On 2024/8/27 23:40, Pierre Gondois wrote:
> Hello Yicong,
>
> Is it necessary to have an explicit dependency over SMP for arm64 ? Cf.
> commit 4b3dc9679cf7 ("arm64: force CONFIG_SMP=y and remove redundant
> #ifdefs")
Thanks for the information. Then it's redundant to depend on CONFIG_SMP. Will
On Wed, Aug 28, 2024 at 08:21:14AM +0200, Andreas Larsson wrote:
> On 2024-08-28 08:10, Christoph Hellwig wrote:
> > --- a/drivers/xen/Kconfig
> > +++ b/drivers/xen/Kconfig
> > @@ -177,8 +177,8 @@ config XEN_GRANT_DMA_ALLOC
> >
> > config SWIOTLB_XEN
> > def_bool y
> > + depends on ARCH_DM
Haren Myneni writes:
> On Wed, 2024-08-28 at 18:12 +1000, Michael Ellerman wrote:
>> Hi Haren,
>>
>> One query below about the of_node refcounting.
>>
>> Haren Myneni writes:
>> > In the powerpc-pseries specific implementation, the IO hotplug
>> > event is handled in the user space (drmgr tool)
On 2024/8/26 23:26, David Hildenbrand wrote:
On 22.08.24 09:13, Qi Zheng wrote:
In do_adjust_pte(), we may modify the pte entry. At this time, the write
lock of mmap_lock is not held, and the pte_same() check is not performed
after the PTL held. The corresponding pmd entry may have been modif
On 2024/8/28 18:48, David Hildenbrand wrote:
On 27.08.24 06:33, Qi Zheng wrote:
Hi David,
On 2024/8/26 23:21, David Hildenbrand wrote:
On 22.08.24 09:13, Qi Zheng wrote:
Currently, the usage of pte_offset_map_nolock() can be divided into the
following two cases:
1) After acquiring PTL, on
If an interrupt occurs in queued_spin_lock_slowpath() after we increment
qnodesp->count and before node->lock is initialized, another CPU might
see stale lock values in get_tail_qnode(). If the stale lock value happens
to match the lock on that CPU, then we write to the "next" pointer of
the wrong
On Wed, 2024-08-28 at 18:12 +1000, Michael Ellerman wrote:
> Hi Haren,
>
> One query below about the of_node refcounting.
>
> Haren Myneni writes:
> > In the powerpc-pseries specific implementation, the IO hotplug
> > event is handled in the user space (drmgr tool). For the DLPAR
> > IO ADD, the
On 2024/8/28 21:08, Krzysztof Kozlowski wrote:
> On 28/08/2024 03:58, Jinjie Ruan wrote:
>>
>>
>> On 2024/8/27 21:50, Krzysztof Kozlowski wrote:
>>> On 27/08/2024 13:46, Jinjie Ruan wrote:
Use the dev_err_probe() helper to simplify error handling during probe.
This also handle scenario
On Tue, Aug 27, 2024 at 08:30:09AM -0700, Ian Rogers wrote:
> On Mon, Aug 26, 2024 at 10:33 PM Kajol Jain wrote:
> >
> > Update JSON/events for power10 platform with additional events.
> >
> > Signed-off-by: Kajol Jain
>
> For the series:
> Reviewed-by: Ian Rogers
Thanks, applied to perf-tools
On Tue, Aug 27, 2024 at 10:49:22PM GMT, Charlie Jenkins wrote:
> Add a selftest for MAP_BELOW_HINT that maps until it runs out of space
> below the hint address.
>
> Signed-off-by: Charlie Jenkins
> ---
> tools/testing/selftests/mm/Makefile | 1 +
> tools/testing/selftests/mm/map_below_h
On Tue, Aug 27, 2024 at 10:49:06PM GMT, Charlie Jenkins wrote:
> Some applications rely on placing data in free bits addresses allocated
> by mmap. Various architectures (eg. x86, arm64, powerpc) restrict the
> address returned by mmap to be less than the maximum address space,
> unless the hint ad
On 8/27/24 22:49, Charlie Jenkins wrote:
> Some applications rely on placing data in free bits addresses allocated
> by mmap. Various architectures (eg. x86, arm64, powerpc) restrict the
> address returned by mmap to be less than the maximum address space,
> unless the hint address is greater than
On Wed, Aug 28, 2024 at 11:51:02AM +0200, Maxime Chevallier wrote:
> fs_enet is a quite old but still used Ethernet driver found on some NXP
> devices. It has support for 10/100 Mbps ethernet, with half and full
> duplex. Some variants of it can use RMII, while other integrations are
> MII-only.
