This patch adds DT binding for samsung ufs hci
Signed-off-by: Alim Akhtar
---
.../bindings/ufs/samsung,exynos-ufs.yaml | 91 +++
1 file changed, 91 insertions(+)
create mode 100644
Documentation/devicetree/bindings/ufs/samsung,exynos-ufs.yaml
diff --git a/Documentation/de
This patch-set introduces UFS (Universal Flash Storage) host controller support
for Samsung family SoC. Mostly, it consists of UFS PHY and host specific driver.
- Changes since v8
* fixed make dt_binding_check error as pointed by Rob
* Addressed review comments from Randy Dunlap
- Changes since v
This patch introduces Exynos UFS host controller driver,
which mainly handles vendor-specific operations including
link startup, power mode change and hibernation/unhibernation.
Reported-by: kbuild test robot
Reported-by: Julia Lawall
[robot: drivers/scsi/ufs/ufs-exynos.c:931:8-10:
WARNING: pos
This patch introduces Samsung UFS PHY driver. This driver
supports to deal with phy calibration and power control
according to UFS host driver's behavior.
Reviewed-by: Kiwoong Kim
Signed-off-by: Seungwon Jeon
Signed-off-by: Alim Akhtar
Cc: Kishon Vijay Abraham I
Tested-by: Paweł Chmiel
---
d
Adding dt node foe UFS and UFS-PHY for exynos7 SoC.
Signed-off-by: Alim Akhtar
Tested-by: Paweł Chmiel
---
.../boot/dts/exynos/exynos7-espresso.dts | 4 ++
arch/arm64/boot/dts/exynos/exynos7.dtsi | 43 ++-
2 files changed, 45 insertions(+), 2 deletions(-)
diff --git
From: Kiwoong Kim
Some controller like Exynos determines if FATAL ERROR (0x7)
in OCS field in UTRD occurs for values other than GOOD (0x0)
in STATUS field in response upiu as well as errors that a
host controller can't cover.
This patch is to prevent from reporting command results in
those cases.
On Tue, May 12, 2020 at 9:50 AM Thomas Gleixner wrote:
>
> Thomas Gleixner writes:
> > Andy Lutomirski writes:
> >> WARN_ON_ONCE(!on_thread_stack() && (regs->flags & X86_FLAGS_IF) &&
> >> preempt_count() == 0);
> >>
> >> IOW, the actual condition we want is that, if the idtenter_entry/exit
> >>
On Wed, May 13, 2020 at 5:11 PM Linus Torvalds
wrote:
>
> On Wed, May 13, 2020 at 4:36 PM Borislav Petkov wrote:
> >
> >
> > Looking at them, they do have an mb() too so how about this then
> > instead?
> >
> > #define prevent_tail_call_optimization()mb()
>
> Yeah, I think a full mb() is
Steven Rostedt writes:
> On Thu, 14 May 2020 02:12:21 +0200
> Thomas Gleixner wrote:
>
>> I should have thought about this before, so thanks to both of you for
>> making me look at it again for the very wrong reasons.
>>
>> Consider the patch dropped.
>
> I'm glad our incompetence could be of s
On Wed, May 13, 2020 at 06:39:03AM +0900, Akira Yokosawa wrote:
> From 96fa6680e3b990633ecbb6d11acf03a161b790bd Mon Sep 17 00:00:00 2001
> From: Akira Yokosawa
> Date: Sun, 10 May 2020 15:12:57 +0900
> Subject: [PATCH RESEND 3/4] Documentation/litmus-tests: Merge atomic's README
> into top-level
On 5/11/20 10:56 PM, Alan Maguire wrote:
printk supports multiple pointer object type specifiers (printing
netdev features etc). Extend this support using BTF to cover
arbitrary types. "%pT" specifies the typed format, and the pointer
argument is a "struct btf_ptr *" where struct btf_ptr is
- On May 12, 2020, at 9:51 PM, rostedt rost...@goodmis.org wrote:
> On Fri, 8 May 2020 17:39:00 -0700
> Andy Lutomirski wrote:
>
>> On Tue, May 5, 2020 at 7:15 AM Thomas Gleixner wrote:
>> >
>> > This is called from deep entry ASM in a situation where instrumentation
>> > will cause more ha
On Thu, 14 May 2020 02:12:21 +0200
Thomas Gleixner wrote:
> I should have thought about this before, so thanks to both of you for
> making me look at it again for the very wrong reasons.
