When check_memblock_offlined_cb() returns failed rc(e.g. the memblock is
online at that time), mem_hotplug_begin/done is unpaired in such case.
Therefore a warning:
Call Trace:
percpu_up_write+0x33/0x40
try_remove_memory+0x66/0x120
? _cond_resched+0x19/0x30
remove_memory+0x2b/0x40
Excerpts from Waiman Long's message of July 7, 2020 4:39 am:
> On 7/6/20 12:35 AM, Nicholas Piggin wrote:
>> v3 is updated to use __pv_queued_spin_unlock, noticed by Waiman (thank you).
>>
>> Thanks,
>> Nick
>>
>> Nicholas Piggin (6):
>>powerpc/powernv: must include hvcall.h to get PAPR
On Mon, Jul 06, 2020 at 09:29:46AM -0700, Andy Lutomirski wrote:
> Is most contexts where 'whitelist' or 'blacklist' might be used, a
> descriptive phrase could be used instead. For example, a seccomp
> filter could have a 'list of allowed syscalls' or a 'list of
> disallowed syscalls', and just
Nayna Jain writes:
> The device-tree property to check secure and trusted boot state is
> different for guests(pseries) compared to baremetal(powernv).
>
> This patch updates the existing is_ppc_secureboot_enabled() and
> is_ppc_trustedboot_enabled() function to add support for pseries.
>
>
pm_runtime_get_sync() increments the runtime PM usage counter even
it returns an error code. Thus a pairing decrement is needed on
the error handling path to keep the counter balanced.
Signed-off-by: Dinghao Liu
---
Changelog:
v2: - Remove redundant brackets.
---
On Mon, Jul 06, 2020 at 04:21:38PM +0530, Suraj Upadhyay wrote:
> Hii Maintainers,
> I recently came across this list of janatorial tasks
> for starters on DRM subsystem [1]. One of the tasks is replacing
> conventional dmesg macros (like dev_info(), dev_warn() and dev_err())
> with DRM
On 7/6/20 6:53 PM, Andrew Morton wrote:
> The mm-of-the-moment snapshot 2020-07-06-18-53 has been uploaded to
>
>http://www.ozlabs.org/~akpm/mmotm/
>
> mmotm-readme.txt says
>
> README for mm-of-the-moment:
>
> http://www.ozlabs.org/~akpm/mmotm/
>
> This is a snapshot of my -mm patch
On Tue, Jul 07, 2020 at 12:00:09PM +0800, Huang, Ying wrote:
> Feng Tang writes:
>
> > On Mon, Jul 06, 2020 at 06:34:34AM -0700, Andi Kleen wrote:
> >> > ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
> >> > -if (ret == 0 && write)
> >> > +if (ret == 0 &&
Replace :c:func: with func() as the previous usage is deprecated.
Signed-off-by: Puranjay Mohan
---
Documentation/driver-api/device-io.rst | 22 +++---
1 file changed, 11 insertions(+), 11 deletions(-)
diff --git a/Documentation/driver-api/device-io.rst
On Mon, 2020-07-06 at 14:27 +0200, Laurent Dufour wrote:
> Le 06/07/2020 à 11:25, Chinwen Chang a écrit :
> > On Thu, 2019-06-20 at 16:19 +0800, Haiyan Song wrote:
> >> Hi Laurent,
> >>
> >> I downloaded your script and run it on Intel 2s skylake platform with
> >> spf-v12 patch
> >> serials.
>
On Sun, Jul 05, 2020 at 01:53:39PM -0700, Andy Lutomirski wrote:
> On Sun, Jul 5, 2020 at 1:00 PM David P. Reed wrote:
> >
> > On Sunday, July 5, 2020 2:26pm, "Andy Lutomirski" said:
> > > As a minor caveat, doing cr4_clear_bits() in NMI context is not really
> > > okay, but we're about to
>
> From: Bean Huo
>
> ufshcd_comp_devman_upiu() alwasy make me confuse that it is a request
> completion calling function. Change it to ufshcd_compose_devman_upiu().
