When a memory device, such as CXL1.1 type3 memory, is emulated as
normal memory (E820_TYPE_RAM), the memory device is indistinguishable
from normal DRAM in terms of memory tiering with the current implementation.
The current memory tiering assigns all detected normal memory nodes
to the same DRAM t
Since different memory devices require finding, allocating, and putting
memory types, these common steps are abstracted in this patch,
enhancing the scalability and conciseness of the code.
Signed-off-by: Ho-Ren (Jack) Chuang
---
drivers/dax/kmem.c | 20 ++--
include/li
The current implementation treats emulated memory devices, such as
CXL1.1 type3 memory, as normal DRAM when they are emulated as normal memory
(E820_TYPE_RAM). However, these emulated devices have different
characteristics than traditional DRAM, making it important to
distinguish them. Thus, we mod
On 3/27/24 14:08, Gavin Shan wrote:
On 3/27/24 12:44, Jason Wang wrote:
On Wed, Mar 27, 2024 at 10:34 AM Jason Wang wrote:
On Wed, Mar 27, 2024 at 7:39 AM Gavin Shan wrote:
A smp_rmb() has been missed in vhost_vq_avail_empty(), spotted by
Will Deacon . Otherwise, it's not ensured the
availa
On Wed, Mar 27, 2024 at 3:35 PM Gavin Shan wrote:
>
> On 3/27/24 14:08, Gavin Shan wrote:
> > On 3/27/24 12:44, Jason Wang wrote:
> >> On Wed, Mar 27, 2024 at 10:34 AM Jason Wang wrote:
> >>> On Wed, Mar 27, 2024 at 7:39 AM Gavin Shan wrote:
>
> A smp_rmb() has been missed in vhost_vq_
By doing this, we are able to filter tasks by tgid while we are
tracing wakeup events by ebpf or other methods.
For example, when we care about tracing a user space process (which has
uncertain number of LWPs, i.e, pids) to monitor its wakeup latency,
without tgid available in sched_wakeup tracepo
On Thu, Mar 21, 2024 at 3:00 PM Michael S. Tsirkin wrote:
>
> On Wed, Mar 20, 2024 at 06:19:12PM +0800, Wang Rong wrote:
> > From: Rong Wang
> >
> > Once enable iommu domain for one device, the MSI
> > translation tables have to be there for software-managed MSI.
> > Otherwise, platform with soft
On Tue, Mar 26, 2024 at 03:46:29PM +, Will Deacon wrote:
> On Tue, Mar 26, 2024 at 11:43:13AM +, Will Deacon wrote:
> > On Tue, Mar 26, 2024 at 09:38:55AM +, Keir Fraser wrote:
> > > On Tue, Mar 26, 2024 at 03:49:02AM -0400, Michael S. Tsirkin wrote:
> > > > > Secondly, the debugging co
On Wed, Mar 27, 2024 at 09:38:45AM +1000, Gavin Shan wrote:
> A smp_rmb() has been missed in vhost_vq_avail_empty(), spotted by
> Will Deacon . Otherwise, it's not ensured the
> available ring entries pushed by guest can be observed by vhost
> in time, leading to stale available ring entries fetche
The patch below does not apply to the 6.7-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to .
Thanks,
Sasha
-- original commit in Linus's tree --
>From 2
The patch below does not apply to the 6.6-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to .
Thanks,
Sasha
-- original commit in Linus's tree --
>From 2
The patch below does not apply to the 6.1-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to .
Thanks,
Sasha
-- original commit in Linus's tree --
>From 3
The patch below does not apply to the 6.1-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to .
Thanks,
Sasha
-- original commit in Linus's tree --
>From 2
The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to .
Thanks,
Sasha
-- original commit in Linus's tree --
>From
The patch below does not apply to the 5.10-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to .
Thanks,
Sasha
-- original commit in Linus's tree --
>From
The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to .
Thanks,
Sasha
-- original commit in Linus's tree --
>From
The patch below does not apply to the 5.4-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to .
Thanks,
Sasha
-- original commit in Linus's tree --
>From 3
The patch below does not apply to the 5.4-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to .
Thanks,
Sasha
-- original commit in Linus's tree --
>From 7
The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to .
