On Tue, 8 Dec 2020 19:48:56 +0100 Andrew Lunn wrote:
> > -err_disable_rxclk:
> > - clk_disable_unprepare(*rx_clk);
> > -
> > -err_disable_txclk:
> > - clk_disable_unprepare(*tx_clk);
> > -
> > -err_disable_hclk:
> > - clk_disable_unprepare(*hclk);
> > -
> > -err_disable_pclk:
> > -
On Tue, Dec 08 2020 at 12:32, Andy Lutomirski wrote:
>> On Dec 8, 2020, at 11:25 AM, Thomas Gleixner wrote:
>> One issue here is that guests might want to run their own NTP/PTP. One
>> reason to do that is that some people prefer the leap second smearing
>> NTP servers.
>
> I would hope that
On 12/8/20 2:06 AM, Andy Shevchenko wrote:
> Strangely I hadn't had noticed the existence of the list_entry_is_head() in
> apparmor code when added the same one in the list.h. Luckily it's fully
> identical and didn't break builds. In any case we don't need a duplicate
> anymore, thus remove it
On Tue, Dec 8, 2020 at 6:50 PM Eric Dumazet wrote:
>
> Driver could be called with an arbitrary budget (of 64),
> and if its ring buffer has been depleted, return @budget instead of skb
> counts,
> and not ream the interrupt
>
Aha, so the decision to re-arm the interrupts is made by looking
at
From: Zhang Changzhong
Date: Tue, 8 Dec 2020 09:53:42 +0800
> platform_get_resource() may fail and in this case a NULL dereference
> will occur.
>
> Fix it to use devm_platform_ioremap_resource() instead of calling
> platform_get_resource() and devm_ioremap().
>
> This is detected by
On Fri, Dec 04, 2020 at 09:28:33AM +0800, Tian Tao wrote:
> patch #1 add a new file to implements i2c adapters, #2 read the
> resolution from the edid, if that fails, set the resolution to fixed.
> patch #3 update the destroy callback function to release the i2c adapters.
>
> Tian Tao (3):
>
On Mon, Dec 07, 2020 at 02:31:37PM -0600, Jassi Brar wrote:
> On Mon, Dec 7, 2020 at 12:43 PM Daniele Alessandrelli
> wrote:
> >
> > Hi Rob,
> >
> > Thanks for the feedback.
> >
> > On Mon, 2020-12-07 at 10:01 -0600, Rob Herring wrote:
> > > On Tue, Dec 01, 2020 at 02:34:51PM -0800,
--
--
--
Greeting in Jesus name!!!
Claim of donation funds!!! My name is, Sister Rose Hary from United
States, I'm a widow suffering from Breast Cancer and Stroke, which denied
me a child as a result i may not last till the next two months according
to my doctor report. I'm married to
On Tue, Dec 08, 2020 at 11:04:38PM +0100, Frederic Weisbecker wrote:
> On Tue, Dec 08, 2020 at 10:24:09AM -0800, Paul E. McKenney wrote:
> > > It reduces the code scope running with BH disabled.
> > > Also narrowing down helps to understand what it actually protects.
> >
> > I thought that you
From: Colin King
Date: Mon, 7 Dec 2020 16:12:31 +
> From: Colin Ian King
>
> There is a spelling mistake in the Kconfig help text. Fix it.
>
> Signed-off-by: Colin Ian King
Applied, thanks.
On Tue, Dec 8, 2020 at 3:40 PM Jann Horn wrote:
>
> On Tue, Nov 24, 2020 at 6:50 AM Suren Baghdasaryan wrote:
> > In modern systems it's not unusual to have a system component monitoring
> > memory conditions of the system and tasked with keeping system memory
> > pressure under control. One way
/97] mm: Add
> kmalloc_debug_print_provenance() to print source of memory block
> config: i386-randconfig-s002-20201208 (attached as .config)
> compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
> reproduce:
> # apt-get install sparse
> # sparse version: v0.6.3-179-ga00755aa-dirty
>
Greetings!
(If you are receiving this again, that's because I'm sending from
another domain since my message from @gmx.fr was not forwarded to the
lists.)
