This patch collects all programs in an object file into an array of
'struct bpf_program' for further processing. That structure is for
representing each eBPF program. 'bpf_prog' should be a better name, but
it has been used by linux/filter.h. Although it is a kernel space name,
I still prefer to
This patch introduces bpf.c and bpf.h, which hold common functions
issuing bpf syscall. The goal of these two files is to hide syscall
completly from user. Note that bpf.c and bpf.h only deal with kernel
interface. Things like structure of 'map' section in the ELF object is
not cared by of
This patch collects symbols section. This section is useful when
linking ELF maps.
Signed-off-by: Wang Nan
Acked-by: Alexei Starovoitov
---
tools/lib/bpf/libbpf.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index
bpf_load_program() can be used to load bpf program into kernel. To make
loading faster, first try to load without logbuf. Try again with logbuf
if the first try failed.
Signed-off-by: Wang Nan
Acked-by: Alexei Starovoitov
---
tools/lib/bpf/bpf.c | 34 ++
In this patch, eBPF API is checked by compiling a c source file which
uses fields in bpf_attr which will be used by libbpf.
Signed-off-by: Wang Nan
Acked-by: Alexei Starovoitov
---
tools/build/Makefile.feature | 6 --
tools/build/feature/Makefile | 6 +-
This patch creates maps based on 'map' section in object file using
bpf_create_map(), and stores the fds into an array in
'struct bpf_object'.
Previous patches parse ELF object file and collecte required data, but
doesn't play with kernel. They belong to 'opening' phase. This patch is
the first
This patch records the indics of instructions which are needed to be
relocated. Those information are saved in 'reloc_desc' field in
'struct bpf_program'. In loading phase (this patch takes effect in
opening phase), the collected instructions will be replaced by
map loading instructions.
Since we
If an eBPF program accesses a map, LLVM generates a load instruction
which loads an absolute address into a register, like this:
ld_64 r1,
...
call2
That ld_64 instruction will be recorded in relocation section.
To enable the usage of that map, relocation must be done by replacing
This patch collects relocation sections into 'struct object'.
Such sections are used for connecting maps to bpf programs.
'reloc' field in 'struct bpf_object' is introduced for storing
such informations.
This patch simply store the data into 'reloc' field. Following
patch will parse them to know
This patch defines basic interface of libbpf. 'struct bpf_object' will
be the handler of each object file. Its internal structure is hide to
user. eBPF object files are compiled by LLVM as ELF format. In this
patch, libelf is used to open those files, read EHDR and do basic
validation according to
This patch enables passing source files to --event directly using:
# perf record --event bpf-file.c command
This patch does following works:
1) 'struct bpf_param' is introduced to store compiler related options;
2) bpf__compile() is introduced for compiling source code by calling
clang
By introducing new rules in tools/perf/util/parse-events.[ly], this
patch enables 'perf record --event bpf_file.o' to select events by
an eBPF object file. It calls parse_events_load_bpf() to load that
file, which uses bpf__prepare_load() and finally calls
bpf_object__open() for the object files.
To prevent caller from creating additional structures to hold
pointers of 'struct bpf_object', this patch link all such
structures onto a list (hidden to user). bpf_object__for_each() is
introduced to allow users iterate over each objects.
bpf_object__for_each() is safe even user close the object
By adding libbpf into perf's Makefile, this patch enables perf to
build libbpf during building if libelf is found and neither NO_LIBELF
nor NO_LIBBPF is set. The newly introduced code is similar to libapi
and libtraceevent building in Makefile.perf.
MANIFEST is also updated for 'make
This patch introduces accessors for user of libbpf to retrive section
name and fd of a opened/loaded eBPF program. 'struct bpf_prog_handler'
is used for that purpose. Accessors of programs section name and file
descriptor are provided. Set/get private data are also impelmented.
Signed-off-by:
This patch add an accessor which allows caller to get count of programs
in an object file.
Signed-off-by: Wang Nan
Acked-by: Alexei Starovoitov
---
tools/lib/bpf/libbpf.c | 9 +
tools/lib/bpf/libbpf.h | 3 +++
2 files changed, 12 insertions(+)
diff --git a/tools/lib/bpf/libbpf.c
In this patch, kprobe points are created using add_perf_probe_events.
Since all events are already grouped together in an array, calling
add_perf_probe_events() once creates all of them.
probe_conf.max_probes is set to MAX_PROBES to support glob matching.