>
> Consider the patch dropped.
I'm glad our incompetence could be of service to you :-/
-- Steve
Hi,
On Sat, May 9, 2020 at 6:49 AM Wei Li wrote:
>
> This patch set is to fix several issues of single-step debugging
> in kgdb/kdb on arm64.
>
> It seems that these issues have been shelved a very long time,
> but i still hope to solve them, as the single-step debugging
> is an useful feature.
>
On Wed, 2020-05-06 at 15:10 +0530, Sumit Garg wrote:
> Add MAINTAINERS entry for TEE based Trusted Keys framework.
>
> Signed-off-by: Sumit Garg
Acked-by: Jarkko Sakkinen
/Jarkko
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: 24085f70a6e1b0cb647ec92623284641d8270637
commit: def2fbffe62c00c330c7f41584a356001179c59c kconfig: allow symbols implied
by y to become m
date: 9 weeks ago
config: arm64-randconfig-r034-20200513 (attached
On Wed, 2020-05-06 at 15:10 +0530, Sumit Garg wrote:
> Update documentation for Trusted and Encrypted Keys with TEE as a new
> trust source. Following is brief description of updates:
>
> - Add a section to demostrate a list of supported devices along with
> their security properties/guarantees.
On Wed, 2020-05-06 at 15:10 +0530, Sumit Garg wrote:
> Add support for TEE based trusted keys where TEE provides the functionality
> to seal and unseal trusted keys using hardware unique key.
>
> Refer to Documentation/tee.txt for detailed information about TEE.
>
> Signed-off-by: Sumit Garg
Th
On Wed, 13 May 2020 04:19:25 PDT (-0700), Stephen Rothwell wrote:
Hi all,
Commit
e2d8d84b18c3 ("riscv: pgtable: Fix __kernel_map_pages build error if NOMMU")
is missing a Signed-off-by from its committer.
Thanks. I had to manually apply this and must have forgotten -s, it's fixed
now.
On Wed, 2020-05-06 at 15:10 +0530, Sumit Garg wrote:
> Current trusted keys framework is tightly coupled to use TPM device as
> an underlying implementation which makes it difficult for implementations
> like Trusted Execution Environment (TEE) etc. to provide trusked keys
> support in case platfor
Hi,
On Sat, May 9, 2020 at 6:49 AM Wei Li wrote:
>
> After fixing wrongly single-stepping into the irq handler, when we execute
> single-step in kdb/kgdb, we can see only the first step can work.
>
> Refer to the ARM Architecture Reference Manual (ARM DDI 0487E.a) D2.12,
> i think PSTATE.SS=1 sho
Hi,
On Sat, May 9, 2020 at 6:49 AM Wei Li wrote:
>
> After the single-step exception handling oops is fixed, when we execute
> single-step in kdb/kgdb, we may see it jumps to the irq_handler (where
> PSTATE.D is cleared) instead of the next instruction.
>
> Add the prepare and cleanup work for si
Hi,
On Sat, May 9, 2020 at 6:49 AM Wei Li wrote:
>
> PSTATE.I and PSTATE.D are very important for single-step working.
>
> Without disabling interrupt on local CPU, there is a chance of
> interrupt occurrence in the period of exception return and start of
> out-of-line single-step, that result in
Hi,
On Sat, May 9, 2020 at 6:49 AM Wei Li wrote:
>
> After entering kdb due to breakpoint, when we execute 'ss' or 'go' (will
> delay installing breakpoints, do single-step first), it won't work
> correctly, and it will enter kdb due to oops.
>
> It's because the reason gotten in kdb_stub() is no
On Thu, May 14, 2020 at 03:08:58AM +0300, Jarkko Sakkinen wrote:
> > >
> > > Signed-off-by: Gustavo A. R. Silva
> >
> > Reviewed-by: Kees Cook
>
> Thank you.
>
> I applied this patch, will include it to the next PR.
>
Awesome. :)
Thanks, Jarkko.