With sched-Add-migrate_disable.patch first released in v5.9-rc8-rt14 [1]
linux-rt defines functions migrate_disable and migrate_enable.
They
On 12/07, Eric Biggers wrote:
> On Tue, Dec 08, 2020 at 08:51:45AM +0900, Daeho Jeong wrote:
> > > I am trying to review this but it is very hard, as the f2fs compression
> > > code is
> > > very hard to understand.
> > >
> > > It looks like a 'struct decompress_io_ctx' represents the work to
>
From: Cengiz Can
Date: Mon, 7 Dec 2020 11:14:24 +0300
> `tipc_node_apply_property` does a null check on a `tipc_link_entry`
> pointer but also accesses the same pointer out of the null check block.
>
> This triggers a warning on Coverity Static Analyzer because we're
> implying that `e->link`
On Tue, Dec 08, 2020 at 04:02:16PM -0600, Bjorn Andersson wrote:
> On Tue 08 Dec 06:47 CST 2020, Thierry Reding wrote:
>
> > On Mon, Dec 07, 2020 at 10:44:46PM -0600, Bjorn Andersson wrote:
> > > Some bridge chips, such as the TI SN65DSI86 DSI/eDP bridge, provides
> > > means of generating a PWM
There's a memory leak in afs_parse_source() whereby multiple source=
parameters overwrite fc->source in the fs_context struct without freeing
the previously recorded source.
Fix this by only permitting a single source parameter and rejecting with an
error all subsequent ones.
This was caught by
On Wed, Dec 9, 2020 at 12:29 AM Jakub Kicinski wrote:
>
> On Tue, 8 Dec 2020 17:23:08 -0500 Sven Van Asbroeck wrote:
> > On Tue, Dec 8, 2020 at 2:50 PM Jakub Kicinski wrote:
> > >
> > > >
> > > > +done:
> > > > /* update RX_TAIL */
> > > > lan743x_csr_write(adapter,
-s002-20201208 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.3-179-ga00755aa-dirty
#
https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/commit/?id
Hi Heikki,
Thanks a lot for looking at the patch.
On Tue, Dec 8, 2020 at 1:37 AM Heikki Krogerus
wrote:
>
> On Wed, Dec 02, 2020 at 07:08:47PM -0800, Prashant Malani wrote:
> > Add the Type C bus for plug alternate modes which are being
> > registered via the Type C connector class. This
On Sun, Nov 29, 2020 at 11:48:17PM -0800, Wendy Liang wrote:
> Xilinx AI engine array can be partitioned statically for different
> applications. In the device tree, there will be device node for the AI
> engine device, and device nodes for the statically configured AI engine
> partitions. Each of
On Tue, Nov 24, 2020 at 6:50 AM Suren Baghdasaryan wrote:
> In modern systems it's not unusual to have a system component monitoring
> memory conditions of the system and tasked with keeping system memory
> pressure under control. One way to accomplish that is to kill
> non-essential processes to
On Tue, Dec 8, 2020 at 2:49 PM Darrick J. Wong wrote:
[..]
> > So what's your preferred poison?
> >
> > 1. Corrupt random data in whatever's been mapped into the next page (which
> >is what the helpers currently do)
>
> Please no.
My assertion is that the kernel can't know it's corruption,
On Tue, 8 Dec 2020 10:00:24 -0500
Steven Rostedt wrote:
> On Tue, 8 Dec 2020 21:14:11 +0900
> Masami Hiramatsu wrote:
>
> > On Tue, 1 Dec 2020 16:06:56 -0500
> > Steven Rostedt wrote:
> >
> > > From: Steven Rostedt (VMware)
> > >
> > > A bug was reported about the ftrace ring buffer going
On 12/8/20 3:02 PM, Sven Van Asbroeck wrote:
> Hi Andrew,
>
> On Tue, Dec 8, 2020 at 5:51 PM Andrew Lunn wrote:
>>
>>>
>>> So I assumed that it's a PCIe dma bandwidth issue, but I could be wrong -
>>> I didn't do any PCIe bandwidth measurements.