>
> Signed-off-by: Bean Huo
Acked-by: Avri Altman
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: bfe91da29bfad9941d5d703d45e29f0812a20724
commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to
define address spaces
date: 3 weeks ago
config: s390-randconfig-s032-20200707 (attached
On Mon 06 Jul 21:58 PDT 2020, Kathiravan T wrote:
> set target proc as APPS to route the gpio interrupts to APPS
>
> Signed-off-by: Rajkumar Ayyasamy
> Signed-off-by: Kathiravan T
This says "first Rajkumar certified the patch's origin, then you picked
it up and certified its origin". As such
Use readl_relaxed() instead of __raw_readl(), and use BIT(x)
instead of (1 << X) to fix below build warning reported by kernel
test robot:
drivers/clk/imx/clk-imx6sl.c:149:49: warning: Shifting signed 32-bit
value by 31 bits is undefined behaviour [shiftTooManyBitsSigned]
while
Add CONFIG_CLK_xxx for i.MX ARMv7 platforms, and use it as build option
instead of CONFIG_SOC_xxx, the CONFIG_CLK_xxx will be selected by default
according to CONFIG_SOC_xxx.
Signed-off-by: Anson Huang
Reviewed-by: Dong Aisheng
---
Changes since V5:
- make i.MX6/7 platforms clock driver
There are more and more requirements of building SoC specific drivers
as modules, add support for building i.MX common clock driver as module
to meet the requirement.
Signed-off-by: Anson Huang
---
No change.
---
drivers/clk/imx/Kconfig| 8 ++--
drivers/clk/imx/Makefile
Export clk_hw_register_composite() to support user built as module.
ERROR: modpost: "clk_hw_register_composite" [drivers/clk/imx/mxc-clk.ko]
undefined!
Signed-off-by: Anson Huang
Reviewed-by: Stephen Boyd
---
No change.
---
drivers/clk/clk-composite.c | 1 +
1 file changed, 1 insertion(+)
Change configuration to "tristate", add module author, description
and license to support building i.MX8M SoCs clock driver as module.
Signed-off-by: Anson Huang
Reviewed-by: Dong Aisheng
---
No change.
---
drivers/clk/imx/Kconfig | 16
drivers/clk/imx/clk-imx8mm.c | 4
Change configuration to "tristate", add module author, description and
license to support building i.MX8QXP clock drivers as module.
Signed-off-by: Anson Huang
---
No change.
---
drivers/clk/imx/Kconfig| 10 ++
drivers/clk/imx/Makefile | 9 -
Nowdays, there are more and more requirements of building SoC specific drivers
as modules, such as Android GKI (generic kernel image), this patch set supports
building i.MX ARMv8 SoCs clock drivers as modules,
The CLK_IMXxxx is introduced for i.MX ARMv7 platforms in order to make the build
On 7/1/2020 4:12 AM, Matthias Kaehlcke wrote:
On Tue, Jun 16, 2020 at 01:38:49PM -0700, Matthias Kaehlcke wrote:
On Tue, Jun 16, 2020 at 10:22:47AM +0530, Sandeep Maheswaram (Temp) wrote:
On 6/16/2020 1:12 AM, Matthias Kaehlcke wrote:
On Thu, Jun 04, 2020 at 04:16:31AM -0700, Stephen Boyd
On Sat, Jul 04, 2020 at 04:38:08PM -0400, David P. Reed wrote:
> Fix: Mask undefined operation fault during emergency VMXOFF that must be
> attempted to force cpu exit from VMX root operation.
> Explanation: When a cpu may be in VMX root operation (only possible when
> CR4.VMXE is set), crash or
On Mon 29 Jun 21:54 PDT 2020, Vinod Koul wrote:
> Hi Bjorn,
>
> On 29-06-20, 12:24, Bjorn Andersson wrote:
> > On Mon 29 Jun 07:54 PDT 2020, Vinod Koul wrote:
> >
> > > UFS QMP phy drivers are duplicate as we are supposed to use common QMP
> > > phy driver which is working fine on various
On Mon, 6 Jul 2020, Mike Rapoport wrote:
> From: Mike Rapoport
>
> The definitions of shift, mask and size for the second and the third level
> of the leaf pages are available only when CONFIG_TRANSPARENT_HUGEPAGE is
> set. Otherwise they evaluate to BUILD_BUG().