Signed-off-by: Wang Nan
---
perf_bpf_config() is added to parse 'bpf' section in perf config file.
Following is an example:
[bpf]
clang-path = /llvm/bin/x86_64-linux-clang"
llc-path = /llvm/bin/x86_64-linux-llc"
clang-opt = "-nostdinc -isystem /llvm/lib/clang/include
-I/kernel/arch/x86/include ..."
llc-opt =
- On Jun 8, 2015, at 8:55 AM, Peter Zijlstra pet...@infradead.org wrote:
> On Fri, 2015-06-05 at 13:23 +, Mathieu Desnoyers wrote:
>> sched_wakeup: when try_to_wake_up{,_local} is called in the waker.
>> sched_activate_task: when the wakee is marked runnable.
>> sched_switch: when
Although previous patch allows setting BPF compiler related options in
perfconfig, on some ad-hoc situation it still requires passing options
through cmdline. This patch introduces 4 options to 'perf record' for
this propose: --clang-path, --clang-opt, --llc-path and --llc-opt.
Signed-off-by:
> On Sun, Jun 7, 2015 at 10:32 AM, wrote:
>>> 2015-06-05 5:53 GMT+09:00 :
> Hi Yaniv,
>
> 2015-06-03 18:37 GMT+09:00 Yaniv Gardi :
>> @@ -321,7 +313,22 @@ static int ufshcd_pltfrm_probe(struct
>> platform_device *pdev)
>> goto out;
>> }
>>
This patch utilizes bpf_load_object() provided by libbpf to load all
objects into kernel.
Signed-off-by: Wang Nan
---
tools/perf/builtin-record.c | 12
tools/perf/util/bpf-loader.c | 19 +++
tools/perf/util/bpf-loader.h | 2 ++
3 files changed, 33 insertions(+)
This patch adds a bpf_fd field to 'struct evsel' then introduces method
to config it. In bpf-loader, a bpf__for_each_program() function is added.
Which calls the callback function for each eBPF programs with their event
structure and file descriptors. In evlist.c, perf_evlist__add_bpf()
is added
This patch drops struct __event_package structure. Instead, it adds
trace_probe_event into 'struct perf_probe_event'.
trace_probe_event information give further patches a chance to access
actual probe points and actual arguments. Using them, bpf_loader will
be able to attach one bpf program to
This patch parses section name of each program, and creates
corresponding 'struct perf_probe_event' structure.
parse_perf_probe_command() is used to do the main parsing works.
Parsing result is stored into a global array. This is because
add_perf_probe_events() is non-reentrantable. In following
In this patch PERF_EVENT_IOC_SET_BPF ioctl is used to attach eBPF
program to a newly created perf event. The file descriptor of the
eBPF program is passed to perf record using previous patches, and
stored into evsel->bpf_fd.
It is possible that different perf event are created for one kprobe
This patch utilizes previous introduced bpf_load_program to load
programs in the ELF file into kernel. Result is stored in 'fd' field
in 'struct bpf_program'.
During loading, it allocs a log buffer and free it before return.
Note that that buffer is not passed to bpf_load_program() if the first
By libbpf_set_print(), users of libbpf are allowed to register he/she
own debug, info and warning printing functions. Libbpf will use those
functions to print messages. If not provided, default info and warning
printing functions are fprintf(stderr, ...); default debug printing
is NULL.
This API
This is the 6th version which tries to introduce eBPF programs to perf.
It enables 'perf record' to filter events using eBPF programs like:
# perf record --event bpf-file.c sleep 1
and
# perf record --event bpf-file.o sleep 1
This patch series is based on tip/perf/core (a3d8654).
Compared
Add support for LG LG4573 480x800 4,3" panel. the LG4573
is used on the LG LCD LB043WV2-SD01, an industrial 4.3" TFT
panel with SPI control interface.
Signed-off-by: Heiko Schocher
---
Changes in v2:
- add comments from Thierry Reding:
- fix some spelling issues
- remove "power-on-delay"
On Tue, Jun 09, 2015 at 03:19:32PM +1000, Stephen Rothwell wrote:
> Hi Herbert,
>
> On Tue, 9 Jun 2015 12:46:46 +0800 Herbert Xu
> wrote:
> >
> > On Mon, Jun 08, 2015 at 09:31:54PM -0700, Guenter Roeck wrote:
> > >
> > > nios2 still fails to build with
> > >
> > > ERROR: "get_cycles"
Check endianess according to EHDR. Code is taken from
tools/perf/util/symbol-elf.c.