>
On Wed, 28 Aug 2024 at 14:57, Segher Boessenkool
wrote:
>
> On Wed, Aug 28, 2024 at 12:24:12PM +, Arnd Bergmann wrote:
> > On Wed, Aug 28, 2024, at 11:18, Jason A. Donenfeld wrote:
> > > On Tue, Aug 27, 2024 at 05:53:30PM -0500, Segher Boessenkool wrote:
> > >> On Tue, Aug 27, 2024 at 11:08:19
On Wed, Aug 28, 2024 at 01:59:18PM -0700, Charlie Jenkins wrote:
> On Wed, Aug 28, 2024 at 02:31:42PM -0400, Liam R. Howlett wrote:
> > * Charlie Jenkins [240828 01:49]:
> > > Some applications rely on placing data in free bits addresses allocated
> > > by mmap. Various architectures (eg. x86, arm
On Wed, Aug 28, 2024 at 02:31:42PM -0400, Liam R. Howlett wrote:
> * Charlie Jenkins [240828 01:49]:
> > Some applications rely on placing data in free bits addresses allocated
> > by mmap. Various architectures (eg. x86, arm64, powerpc) restrict the
> > address returned by mmap to be less than th
On Wed, Aug 28, 2024 at 11:29:56AM -0700, Dave Hansen wrote:
> On 8/27/24 22:49, Charlie Jenkins wrote:
> > Some applications rely on placing data in free bits addresses allocated
> > by mmap. Various architectures (eg. x86, arm64, powerpc) restrict the
> > address returned by mmap to be less than
* Charlie Jenkins [240828 01:49]:
> Some applications rely on placing data in free bits addresses allocated
> by mmap. Various architectures (eg. x86, arm64, powerpc) restrict the
> address returned by mmap to be less than the maximum address space,
> unless the hint address is greater than this v
On Wed, Aug 28, 2024 at 06:48:33PM +0100, Lorenzo Stoakes wrote:
> On Tue, Aug 27, 2024 at 10:49:22PM GMT, Charlie Jenkins wrote:
> > Add a selftest for MAP_BELOW_HINT that maps until it runs out of space
> > below the hint address.
> >
> > Signed-off-by: Charlie Jenkins
> > ---
> > tools/testing
On Wed, Aug 28, 2024 at 07:12:55PM +0200, Ard Biesheuvel wrote:
> On Wed, 28 Aug 2024 at 18:24, Segher Boessenkool
> wrote:
> > > In my experience, this is likely to do the opposite: it causes the
> > > compiler to 'forget' the semantics of memcpy() and memset(), so that
> > > explicit trivial cal
On Wed, Aug 28, 2024 at 08:34:49AM +0200, Christophe Leroy wrote:
> Hi Charlie,
>
> Le 28/08/2024 à 07:49, Charlie Jenkins a écrit :
> > Add support for MAP_BELOW_HINT to arch_get_mmap_base() and
> > arch_get_mmap_end().
> >
> > Signed-off-by: Charlie Jenkins
> > ---
> > arch/powerpc/include/a
Hello Russell,
On Wed, 28 Aug 2024 14:54:57 +0100
"Russell King (Oracle)" wrote:
> On Wed, Aug 28, 2024 at 01:44:13PM +0200, Maxime Chevallier wrote:
> > Hi Russell,
> >
> > On Wed, 28 Aug 2024 11:38:31 +0100
> > "Russell King (Oracle)" wrote:
> >
> > > On Wed, Aug 28, 2024 at 11:51:02AM +0
On Wed, Aug 28, 2024 at 01:44:13PM +0200, Maxime Chevallier wrote:
> Hi Russell,
>
> On Wed, 28 Aug 2024 11:38:31 +0100
> "Russell King (Oracle)" wrote:
>
> > On Wed, Aug 28, 2024 at 11:51:02AM +0200, Maxime Chevallier wrote:
> > > +static int fs_eth_ioctl(struct net_device *dev, struct ifreq *i
On 28/08/2024 03:58, Jinjie Ruan wrote:
>
>
> On 2024/8/27 21:50, Krzysztof Kozlowski wrote:
>> On 27/08/2024 13:46, Jinjie Ruan wrote:
>>> Use the dev_err_probe() helper to simplify error handling during probe.