>
> There is no explanation
set target proc as APPS to route the gpio interrupts to APPS
Signed-off-by: Rajkumar Ayyasamy
Signed-off-by: Kathiravan T
---
drivers/pinctrl/qcom/pinctrl-ipq8074.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/pinctrl/qcom/pinctrl-ipq8074.c
Add Shengjiu who's actively working on the latest fsl/nxp audio drivers.
Signed-off-by: Nicolin Chen
Acked-by: Shengjiu Wang
Reviewed-by: Fabio Estevam
---
Changelog
v1->v2:
* Replaced Shengjiu's emaill address with his gmail one
* Added Acked-by from Shengjiu and Reviewed-by from Fabio
Hi all,
Today's linux-next merge of the seccomp tree got a conflict in:
tools/testing/selftests/seccomp/seccomp_bpf.c
between commit:
9847d24af95c ("selftests/harness: Refactor XFAIL into SKIP")
from the kselftest tree and commits:
aae7d264d68b ("selftests/seccomp: Check for EPOLLHUP
When enabling ACS, enable translation blocking for external facing ports
and untrusted devices.
Signed-off-by: Rajat Jain
---
v3: print warning if ACS_TB not supported on external-facing/untrusted ports.
Minor code comments fixes.
v2: Commit log change
drivers/pci/pci.c| 7 +++
Move pci_enable_acs() and the functions it depends on, further up in the
source code to avoid having to forward declare it when we make it static
in near future (next patch).
No functional changes intended.
Signed-off-by: Rajat Jain
---
v3: Initial version of the patch, created per Bjorn's
The "ExternalFacingPort" devices (root ports) are internal devices that
sit on the internal system fabric. Ref:
https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports
Currently they were treated (marked as untrusted) at par with other
external devices downstream
Currently ACS capabiity is being looked up at a number of places. Read and
store it once at bootup so that it can be used by all later.
Signed-off-by: Rajat Jain
---
v3: fix commit log, remove forward declation of static function
v2: Commit log cosmetic changes
drivers/pci/p2pdma.c | 2 +-
[]..
@@ -1151,6 +1168,10 @@ static const struct msm_pinctrl_soc_data sc7180_pinctrl
= {
static int sc7180_pinctrl_probe(struct platform_device *pdev)
{
+ if (of_machine_is_compatible("google,lazor")) {
+ sc7180_pinctrl.wakeirq_map = sc7180_lazor_pdc_map;
+
On Mon, 6 Jul 2020, Matthew Wilcox wrote:
> On Mon, Jul 06, 2020 at 05:15:09PM +0800, Alex Shi wrote:
> > Hi Kirill & Johannes & Matthew,
Adding Kirill, who was in patch's Cc list but not mail's Cc list.
I asked Alex to direct this one particularly to Kirill and Johannes
and Matthew because (and
On 7/6/2020 10:11 AM, Nicolas Saenz Julienne wrote:
> Hi Florian,
>
> The following changes since commit b3a9e3b9622ae10064826dccb4f7a52bd88c7407:
>
> Linux 5.8-rc1 (2020-06-14 12:45:04 -0700)
>
> are available in the Git repository at:
>
>
On Tue, Jul 07, 2020 at 05:39:04AM +0100, Matthew Wilcox wrote:
> although I think you have a simpler task.
>
> XA_STATE(xas, ..., start_index);
>
> for (;;) {
> struct page *page = xas_next();
>
> if (!page || (~page->vm_max_prot_bits & vm_prot_bits))
>
On Mon, Jul 6, 2020 at 9:43 PM Hans Verkuil wrote:
>
> On 04/07/2020 14:36, Alexandre Courbot wrote:
> > On Fri, Jul 3, 2020 at 5:30 PM Hans Verkuil wrote:
> >>
> >> On 26/06/2020 10:04, Alexandre Courbot wrote:
> >>> v4l2-compliance expects ENOTTY to be returned when a given queue does
> >>>
--
Lieber Freund (Assalamu Alaikum),
Ich bin vor einer privaten Suche auf Ihren E-Mail-Kontakt gestoßen
Ihre Hilfe. Mein Name ist Aisha Al-Qaddafi, eine alleinerziehende
Mutter und eine Witwe
mit drei Kindern. Ich bin die einzige leibliche Tochter des Spätlibyschen
Präsident (verstorbener Oberst
On Tue, Jun 16, 2020 at 12:08:48PM +0800, Xu Yilun wrote:
> This patch adds introductions of interrupt related interfaces for FME
> error reporting, port error reporting and AFU user interrupts features.