--
Gustavo
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: 24085f70a6e1b0cb647ec92623284641d8270637
commit: 5990cdee689c6885b27c6d969a3d58b09002b0bc lib/mpi: Fix building for
powerpc with clang
date: 3 weeks ago
config: powerpc-randconfig-r034-20200514 (attached a
On Wed, 13 May 2020 18:57:25 -0400 (EDT)
Mathieu Desnoyers wrote:
> - On May 5, 2020, at 9:16 AM, Thomas Gleixner t...@linutronix.de wrote:
>
> > This is completely overengineered and definitely not an interface which
> > should be made available to anything else than this particular MCE cas
Steven, Mathieu
(combo reply)
Steven Rostedt writes:
> On Wed, 13 May 2020 16:56:41 -0400 (EDT)
>> > + /* deal with pending signal delivery */
>> > + if (cached_flags & _TIF_SIGPENDING)
>> > + do_signal(regs);
>
> Looking deeper into this, it appears that do_si
- On May 5, 2020, at 9:16 AM, Thomas Gleixner t...@linutronix.de wrote:
> From: Peter Zijlstra
>
> A few exceptions (like #DB and #BP) can happen at any location in the code,
> this then means that tracers should treat events from these exceptions as
> NMI-like. The interrupted context could
PMCG node can have zero ID mapping if its overflow interrupt
is wire based. The code to parse PMCG node can not assume it will
have a single ID mapping.
Fixes: 24e516049360 ("ACPI/IORT: Add support for PMCG")
Reviewed-by: Hanjun Guo
Signed-off-by: Tuan Phan
---
v1 -> v2:
- Use pmcg node to detec
On Wed, May 13, 2020 at 4:36 PM Borislav Petkov wrote:
>
>
> Looking at them, they do have an mb() too so how about this then
> instead?
>
> #define prevent_tail_call_optimization()mb()
Yeah, I think a full mb() is likely safe, because that's pretty much
always going to be a real instruct
On Mon, 2020-05-11 at 22:24 -0700, Kees Cook wrote:
> On Fri, May 08, 2020 at 11:38:26AM -0500, Gustavo A. R. Silva wrote:
> > The current codebase makes use of the zero-length array language
> > extension to the C90 standard, but the preferred mechanism to declare
> > variable-length types such as
On Sun, 2020-05-10 at 18:44 +, Nikita Sobolev wrote:
> Hi, Jarkko Sakkinen, all!
>
> Thank you for your notes about commit and sorry for not copying the message
> to you!
It's not a biggie, no worries.
> There is definitely unwanted line of code in the commit.
> After deleting that one, intr
On Wed, May 13, 2020 at 4:21 PM Masami Hiramatsu wrote:
>
>
> For trace_kprobe.c current order (kernel -> user fallback) is preferred
> because it has another function dedicated for user memory.
Well, then it should just use the "strict" kernel-only one for the
non-user memory.
But yes, if there
On 5/14/20 1:28 AM, Al Viro wrote:
On Thu, May 14, 2020 at 12:36:28AM +0200, Daniel Borkmann wrote:
So on say s390 TASK_SIZE_USUALLy is (-PAGE_SIZE), which means we'd alway
try the user copy first, which seems odd.
I'd really like to here from the bpf folks what the expected use case
is here,
On Wed, 2020-05-13 at 16:34 -0700, Kees Cook wrote:
> On Wed, May 13, 2020 at 07:00:43PM -0400, Mimi Zohar wrote:
> > On Wed, 2020-05-13 at 15:48 -0700, Scott Branden wrote:
> > >
> > > On 2020-05-13 3:12 p.m., Mimi Zohar wrote:
> > > > On Wed, 2020-05-13 at 21:28 +, Luis Chamberlain wrote:
>
Dear friend,
Please kindly work with me in this transaction for you will not regret
it at all.
First of all, I contacted you for us to work in this transaction because
you are bearing the same last name identity with a deceased customer of
our bank, therefore I
can present you as the true n
Fix the following build failure generated with command
$ make CC=clang HOSTCC=clang -C tools/ perf:
util/intel-pt.c:1802:24: error: field 'br_stack' with variable sized type
'struct branch_stack' not at the end of a struct or class is a GNU extension
[-Werror,-Wgnu-variable-sized-type-not-at-en
- On May 5, 2020, at 9:16 AM, Thomas Gleixner t...@linutronix.de wrote:
> From: Peter Zijlstra
>
Patch title: singal -> signal.