>>
>> Sometimes it is actually cache operations
Hi Paul,
On Sat, Nov 28, 2020 at 03:33:50PM +0100, Paul Kocialkowski wrote:
...
> + if (ret)
> + goto error_ctrls;
> +
> + /* V4L2 subdev register */
> +
> + ret = v4l2_async_register_subdev_sensor_common(subdev);
The driver's device node may be already available to the
On Wed, Dec 09, 2020 at 08:21:48AM +0900, Punit Agrawal wrote:
> According to the commit log, acd316248205 seems to be only targeted at
> powernow-K8 -
No, it is not targeted at powernow-k8 - acpi-cpufreq.c is what is used
on AMD hw. He means to make acpi-cpufreq's behavior consistent with
On Tue, Dec 08, 2020 at 06:27:39PM -0500, Konrad Rzeszutek Wilk wrote:
> That said if you have the time to take a peek at the x86 bits - that
> would be awesome!
Sure, tomorrow.
Good night. :-)
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
Hi Wei,
Wei Huang writes:
> On 11/25/20 8:48 AM, Punit Agrawal wrote:
>> Re-factor the code to override the firmware provided frequency domain
>> information (via PSD) to localise the checks in one function.
>>
>> No functional change intended.
>>
>> Signed-off-by: Punit Agrawal
>> Cc: Wei
On December 8, 2020 6:01:19 PM EST, Borislav Petkov wrote:
>On Tue, Dec 08, 2020 at 05:22:20PM -0500, Konrad Rzeszutek Wilk wrote:
>> I will fix it up.
>
>So who's picking this up? If not me then I probably should have a
>detailed look at the x86 bits before it goes in...
I was planning to pick
On Tue, 8 Dec 2020 17:23:08 -0500 Sven Van Asbroeck wrote:
> On Tue, Dec 8, 2020 at 2:50 PM Jakub Kicinski wrote:
> >
> > >
> > > +done:
> > > /* update RX_TAIL */
> > > lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
> > > rx_tail_flags |
Hi Mike,
On 2020-12-07 16:41, Mike Galbraith wrote:
On Mon, 2020-12-07 at 16:21 +0100, Vitaly Wool wrote:
On Mon, Dec 7, 2020 at 1:34 PM Mike Galbraith wrote:
Unfortunately, that made zero difference.
Okay, I suggest that you submit the patch that changes read_lock() to
write_lock() in
Hi Rafael,
"Rafael J. Wysocki" writes:
> On Fri, Dec 4, 2020 at 11:45 PM Punit Agrawal wrote:
>>
>> Hi Rafael,
>>
>> Punit Agrawal writes:
>>
>> > Hi,
>> >
>> > While looking into Giovanni's patches to enable frequency invariance
>> > on AMD systems[0], I noticed an issue with initialising
Randy Dunlap wrote:
> Here's the syzbot reproducer:
> https://syzkaller.appspot.com/x/repro.c?x=129ca3d650
>
> The "interesting" mount params are:
> source=%^]$[+%](${:\017k[)-:,source=%^]$[+.](%{:\017\200[)-:,\000
>
> There is no other AFS activity: nothing mounted, no cells known
On Mon, Nov 30, 2020 at 11:13:03AM +0530, Yash Shah wrote:
> The L2 cache controller in SiFive FU740 has 4 ECC interrupt sources as
> compared to 3 in FU540. Update the DT documentation accordingly with
> "compatible" and "interrupt" property changes.
'dt-bindings: riscv: ...' for the subject.
>
Borislav Petkov writes:
> On Mon, Dec 07, 2020 at 04:07:52PM -0600, Wei Huang wrote:
>> I think we shouldn't override zen2 if _PSD is correct. In my opinion,
>> there are two approaches:
>>
>> * Keep override_acpi_psd()
>> Let us keep the original quirk and override_acpi_psd() function. Over
>>
Don't use an O(nm) algorithm* and make it more readable by using a dict.
*Most obviously, it does a nested for-loop over the entire other config.