>
> Signed-off-by: Luwei Kang
> Signed-off-by: Wu Hao
> Signed-off-by: Xu Yilun
>
On Tue, Jun 16, 2020 at 12:08:46PM +0800, Xu Yilun wrote:
> Error reporting interrupt is very useful to notify users that some
> errors are detected by the hardware. Once users are notified, they
> could query hardware logged error states, no need to continuously
> poll on these states.
>
> This
On Tue, Jun 16, 2020 at 12:08:47PM +0800, Xu Yilun wrote:
> AFU (Accelerated Function Unit) is dynamic region of the DFL based FPGA,
> and always defined by users. Some DFL based FPGA cards allow users to
> implement their own interrupts in AFU. In order to support this,
> hardware implements a
On Tue, Jun 16, 2020 at 12:08:45PM +0800, Xu Yilun wrote:
> Error reporting interrupt is very useful to notify users that some
> errors are detected by the hardware. Once users are notified, they
> could query hardware logged error states, no need to continuously
> poll on these states.
>
> This
On Mon, Jul 06, 2020 at 09:29:04PM -0700, Sean Christopherson wrote:
> > > > + idx_start = PFN_DOWN(start);
> > > > + idx_end = PFN_DOWN(end - 1);
> > > > +
> > > > + for (idx = idx_start; idx <= idx_end; ++idx) {
> > > > + mutex_lock(>lock);
> > > > +
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: bfe91da29bfad9941d5d703d45e29f0812a20724
commit: d6156218bec93965b6a43ba2686ad962ce77c854 btrfs: make locking assertion
helpers static inline
date: 8 months ago
config: ia64-randconfig-s031-20200707
Dear Friend,
Please i want you to read this letter very carefully and i must
apologize for berging this message into your mail box without any
formal introduction due to the urgency and confidential of this issue
and i know that this message will come to you as a surprise, Please
this is not a
The --defconfig option in kunit_tool was removed in [1], but the getting
started and kunit_tool documentation still encouraged its use. Update
those documents to reflect that it's no-longer required, and is the
default behaviour if no .kunitconfig is found.
Also update a couple of places where
On Sat, Jul 4, 2020 at 5:41 PM Kees Cook wrote:
>
> On Sat, Jul 04, 2020 at 01:02:51PM -0700, Dan Williams wrote:
> > Recent events have prompted a Linux position statement on inclusive
> > terminology. Given that Linux maintains a coding-style and its own
> > idiomatic set of terminology here is
Man, I really need to type faster.
On Tue, Jul 07, 2020 at 07:11:51AM +0300, Jarkko Sakkinen wrote:
> On Tue, Jul 07, 2020 at 04:36:17AM +0100, Matthew Wilcox wrote:
> > What's a leaf function? Is it like a CPU instruction?
>
> Yeah, the opcode is ENCLS for ring-0 (enclave management and
>
On 7/3/2020 10:31 PM, Mark Brown wrote:
On Fri, Jul 03, 2020 at 03:11:31PM +0530, Rajendra Nayak wrote:
QSPI needs to vote on a performance state of a power domain depending on
the clock rate. Add support for it by specifying the perf state/clock rate
as an OPP table in device tree.
This
Hi Greg,
Please pull to receive a single fix for Intel driver
The following changes since commit b3a9e3b9622ae10064826dccb4f7a52bd88c7407:
Linux 5.8-rc1 (2020-06-14 12:45:04 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire.git
On 7/6/2020 9:40 PM, Matthias Kaehlcke wrote:
On Thu, Jul 02, 2020 at 04:39:09PM +0530, Rajendra Nayak wrote:
On SDM845 and SC7180 DSI needs to express a performance state
requirement on a power domain depending on the clock rates.