Thanks,
Sasha
-- original commit in Linus's tree --
>From
Il 21/03/24 16:25, Mathieu Poirier ha scritto:
Good day,
On Thu, Mar 21, 2024 at 09:46:13AM +0100, AngeloGioacchino Del Regno wrote:
The IPI buffer location is read from the firmware that we load to the
System Companion Processor, and it's not granted that both the SRAM
(L2TCM) size that is def
Il 21/03/24 16:27, Mathieu Poirier ha scritto:
On Thu, Mar 21, 2024 at 09:46:14AM +0100, AngeloGioacchino Del Regno wrote:
When probing multi-core SCP, this driver is parsing all sub-nodes of
the scp-cluster node, but one of those could be not an actual SCP core
and that would make the entire SC
On Mon, 2024-02-05 at 13:06 -0800, Haitao Huang wrote:
> The scripts rely on cgroup-tools package from libcgroup [1].
>
> To run selftests for epc cgroup:
>
> sudo ./run_epc_cg_selftests.sh
>
> To watch misc cgroup 'current' changes during testing, run this in a
> separate terminal:
>
> ./watch
On Wed, 2024-03-27 at 02:42 +, Edgecombe, Rick P wrote:
> On Tue, 2024-03-26 at 13:57 +0200, Jarkko Sakkinen wrote:
> > In which conditions which path is used during the initialization of
> > mm
> > and why is this the case? It is an open claim in the current form.
>
> There is an arch_pick_mm
On Wed, Mar 27, 2024 at 10:27:58AM +0800, Heng Qi wrote:
>
>
> 在 2024/3/26 下午11:19, Breno Leitao 写道:
> > There is a bug when setting the RSS options in virtio_net that can break
> > the whole machine, getting the kernel into an infinite loop.
> >
> > Running the following command in any QEMU vir
Hello Xuan,
On Wed, Mar 27, 2024 at 09:37:43AM +0800, Xuan Zhuo wrote:
> On Tue, 26 Mar 2024 08:19:08 -0700, Breno Leitao wrote:
> > Do not set virtnet_info->rss_indir_table_size if RSS is not available
> > for the device.
> >
> > Currently, rss_indir_table_size is set if either has_rss or
> > ha
It has been seen that for some network mac drivers (i.e. lan78xx) the
related module for the phy is loaded dynamically depending on the current
hardware. In this case, the associated phy is read using mdio bus and then
the associated phy module is loaded during runtime (kernel function
phy_request_
On Wed, 27 Mar 2024 16:50:57 +0800
Tio Zhang wrote:
> By doing this, we are able to filter tasks by tgid while we are
> tracing wakeup events by ebpf or other methods.
>
> For example, when we care about tracing a user space process (which has
> uncertain number of LWPs, i.e, pids) to monitor it
On Tue Mar 26, 2024 at 8:42 PM EET, Conor Dooley wrote:
> On Tue, Mar 26, 2024 at 03:46:16PM +0200, Jarkko Sakkinen wrote:
> > Tacing with kprobes while running a monolithic kernel is currently
> > impossible due the kernel module allocator dependency.
> >
> > Address the issue by implementing tex
On Wed Mar 27, 2024 at 2:55 PM EET, Jarkko Sakkinen wrote:
> On Mon, 2024-02-05 at 13:06 -0800, Haitao Huang wrote:
> > The scripts rely on cgroup-tools package from libcgroup [1].
> >
> > To run selftests for epc cgroup:
> >
> > sudo ./run_epc_cg_selftests.sh
> >
> > To watch misc cgroup 'curre
> > Masami,
> >
> > Given the discussion around per-cpu rw semaphore and need for
> > (internal) batched attachment API for uprobes, do you think you can
> > apply this patch as is for now? We can then gain initial improvements
> > in scalability that are also easy to backport, and Jonathan will w
On Tue, Mar 26, 2024 at 08:18:23PM +0100, Arnaud POULIQUEN wrote:
> Hello Mathieu,
>
> On 3/25/24 17:46, Mathieu Poirier wrote:
> > On Fri, Mar 08, 2024 at 03:47:05PM +0100, Arnaud Pouliquen wrote:
> >> Add a remoteproc TEE (Trusted Execution Environment) driver
> >> that will be probed by the TEE
On Tue, Mar 26, 2024 at 08:31:33PM +0100, Arnaud POULIQUEN wrote:
>
>
> On 3/25/24 17:51, Mathieu Poirier wrote:
> > On Fri, Mar 08, 2024 at 03:47:08PM +0100, Arnaud Pouliquen wrote:
> >> The new TEE remoteproc device is used to manage remote firmware in a
> >> secure, trusted context. The 'st,st
vhost_get_vq_desc (correctly) uses smp_rmb to order
avail ring reads after index reads.