A bit more subtle, it calls .entries(), which constructs a set from the
list for _every_ outer iteration.
Signed-off-by: Daniel Latypov
---
Hi, Luca,
On Tue, 8 Dec 2020 at 16:27, Coelho, Luciano wrote:
>
> On Tue, 2020-12-08 at 11:27 +, Rui Salvaterra wrote:
> >
> > [ 3174.003910] iwlwifi :02:00.0: RF_KILL bit toggled to disable radio.
> > [ 3174.003913] iwlwifi :02:00.0: reporting RF_KILL (radio disabled)
>
> It looks
On 12/8/20 2:54 PM, David Howells wrote:
> Randy Dunlap wrote:
>
>>> Now the backtrace only shows what the state was when the string was
>>> allocated;
>>> it doesn't show what happened to it after that, so another possibility is
>>> that
>>> the filesystem being mounted nicked what
On 08/12/2020 22:51, Martin K. Petersen wrote:
Julia,
This solves the problem. Starting from 5.10-rc7 and doing this revert, I
get a kernel that boots.
Hi Julia,
Can you also please test Ming's patchset here (without the megaraid sas
revert) when you get a chance:
On Tue, 8 Dec 2020 16:54:33 -0500 Sven Van Asbroeck wrote:
> > > Tested with iperf3 on a freescale imx6 + lan7430, both sides
> > > set to mtu 1500 bytes.
> > >
> > > Before:
> > > [ ID] Interval Transfer Bandwidth Retr
> > > [ 4] 0.00-20.00 sec 483 MBytes 203 Mbits/sec
Hello,
On Tue, Dec 08, 2020 at 09:58:32AM -0800, Randy Dunlap wrote:
> On 12/8/20 9:54 AM, Jonathan Corbet wrote:
> > On Wed, 2 Dec 2020 16:32:43 +0100
> > Mathieu Chouquet-Stringer wrote:
> >> Signed-off-by: Mathieu Chouquet-Stringer
> >
> > Hearing no objection, I've applied this.
Hi, Jakub,
On Tue, 8 Dec 2020 at 16:06, Jakub Kicinski wrote:
>
> Just to confirm - is this a regression in 5.10-rc? Does 5.9 work
> smoothly in the problematic scenario?
Good question. It's definitely a regression, though I don't remember
exactly the last working version I had. I *think* 5.9
On Tue, 8 Dec 2020 18:02:30 -0500 Sven Van Asbroeck wrote:
> On Tue, Dec 8, 2020 at 5:51 PM Andrew Lunn wrote:
> > > So I assumed that it's a PCIe dma bandwidth issue, but I could be wrong -
> > > I didn't do any PCIe bandwidth measurements.
> >
> > Sometimes it is actually cache operations
The pull request you sent on Tue, 8 Dec 2020 21:48:23 +:
> git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git fixes
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/c6f7e1510b872c281ff603a3108c084b6548d35c
Thank you!
--
Deet-doot-dot, I am a bot.
On Wednesday, September 23, 2020 3:22:15 AM PST Pali Rohár wrote:
> On Monday 14 September 2020 20:18:27 Joseph Hwang wrote:
> > On Thu, Sep 10, 2020 at 4:18 PM Pali Rohár wrote:
> > > And this part of code which you write is Realtek specific.
> >
> > We currently only have Intel and Realtek
Hi Andrew,
On Tue, Dec 8, 2020 at 5:51 PM Andrew Lunn wrote:
>
> >
> > So I assumed that it's a PCIe dma bandwidth issue, but I could be wrong -
> > I didn't do any PCIe bandwidth measurements.
>
> Sometimes it is actually cache operations which take all the
> time. This needs to invalidate the
On Tue, Dec 08, 2020 at 05:22:20PM -0500, Konrad Rzeszutek Wilk wrote:
> I will fix it up.
So who's picking this up? If not me then I probably should have a
detailed look at the x86 bits before it goes in...
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
On Tue, Dec 08 2020 at 13:11, Michael Ellerman wrote:
> "Enrico Weigelt, metux IT consult" writes:
>> All archs, except Alpha, print out the irq number in hex, but the message
>> looks like it was a decimal number, which is quite confusing. Fixing this
>> by adding "0x" prefix.