Libbpf doesn't magically convert missmatched endianess. Even if we swap
eBPF instructions to correct byte order, we are unable to deal with
endianess in code logical generated by LLVM.
Therefore, libbpf should
kmod 21 is out:
ftp://ftp.kernel.org/pub/linux/utils/kernel/kmod/kmod-21.tar.xz
ftp://ftp.kernel.org/pub/linux/utils/kernel/kmod/kmod-21.tar.sign
Small release with just 3 changes worth mentioning. From the NEWS file:
- New features:
- kmod tool started to learn the
On 08.06.2015, Heinz Diehl wrote:
> > This change has been applied between v2.24 and v2.24.1 of util-linux,
> > and not yet fixed in the mainline.
> Ok, I'll try to identify and revert this commit in the meantime.
The patch doesn't revert cleanly. Is there a workaround I could use
until the
Thomas Gleixner wrote:
> It does. Depending on when you enqueue the timer because the thing is
> calculated from the delta (expires - jiffies).
Ah, right. If slack > 0, the slack amount is absolute and the rounding
will be consistent.
But if slack < 0, which is the default, it's a percentage of
Hi greg,
>How did you ever trigger this error case?
When try to register the same class twice.
>I don't like mucking about in the root of the kobject name structure, as who
>knows what is really happening there. Isn't there some other "better" way to
>resolve this?
I try to use below patch
Return error when inserting a new IOMMU which doesn't support posted
interrupts if posted interrupts are already enabled.
Signed-off-by: Feng Wu
Reviewed-by: Thomas Gleixner
Acked-by: Joerg Roedel
---
drivers/iommu/intel_irq_remapping.c | 3 +++
1 file changed, 3 insertions(+)
diff --git
When the interrupt is configured in posted mode, the destination of
the interrupt is set in the Posted-Interrupts Descriptor and the
migration of these interrupts happens during vCPU scheduling.
We still update the cached irte, which will be used when changing back
to remapping mode, but we avoid
Add a new field to struct irq_2_iommu, which captures whether the
associated IRTE is in posted mode or remapped mode. We update this
field when the IRTE is written into the table.
Suggested-by: Thomas Gleixner
Signed-off-by: Feng Wu
Reviewed-by: Thomas Gleixner
Acked-by: Joerg Roedel
---
Add a new member 'capability' to struct irq_remap_ops for storing
information about available capabilities such as VT-d
Posted-Interrupts.
Signed-off-by: Feng Wu
Reviewed-by: Jiang Liu
Reviewed-by: Thomas Gleixner
Acked-by: Joerg Roedel
---
arch/x86/include/asm/irq_remapping.h | 4
Add helper function to detect VT-d Posted-Interrupts capability.
Signed-off-by: Feng Wu
Reviewed-by: Jiang Liu
Acked-by: David Woodhouse
Reviewed-by: Thomas Gleixner
Acked-by: Joerg Roedel
---
include/linux/intel-iommu.h | 1 +
1 file changed, 1 insertion(+)
diff --git
Interrupt chip callback to set the VCPU affinity for posted interrupts.
[ tglx: Use the helper function to copy from the remap irte instead of
open coding it. Massage the comment as well ]
Signed-off-by: Feng Wu
Reviewed-by: Jiang Liu
Acked-by: David Woodhouse
Reviewed-by: Thomas
Set Posted-Interrupts capability for Intel iommu when Interrupt
Remapping is enabled, clear it when disabled.
Signed-off-by: Feng Wu
Reviewed-by: Thomas Gleixner
Acked-by: Joerg Roedel
---
drivers/iommu/intel_irq_remapping.c | 30 ++
drivers/iommu/irq_remapping.c
From: Thomas Gleixner
The IRTE (Interrupt Remapping Table Entry) is either an entry for
remapped or for posted interrupts. The hardware distiguishes between
remapped and posted entries by bit 15 in the low 64 bit of the
IRTE. If cleared the entry is remapped, if set it's posted.
The entries
From: Thomas Gleixner
Instead of open coding, provide a helper function to copy the shared
irte fields.
Signed-off-by: Thomas Gleixner
---
include/linux/dmar.h | 12
1 file changed, 12 insertions(+)
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 0dbcabc..e9bc929
Add a new interface irq_remapping_cap() to detect whether irq
remapping supports new features, such as VT-d Posted-Interrupts.