Use OPP table from DT to register with OPP framework and use
Hi Greg,
Please pull to receive fixes for phy for 5.8. Kishon is bit busy and has
asked me to send the PR for phy this time around.
The following changes since commit b3a9e3b9622ae10064826dccb4f7a52bd88c7407:
Linux 5.8-rc1 (2020-06-14 12:45:04 -0700)
are available in the Git repository at:
On Mon, Jul 6, 2020 at 9:07 AM Mike Rapoport wrote:
>
> Hi Chris,
>
> On Mon, Jul 06, 2020 at 12:45:34PM +, Chris Mason via Ksummit-discuss
> wrote:
> > On 5 Jul 2020, at 0:55, Willy Tarreau wrote:
> >
> > > On Sat, Jul 04, 2020 at 01:02:51PM -0700, Dan Williams wrote:
> > >> +Non-inclusive
On Thu, Jul 02, 2020 at 08:57:55AM +0200, Andrzej Hajda wrote:
>
> On 30.06.2020 20:00, Dmitry Torokhov wrote:
> > On Tue, Jun 30, 2020 at 8:42 AM Andrzej Hajda wrote:
> >>
> >> On 30.06.2020 10:59, Grygorii Strashko wrote:
> >>> Hi
> >>>
> >>> On 29/06/2020 14:28, Andrzej Hajda wrote:
> Hi
On Tue, Jul 07, 2020 at 04:36:17AM +0100, Matthew Wilcox wrote:
> On Tue, Jul 07, 2020 at 06:01:51AM +0300, Jarkko Sakkinen wrote:
> > Intel Software Guard eXtensions (SGX) is a set of CPU instructions that
> > can be used by applications to set aside private regions of code and
> > data. The code
On Tue, Jul 07, 2020 at 07:01:51AM +0300, Jarkko Sakkinen wrote:
> On Tue, Jul 07, 2020 at 04:24:08AM +0100, Matthew Wilcox wrote:
> > On Mon, Jul 06, 2020 at 08:22:54PM -0700, Sean Christopherson wrote:
> > > On Tue, Jul 07, 2020 at 04:14:24AM +0100, Matthew Wilcox wrote:
> > > > > +
On 7/7/20 12:03 AM, Jarkko Sakkinen wrote:
On Mon, Jul 06, 2020 at 11:08:12PM -0400, Stefan Berger wrote:
On 7/6/20 10:24 PM, Jarkko Sakkinen wrote:
On Mon, Jul 06, 2020 at 07:55:26PM -0400, Stefan Berger wrote:
On 7/6/20 7:09 PM, Jarkko Sakkinen wrote:
On Mon, Jul 06, 2020 at 02:19:53PM
On Mon, Jul 6, 2020 at 12:16 PM Mark Brown wrote:
>
> On Sat, Jul 04, 2020 at 01:02:51PM -0700, Dan Williams wrote:
>
> > +'blacklist'. Recommended replacements for 'slave' are: 'secondary',
> > +'subordinate', 'replica', 'responder', 'follower', 'proxy', or
>
> I'd second the suggestion of
From: Sergey Organov Sent: Monday, July 6, 2020 10:26 PM
> Code of the form "if(x) x = 0" replaced with "x = 0".
>
> Code of the form "if(x == a) x = a" removed.
>
> Signed-off-by: Sergey Organov
> ---
> drivers/net/ethernet/freescale/fec_ptp.c | 4 +---
> 1 file changed, 1 insertion(+), 3
On Tue, Jul 07, 2020 at 06:37:46AM +0300, Jarkko Sakkinen wrote:
> +*Software Guard eXtensions (SGX)* is a set of instructions that enable ring-3
I can never remember which way up intel numbers their rings.
Is that user mode or kernel mode?
> +applications to set aside private regions of code
On Mon, Jul 06, 2020 at 08:29:15PM -0700, Sean Christopherson wrote:
> On Tue, Jul 07, 2020 at 06:01:52AM +0300, Jarkko Sakkinen wrote:
> > +long sgx_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
> > +{
> > + struct sgx_encl *encl = filep->private_data;
> > + int ret,
From: Sergey Organov Sent: Monday, July 6, 2020 10:26 PM
> PPS feature could be useful even when hardware time stamping of network
> packets is not in use, so remove offending check for this condition from
> fec_ptp_enable_pps().