>
> Arguably
Linus,
> I'll take this as an "ack" for the revert, though ;)
Indeed!
--
Martin K. Petersen Oracle Linux Engineering
On 12/8/20 3:56 PM, Linus Torvalds wrote:
> On Tue, Dec 8, 2020 at 2:54 PM Martin K. Petersen
> wrote:
>>
>> Oh, I just realized the megaraid patch went in through block.
>
> I'll take this as an "ack" for the revert, though ;)
You can add mine too, if you wish.
We'll follow up in 5.11 time
On Tue, Dec 8, 2020 at 2:54 PM Martin K. Petersen
wrote:
>
> Oh, I just realized the megaraid patch went in through block.
I'll take this as an "ack" for the revert, though ;)
Linus
Randy Dunlap wrote:
> > Now the backtrace only shows what the state was when the string was
> > allocated;
> > it doesn't show what happened to it after that, so another possibility is
> > that
> > the filesystem being mounted nicked what vfs_parse_fs_param() had rightfully
> > stolen,
On Tue, Dec 08, 2020 at 02:45:55PM -0800, Darrick J. Wong wrote:
> On Tue, Dec 08, 2020 at 10:32:34PM +, Matthew Wilcox wrote:
> > On Tue, Dec 08, 2020 at 02:23:10PM -0800, Dan Williams wrote:
> > > On Tue, Dec 8, 2020 at 1:51 PM Matthew Wilcox wrote:
> > > >
> > > > On Tue, Dec 08, 2020 at
> btrfs' free space cache v1 is going to be removed some time in the
> future so introducing kernel-wide change just for its own sake is a bit
> premature
But, I think it's not quite a kernel-wide change just add the
correspondent function to find_last_bit.
So, if we add this feature, maybe some
Jens,
> Thanks for testing! Linus, do you just want to revert this, or do you
> want me to queue it up?
Oh, I just realized the megaraid patch went in through block.
--
Martin K. Petersen Oracle Linux Engineering
On Tue, Dec 8, 2020 at 2:47 PM Jens Axboe wrote:
>
> On Tue, Dec 8, 2020 at 3:42 PM Julia Lawall wrote:
> >
> > This solves the problem. Starting from 5.10-rc7 and doing this
> > revert, I get a kernel that boots.
>
> Thanks for testing! Linus, do you just want to revert this, or do you
> want
> That's a good question. I used perf to create a flame graph of what
> the cpu was doing when receiving data at high speed. It showed that
> __dma_page_dev_to_cpu took up most of the cpu time. Which is triggered
> by dma_unmap_single(9K, DMA_FROM_DEVICE).
>
> So I assumed that it's a PCIe dma
Julia,
> This solves the problem. Starting from 5.10-rc7 and doing this revert, I
> get a kernel that boots.
Thanks for testing!
I'll go ahead and revert 103fbf8e4020 in 5.10/scsi-fixes. We can revisit
this change in 5.11 when Ming's fixes are in place.
--
Martin K. Petersen Oracle
When the upper layer instruct us to connect (or disconnect), but we have
already connected (or disconnected), consider this operation successful
rather than failed.
This can help the upper layer to correct its record about whether we are
connected or not here in layer 2.
The upper layer may not
On Tue, Dec 08, 2020 at 10:32:34PM +, Matthew Wilcox wrote:
> On Tue, Dec 08, 2020 at 02:23:10PM -0800, Dan Williams wrote:
> > On Tue, Dec 8, 2020 at 1:51 PM Matthew Wilcox wrote:
> > >
> > > On Tue, Dec 08, 2020 at 01:32:55PM -0800, Ira Weiny wrote:
> > > > On Mon, Dec 07, 2020 at
On Tue, Dec 8, 2020 at 3:42 PM Julia Lawall wrote:
> On Tue, 8 Dec 2020, Linus Torvalds wrote:
>
> > On Tue, Dec 8, 2020 at 1:14 PM John Garry wrote:
> > >
> > > JFYI, About "scsi: megaraid_sas: Added support for shared host tagset
> > > for cpuhotplug", we did have an issue reported here
On Tue, 8 Dec 2020, Linus Torvalds wrote:
> On Tue, Dec 8, 2020 at 1:14 PM John Garry wrote:
> >
> > JFYI, About "scsi: megaraid_sas: Added support for shared host tagset
> > for cpuhotplug", we did have an issue reported here already from Qian
> > about a boot hang:
>
> Hmm. That does sound
Hello RT-list!