However, over time we added two more places that read the
index and do not bother with barriers.
Since vhost_get_vq_desc when it was written assumed it is the
only reader when it sees a new index value is cached
On 26.03.2024 1:11 PM, Stanislav Jakubek wrote:
> Add a device tree for the Motorola Moto G (2013) smartphone based
> on the Qualcomm MSM8226 SoC.
>
> Initially supported features:
> - Buttons (Volume Down/Up, Power)
> - eMMC
> - Hall Effect Sensor
> - SimpleFB display
> - TMP108 tempera
On Wed, Mar 27, 2024 at 01:26:23PM -0400, Michael S. Tsirkin wrote:
> vhost_get_vq_desc (correctly) uses smp_rmb to order
> avail ring reads after index reads.
> However, over time we added two more places that read the
> index and do not bother with barriers.
> Since vhost_get_vq_desc when it was
On Wed, Mar 27, 2024 at 07:52:02PM +, Will Deacon wrote:
> On Wed, Mar 27, 2024 at 01:26:23PM -0400, Michael S. Tsirkin wrote:
> > vhost_get_vq_desc (correctly) uses smp_rmb to order
> > avail ring reads after index reads.
> > However, over time we added two more places that read the
> > index
This patchset updates the mce_record tracepoint so that the recently added
fields of struct mce are exported through it to userspace.
The first patch adds PPIN (Protected Processor Inventory Number) field to
the tracepoint.
The second patch adds the microcode field (Microcode Revision) to the
tra
Machine Check Error information from struct mce is exported to userspace
through the mce_record tracepoint.
Currently, however, the PPIN (Protected Processor Inventory Number) field
of struct mce is not exported through the tracepoint.
Export PPIN through the tracepoint as it provides a unique id
Currently, the microcode field (Microcode Revision) of struct mce is not
exported to userspace through the mce_record tracepoint.
Knowing the microcode version on which the MCE was received is critical
information for debugging. If the version is not recorded, later attempts
to acquire the version
> Export PPIN through the tracepoint as it provides a unique identifier for
> the system (or socket in case of multi-socket systems) on which the MCE
> has been received.
>
> Signed-off-by: Avadhut Naik
> Reviewed-by: Sohil Mehta
> Reviewed-by: Steven Rostedt (Google)
Reviewed-by: Tony Luck
> Export microcode version through the tracepoint to prevent ambiguity over
> the active version on the system when the MCE was received.
>
> Signed-off-by: Avadhut Naik
> Reviewed-by: Sohil Mehta
> Reviewed-by: Steven Rostedt (Google)
Reviewed-by: Tony Luck
On Tue, Mar 26, 2024 at 08:15:56PM +0100, Johannes Berg wrote:
> From: Johannes Berg
>
> The way __print_symbolic() works is limited and inefficient
> in multiple ways:
> - you can only use it with a static list of symbols, but
>e.g. the SKB dropreasons are now a dynamic list
>
> - it buil
On Wed, 2024-03-27 at 21:11 +, Simon Horman wrote:
>
> I'm seeing some allmodconfig build problems with this applied on top of
> net-next.
> ./include/trace/stages/init.h:30: warning: "TRACE_DEFINE_SYM_FNS" redefined
> ./include/trace/stages/init.h:54: warning: "TRACE_DEFINE_SYM_LIST" redefi
On 16.02.2024 11:36 AM, Luca Weiss wrote:
> On Mon Jan 8, 2024 at 11:45 PM CET, Dmitry Baryshkov wrote:
>> On Mon, 8 Jan 2024 at 16:23, Luca Weiss wrote:
>>>
>>> On Mon Jan 8, 2024 at 3:18 PM CET, Konrad Dybcio wrote:
On 8.01.2024 14:49, Luca Weiss wrote:
> When num-channels and qcom,num-
On 3/27/2024 1:54 PM, Avadhut Naik wrote:
> - TP_printk("CPU: %d, MCGc/s: %llx/%llx, MC%d: %016Lx, IPID: %016Lx,
> ADDR/MISC/SYND: %016Lx/%016Lx/%016Lx, RIP: %02x:<%016Lx>, TSC: %llx, PPIN:
> %llx, PROCESSOR: %u:%x, TIME: %llu, SOCKET: %u, APIC: %x",
> + TP_printk("CPU: %d, MCGc/s: %llx/
On Wed, Mar 27, 2024 at 03:31:01PM -0700, Sohil Mehta wrote:
> On 3/27/2024 1:54 PM, Avadhut Naik wrote:
>
> > - TP_printk("CPU: %d, MCGc/s: %llx/%llx, MC%d: %016Lx, IPID: %016Lx,
> > ADDR/MISC/SYND: %016Lx/%016Lx/%016Lx, RIP: %02x:<%016Lx>, TSC: %llx, PPIN:
> > %llx, PROCESSOR: %u:%x, TIME: %
When the Qemu launched with vhost but without tap vnet_hdr,
vhost tries to copy vnet_hdr from socket iter with size 0
to the page that may contain some trash.