If hardware time stamping of network packets is not in use, PPS is
On Mon, Jul 6, 2020 at 11:30 AM Shuah Khan wrote:
>
> On 7/4/20 2:02 PM, Dan Williams wrote:
> > Recent events have prompted a Linux position statement on inclusive
> > terminology. Given that Linux maintains a coding-style and its own
> > idiomatic set of terminology here is a proposal to answer
hugetlb_cma[0] can be NULL due to various reasons, for example, node0 has
no memory. so NULL hugetlb_cma[0] doesn't necessarily mean cma is not
enabled. gigantic pages might have been reserved on other nodes.
Fixes: cf11e85fc08c ("mm: hugetlb: optionally allocate gigantic hugepages using
cma")
On Tue, Jul 07, 2020 at 04:14:24AM +0100, Matthew Wilcox wrote:
> On Tue, Jul 07, 2020 at 06:01:50AM +0300, Jarkko Sakkinen wrote:
> > +++ b/mm/mprotect.c
> > @@ -603,13 +603,20 @@ static int do_mprotect_pkey(unsigned long start,
> > size_t len,
> > goto out;
> > }
On Mon, Jul 06, 2020 at 11:08:12PM -0400, Stefan Berger wrote:
> On 7/6/20 10:24 PM, Jarkko Sakkinen wrote:
> > On Mon, Jul 06, 2020 at 07:55:26PM -0400, Stefan Berger wrote:
> > > On 7/6/20 7:09 PM, Jarkko Sakkinen wrote:
> > > > On Mon, Jul 06, 2020 at 02:19:53PM -0400, Stefan Berger wrote:
> >
On Tue, Jul 7, 2020 at 5:50 AM Nick Terrell wrote:
>
> From: Nick Terrell
>
> Please pull from
>
> g...@github.com:terrelln/linux.git tags/v6-zstd
>
> to get these changes. Alternatively the patchset is included.
>
Hi Nick,
cool, I just pulled from their.
Yesterday, I switched over from
On Tue, Jul 07, 2020 at 04:24:08AM +0100, Matthew Wilcox wrote:
> On Mon, Jul 06, 2020 at 08:22:54PM -0700, Sean Christopherson wrote:
> > On Tue, Jul 07, 2020 at 04:14:24AM +0100, Matthew Wilcox wrote:
> > > > + if (vma->vm_ops && vma->vm_ops->mprotect) {
> > > > +
On Mon, Jul 6, 2020 at 9:30 AM Andy Lutomirski wrote:
>
> On Sat, Jul 4, 2020 at 1:19 PM Dan Williams wrote:
> >
> > Recent events have prompted a Linux position statement on inclusive
> > terminology. Given that Linux maintains a coding-style and its own
> > idiomatic set of terminology here is
Fix spelling mistakes in the comments
quering==>querying
Signed-off-by: lihao
---
security/selinux/netif.c | 2 +-
security/selinux/netnode.c | 2 +-
security/selinux/netport.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/security/selinux/netif.c
Feng Tang writes:
> On Mon, Jul 06, 2020 at 06:34:34AM -0700, Andi Kleen wrote:
>> >ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
>> > - if (ret == 0 && write)
>> > + if (ret == 0 && write) {
>> > + if (sysctl_overcommit_memory == OVERCOMMIT_NEVER)
>> > +
Add a selftest for SGX. It is a trivial test where a simple enclave
copies one 64-bit word of memory between two memory locations.
Cc: linux-kselft...@vger.kernel.org
Signed-off-by: Jarkko Sakkinen
---
tools/testing/selftests/Makefile | 1 +
tools/testing/selftests/sgx/.gitignore
On Sun, Jul 05, 2020 at 11:47:25AM +0800, Chris Ruehl wrote:
> Add support for DTS bindings for the sensirion shtc1,shtw1 and shtc3.