I'm pleased to announce the 4.9.247-rt162 stable release.
You can get this release via the git tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git
branch: v4.9-rt
Head SHA1: 35e7b01017420a52fa269101a09a0a93815ec65d
Or to build 4.9.247-rt162
On 12/7/20 3:56 AM, Hannes Reinecke wrote:
> On 12/4/20 3:26 PM, Brian King wrote:
>> On 12/2/20 11:27 AM, Tyrel Datwyler wrote:
>>> On 12/2/20 7:14 AM, Brian King wrote:
On 12/1/20 6:53 PM, Tyrel Datwyler wrote:
> Introduce several new vhost fields for managing MQ state of the adapter
Hello,
syzbot found the following issue on:
HEAD commit:0477e928 Linux 5.10-rc7
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14ef3f4550
kernel config: https://syzkaller.appspot.com/x/.config?x=4305fa9ea70c7a9f
dashboard link:
On Tue, Dec 08, 2020 at 02:23:10PM -0800, Dan Williams wrote:
> On Tue, Dec 8, 2020 at 1:51 PM Matthew Wilcox wrote:
> >
> > On Tue, Dec 08, 2020 at 01:32:55PM -0800, Ira Weiny wrote:
> > > On Mon, Dec 07, 2020 at 03:49:55PM -0800, Dan Williams wrote:
> > > > On Mon, Dec 7, 2020 at 3:40 PM
On 2020-12-09, Sergey Senozhatsky wrote:
>> Sigh, atomic64_read() uses a spin lock in the generic implementation
>> that is used on some architectures.
>
> Oh... So on those archs prb is not lockless in fact, it actually
> takes the spin_lock each time we read the descriptor state?
>
>
>
> Based on the earlier thread you had referenced and his comment here it
> sounds like while adding time will work for most cases, it doesn't
> solve it for all cases. The problem is as a vendor you are usually
> stuck looking for a solution that will work for all cases which can
> lead to
On Sat, Nov 14, 2020 at 1:48 AM Jiaxun Yang wrote:
> Thus I do think it shouldn't be retired as for now. If nobody comes in
> I'd also willing to maintain
Hi Jiaxun and Hancai,
I sent a patch to add you to MAINTAINERS for goldfish-rtc. Could you
please ack there?
Regards,
Roman.
This patch fixes the checkpatch warning:
WARNING: Possible repeated word: 'each'
1712: FILE: qlge.h:1712.h
+ * that are each each 64-bits in length. There are a total of
Signed-off-by: Nicholas Warfield
---
drivers/staging/qlge/qlge.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff
Hi,
On Wed, Dec 2, 2020 at 12:02 PM Stephen Boyd wrote:
>
> This DT property can be 0, 16, and then 64, but not 32. The math here
> doesn't recognize this slight bump in the power of 2 numbers and
> translates a DT property of 64 into the register value '3' when it
> really should be '2'. Fix it
On Tue, Dec 8, 2020 at 2:50 PM Jakub Kicinski wrote:
>
> >
> > +done:
> > /* update RX_TAIL */
> > lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
> > rx_tail_flags | rx->last_tail);
> > -done:
> > +
>
> I assume this rings the doorbell to let the
On Tue, Dec 8, 2020 at 1:51 PM Matthew Wilcox wrote:
>
> On Tue, Dec 08, 2020 at 01:32:55PM -0800, Ira Weiny wrote:
> > On Mon, Dec 07, 2020 at 03:49:55PM -0800, Dan Williams wrote:
> > > On Mon, Dec 7, 2020 at 3:40 PM Matthew Wilcox wrote:
> > > >
> > > > On Mon, Dec 07, 2020 at 03:34:44PM
On Tue, Dec 8, 2020 at 1:33 PM Ira Weiny wrote:
>
> On Mon, Dec 07, 2020 at 03:49:55PM -0800, Dan Williams wrote:
> > On Mon, Dec 7, 2020 at 3:40 PM Matthew Wilcox wrote:
> > >
> > > On Mon, Dec 07, 2020 at 03:34:44PM -0800, Dan Williams wrote:
> > > > On Mon, Dec 7, 2020 at 3:27 PM Matthew
On Mon, Dec 07, 2020 at 11:10:57PM +, Ashish Kalra wrote:
> From: Ashish Kalra
>
> For SEV, all DMA to and from guest has to use shared (un-encrypted) pages.