That trash can be interpreted as unpredictable values for
vnet_hdr.
That leads to dropping some packets and in some cases to
stalling vhost
On Wed, 27 Mar 2024 17:06:01 +
Jonthan Haslam wrote:
> > > Masami,
> > >
> > > Given the discussion around per-cpu rw semaphore and need for
> > > (internal) batched attachment API for uprobes, do you think you can
> > > apply this patch as is for now? We can then gain initial improvements
>
The issue was reported by Yihuang Yu on NVidia's grace-hopper (ARM64)
platform. The wrong head (available ring entry) is seen by the guest
when running 'netperf' on the guest and running 'netserver' on another
NVidia's grace-grace machine.
/home/gavin/sandbox/qemu.main/build/qemu-system-aarch64
A smp_rmb() has been missed in vhost_vq_avail_empty(), spotted by
Will. Otherwise, it's not ensured the available ring entries pushed
by guest can be observed by vhost in time, leading to stale available
ring entries fetched by vhost in vhost_get_vq_desc(), as reported by
Yihuang Yu on NVidia's gra
A smp_rmb() has been missed in vhost_enable_notify(), inspired by
Will. Otherwise, it's not ensured the available ring entries pushed
by guest can be observed by vhost in time, leading to stale available
ring entries fetched by vhost in vhost_get_vq_desc(), as reported by
Yihuang Yu on NVidia's gra
All the callers of vhost_get_avail_idx() are concerned to the memory
barrier, imposed by smp_rmb() to ensure the order of the available
ring entry read and avail_idx read.
Improve vhost_get_avail_idx() so that smp_rmb() is executed when
the avail_idx is advanced. With it, the callers needn't to wo
Replace boolean parameters for 'reclaim' in the function
sgx_alloc_epc_page() and its callers with an enum.
Also opportunistically remove non-static declaration of
__sgx_alloc_epc_page() and a typo
Signed-off-by: Haitao Huang
Suggested-by: Jarkko Sakkinen
Suggested-by: Dave Hansen
---
arch/x8
SGX Enclave Page Cache (EPC) memory allocations are separate from normal
RAM allocations, and are managed solely by the SGX subsystem. The existing
cgroup memory controller cannot be used to limit or account for SGX EPC
memory, which is a desirable feature in some environments, e.g., support
for po
From: Kristen Carlson Accardi
The misc cgroup controller (subsystem) currently does not perform
resource type specific action for Cgroups Subsystem State (CSS) events:
the 'css_alloc' event when a cgroup is created and the 'css_free' event
when a cgroup is destroyed.
Define callbacks for those e
From: Kristen Carlson Accardi
The SGX EPC cgroup will reclaim EPC pages when usage in a cgroup reaches
its or ancestor's limit. This requires a walk from the current cgroup up
to the root similar to misc_cg_try_charge(). Export misc_cg_parent() to
enable this walk.
The SGX driver also needs star
From: Kristen Carlson Accardi
Add SGX EPC memory, MISC_CG_RES_SGX_EPC, to be a valid resource type
for the misc controller.
Signed-off-by: Kristen Carlson Accardi
Co-developed-by: Haitao Huang
Signed-off-by: Haitao Huang
Reviewed-by: Jarkko Sakkinen
---
V6:
- Split the original patch into th
From: Kristen Carlson Accardi
SGX Enclave Page Cache (EPC) memory allocations are separate from normal
RAM allocations, and are managed solely by the SGX subsystem. The
existing cgroup memory controller cannot be used to limit or account for
SGX EPC memory, which is a desirable feature in some en
From: Sean Christopherson
Introduce a data structure to wrap the existing reclaimable list and its
spinlock. Each cgroup later will have one instance of this structure to
track EPC pages allocated for processes associated with the same cgroup.
Just like the global SGX reclaimer (ksgxd), an EPC cg
From: Kristen Carlson Accardi
In cases EPC pages need be allocated during a page fault and the cgroup
usage is near its limit, an asynchronous reclamation needs be triggered
to avoid blocking the page fault handling.