> Convert #MC over to using task_work_add(); it will run the same code
> slightly later, on the return to user path of the same exception.
So I suspect that swit
- On May 5, 2020, at 9:16 AM, Thomas Gleixner t...@linutronix.de wrote:
[...]
> + * Split the recrursion counter in two to readily detect 'off' vs recursion.
recrursion -> recursion
> + */
> +#define LOCKDEP_RECURSION_BITS 16
> +#define LOCKDEP_OFF (1U << LOCKDEP_RECURSION_BITS
Hi,
On Sun, May 10, 2020 at 7:18 PM Wei Li wrote:
>
> 'KDBFLAGS' is an internal variable of kdb, it is combined by 'KDBDEBUG'
> and state flags. But the user can define an environment variable named
> 'KDBFLAGS' too, so let's make it undefinable to avoid confusion.
>
> Signed-off-by: Wei Li
> --
The systemd may be configured to mask ctrl-alt-del via "systemctl mask
ctrl-alt-del.target". As a result, the pv reboot would not work as signal
is ignored.
This patch always enables C_A_D before the call of ctrl_alt_del() in order
to force the reboot.
Reported-by: Rose Wang
Cc: Joe Jin
Cc: Bor
Le mardi 05 mai 2020 à 11:27 -0300, Ezequiel Garcia a écrit :
> On Tue, 2020-05-05 at 16:05 +0200, Tomasz Figa wrote:
> > On Tue, May 5, 2020 at 3:59 PM Ezequiel Garcia
> > wrote:
> > > On Tue, 2020-05-05 at 15:56 +0200, Tomasz Figa wrote:
> > > > Hi Ezequiel,
> > > >
> > > > On Tue, May 5, 2020
On Wed, May 13, 2020 at 04:13:53PM -0700, Linus Torvalds wrote:
> The check itself doesn't seem worth it. If your worry is that an empty
> asm() can be optimized away, then don't use an empty asm!
gcc guys said we should use that since the first attempt using
__attribute__((optimize("-fno-stack-p
On Wed, May 13, 2020 at 07:00:43PM -0400, Mimi Zohar wrote:
> On Wed, 2020-05-13 at 15:48 -0700, Scott Branden wrote:
> >
> > On 2020-05-13 3:12 p.m., Mimi Zohar wrote:
> > > On Wed, 2020-05-13 at 21:28 +, Luis Chamberlain wrote:
> > >> On Wed, May 13, 2020 at 05:20:14PM -0400, Mimi Zohar wrot
Fix kernel_read_file_from_fd() to avoid fdput() after a failed fdget().
fdput() doesn't do fput() on this file since FDPUT_FPUT isn't set
in fd.flags. Fix it anyway since failed fdget() doesn't require
a fdput().
This was introduced in a commit that added kernel_read_file_from_fd() as
a wrapper fo
Fix ksys_sync_file_range() to avoid fdput() after a failed fdget().
fdput() doesn't do fput() on this file since FDPUT_FPUT isn't set
in fd.flags.
Change it anyway since failed fdget() doesn't require a fdput(). Refine
the code path a bit for it to read more clearly.
Reference: 22f96b3808c1 ("fs:
While debugging an unrelated problem, I noticed these two cases fdput()
is called after failed fdget() while reviewing at all the fdget() and
fdput() paths in the kernel.
Changes since v2:
Patches 1&2 changed to get rid of goto.
Changes since v1:
Patch 1:
Changed to address review comments to r
- On May 5, 2020, at 9:16 AM, Thomas Gleixner t...@linutronix.de wrote:
> +#define arch_nmi_enter() \
[...] \
> + ___hcr = read_sysreg(hcr_el2); \
> + if (!(__
On Wed, May 13, 2020 at 11:37:16AM -0400, Stephen Smalley wrote:
> On Tue, May 5, 2020 at 11:33 AM Mickaël Salaün wrote:
> >
> > Enable to forbid access to files open with O_MAYEXEC. Thanks to the
> > noexec option from the underlying VFS mount, or to the file execute
> > permission, userspace ca
On Thu, May 14, 2020 at 12:36:28AM +0200, Daniel Borkmann wrote:
> > So on say s390 TASK_SIZE_USUALLy is (-PAGE_SIZE), which means we'd alway
> > try the user copy first, which seems odd.