>>> This also handle scenario, when EDEFER is returned and useless error
>>> is print
On Wed, Aug 28, 2024 at 07:33:13AM -0500, Segher Boessenkool wrote:
> On Wed, Aug 28, 2024 at 01:18:34PM +0200, Jason A. Donenfeld wrote:
> > On Tue, Aug 27, 2024 at 05:53:30PM -0500, Segher Boessenkool wrote:
> > > On Tue, Aug 27, 2024 at 11:08:19AM -0700, Eric Biggers wrote:
> > > > > +
On Wed, Aug 28, 2024 at 02:26:08PM +0200, Jason A. Donenfeld wrote:
> On Wed, Aug 28, 2024 at 2:24 PM Arnd Bergmann wrote:
> >
> > On Wed, Aug 28, 2024, at 11:18, Jason A. Donenfeld wrote:
> > > On Tue, Aug 27, 2024 at 05:53:30PM -0500, Segher Boessenkool wrote:
> > >> On Tue, Aug 27, 2024 at 11:0
On Wed, Aug 28, 2024 at 12:24:12PM +, Arnd Bergmann wrote:
> On Wed, Aug 28, 2024, at 11:18, Jason A. Donenfeld wrote:
> > On Tue, Aug 27, 2024 at 05:53:30PM -0500, Segher Boessenkool wrote:
> >> On Tue, Aug 27, 2024 at 11:08:19AM -0700, Eric Biggers wrote:
> >> >
> >> > Is there a compiler fl
On Wed, Aug 28, 2024 at 01:18:34PM +0200, Jason A. Donenfeld wrote:
> On Tue, Aug 27, 2024 at 05:53:30PM -0500, Segher Boessenkool wrote:
> > On Tue, Aug 27, 2024 at 11:08:19AM -0700, Eric Biggers wrote:
> > > > + for (i = 0; i < ARRAY_SIZE(params->reserved); i++)
> > > > +
On Wed, Aug 28, 2024 at 2:24 PM Arnd Bergmann wrote:
>
> On Wed, Aug 28, 2024, at 11:18, Jason A. Donenfeld wrote:
> > On Tue, Aug 27, 2024 at 05:53:30PM -0500, Segher Boessenkool wrote:
> >> On Tue, Aug 27, 2024 at 11:08:19AM -0700, Eric Biggers wrote:
> >> >
> >> > Is there a compiler flag that
On Wed, Aug 28, 2024, at 11:18, Jason A. Donenfeld wrote:
> On Tue, Aug 27, 2024 at 05:53:30PM -0500, Segher Boessenkool wrote:
>> On Tue, Aug 27, 2024 at 11:08:19AM -0700, Eric Biggers wrote:
>> >
>> > Is there a compiler flag that could be used to disable the generation of
>> > calls
>> > to me
On Wed, Aug 28, 2024 at 11:51:02AM +0200, Maxime Chevallier wrote:
> +static int fs_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
> +{
> + struct fs_enet_private *fep = netdev_priv(dev);
> +
> + if (!netif_running(dev))
> + return -EINVAL;
Why do you need this c
Hi Russell,
On Wed, 28 Aug 2024 11:38:31 +0100
"Russell King (Oracle)" wrote:
> On Wed, Aug 28, 2024 at 11:51:02AM +0200, Maxime Chevallier wrote:
> > +static int fs_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
> > +{
> > + struct fs_enet_private *fep = netdev_priv(dev);
> > +
On Tue, Aug 27, 2024 at 05:53:30PM -0500, Segher Boessenkool wrote:
> On Tue, Aug 27, 2024 at 11:08:19AM -0700, Eric Biggers wrote:
> > On Thu, Aug 22, 2024 at 09:13:13AM +0200, Christophe Leroy wrote:
> > > With the current implementation, __cvdso_getrandom_data() calls
> > > memset(), which is un
On 27.08.24 06:33, Qi Zheng wrote:
Hi David,
On 2024/8/26 23:21, David Hildenbrand wrote:
On 22.08.24 09:13, Qi Zheng wrote:
Currently, the usage of pte_offset_map_nolock() can be divided into the
following two cases:
1) After acquiring PTL, only read-only operations are performed on the
PTE
On 8/27/24 21:00, Ian Rogers wrote:
> On Mon, Aug 26, 2024 at 10:33 PM Kajol Jain wrote:
>>
>> Update JSON/events for power10 platform with additional events.