Create a workqueue, corresponding work item and function definitions
for EPC cg
From: Kristen Carlson Accardi
When a cgroup usage reaches its limit, and it is to be charged, i.e.,
sgx_cgroup_try_charge() called for new allocations, the cgroup needs to
reclaim pages from its LRU or LRUs of its descendants to make room for
any new allocations. This patch adds the basic buildin
Enclave Page Cache(EPC) memory can be swapped out to regular system
memory, and the consumed memory should be charged to a proper
mem_cgroup. Currently the selection of mem_cgroup to charge is done in
sgx_encl_get_mem_cgroup(). But it considers all contexts other than the
ksgxd thread are user proc
From: Kristen Carlson Accardi
To determine if any page available for reclamation at the global level,
only checking for emptiness of the global LRU is not adequate when pages
are tracked in multiple LRUs, one per cgroup. For this purpose, create a
new helper, sgx_can_reclaim(), currently only che
From: Kristen Carlson Accardi
Previous patches have implemented all infrastructure needed for
per-cgroup EPC page tracking and reclaiming. But all reclaimable EPC
pages are still tracked in the global LRU as sgx_lru_list() returns hard
coded reference to the global LRU.
Change sgx_lru_list() to
From: Sean Christopherson
Add initial documentation of how to regulate the distribution of
SGX Enclave Page Cache (EPC) memory via the Miscellaneous cgroup
controller.
Signed-off-by: Sean Christopherson
Co-developed-by: Kristen Carlson Accardi
Signed-off-by: Kristen Carlson Accardi
Co-develop
The scripts rely on cgroup-tools package from libcgroup [1].
To run selftests for epc cgroup:
sudo ./run_epc_cg_selftests.sh
To watch misc cgroup 'current' changes during testing, run this in a
separate terminal:
./watch_misc_for_tests.sh current
With different cgroups, the script starts one o
On Thu, 22 Feb 2024 16:24:47 -0600, Huang, Kai wrote:
On 23/02/2024 9:12 am, Haitao Huang wrote:
On Wed, 21 Feb 2024 04:48:58 -0600, Huang, Kai
wrote:
On Wed, 2024-02-21 at 00:23 -0600, Haitao Huang wrote:
StartHi Kai
On Tue, 20 Feb 2024 03:52:39 -0600, Huang, Kai
wrote:
[...]
>
>
On 3/27/24 22:07, Michael S. Tsirkin wrote:
On Wed, Mar 27, 2024 at 09:38:45AM +1000, Gavin Shan wrote:
A smp_rmb() has been missed in vhost_vq_avail_empty(), spotted by
Will Deacon . Otherwise, it's not ensured the
available ring entries pushed by guest can be observed by vhost
in time, leading
On 3/27/24 17:42, Jason Wang wrote:
On Wed, Mar 27, 2024 at 3:35 PM Gavin Shan wrote:
On 3/27/24 14:08, Gavin Shan wrote:
On 3/27/24 12:44, Jason Wang wrote:
On Wed, Mar 27, 2024 at 10:34 AM Jason Wang wrote:
On Wed, Mar 27, 2024 at 7:39 AM Gavin Shan wrote:
A smp_rmb() has been missed
From: Kristen Carlson Accardi
The functions, sgx_{mark,unmark}_page_reclaimable(), manage the tracking
of reclaimable EPC pages: sgx_mark_page_reclaimable() adds a newly
allocated page into the global LRU list while
sgx_unmark_page_reclaimable() does the opposite. Abstract the hard coded
global L
Hi,
On 3/26/24 03:08, Vincent Donnefort wrote:
> It is now possible to mmap() a ring-buffer to stream its content. Add
> some documentation and a code example.
>
> Signed-off-by: Vincent Donnefort
>
> diff --git a/Documentation/trace/ring-buffer-map.rst
> b/Documentation/trace/ring-buffer-map
On Wed, Mar 27, 2024 at 5:18 PM Masami Hiramatsu wrote:
>
> On Wed, 27 Mar 2024 17:06:01 +
> Jonthan Haslam wrote:
>
> > > > Masami,
> > > >
> > > > Given the discussion around per-cpu rw semaphore and need for
> > > > (internal) batched attachment API for uprobes, do you think you can
> > >
On Wed, 27 Mar 2024 11:56:35 -0500, Jarkko Sakkinen
wrote:
On Wed Mar 27, 2024 at 2:55 PM EET, Jarkko Sakkinen wrote:
On Mon, 2024-02-05 at 13:06 -0800, Haitao Huang wrote:
> The scripts rely on cgroup-tools package from libcgroup [1].