> >
> > I'd really like to here from the bpf folks what the expected use case
> > is here, and if the typical
Casey Schaufler wrote:
> > - if (perm & ~KEY_NEED_ALL)
> > - return -EINVAL;
> > + switch (need_perm) {
> > + default:
> > + return -EACCES;
> ...
> Is the change from -EINVAL to -EACCES a bug fix?
> Does it introduce an incompatibility?
It shouldn't happen. All the ac
On Wed, 2020-05-13 at 15:50 -0700, Alexei Starovoitov wrote:
> On Wed, May 13, 2020 at 3:48 PM Joe Perches wrote:
> > On Wed, 2020-05-13 at 15:24 -0700, Alexei Starovoitov wrote:
> > > On Tue, May 12, 2020 at 06:56:38AM +0100, Alan Maguire wrote:
> > > > The printk family of functions support prin
On 5/14/20 1:03 AM, Linus Torvalds wrote:
On Wed, May 13, 2020 at 3:36 PM Daniel Borkmann wrote:
It's used for both.
Daniel, BPF real;ly needs to make up its mind about that.
You *cannot* use ti for both.
Yes, it happens to work on x86 and some other architectures.
But on other architectu
On Wed, May 13, 2020 at 11:42:29AM -0700, Paul E. McKenney wrote:
> On Wed, May 13, 2020 at 06:47:14PM +0200, Frederic Weisbecker wrote:
> > Not for merge.
> >
> > Make nocb toggable for a given CPU using:
> > /sys/devices/system/cpu/cpu*/hotplug/nocb
> >
> > This is only intended for those w
On Wed, May 13, 2020 at 4:04 PM Daniel Borkmann wrote:
>
> Aside from comments on list, the series looks reasonable to me. For BPF
> the bpf_probe_read() helper would be slightly penalized for probing user
> memory given we now test on copy_from_kernel_nofault() first and if that
> fails only then
On Thu, 14 May 2020 00:36:28 +0200
Daniel Borkmann wrote:
> On 5/13/20 9:28 PM, Christoph Hellwig wrote:
> > On Wed, May 13, 2020 at 12:11:27PM -0700, Linus Torvalds wrote:
> >> On Wed, May 13, 2020 at 9:01 AM Christoph Hellwig wrote:
> >>>
> >>> +static void bpf_strncpy(char *buf, long unsafe_a
On Wed, 2020-05-13 at 16:07 -0700, Alexei Starovoitov wrote:
> On Wed, May 13, 2020 at 4:05 PM Joe Perches wrote:
> > On Tue, 2020-05-12 at 06:56 +0100, Alan Maguire wrote:
> > > printk supports multiple pointer object type specifiers (printing
> > > netdev features etc). Extend this support usin
Hi,
On Thu, May 7, 2020 at 1:09 PM Douglas Anderson wrote:
>
> In order to make early kgdb work properly we need early_brk64() to be
> able to call into it. This is as easy as adding a call into
> call_break_hook() just like we do later in the normal brk_handler().
>
> Once we do this we can let
On Wed, 13 May 2020, Markus Elfring wrote:
> some developers care to improve the compliance with the current
> standard at various source code places, don't they?
>
This thread appears to be circular. Before I abandon it as folly, perhaps
you would answer one more question. Out of all of the s
On Fri, 2020-05-08 at 11:38 -0500, Gustavo A. R. Silva wrote:
> The current codebase makes use of the zero-length array language
> extension to the C90 standard, but the preferred mechanism to declare
> variable-length types such as these ones is a flexible array member[1][2],
> introduced in C99:
Paul Moore wrote:
> > + case KEY_NEED_VIEW: perm = KEY__VIEW; break;
> > + case KEY_NEED_READ: perm = KEY__READ; break;
> > + case KEY_NEED_WRITE:perm = KEY__WRITE; break;
> > + case KEY_NEED_SEARCH: perm = KEY__SEARCH; break;
> > +
On 5/13/20 2:30 PM, Brendan Higgins wrote:
> On Wed, May 13, 2020 at 8:18 AM Heikki Krogerus
> wrote:
>>
>> In the function kobject_cleanup(), kobject_del(kobj) is
>> called before the kobj->release(). That makes it possible to
>> release the parent of the kobject before the kobject itself.