Export the function, so that KVM code can check this and use this
mechanism properly.
Signed-off-by: Feng Wu
Reviewed-by: Jiang Liu
Reviewed-by: Thomas Gleixner
VT-d Posted-Interrupts is an enhancement to CPU side Posted-Interrupt.
With VT-d Posted-Interrupts enabled, external interrupts from
direct-assigned devices can be delivered to guests without VMM
intervention when guest is running in non-root mode.
You can find the VT-d Posted-Interrtups Spec. in
cc'ing Hans and quoting whole message.
Hans, can you please review this one?
Thanks.
On Fri, Jun 05, 2015 at 11:32:28AM +0530, Suneel Garapati wrote:
> Adds support for Ceva sata host controller on Xilinx
> Zynq UltraScale+ MPSoC.
>
> Signed-off-by: Suneel Garapati
> ---
> Changes v2
> -
Hi Herbert,
On Tue, 9 Jun 2015 12:46:46 +0800 Herbert Xu
wrote:
>
> On Mon, Jun 08, 2015 at 09:31:54PM -0700, Guenter Roeck wrote:
> >
> > nios2 still fails to build with
> >
> > ERROR: "get_cycles" [crypto/jitterentropy.ko] undefined!
>
> It's the only arch that doesn't inline get_cycles
On Tue, May 26, 2015 at 7:53 PM, Xiao Guangrong
wrote:
>
>
> On 05/26/2015 10:48 PM, Paolo Bonzini wrote:
>>
>>
>>
>> On 26/05/2015 16:45, Edward Cree wrote:
>
> This breaks older compilers that can't initialize anon structures.
>
> How old ? Even gcc 3.1 says you can use unnamed
On Fri, Jun 05, 2015 at 04:35:25PM +1000, Alexey Kardashevskiy wrote:
> The existing implementation accounts the whole DMA window in
> the locked_vm counter. This is going to be worse with multiple
> containers and huge DMA windows. Also, real-time accounting would requite
> additional tracking of
On Fri, Jun 05, 2015 at 04:35:01PM +1000, Alexey Kardashevskiy wrote:
> There moves locked pages accounting to helpers.
> Later they will be reused for Dynamic DMA windows (DDW).
>
> This reworks debug messages to show the current value and the limit.
>
> This stores the locked pages number in
On Fri, Jun 05, 2015 at 04:35:18PM +1000, Alexey Kardashevskiy wrote:
> This is a part of moving DMA window programming to an iommu_ops
> callback. pnv_pci_ioda2_set_window() takes an iommu_table_group as
> a first parameter (not pnv_ioda_pe) as it is going to be used as
> a callback for VFIO DDW
On Fri, Jun 05, 2015 at 04:35:19PM +1000, Alexey Kardashevskiy wrote:
> TCE tables might get too big in case of 4K IOMMU pages and DDW enabled
> on huge guests (hundreds of GB of RAM) so the kernel might be unable to
> allocate contiguous chunk of physical memory to store the TCE table.
>
> To
On Fri, Jun 05, 2015 at 04:35:24PM +1000, Alexey Kardashevskiy wrote:
> We are adding support for DMA memory pre-registration to be used in
> conjunction with VFIO. The idea is that the userspace which is going to
> run a guest may want to pre-register a user space memory region so
> it all gets
Hello, Aleksa.
On Sat, Jun 06, 2015 at 10:02:18AM +1000, Aleksa Sarai wrote:
...
> +/*
> + * Lockless hierarchical accounting (with enforceable limits) derived from
> + * mm/page_counter.c. Original copyright notice from page_counter code:
> + *
> + *
On Mon, Jun 08, 2015 at 09:31:54PM -0700, Guenter Roeck wrote:
>
> nios2 still fails to build with
>
> ERROR: "get_cycles" [crypto/jitterentropy.ko] undefined!
It's the only arch that doesn't inline get_cycles and doesn't
export it.
---8<---
nios2 is the only architecture that does not inline
Fixed a warning, else is not generally useful after a break or return.