> SEV uses SWIOTLB to make this happen without requiring changes to device
> drivers. However, depending on workload being run, the
On Tue, Dec 8, 2020 at 10:10 PM 'Nick Desaulniers' via Clang Built
Linux wrote:
>
> On Tue, Dec 8, 2020 at 1:00 PM Arnd Bergmann wrote:
> >
> > On Tue, Dec 8, 2020 at 5:43 PM 'Sami Tolvanen' via Clang Built Linux
> > wrote:
> > >
> > > On Tue, Dec 8, 2020 at 4:15 AM Arnd Bergmann wrote:
> > >
On Tue, Dec 8, 2020 at 7:21 PM 'Nick Desaulniers' via Clang Built
Linux wrote:
>
> On Tue, Dec 8, 2020 at 6:26 AM Arnd Bergmann wrote:
> >
> > On Mon, Dec 7, 2020 at 11:28 PM 'Nick Desaulniers' via Clang Built
> > Linux wrote:
> Hmm...no warnings for me with t
On Mon, Dec 07, 2020 at 01:42:04PM -0800, Jianxiong Gao wrote:
> NVMe driver and other applications depend on the data offset
> to operate correctly. Currently when unaligned data is mapped via
> SWIOTLB, the data is mapped as slab aligned with the SWIOTLB. When
> booting with --swiotlb=force
Syzbot reported a stack overflow in bitmap_from_arr32() called from
ethnl_parse_bitset() when bitset from netlink message is longer than
target bitmap length. While ethnl_compact_sanity_checks() makes sure that
trailing part is all zeros (i.e. the request does not try to touch bits
kernel does not
From: Ashish Kalra
Reset the host's page encryption bitmap related to kernel
specific page encryption status settings before we load a
new kernel by kexec. We cannot reset the complete
page encryption bitmap here as we need to retain the
UEFI/OVMF firmware specific settings.
The host's page
From: Ashish Kalra
Add new KVM_FEATURE_SEV_LIVE_MIGRATION feature for guest to check
for host-side support for SEV live migration. Also add a new custom
MSR_KVM_SEV_LIVE_MIG_EN for guest to enable the SEV live migration
feature.
Signed-off-by: Ashish Kalra
---
Documentation/virt/kvm/cpuid.rst
On Tue, Dec 8, 2020 at 9:20 PM Florent Revest wrote:
>
> This needs two new helpers, one that works in a sleepable context (using
> sock_gen_cookie which disables/enables preemption) and one that does not
> (for performance reasons). Both take a struct sock pointer and need to
> check it for
From: Ashish Kalra
Introduce a new AMD Memory Encryption GUID which is currently
used for defining a new UEFI enviroment variable which indicates
UEFI/OVMF support for the SEV live migration feature. This variable
is setup when UEFI/OVMF detects host/hypervisor support for SEV
live migration and
From: Brijesh Singh
The ioctl can be used to set page encryption bitmap for an
incoming guest.