>
> To run selftests for epc cgroup:
>
> sudo ./run_epc_
"Ho-Ren (Jack) Chuang" writes:
[snip]
> @@ -655,6 +672,34 @@ void mt_put_memory_types(struct list_head *memory_types)
> }
> EXPORT_SYMBOL_GPL(mt_put_memory_types);
>
> +/*
> + * This is invoked via `late_initcall()` to initialize memory tiers for
> + * CPU-less memory nodes after driver init
On Wed, 27 Mar 2024 06:51:25 -0700, Breno Leitao wrote:
> Hello Xuan,
>
> On Wed, Mar 27, 2024 at 09:37:43AM +0800, Xuan Zhuo wrote:
> > On Tue, 26 Mar 2024 08:19:08 -0700, Breno Leitao wrote:
> > > Do not set virtnet_info->rss_indir_table_size if RSS is not available
> > > for the device.
> > >
>
> You *definitely* want to do that - good catch.
>
> And TBH, all the screaming words aren't helping either... :)
>
:) I thought the same as well. But, I felt inconsistently screaming
words might be worse. Maybe just update all the words that are not
acronyms (such as Processor, Time, Socke
On Wed, 27 Mar 2024 19:57:26 -0500, Haitao Huang
wrote:
On Wed, 27 Mar 2024 11:56:35 -0500, Jarkko Sakkinen
wrote:
On Wed Mar 27, 2024 at 2:55 PM EET, Jarkko Sakkinen wrote:
On Mon, 2024-02-05 at 13:06 -0800, Haitao Huang wrote:
> The scripts rely on cgroup-tools package from libcgroup
On Tue, 2024-03-26 at 23:38 -0700, Dan Williams wrote:
> > +unsigned long
> > +mm_get_unmapped_area(struct mm_struct *mm, struct file *file,
> > + unsigned long addr, unsigned long len,
> > + unsigned long pgoff, unsigned long flags)
> > +{
>
> Seems like a sm
On Wed, 2024-03-27 at 15:15 +0200, Jarkko Sakkinen wrote:
> I mean I believe the change itself makes sense, it is just not
> fully documented in the commit message.
Ah, I see. Yes, there could be more background on arch_pick_mmap_layout().
On Wed, 27 Mar 2024 07:55:34 -0500, Jarkko Sakkinen
wrote:
On Mon, 2024-02-05 at 13:06 -0800, Haitao Huang wrote:
The scripts rely on cgroup-tools package from libcgroup [1].
To run selftests for epc cgroup:
sudo ./run_epc_cg_selftests.sh
To watch misc cgroup 'current' changes during test
On Thu, Mar 28, 2024 at 8:22 AM Gavin Shan wrote:
>
> All the callers of vhost_get_avail_idx() are concerned to the memory
> barrier, imposed by smp_rmb() to ensure the order of the available
> ring entry read and avail_idx read.
>
> Improve vhost_get_avail_idx() so that smp_rmb() is executed when
On Thu, Mar 28, 2024 at 7:44 AM Andrew Melnychenko wrote:
>
> When the Qemu launched with vhost but without tap vnet_hdr,
> vhost tries to copy vnet_hdr from socket iter with size 0
> to the page that may contain some trash.
> That trash can be interpreted as unpredictable values for
> vnet_hdr.
>
On 3/27/2024 17:31, Sohil Mehta wrote:
> On 3/27/2024 1:54 PM, Avadhut Naik wrote:
>
>> -TP_printk("CPU: %d, MCGc/s: %llx/%llx, MC%d: %016Lx, IPID: %016Lx,
>> ADDR/MISC/SYND: %016Lx/%016Lx/%016Lx, RIP: %02x:<%016Lx>, TSC: %llx, PPIN:
>> %llx, PROCESSOR: %u:%x, TIME: %llu, SOCKET: %u, APIC
On 3/27/2024 17:35, Borislav Petkov wrote:
> On Wed, Mar 27, 2024 at 03:31:01PM -0700, Sohil Mehta wrote:
>> On 3/27/2024 1:54 PM, Avadhut Naik wrote:
>>
>>> - TP_printk("CPU: %d, MCGc/s: %llx/%llx, MC%d: %016Lx, IPID: %016Lx,
>>> ADDR/MISC/SYND: %016Lx/%016Lx/%016Lx, RIP: %02x:<%016Lx>, TSC:
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