Signed-off-by: Nizam Haider
---
drivers/staging/rts5208/xd.c |3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/rts5208/xd.c b/drivers/staging/rts5208/xd.c
index 8fd108e..10fea7b
On Fri, 2015-06-05 at 15:59 +0200, Thomas Gleixner wrote:
> On Tue, 19 May 2015, Davidlohr Bueso wrote:
> >
> > +/*
> > + * Lockless alternative to rt_mutex_has_waiters() as we do not need the
> > + * wait_lock to check if we are in, for instance, a transitional state
> > + * after calling
Hello, Aleksa.
Looks pretty good to me in general. Some minor comments below.
On Sat, Jun 06, 2015 at 10:02:17AM +1000, Aleksa Sarai wrote:
> diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
> index a593e29..17d0046 100644
> --- a/include/linux/cgroup.h
> +++
On 06/08/2015 08:59 PM, Fu Wei wrote:
Hi Guenter,
On 9 June 2015 at 02:26, Guenter Roeck wrote:
On 06/08/2015 09:05 AM, Fu Wei wrote:
Hi Gurnter
On 3 June 2015 at 01:07, Guenter Roeck wrote:
On 06/02/2015 09:55 AM, Fu Wei wrote:
Hi Timur,
Thanks , feedback inline
On 2 June 2015 at
Hi Dann,
On Mon, Jun 8, 2015 at 8:44 PM, Dann Frazier wrote:
> On Tue, Jun 2, 2015 at 1:19 PM, Tai Nguyen wrote:
>> This patch adds syscon poweroff device node to support poweroff feature
>> on APM X-Gene Mustang platform
>
> hey Tai,
> The reboot changes work just fine for me, but poweroff
On 06/08/2015 07:08 PM, Stephan Mueller wrote:
Hi,
I performed measurements of the upper and lower boundary of the minimum and
Shannon entropy for the RNG before the patch and after the patch. The values
are very similar which demonstrates that the change does not affect the
cryptographic
From: Harisangam Sharvari
The unnecessary equality checks for bool variable are removed in rxtx.c.
These changes were detected with the help of coccinelle tool
Signed-off-by: Harisangam Sharvari
---
drivers/staging/vt6655/rxtx.c |8
1 file changed, 4 insertions(+), 4 deletions(-)
>From b848495d2c987e960d1f7794966d82c05fcefc6d Mon Sep 17 00:00:00 2001
From: Tejun Heo
Date: Tue, 9 Jun 2015 13:19:40 +0900
blkcg performs several allocations to track IOs per cgroup and enforce
resource control. Most of these allocations are performed lazily on
demand in the IO path and thus
On 06/08/2015 02:42 PM, Russell King - ARM Linux wrote:
On Mon, Jun 01, 2015 at 10:51:06AM +0530, Bhuvanchandra DV wrote:
+/*
+ * CTS/RTS can _only_ be handled
+ * automatically by the hardware.
+ */
That's really not acceptable. You need to do something here so that you
can
Enable CONFIG_SND_SOC_ODROIDX2 and CONFIG_SND_SIMPLE_CARD to enable
sound on Odroid-XU3 board using the max98090 audio codec.
Signed-off-by: Anand Moon
Reviewed-by: Lukasz Majewski
---
Changes v2: Fixed the commit log.
Signed-off-by: Anand Moon
---
arch/arm/configs/exynos_defconfig | 2 ++
1
On 05/28/2015 01:05 AM, Paolo Bonzini wrote:
This is now very simple to do. The only interesting part is a simple
trick to find the right memslot in gfn_to_rmap, retrieving the address
space from the spte role word. The same trick is used in the auditing
code.
The comment on top of union
Hi Guenter,
On 9 June 2015 at 02:26, Guenter Roeck wrote:
> On 06/08/2015 09:05 AM, Fu Wei wrote:
>>
>> Hi Gurnter
>>
>> On 3 June 2015 at 01:07, Guenter Roeck wrote:
>>>
>>> On 06/02/2015 09:55 AM, Fu Wei wrote:
Hi Timur,
Thanks , feedback inline
On 2 June
On (06/08/15 13:55), Andrew Morton wrote:
[..]
> > zs_destroy_pool()->destroy_handle_cache() invoked from
> > zs_create_pool() can pass a NULL ->handle_cachep pointer
> > to kmem_cache_destroy(), which will dereference it.
> >
>
> That's slightly lacking in details (under what circumstances will
This refactors the fw_event code to use the new refcount.
Signed-off-by: Calvin Owens
---
drivers/scsi/mpt2sas/mpt2sas_scsih.c | 20 +---
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c
b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
This patch refactors the code in the driver to use the new reference
count on the sas_device struct.