>
> Signed-off-by: Chris Ruehl
> ---
> drivers/hwmon/shtc1.c | 22 --
> 1 file changed, 20 insertions(+), 2 deletions(-)
>
> diff --git
On 07/07, Chao Yu wrote:
> On 2020/7/7 11:21, Jaegeuk Kim wrote:
> > Hi Chao,
> >
> > Do you have any brief design doc to present the idea?
>
> Hi Jaegeuk,
>
> You mean this whole patchset, right?
>
> I can add a brief design description in patch 0/5.
Yeah, it's a bit hard to understand the
On 07/06/2020 02:33 PM, David Hildenbrand wrote:
>> return 0;
>> @@ -1505,7 +1505,7 @@ int __meminit vmemmap_populate(unsigned long start,
>> unsigned long end, int node,
>> int err;
>>
>> if (end - start < PAGES_PER_SECTION * sizeof(struct page))
>> -err =
From: Adam Borowski
For now, that's arch/x86/boot/compressed/vmlinux.bin.zst but probably more
will come, thus let's be consistent with all other compressors.
Tested-by: Sedat Dilek
Reviewed-by: Kees Cook
Signed-off-by: Nick Terrell
Signed-off-by: Adam Borowski
---
.gitignore | 1 +
1 file
From: Nick Terrell
Bump the ZO_z_extra_bytes margin for zstd.
Zstd needs 3 bytes per 128 KB, and has a 22 byte fixed overhead.
Zstd needs to maintain 128 KB of space at all times, since that is
the maximum block size. See the comments regarding in-place
decompression added in
From: Nick Terrell
Don't export symbols if XXH_PREBOOT is defined.
This change is necessary to get xxhash to work in a preboot environment,
which is needed to support zstd-compressed kernels.
Reviewed-by: Kees Cook
Tested-by: Sedat Dilek
Signed-off-by: Nick Terrell
---
lib/xxhash.c | 21
From: Nick Terrell
* Don't export symbols if ZSTD_PREBOOT is defined.
* Remove a double definition of the CHECK_F macro when the zstd
library is amalgamated.
* Switch ZSTD_copy8() to __builtin_memcpy(), because in the preboot
environment on x86 gcc can't inline `memcpy()` otherwise.
* Limit
From: Nick Terrell
* Add unzstd() and the zstd decompress interface.
* Add zstd support to decompress_method().
The decompress_method() and unzstd() functions are used to decompress
the initramfs and the initrd. The __decompress() function is used in
the preboot environment to decompress a zstd
From: Nick Terrell
* Adds the zstd cmd to scripts/Makefile.lib
* Adds the HAVE_KERNEL_ZSTD and KERNEL_ZSTD options
Architecture specific support is still needed for decompression.
Reviewed-by: Kees Cook
Tested-by: Sedat Dilek
Signed-off-by: Nick Terrell
---
init/Kconfig | 15
From: Nick Terrell
* Add support for zstd compressed kernel
* Bump the heap size for zstd.
* Update the documentation.
Integrates the ZSTD decompression code to the x86 pre-boot code.
Zstandard requires slightly more memory during the kernel decompression
on x86 (192 KB vs 64 KB), and the
From: Nick Terrell
* Add support for a zstd compressed initramfs.
* Add compression for compressing built-in initramfs with zstd.
I have tested this patch by boot testing with buildroot and QEMU.
Specifically, I booted the kernel with both a zstd and gzip compressed
initramfs, both built into
From: Nick Terrell
Please pull from
g...@github.com:terrelln/linux.git tags/v6-zstd
to get these changes. Alternatively the patchset is included.
Hi all,
This patch set adds support for a ZSTD-compressed kernel, ramdisk, and
initramfs in the kernel boot process. ZSTD-compressed ramdisk and
On Thu, Jun 18, 2020 at 04:37:35PM +0200, Peter Zijlstra wrote:
>
> OK, done. tip/locking/header should contain just this patch, and that
> branch also got merged into tip/locking/core.
Hi Peter:
Could you please apply this patch on top as there is still a header
loop otherwise? Thanks!
Add the maintainer information for the SGX subsystem.