>>
>> Signed-off-by: Kajol Jain
>
> For the series:
> Reviewed-by: Ian Rogers
Hi Ian,
Thanks for reviewing the patchset.
>
> Just
cxl_pci_to_cfg_record() is not used anywhere, and its function can be
replacd with PCI_DEVID(), so remove it.
Signed-off-by: Jinjie Ruan
---
drivers/misc/cxl/vphb.c | 12 +---
include/misc/cxl.h | 4
2 files changed, 1 insertion(+), 15 deletions(-)
diff --git a/drivers/misc/c
Le 28/08/2024 à 11:51, Maxime Chevallier a écrit :
The PHY speed and duplex should be manipulated using the SPEED_XXX and
DUPLEX_XXX macros available. Use it in the fcc, fec and scc MAC for fs_enet.
Signed-off-by: Maxime Chevallier
Reviewed-by: Christophe Leroy
---
drivers/net/ethern
The ENET driver has SPDX tags in the header files, but they were missing
in the C files. Change the licence information to SPDX format.
Signed-off-by: Maxime Chevallier
---
drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c | 5 +
drivers/net/ethernet/freescale/fs_enet/mac-fcc.c | 5
The PHY speed and duplex should be manipulated using the SPEED_XXX and
DUPLEX_XXX macros available. Use it in the fcc, fec and scc MAC for fs_enet.
Signed-off-by: Maxime Chevallier
---
drivers/net/ethernet/freescale/fs_enet/mac-fcc.c | 4 ++--
drivers/net/ethernet/freescale/fs_enet/mac-fec.c | 2
fs_enet is a quite old but still used Ethernet driver found on some NXP
devices. It has support for 10/100 Mbps ethernet, with half and full
duplex. Some variants of it can use RMII, while other integrations are
MII-only.
Add phylink support, thus removing custom fixed-link hanldling.
This also a
Le 28/08/2024 à 11:51, Maxime Chevallier a écrit :
There's no user of the struct phy_info, the 'phy' field and the
mii_if_info in the fs_enet driver, probably dating back when phylib
wasn't as widely used. Drop these from the driver code.
Seems like they haven't been used since commit 5b4b8
Due to the age of the driver and the slow recent activity on it, the code
has taken some layers of dust. Clean the main driver file up so that it
passes checkpatch and also conforms with the net coding style.
Changes include :
- Re-ordering of the variable declarations for RCT
- Fixing the comme
There's no user of the struct phy_info, the 'phy' field and the
mii_if_info in the fs_enet driver, probably dating back when phylib
wasn't as widely used. Drop these from the driver code.
Signed-off-by: Maxime Chevallier
---
drivers/net/ethernet/freescale/fs_enet/fs_enet.h | 11 ---
1 f
There's no in-tree user for the fs_ops .adjust_link() function, so we
can always use the generic one in fe_enet-main.
Signed-off-by: Maxime Chevallier
---
drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c | 7 +--
drivers/net/ethernet/freescale/fs_enet/fs_enet.h | 1 -
2 files chang
This series aims at improving the fs_enet code and port it's PHY
handling from direct phylib access to using phylink instead.
Although this driver is quite old, there are still some users out there,
running an upstream kernel. The development I'm doing is on an MPC885
device, which uses fs_enet, a
On 2024/8/22 15:13, Qi Zheng wrote:
Currently, the usage of pte_offset_map_nolock() can be divided into the
following two cases:
1) After acquiring PTL, only read-only operations are performed on the PTE
page. In this case, the RCU lock in pte_offset_map_nolock() will ensure
that the
devm_kasprintf() can return a NULL pointer on failure but this
returned value is not checked.
Fixes: acfe63ec1c59 ("mtd: Convert to using %pOFn instead of device_node.name")
Signed-off-by: Charles Han
---
drivers/mtd/devices/powernv_flash.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/
The pseries Shared Processor Logical Partition(SPLPAR) machines
can retrieve a log of dispatch and preempt events from the
hypervisor using data from Disptach Trace Log(DTL) buffer.
With this information, user can retrieve when and why each dispatch &
preempt has occurred. Added an interface to exp
Details are added for the vpa_dtl pmu event and format
attributes in the ABI documentation.