>>
>>
On Wed, May 13, 2020 at 3:20 PM Borislav Petkov wrote:
>
> Linus, shout if you'd prefer only the last three commits there:
>
> 950a37078aa0 x86/build: Use $(CONFIG_SHELL)
> f670269a42bf x86: Fix early boot crash on gcc-10, next try
> 73da86741e7f x86/build: Check whether the compiler is sane
Do w
Stephen Smalley wrote:
> > (3) An override due to CAP_SYS_ADMIN.
>
> CAP_SYS_ADMIN should never skip SELinux checking. Even for Smack,
> there is a separate capability (CAP_MAC_ADMIN) for that purpose.
The LSM doesn't get consulted at the moment. With this patch, it will get
consulted.
> >
- On May 5, 2020, at 9:16 AM, Thomas Gleixner t...@linutronix.de wrote:
> Warnings, bugs and stack protection fails from noinstr sections, e.g. low
> level and early entry code, are likely to be fatal.
>
> Mark them as "safe" to be invoked from noinstr protected code to avoid
> annotating all
Hi,
On Tue, May 12, 2020 at 11:17 PM Will Deacon wrote:
>
> Hey Doug,
>
> On Tue, May 12, 2020 at 08:27:50AM -0700, Doug Anderson wrote:
> > On Tue, May 12, 2020 at 12:36 AM Will Deacon wrote:
> > > On Mon, May 11, 2020 at 03:45:02PM -0700, Doug Anderson wrote:
> > > > On Mon, May 11, 2020 at 7:
On Wed, 2020-05-06 at 09:39 -0700, Jordan Hand wrote:
> On 4/21/20 2:52 PM, Jarkko Sakkinen wrote:
> > Intel(R) SGX is a set of CPU instructions that can be used by applications
> > to set aside private regions of code and data. The code outside the enclave
> > is disallowed to access the memory in
On Thu, May 14, 2020 at 12:39:05AM +0300, Jarkko Sakkinen wrote:
> >
> > [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
> > [2] https://github.com/KSPP/linux/issues/21
> > [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour")
> > [4] https://github.com/KSPP/linux/issues/43
> >
>
On Wed, May 13, 2020 at 11:25:27AM -0700, Paul E. McKenney wrote:
> On Wed, May 13, 2020 at 06:47:11PM +0200, Frederic Weisbecker wrote:
> > So far nohz_full CPUs had to be nocb. This requirement may change
> > temporarily as we are working on preparing RCU to be able to toggle the
> > nocb state o
On Wed, May 13, 2020 at 4:05 PM Joe Perches wrote:
>
> On Tue, 2020-05-12 at 06:56 +0100, Alan Maguire wrote:
> > printk supports multiple pointer object type specifiers (printing
> > netdev features etc). Extend this support using BTF to cover
> > arbitrary types. "%pT" specifies the typed form
On Wed, May 13, 2020 at 2:50 PM Arnd Bergmann wrote:
>
> Right, in particular since Linus started building with gcc-10 already and
> would likely soon run into that problem if he hasn't already ;-)
I don't happen to have stack canaries on the configs I actually boot,
so I didn't notice.
But yes,
On Tue, 2020-05-12 at 06:56 +0100, Alan Maguire wrote:
> printk supports multiple pointer object type specifiers (printing
> netdev features etc). Extend this support using BTF to cover
> arbitrary types. "%pT" specifies the typed format, and the pointer
> argument is a "struct btf_ptr *" where s
A new kgdb feature will soon land (kgdb_earlycon) that lets us run
kgdb much earlier. In order for everything to work properly it's
important that the break hook is setup by the time we process
"kgdbwait".