Signed-off-by: Calvin Owens
---
drivers/scsi/mpt2sas/mpt2sas_base.h | 4 +-
drivers/scsi/mpt2sas/mpt2sas_scsih.c | 329 ---
We cannot iterate over the list without holding a lock for the entire
duration, or we risk corrupting random memory if items are added or
deleted as we iterate.
This refactors code such that it always holds the lock when iterating
on or accessing the sas_device_list.
Signed-off-by: Calvin Owens
These objects can be referenced concurrently throughout the driver, we
need a way to make sure threads can't delete them out from under each
other.
Signed-off-by: Calvin Owens
---
drivers/scsi/mpt2sas/mpt2sas_base.h | 16
1 file changed, 16 insertions(+)
diff --git
Since the fw_event deletes itself from the list, cleanup_queue() can
walk onto garbage pointers or walk off into freed memory.
This refactors the code in _scsih_fw_event_cleanup_queue() to not
iterate over the fw_event_list without a lock.
Signed-off-by: Calvin Owens
---
The fw_event_work struct is concurrently referenced at shutdown, so
add a refcount to protect it.
Signed-off-by: Calvin Owens
---
drivers/scsi/mpt2sas/mpt2sas_scsih.c | 28
1 file changed, 28 insertions(+)
diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c
Hello all,
This patchset attempts to address problems we've been having with
panics due to memory corruption from the mpt2sas driver.
I will provide a similar set of fixes for mpt3sas, since we see
similar issues there as well. "Porting" this to mpt3sas will be
trivial since the part of the
On 05/28/2015 01:05 AM, Paolo Bonzini wrote:
This patch has no semantic change, but it prepares for the introduction
of a second address space for system management mode.
A new function x86_set_memory_region (and the "slots_lock taken"
counterpart __x86_set_memory_region) is introduced in
On Tue, Jun 2, 2015 at 1:19 PM, Tai Nguyen wrote:
> This patch adds syscon poweroff device node to support poweroff feature
> on APM X-Gene Mustang platform
hey Tai,
The reboot changes work just fine for me, but poweroff does not:
[ OK ] Reached target Final Step.
Starting
On 05/28/2015 01:05 AM, Paolo Bonzini wrote:
We need to hide SMRAM from guests not running in SMM. Therefore,
all uses of kvm_read_guest* and kvm_write_guest* must be changed to
check whether the VCPU is in system management mode and use a
different set of memslots. Switch from kvm_* to the
On 06/09/2015 07:30 AM, Andrew Morton wrote:
On Mon, 8 Jun 2015 14:44:41 +0800 Zhu Guihua wrote:
When hot add two nodes continuously, we found the vmemmap region info is a
bit messed. The last region of node 2 is printed when node 3 hot added,
like the following:
Initmem setup node 2 [mem
Currently, /proc//map_files/ is restricted to CAP_SYS_ADMIN, and
is only exposed if CONFIG_CHECKPOINT_RESTORE is set.
This interface very useful because it allows userspace to stat()
deleted files that are still mapped by some process, which enables a
much quicker and more accurate answer to the
On Fri, Jun 05, 2015 at 04:35:09PM +1000, Alexey Kardashevskiy wrote:
> So far one TCE table could only be used by one IOMMU group. However
> IODA2 hardware allows programming the same TCE table address to
> multiple PE allowing sharing tables.
>
> This replaces a single pointer to a group in a
On 05/28/2015 01:05 AM, Paolo Bonzini wrote:
This is always available (with one exception in the auditing code).
Later we will also use the role to look up the right memslots array.
return;
@@ -191,11 +191,15 @@ static void audit_write_protection(struct kvm *kvm,
Hi,
This patch set introduces a new instruction support on AMD Carrizo (Family
15h, Model 60h-6fh). It adds mwaitx delay function with a configurable
timer.
Andy and Boris provide a suggestion which use mwaitx on delay method.
Some discussions of the background, please see:
On Mon, Jun 8, 2015 at 10:27 PM, Punnaiah Choudary Kalluri
wrote:
> Added the basic driver for zynqmp dma engine used in Zynq
> UltraScale+ MPSoC. The initial release of this driver supports
> only memory to memory transfers.
>
> Signed-off-by: Punnaiah Choudary Kalluri
> ---
>
This patch adds a description in the kerenel parameters documentation
for "delay=" method. The default case is TSC delay.