Signed-off-by: Kajol Jain
---
.../sysfs-bus-event_source-devices-vpa-dtl| 25 +++
1 file changed, 25 insertions(+)
create mode 100644
Documentation/ABI/testing/sysfs-bus-event_source
devm_kasprintf() can return a NULL pointer on failure but this
returned value is not checked.
Fixes: acfe63ec1c59 ("mtd: Convert to using %pOFn instead of device_node.name")
Signed-off-by: Charles Han
---
drivers/mtd/devices/powernv_flash.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/
Le 28/08/2024 à 11:50, Maxime Chevallier a écrit :
There's no in-tree user for the fs_ops .adjust_link() function, so we
can always use the generic one in fe_enet-main.
Signed-off-by: Maxime Chevallier
Reviewed-by: Christophe Leroy
---
drivers/net/ethernet/freescale/fs_enet/fs_enet-ma
Le 28/08/2024 à 11:50, Maxime Chevallier a écrit :
Due to the age of the driver and the slow recent activity on it, the code
has taken some layers of dust. Clean the main driver file up so that it
passes checkpatch and also conforms with the net coding style.
Changes include :
- Re-ordering
Le 28/08/2024 à 11:50, Maxime Chevallier a écrit :
The ENET driver has SPDX tags in the header files, but they were missing
in the C files. Change the licence information to SPDX format.
AFAIK you have to CC linux-s...@vger.kernel.org for this kind of change.
Signed-off-by: Maxime Chevall
Le 28/08/2024 à 11:50, Maxime Chevallier a écrit :
This series aims at improving the fs_enet code and port it's PHY
handling from direct phylib access to using phylink instead.
Although this driver is quite old, there are still some users out there,
running an upstream kernel. The development
Add documentation to 'papr_hcalls.rst' describing the
input, output and return values of the H_HTM hcall as
per the internal specification.
Signed-off-by: Madhavan Srinivasan
---
Changelog v2:
- No changes
Changelog v1:
- Updated commit message to include htmdump folder files
Documentation/arc
This patch adds debugfs interface to export Hardware Trace Macro (HTM)
function data in a LPAR. New hypervisor call "H_HTM" has been
defined to setup, configure, control and dump the HTM data.
This patch supports only dumping of HTM data in a LPAR.
New debugfs folder called "htmdump" has been added
Define macros and wrapper functions to handle
H_HTM (Hardware Trace Macro) hypervisor call.
H_HTM is new HCALL added to export data from
Hardware Trace Macro (HTM) function.
Signed-off-by: Madhavan Srinivasan
---
Changelog v2:
- No changes
Changelog v1:
- No changes
arch/powerpc/include/asm/hvc
Hi Haren,
One query below about the of_node refcounting.
Haren Myneni writes:
> In the powerpc-pseries specific implementation, the IO hotplug
> event is handled in the user space (drmgr tool). For the DLPAR
> IO ADD, the corresponding device tree nodes and properties will
> be added to the devi
Le 28/08/2024 à 08:50, Luming Yu a écrit :
On Wed, Aug 28, 2024 at 07:46:52AM +0200, Christophe Leroy wrote:
Hi,
Le 28/08/2024 à 05:17, 虞陆铭 a écrit :
Hi,
it appears the little feature might require a little bit more work to find its
value of the patch.
Using the following debug module ,
On 2024-08-28 08:10, Christoph Hellwig wrote:
> --- a/drivers/xen/Kconfig
> +++ b/drivers/xen/Kconfig
> @@ -177,8 +177,8 @@ config XEN_GRANT_DMA_ALLOC
>
> config SWIOTLB_XEN
> def_bool y
> + depends on ARCH_DMA_OPS
Rename to ARCH_HAS_DMA_OPS in v2 is missing here
> depends on X
Add a selftest for MAP_BELOW_HINT that maps until it runs out of space
below the hint address.
Signed-off-by: Charlie Jenkins
---
tools/testing/selftests/mm/Makefile | 1 +
tools/testing/selftests/mm/map_below_hint.c | 29 +
2 files changed, 30 insertions(+)
Add support for MAP_BELOW_HINT to mmap by restricting high_limit to addr
when the flag is enabled.
Signed-off-by: Charlie Jenkins
---
arch/sparc/kernel/sys_sparc_64.c | 8
1 file changed, 8 insertions(+)
diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
i
Add support for MAP_BELOW_HINT to mmap by restricting high_limit to addr
when the flag is enabled.