Right now the break hook is setup in debug_traps_init() and that's
called from arch_initcal
On 5/11/20 10:56 PM, Alan Maguire wrote:
generalize the "seq_show" seq file support in btf.c to support
a generic show callback of which we support two instances; the
current seq file show, and a show with snprintf() behaviour which
instead writes the type data to a supplied string.
Both clas
On 5/13/20 6:00 PM, Christoph Hellwig wrote:
Hi all,
this series start cleaning up the safe kernel and user memory probing
helpers in mm/maccess.c, and then allows architectures to implement
the kernel probing without overriding the address space limit and
temporarily allowing access to user mem
On Wed, May 13, 2020 at 3:36 PM Daniel Borkmann wrote:
>
> It's used for both.
Daniel, BPF real;ly needs to make up its mind about that.
You *cannot* use ti for both.
Yes, it happens to work on x86 and some other architectures.
But on other architectures, the exact same pointer value can be a
On Wed, May 13, 2020 at 11:20:29AM -0700, Paul E. McKenney wrote:
> On Wed, May 13, 2020 at 06:47:08PM +0200, Frederic Weisbecker wrote:
> > This simplify the usage of this API and avoid checking the kernel
> > config from the callers.
> >
> > Signed-off-by: Frederic Weisbecker
> > Cc: Paul E. Mc
On 5/13/20 3:44 AM, Greg Kroah-Hartman wrote:
This is the start of the stable review cycle for the 4.19.123 release.
There are 48 patches in this series, all will be posted as a response
to this one. If anyone has any issues with these being applied, please
let me know.
Responses should be made
On 5/13/20 3:43 AM, Greg Kroah-Hartman wrote:
This is the start of the stable review cycle for the 5.4.41 release.
There are 90 patches in this series, all will be posted as a response
to this one. If anyone has any issues with these being applied, please
let me know.
Responses should be made b
On Wed, 2020-05-13 at 15:48 -0700, Scott Branden wrote:
>
> On 2020-05-13 3:12 p.m., Mimi Zohar wrote:
> > On Wed, 2020-05-13 at 21:28 +, Luis Chamberlain wrote:
> >> On Wed, May 13, 2020 at 05:20:14PM -0400, Mimi Zohar wrote:
> >>> On Wed, 2020-05-13 at 12:41 -0700, Scott Branden wrote:
> >>>
On 5/13/20 3:43 AM, Greg Kroah-Hartman wrote:
This is the start of the stable review cycle for the 5.6.13 release.
There are 118 patches in this series, all will be posted as a response
to this one. If anyone has any issues with these being applied, please
let me know.
Responses should be made
- On May 6, 2020, at 12:03 PM, Alexandre Chartre
alexandre.char...@oracle.com wrote:
> On 5/5/20 3:16 PM, Thomas Gleixner wrote:
>> The sanitizers are not really applicable to the fragile low level entry
>> code. code. Entry code needs to carefully setup a normal 'runtime'
>
> typo: code. co
Nested translation mode is supported in VT-d 3.0 Spec.CH 3.8.
With PASID granular translation type set to 0x11b, translation
result from the first level(FL) also subject to a second level(SL)
page table translation. This mode is used for SVA virtualization,
where FL performs guest virtual to guest
- On May 5, 2020, at 9:16 AM, Thomas Gleixner t...@linutronix.de wrote:
> This is completely overengineered and definitely not an interface which
> should be made available to anything else than this particular MCE case.
This patch introduces a significant change under the radar (not explaine
When Shared Virtual Address (SVA) is enabled for a guest OS via
vIOMMU, we need to provide invalidation support at IOMMU API and driver
level. This patch adds Intel VT-d specific function to implement
iommu passdown invalidate API for shared virtual address.
The use case is for supporting caching
Shared virtual address (SVA), a.k.a, Shared virtual memory (SVM) on Intel
platforms allow address space sharing between device DMA and applications.
SVA can reduce programming complexity and enhance security.
This series is intended to enable SVA virtualization, i.e. enable use of SVA
within a gues
When Shared Virtual Memory is exposed to a guest via vIOMMU, scalable
IOTLB invalidation may be passed down from outside IOMMU subsystems.
This patch adds invalidation functions that can be used for additional
translation cache types.