Signed-off-by: Huang Rui
---
Documentation/kernel-parameters.txt |7 +++
1 file changed, 7 insertions(+)
diff --git a/Documentation/kernel-parameters.txt
On 05/28/2015 01:05 AM, Paolo Bonzini wrote:
/*
@@ -772,6 +776,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
struct kvm_memory_slot *slot;
struct kvm_memory_slot old, new;
struct kvm_memslots *slots = NULL, *old_memslots;
+ int as_id, id;
enum
Hi Stephan,
On Tue, 09 Jun 2015 04:08:49 +0200 Stephan Mueller wrote:
>
> Replace the global -O0 compiler flag from the Makefile with GCC
> pragmas to mark only the functions required to be compiled without
> optimizations.
>
> This patch also adds a comment describing the rationale for the
>
This patch introduces a kernel parameter (delay), user is able to configure
it at boot loader to choose different types of delay method.
Default schema is to use TSC delay. This update can be more flexiable to
add new delay method.
Suggested-by: Suravee Suthikulanit
Signed-off-by: Huang Rui
MWAITX can enable a timer and a corresponding timer value specified in SW
P0 clocks. The SW P0 frequency is the same with TSC. The timer provides an
upper bound on how long the instruction waits before exiting.
The implementation of delay function in kernel can lerverage the timer of
MWAITX. This
On AMD Carrizo processors (Family 15h, Model 60h-6fh), there is a new
feature called MWAITT (Mwait with a timer) as an extension of
Monitor/Mwait.
MWAITT, another name is MWAITX (MWAIT with extensions), has a configurable
timer that causes MWAITX to exit on expiration.
Compared with
On Mon, Jun 08, 2015 at 02:22:06PM -0700, Greg Kroah-Hartman wrote:
> On Wed, Jun 03, 2015 at 03:43:23AM +0300, Laurent Pinchart wrote:
> > Hi Colin,
> >
> > Thank you for the patch.
> >
> > On Tuesday 02 June 2015 19:05:13 Colin King wrote:
> > > From: Colin Ian King
> > >
> > >
Hey, Vivek.
On Mon, Jun 08, 2015 at 06:29:04PM -0400, Vivek Goyal wrote:
...
> But above is not true for buffered writes, we will not associate io
> context. Instead only cgroup information will be sent down and io
> context of submitter will be used.
>
> So any thread which is forced to submit
Hi
On 9 June 2015 at 05:26, Krzysztof Kozlowski wrote:
> On 08.06.2015 02:03, Anand Moon wrote:
>> Enable CONFIG_LEDS_PWM amd CONFIG_LEDS_TRIGGER_HEARTBEAT for
>> Odroid-XU3 board.
>
> I am a little confused.
>
> This is v2.
>
> I found version 3, a little different:
>
On 06/08/2015 05:26 PM, Rasmus Villemoes wrote:
Part of the disassembly of do_blk_trace_setup:
231b: e8 00 00 00 00 callq 2320
231c: R_X86_64_PC32 strlen+0xfffc
2320: eb 0a jmp232c
2322:
Hey, Jeff.
On Mon, Jun 08, 2015 at 03:49:56PM -0400, Jeff Moyer wrote:
> Assuming you're ok with dropping patch 5, I'll review patches 6-8 once
I'll update it to use GPF_NOWAIT. Can't drop it easily as that would
complicate group lookup more complicated w/ pinning and all.
> they've been
On Mon, Jun 08, 2015 at 05:19:30PM -0400, Vivek Goyal wrote:
> Whatever we end up using, may be it is a good idea to use same policy
> for block group allocation too. Right now we use GFP_ATOMIC for blkcg
> allocation.
>
> So this will be equivalent of that when memory is low, we don't provide
>
Hey, Jeff.
On Mon, Jun 08, 2015 at 04:27:10PM -0400, Jeff Moyer wrote:
> >> Remove @gfp_mask from cfq_find_alloc_queue() and propagate the changes
> >> to its callers. This simplifies the function quite a bit and will
> >> help making async queues per-cfq_group.
> >
> > Sorry, I disagree with
On 06/09/2015 08:36 AM, David Matlack wrote:
On Sat, May 30, 2015 at 3:59 AM, Xiao Guangrong
wrote:
It walks all MTRRs and gets all the memory cache type setting for the
specified range also it checks if the range is fully covered by MTRRs
Signed-off-by: Xiao Guangrong
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