Signed-off-by: Charlie Jenkins
---
arch/sh/mm/mmap.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c
index bee329d4149a..867f6598b7d0 100644
--
Add support for MAP_BELOW_HINT to mmap by restricting high_limit to addr
when the flag is enabled.
Signed-off-by: Charlie Jenkins
---
arch/s390/mm/mmap.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index 206756946589..29e20351ca85 100
Add support for MAP_BELOW_HINT to mmap by restricting high_limit to addr
when the flag is enabled.
Signed-off-by: Charlie Jenkins
---
arch/parisc/include/uapi/asm/mman.h | 1 +
arch/parisc/kernel/sys_parisc.c | 9 +
tools/arch/parisc/include/uapi/asm/mman.h | 1 +
3 files
Add support for MAP_BELOW_HINT to mmap by restricting high_limit to addr
when the flag is enabled.
Signed-off-by: Charlie Jenkins
---
arch/mips/mm/mmap.c | 9 +
1 file changed, 9 insertions(+)
diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c
index 7e11d7b58761..1595fda284cd 100644
Add support for MAP_BELOW_HINT to mmap by restricting high_limit to addr
when the flag is enabled.
Signed-off-by: Charlie Jenkins
---
arch/arm/mm/mmap.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c
index d65d0e6ed10a..fa0c79447b78 100644
Add support for MAP_BELOW_HINT to mmap by restricting high_limit to
addr when the flag is enabled.
Signed-off-by: Charlie Jenkins
---
arch/x86/kernel/sys_x86_64.c | 25 ++---
1 file changed, 22 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x8
Add support for MAP_BELOW_HINT to mmap by restricting high_limit to addr
when the flag is enabled.
Signed-off-by: Charlie Jenkins
---
arch/loongarch/mm/mmap.c | 11 +++
1 file changed, 11 insertions(+)
diff --git a/arch/loongarch/mm/mmap.c b/arch/loongarch/mm/mmap.c
index 889030985135..
Add support for MAP_BELOW_HINT to arch_get_mmap_base() and
arch_get_mmap_end().
Signed-off-by: Charlie Jenkins
---
arch/powerpc/include/asm/task_size_64.h | 36 +++--
1 file changed, 30 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/include/asm/task_size_64.
Add support for MAP_BELOW_HINT to arch_get_mmap_base() and
arch_get_mmap_end().
Signed-off-by: Charlie Jenkins
---
arch/arm64/include/asm/processor.h | 34 +-
1 file changed, 29 insertions(+), 5 deletions(-)
diff --git a/arch/arm64/include/asm/processor.h
b/arch
When adding support for MAP_BELOW_HINT, the riscv implementation becomes
identical to the default implementation, so arch_get_mmap_base() and
arch_get_mmap_end() can be removed.
Signed-off-by: Charlie Jenkins
---
arch/riscv/include/asm/processor.h | 10 --
1 file changed, 10 deletions(-)
Make the generic implementation of arch_get_mmap_base() and
arch_get_mmap_end() support MAP_BELOW_HINT.
Signed-off-by: Charlie Jenkins
---
include/linux/sched/mm.h | 34 --
1 file changed, 32 insertions(+), 2 deletions(-)
diff --git a/include/linux/sched/mm.h b/i
The flag and len param is required in arch_get_mmap_base() to implement
MAP_BELOW_HINT.
Signed-off-by: Charlie Jenkins
---
arch/arm64/include/asm/processor.h | 2 +-
arch/powerpc/include/asm/task_size_64.h | 2 +-
arch/riscv/include/asm/processor.h | 2 +-
fs/hugetlbfs/inode.c
The hint address should not forcefully restrict the addresses returned
by mmap as this causes mmap to report ENOMEM when there is memory still
available.
Signed-off-by: Charlie Jenkins
Fixes: b5b4287accd7 ("riscv: mm: Use hint address in mmap if available")
Fixes: add2cc6b6515 ("RISC-V: mm: Restr
Some applications rely on placing data in free bits addresses allocated
by mmap. Various architectures (eg. x86, arm64, powerpc) restrict the
address returned by mmap to be less than the maximum address space,
unless the hint address is greater than this value.
To make this behavior explicit and m
Some applications rely on placing data in free bits addresses allocated
by mmap. Various architectures (eg. x86, arm64, powerpc) restrict the
address returned by mmap to be less than the maximum address space,
unless the hint address is greater than this value.
On arm64 this barrier is at 52 bits
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