Signed-off-by: Jacob Pan
Reviewed-by: Eric Auger
---
drivers
An Intel iommu domain uses 5-level page table by default. If the
iommu that the domain tries to attach supports less page levels,
the top level page tables should be skipped. Add a helper to do
this so that it could be used in other places.
Signed-off-by: Jacob Pan
Reviewed-by: Eric Auger
Review
When VT-d driver runs in the guest, PASID allocation must be
performed via virtual command interface. This patch registers a
custom IOASID allocator which takes precedence over the default
XArray based allocator. The resulting IOASID allocation will always
come from the host. This ensures that PASI
When supporting guest SVA with emulated IOMMU, the guest PASID
table is shadowed in VMM. Updates to guest vIOMMU PASID table
will result in PASID cache flush which will be passed down to
the host as bind guest PASID calls.
For the SL page tables, it will be harvested from device's
default domain (
Move domain helper to header to be used by SVA code.
Signed-off-by: Jacob Pan
Reviewed-by: Eric Auger
Reviewed-by: Kevin Tian
---
drivers/iommu/intel-iommu.c | 6 --
include/linux/intel-iommu.h | 6 ++
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/iommu/intel-i
From: Lu Baolu
Enabling IOMMU in a guest requires communication with the host
driver for certain aspects. Use of PASID ID to enable Shared Virtual
Addressing (SVA) requires managing PASID's in the host. VT-d 3.0 spec
provides a Virtual Command Register (VCMD) to facilitate this.
Writes to this re
On Thu, May 14, 2020 at 12:20:38AM +0200, Borislav Petkov wrote:
> On Wed, May 13, 2020 at 11:49:49PM +0200, Arnd Bergmann wrote:
> > Right, in particular since Linus started building with gcc-10 already and
> > would likely soon run into that problem if he hasn't already ;-)
>
> Oh noo, we don't
On Wed, May 13, 2020 at 3:48 PM Joe Perches wrote:
>
> On Wed, 2020-05-13 at 15:24 -0700, Alexei Starovoitov wrote:
> > On Tue, May 12, 2020 at 06:56:38AM +0100, Alan Maguire wrote:
> > > The printk family of functions support printing specific pointer types
> > > using %p format specifiers (MAC a
- On May 13, 2020, at 5:10 PM, rostedt rost...@goodmis.org wrote:
> On Wed, 13 May 2020 16:56:41 -0400 (EDT)
> Mathieu Desnoyers wrote:
>
>> - On May 5, 2020, at 9:16 AM, Thomas Gleixner t...@linutronix.de wrote:
>>
>> > Make sure task_work runs before any kind of userspace -- very much
On 2020-05-13 3:12 p.m., Mimi Zohar wrote:
On Wed, 2020-05-13 at 21:28 +, Luis Chamberlain wrote:
On Wed, May 13, 2020 at 05:20:14PM -0400, Mimi Zohar wrote:
On Wed, 2020-05-13 at 12:41 -0700, Scott Branden wrote:
On 2020-05-13 12:39 p.m., Mimi Zohar wrote:
On Wed, 2020-05-13 at 12:18
On Wed, 2020-05-13 at 15:24 -0700, Alexei Starovoitov wrote:
> On Tue, May 12, 2020 at 06:56:38AM +0100, Alan Maguire wrote:
> > The printk family of functions support printing specific pointer types
> > using %p format specifiers (MAC addresses, IP addresses, etc). For
> > full details see Docume
On Wed, May 06, 2020 at 08:32:59PM -0700,
sathyanarayanan.kuppusw...@linux.intel.com wrote:
> From: Kuppuswamy Sathyanarayanan
>
> If there are non-hotplug capable devices connected to a given
> port, then during the fatal error recovery(triggered by DPC or
> AER), after calling reset_link() fun
On Wed, May 13, 2020 at 11:38:31AM -0700, Paul E. McKenney wrote:
> On Wed, May 13, 2020 at 06:47:12PM +0200, Frederic Weisbecker wrote:
> > +static void __rcu_nocb_rdp_deoffload(struct rcu_data *rdp)
> > +{
> > + unsigned long flags;
> > + struct rcu_node *rnp = rdp->mynode;
> > +
> > + prin
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