Mali 400/450).
>
> Signed-off-by: Krzysztof Kozlowski
>
> ---
>
> Changes since
The user manual of V3/V3s/S3 declares a PLL_DDR1, however it's forgot
when developing the V3s CCU driver.
Add back the missing PLL_DDR1.
Fixes: d0f11d14b0bc ("clk: sunxi-ng: add support for V3s CCU")
Signed-off-by: Icenowy Zheng
---
No changes in v3/v2.
drivers/clk/sunxi-ng/ccu-sun8i-v3s.c | 1
Introduce the GPIO pins that is only available on V3 (not on V3s) to the
V3s pinctrl driver.
Signed-off-by: Icenowy Zheng
---
Changes in v3:
- Fixed code alignment.
- Fixed LVDS function number.
Changes in v2:
- Dropped the driver rename patch and apply the changes directly on V3s
driver.
dr
This patchset tries to add support for Allwinner V3/S3L and Sochip S3.
Allwinner V3/V3s/S3L and Sochip S3 share the same die, but with
different package. V3 is BGA w/o co-packaged DDR, V3s is QFP w/ DDR2,
S3L is BGA w/ DDR2 and S3 is BGA w/ DDR3. (S3 and S3L is compatible
for pinout, but because o
Shenzhen Sipeed Technology Co., Ltd. is a company focused on development
kits, which also contains rebranded Lichee Pi series.
Add its vendor prefix binding.
Signed-off-by: Icenowy Zheng
---
Changes in v3:
- Rebased because of the addition of sinlinx and sinovoip.
Patch introduced in v2.
Docu
Despite Allwinner V3 and V3s shares the same die, one peripheral (I2S)
is only available on V3, and thus the clocks is not declared for V3s
CCU.
Add a V3 CCU compatible string to the binding to prepare for a CCU
driver that provide I2S clock on V3, but not on V3s.
Signed-off-by: Icenowy Zheng
Re
The Allwinner S3/S3L/V3 SoCs all share the same die with the V3s SoC,
but with more GPIO wired out of the package.
Add DTSI files for these SoCs. The DTSI file for V3 just replaces the
pinctrl compatible string, and the S3/S3L DTSI files just include the V3
DTSI file.
Signed-off-by: Icenowy Zheng
Shenzhen SoChip Technology Co., Ltd. is a hardware vendor that produces
EVBs with Allwinner chips. There's also a SoC named S3 that is developed
by Allwinner (based on Allwinner V3/V3s) but branded SoChip.
Add the vendor prefix for SoChip.
Signed-off-by: Icenowy Zheng
Reviewed-by: Rob Herring
-
Allwinner V3 has the same main die with V3s, but with more pins wired.
There's a I2S bus on V3 that is not available on V3s.
Add the V3-only peripheral's clocks and reset to the V3s CCU driver,
bound to a new V3 compatible string. The driver name is not changed
because it's part of the device tree
The Lichee Zero Plus is a core board made by Sipeed, with a microUSB
connector on it, TF slot or WSON8 SD chip, optional eMMC or SPI Flash.
It has a gold finger connector for expansion, and UART is available from
reserved pins w/ 2.54mm pitch. The board can use either SoChip S3 or
Allwinner V3L SoC
Lichee zero plus is a core board made by Sipeed, which includes on-board
TF slot or SMT SD NAND, and optional SPI NOR or eMMC, a UART debug
header, a microUSB slot and a gold finger connector for expansion. It
can use either Sochip S3 or Allwinner S3L SoC.
Add the basic device tree for the core bo
On Sat, Jun 22, 2019 at 08:21:07PM +0200, Marcel Holtmann wrote:
> Hi Sasha,
>
> > [This is an automated email]
> >
> > This commit has been processed because it contains a "Fixes:" tag,
> > fixing commit: d5bb334a8e17 Bluetooth: Align minimum encryption key size
> > for LE and BR/EDR connection
On Fri, Jun 21, 2019 at 09:26:05AM -0700, Kees Cook wrote:
> On Fri, Jun 21, 2019 at 04:05:09PM +0200, Greg Kroah-Hartman wrote:
> > On Fri, Jun 21, 2019 at 04:03:47PM +0200, Greg Kroah-Hartman wrote:
> > > On Fri, Jun 14, 2019 at 10:43:11AM +0100, Colin King wrote:
> > > > From: Colin Ian King
>
On Fri, Jun 14, 2019 at 04:13:31PM +0200, Thomas Gleixner wrote:
> On Wed, 12 Jun 2019, Dmitry Safonov wrote:
>
> > From: Andrei Vagin
> >
> > After performance testing VDSO patches a noticeable 20% regression was
> > found on gettime_perf selftest with a cold cache.
> > As it turns to be, befor
In previous patch, an application could put part of its text section in
THP via madvise(). These THPs will be protected from writes when the
application is still running (TXTBSY). However, after the application
exits, the file is available for writes.
This patch avoids writes to file THP by droppi
With THP, current check of offset:
VM_BUG_ON_PAGE(page->index != offset, page);
is no longer accurate. Update it to:
VM_BUG_ON_PAGE(page_to_pgoff(page) != offset, page);
Acked-by: Rik van Riel
Signed-off-by: Song Liu
---
mm/filemap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion
Next patch will add khugepaged support of non-shmem files. This patch
renames these two functions to reflect the new functionality:
collapse_shmem()=> collapse_file()
khugepaged_scan_shmem() => khugepaged_scan_file()
Signed-off-by: Song Liu
---
mm/khugepaged.c | 23 +++
Changes v6 => v7:
1. Avoid accessing vma without holding mmap_sem (Hillf Dayton)
2. In collapse_file() use readahead API instead of gup API. This matches
better with existing logic for shmem.