Cc: Thomas Gleixner
Cc: Borislav Petkov
Signed-off-by: Jarkko Sakkinen
---
MAINTAINERS | 11 +++
1 file changed, 11 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 1d4aa7f942de..9b5268aa26db 100644
--- a/MAINTAINERS
+++
Document the Intel SGX kernel architecture. The fine-grained micro
architecture details can be looked up from Intel SDM Volume 3D.
Cc: linux-...@vger.kernel.org
Acked-by: Randy Dunlap
Co-developed-by: Sean Christopherson
Signed-off-by: Sean Christopherson
Signed-off-by: Jarkko Sakkinen
---
From: Sean Christopherson
The basic concept and implementation is very similar to the kernel's
exception fixup mechanism. The key differences are that the kernel
handler is hardcoded and the fixup entry addresses are relative to
the overall table as opposed to individual entries.
Hardcoding
From: Sean Christopherson
vDSO functions can now leverage an exception fixup mechanism similar to
kernel exception fixup. For vDSO exception fixup, the initial user is
Intel's Software Guard Extensions (SGX), which will wrap the low-level
transitions to/from the enclave, i.e. EENTER and ERESUME
From: Sean Christopherson
An SGX runtime must be aware of the exceptions, which happen inside an
enclave. Introduce a vDSO call that wraps EENTER/ERESUME cycle and returns
the CPU exception back to the caller exactly when it happens.
Kernel fixups the exception information to RDI, RSI and RDX.
Add VMA callbacks for ptrace() that can be used with debug enclaves.
With debug enclaves data can be read and write the memory word at a time
by using ENCLS(EDBGRD) and ENCLS(EDBGWR) leaf instructions.
Acked-by: Jethro Beekman
Signed-off-by: Jarkko Sakkinen
---
arch/x86/kernel/cpu/sgx/encl.c |
There is a limited amount of EPC available. Therefore, some of it must be
copied to the regular memory, and only subset kept in the SGX reserved
memory. While kernel cannot directly access enclave memory, SGX provides a
set of ENCLS leaf functions to perform reclaiming.
This commits implements a
From: Sean Christopherson
Add helper function to sanitize error code to prepare for vDSO exception
fixup, which will expose the error code to userspace and runs before
set_signal_archinfo(), i.e. suppresses the signal when fixup is successful.
Acked-by: Jethro Beekman
Signed-off-by: Sean
Add an ioctl that performs ENCLS[EINIT], which locks down the measurement
and initializes the enclave for entrance. After this, new pages can no
longer be added.
Acked-by: Jethro Beekman
Tested-by: Jethro Beekman
Tested-by: Haitao Huang
Tested-by: Chunyang Hui
Tested-by: Jordan Hand
Provisioning Certification Enclave (PCE), the root of trust for other
enclaves, generates a signing key from a fused key called Provisioning
Certification Key. PCE can then use this key to certify an attestation key
of a Quoting Enclave (QE), e.g. we get the chain of trust down to the
hardware if
Add an ioctl, which performs ENCLS[EADD] that adds new visible page to an
enclave, and optionally ENCLS[EEXTEND] operations that hash the page to the
enclave measurement. By visible we mean a page that can be mapped to the
address range of an enclave.
Acked-by: Jethro Beekman
Tested-by: Jethro
Add an ioctl that performs ENCLS[ECREATE], which creates SGX Enclave
Control Structure for the enclave. SECS contains attributes about the
enclave that are used by the hardware and cannot be directly accessed by
software, as SECS resides in the EPC.
One essential field in SECS is a field that
From: Sean Christopherson
Add vm_ops()->mprotect() for additional constraints for a VMA.
Intel Software Guard eXtensions (SGX) will use this callback to add two
constraints:
1. Verify that the address range does not have holes: each page address
must be filled with an enclave page.
2.
Intel Software Guard eXtensions (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 SGX hosted software entity is disallowed to
access the memory inside the enclave enforced by the CPU. We call these
entities
From: Sean Christopherson
Enumerate Enclave Page Cache (EPC) sections via CPUID and add the data
structures necessary to track EPC pages so that they can be easily borrowed
for different uses.
Embed section index to the first eight bits of the EPC page descriptor.
Existing client hardware
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