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Paolo Bonzini
Cc: "Radim Krčmář"
Cc: Joerg Roedel
Cc: Borislav Petkov
Cc: Tom Lendacky
Cc: x...@kernel.org
Cc: k...@vger.kernel.org
From: Ashish Kalra
Add support for static allocation of the unified Page encryption bitmap by
extending kvm_arch_commit_memory_region() callack to add svm specific x86_ops
which can read the userspace provided memory region/memslots and calculate
the amount of guest RAM managed by the KVM and
From: Ashish Kalra
For all explicitly unecrypted guest memory regions such as S/W IOTLB
bounce buffers, dma_decrypted() allocated regions and for guest regions
marked as "__bss_decrypted", ensure that DBG_DECRYPT API calls are
bypassed for such regions. The guest memory regions encryption status
From: Ashish Kalra
Ensure that _bss_decrypted section variables such as hv_clock_boot and
wall_clock are marked as decrypted in the page encryption bitmap if
sev live migration is supported.
Signed-off-by: Ashish Kalra
---
arch/x86/kernel/kvmclock.c | 12
1 file changed, 12
From: Ashish Kalra
The guest support for detecting and enabling SEV Live migration
feature uses the following logic :
- kvm_init_plaform() checks if its booted under the EFI
- If not EFI,
i) check for the KVM_FEATURE_CPUID
ii) if CPUID reports that migration is support then
On Intel systems that support ACPI Low Power Idle it has been observed
that the L1 Substate capability can return disabled after a s2idle
cycle. This causes the loss of L1 Substate support during runtime
leading to higher power consumption. Add save/restore of the L1SS
control registers.
From: Brijesh Singh
Invoke a hypercall when a memory region is changed from encrypted ->
decrypted and vice versa. Hypervisor needs to know the page encryption
status during the guest migration.
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Paolo Bonzini
Cc: "Radim Krčmář"
From: Brijesh Singh
KVM hypercall framework relies on alternative framework to patch the
VMCALL -> VMMCALL on AMD platform. If a hypercall is made before
apply_alternative() is called then it defaults to VMCALL. The approach
works fine on non SEV guest. A VMCALL would causes #UD, and hypervisor
From: Brijesh Singh
The ioctl can be used to retrieve page encryption bitmap for a given
gfn range.
Return the correct bitmap as per the number of pages being requested
by the user. Ensure that we only copy bmap->num_pages bits in the
userspace buffer, if bmap->num_pages is not byte aligned we
From: Brijesh Singh
The command finalize the guest receiving process and make the SEV guest
ready for the execution.
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Paolo Bonzini
Cc: "Radim Krčmář"
Cc: Joerg Roedel
Cc: Borislav Petkov
Cc: Tom Lendacky
Cc: x...@kernel.org
From: Brijesh Singh
The command is used for copying the incoming buffer into the
SEV guest memory space.
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Paolo Bonzini
Cc: "Radim Krčmář"
Cc: Joerg Roedel
Cc: Borislav Petkov
Cc: Tom Lendacky
Cc: x...@kernel.org
Cc:
From: Brijesh Singh
This hypercall is used by the SEV guest to notify a change in the page
encryption status to the hypervisor. The hypercall should be invoked
only when the encryption attribute is changed from encrypted -> decrypted
and vice versa. By default all guest pages are considered
From: Brijesh Singh
The command is used to create the encryption context for an incoming
SEV guest. The encryption context can be later used by the hypervisor
to import the incoming data into the SEV guest memory space.
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Paolo
From: Brijesh Singh
The command is used for encrypting the guest memory region using the encryption
context created with KVM_SEV_SEND_START.
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Paolo Bonzini
Cc: "Radim Krčmář"
Cc: Joerg Roedel
Cc: Borislav Petkov
Cc: Tom Lendacky
ames E.J. Bottomley"
Cc: "Martin K. Petersen"
---
Found in linux-next but applies to mainline as well.
I'm not sure about which commit ID to use in Fixes:.
drivers/scsi/cxgbi/cxgb4i/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- linux-next-20201208.orig/drivers/scsi/
On Tue, Dec 08, 2020 at 10:24:09AM -0800, Paul E. McKenney wrote:
> > It reduces the code scope running with BH disabled.
> > Also narrowing down helps to understand what it actually protects.
>
> I thought that you would call out unnecessarily delaying other softirq
> handlers. ;-)
>
> But if
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