3. Add inline documentation for @nr_thps (kbuild test robot)
Changes v5 => v6:
1. Improve THP stats in
Currently, filemap_fault() avoids trace condition with truncate by
checking page->mapping == mapping. This does not work for compound
pages. This patch let it check compound_head(page)->mapping instead.
Acked-by: Rik van Riel
Signed-off-by: Song Liu
---
mm/filemap.c | 2 +-
1 file changed, 1 in
This patch is (hopefully) the first step to enable THP for non-shmem
filesystems.
This patch enables an application to put part of its text sections to THP
via madvise, for example:
madvise((void *)0x60, 0x20, MADV_HUGEPAGE);
We tried to reuse the logic for THP on tmpfs.
Currently,
In preparation for non-shmem THP, this patch adds a few stats and exposes
them in /proc/meminfo, /sys/bus/node/devices//meminfo, and
/proc//task//smaps.
This patch is mostly a rewrite of Kirill A. Shutemov's earlier version:
https://lkml.org/lkml/2017/1/26/284.
Acked-by: Rik van Riel
Signed-off-
This set makes uprobe aware of THPs.
Currently, when uprobe is attached to text on THP, the page is split by
FOLL_SPLIT. As a result, uprobe eliminates the performance benefit of THP.
This set makes uprobe THP-aware. Instead of FOLL_SPLIT, we introduces
FOLL_SPLIT_PMD, which only split PMD for up
Currently, uprobe swaps the target page with a anonymous page in both
install_breakpoint() and remove_breakpoint(). When all uprobes on a page
are removed, the given mm is still using an anonymous page (not the
original page).
This patch allows uprobe to use original page when possible (all uprobe
This patch moves memcmp_pages() to mm/util.c and pages_identical() to
mm.h, so that we can use them in other files.
Signed-off-by: Song Liu
---
include/linux/mm.h | 7 +++
mm/ksm.c | 18 --
mm/util.c | 13 +
3 files changed, 20 insertions(+), 1
This patches uses newly added FOLL_SPLIT_PMD in uprobe. This enables easy
regroup of huge pmd after the uprobe is disabled (in next patch).
Signed-off-by: Song Liu
---
kernel/events/uprobes.c | 6 ++
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/kernel/events/uprobes.c b/kern
After all uprobes are removed from the huge page (with PTE pgtable), it
is possible to collapse the pmd and benefit from THP again. This patch
does the collapse by setting AS_COLLAPSE_PMD. khugepage would retrace
the page table.
A check for vma->anon_vma is removed from retract_page_tables(). The
This patches introduces a new foll_flag: FOLL_SPLIT_PMD. As the name says
FOLL_SPLIT_PMD splits huge pmd for given mm_struct, the underlining huge
page stays as-is.
FOLL_SPLIT_PMD is useful for cases where we need to use regular pages,
but would switch back to huge page and huge pmd on. One of suc
khugepaged needs exclusive mmap_sem to access page table. When it fails
to lock mmap_sem, the page will fault in as pte-mapped THP. As the page
is already a THP, khugepaged will not handle this pmd again.
This patch enables the khugepaged to retry retract_page_tables().
A new flag AS_COLLAPSE_PMD
On Sat, Jun 22, 2019 at 01:37:10PM +0300, Andy Shevchenko wrote:
> On Fri, Jun 21, 2019 at 9:53 PM Benoit Parrot wrote:
> >
> > As a wakeup source when the system is in suspend there is little point
> > trying to access a register across the i2c bus as it is probably still
> > inactive. We need to
On Sat, Jun 22, 2019 at 9:28 PM Chanwoo Choi wrote:
>
> Hi,
>
> 2019년 6월 23일 (일) 오전 6:42, Saravana Kannan 님이 작성:
> >
> > On Sat, Jun 22, 2019 at 4:50 AM Chanwoo Choi wrote:
> > >
> > > Hi,
> > >
> > > Absolutely, I like this approach. I think that it is necessary to make
> > > the connection
> >
On Fri, Jun 21, 2019 at 07:50:42AM -0700, Jeffrey Hugo wrote:
> Elan_i2c and hid-quirks work in conjunction to decide which devices each
> driver will handle. Elan_i2c has a whitelist of devices that should be
> consumed by hid-quirks so that there is one master list of devices to
> handoff betwee
Instead of doing conversion by hand, let's use the proper accessors.
Signed-off-by: Dmitry Torokhov
---
drivers/input/touchscreen/edt-ft5x06.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/input/touchscreen/edt-ft5x06.c
b/drivers/input/touchscreen/edt-ft5x06.c
Now that input_mt_report_slot_state() returns true if slot is active we no
longer need a temporary for the slot state.
Signed-off-by: Dmitry Torokhov
---
drivers/input/touchscreen/edt-ft5x06.c | 13 -
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/drivers/input/touchsc
On Wed, Jun 19, 2019 at 09:26:55AM -0500, Gustavo A. R. Silva wrote:
> One of the more common cases of allocation size calculations is finding
> the size of a structure that has a zero-sized array at the end, along
> with memory for some number of elements for that array. For example:
>
> struct g
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