On Wed, Mar 20, 2024 at 08:23:39AM +0800, Xiaoyao Li wrote:
> On 3/19/2024 11:08 PM, Pawan Gupta wrote:
> > On Tue, Mar 19, 2024 at 12:22:08PM +0800, Xiaoyao Li wrote:
> > > On 3/13/2024 10:53 PM, Pawan Gupta wrote:
> > > > Register File Data Sampling (RFDS) is a
On Tue, Mar 19, 2024 at 12:22:08PM +0800, Xiaoyao Li wrote:
> On 3/13/2024 10:53 PM, Pawan Gupta wrote:
> > Register File Data Sampling (RFDS) is a CPU side-channel vulnerability
> > that may expose stale register value. CPUs that set RFDS_NO bit in MSR
> > IA32_ARCH_
backgrounds:
> https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/advisory-guidance/register-file-data-sampling.html)
>
> > Signed-off-by: Pawan Gupta
> > ---
> > target/i386/cpu.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2
to help mitigate RFDS.
Make RFDS_CLEAR and RFDS_NO bits available to guests.
Signed-off-by: Pawan Gupta
---
target/i386/cpu.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 9a210d8d9290..693a5e0fb2ce 100644
--- a/target/i386
/camgffemg6tnq0n3+4ojagxc8j0oevy60khzekxcbs3lok9v...@mail.gmail.com/
Reported-by: Jack Wang
Signed-off-by: Pawan Gupta
Tested-by: Jack Wang
Tested-by: Daniel Sneddon
---
v2: Added commit tags
v1:
https://lore.kernel.org/qemu-devel/c373f3f92b542b738f296d44bb6a916a1cded7bd.1691774049.git.pawan.kumar.gu
Gather Data Sampling (GDS) is a side-channel attack using Gather
instructions. Some Intel processors will set ARCH_CAP_GDS_NO bit in
MSR IA32_ARCH_CAPABILITIES to report that they are not vulnerable to
GDS.
Make this bit available to guests.
Signed-off-by: Pawan Gupta
---
This is just compile
.
Signed-off-by: Pawan Gupta
---
target/i386/cpu.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 1242bd541a53..66d6062aea7c 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1049,10 +1049,10 @@ FeatureWordInfo
package: openjdk-8-jdk
version: latest
When I invoke `apt-get update && apt-get install openjdk-8-jdk` it is
installing an older version of jdk-8 which is 8u362-b09.
Jdk version 8u372-b07 is not getting installed while running the `apt-get
install openjdk-8-jdk` even after running the `apt-get
package: openjdk-8-jdk
version: latest
When I invoke `apt-get update && apt-get install openjdk-8-jdk` it is
installing an older version of jdk-8 which is 8u362-b09.
Jdk version 8u372-b07 is not getting installed while running the `apt-get
install openjdk-8-jdk` even after running the `apt-get
t; the MSR bits are carried forward and not cleared at the boot of the new
> > kernel. This might have some performance degradation that is hard to
> > find.
> >
> > This problem does not happen if the machine is (hard) rebooted, because
> > the bit will be cleare
On Mon, Nov 28, 2022 at 03:02:21PM -0800, Pawan Gupta wrote:
On Mon, Nov 28, 2022 at 11:40:19PM +0100, Borislav Petkov wrote:
On Mon, Nov 28, 2022 at 02:03:58PM -0800, Pawan Gupta wrote:
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 3e3230cccaa7..cfc2ed2661fc
On Mon, Nov 28, 2022 at 11:40:19PM +0100, Borislav Petkov wrote:
On Mon, Nov 28, 2022 at 02:03:58PM -0800, Pawan Gupta wrote:
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 3e3230cccaa7..cfc2ed2661fc 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu
.
Just remove that sentence - the macro's function is kinda obvious from
the diff itself.
Suggested-by: Pawan Gupta
Signed-off-by: Breno Leitao
---
arch/x86/include/asm/msr-index.h | 3 +++
arch/x86/kernel/cpu/bugs.c | 9 -
2 files changed, 11 insertions(+), 1 deletion(-)
diff
if eventually some new mitigation show up.
Suggested-by: Pawan Gupta
Signed-off-by: Breno Leitao
---
arch/x86/include/asm/msr-index.h | 3 +++
arch/x86/kernel/cpu/bugs.c | 10 +-
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86
On Fri, Nov 18, 2022 at 10:21:10AM -0800, Breno Leitao wrote:
Currently x86_spec_ctrl_base is read at boot time, and SPEC_CTRL_IBRS
bit is set if CONFIG_CPU_IBRS_ENTRY is enabled. There is no change in
the bit if CONFIG_CPU_IBRS_ENTRY is not set.
This is a problem when kexec-ing a kernel that
Public bug reported:
I have multiple regions ( e.g. R1, R2) in my setup and I am providing
those via "AVAILABLE_REGIONS" param in `local_settings` file. I have set
"DEFAULT_SERVICE_REGIONS" param too with correct endpoints ( e.g. R2).
Now while logging in I select `R2` from the Region dropdown,
only used inside #ifdef CONFIG_GPIOLIB, fix the
build warnings by wrapping the definition inside the config.
Fixes: f1b206cf7c57 ("pinctrl: core: print gpio in pins debugfs file")
Signed-off-by: Pawan Gupta
---
drivers/pinctrl/core.c | 3 ++-
1 file changed, 2 insertions(+), 1 del
Public bug reported:
I am trying to create a Ubuntu 18.04 VM using Openstack solution, I want
to assign IPv6 to the VM and I have disabled DHCP in the IPv6 subnet. It
is noticed that cloud-init is able to read the network related
information from the metadata url but not using it to assign it to
Public bug reported:
I am trying to create a CentOS-7 VM and trying to push a simple script
via Vendor Data, but I noticed, Cloud Init is able to copy the script
but the script is not getting executed.
Cloud Provider - Openstack
Vendor Data Script -
#!/bin/bash
echo 'Hello World!' >
On Thu, Aug 27, 2020 at 10:49:51AM +0200, Thomas Schmitt wrote:
> Hi,
>
> i am preparing my first patch.
> May i ask for review and advise how to make it acceptable ?
If you are not running it already you can catch common mistakes by
running checkpatch script from the kernel source top directory
The following commit has been merged into the x86/urgent branch of tip:
Commit-ID: f29dfa53cc8ae6ad93bae619bcc0bf45cab344f7
Gitweb:
https://git.kernel.org/tip/f29dfa53cc8ae6ad93bae619bcc0bf45cab344f7
Author:Pawan Gupta
AuthorDate:Thu, 16 Jul 2020 12:23:59 -07:00
Committer
The following commit has been merged into the x86/urgent branch of tip:
Commit-ID: 31dccf7df081364045bff196bdc060ddda97f2e9
Gitweb:
https://git.kernel.org/tip/31dccf7df081364045bff196bdc060ddda97f2e9
Author:Pawan Gupta
AuthorDate:Thu, 16 Jul 2020 12:23:59 -07:00
Committer
is disabled or unsupported in the hardware. Change the
mitigation reporting for these cases.
Fixes: b8e8c8303ff2 ("kvm: mmu: ITLB_MULTIHIT mitigation")
Reported-by: Nelson Dsouza
Co-developed-by: Sean Christopherson
Signed-off-by: Sean Christopherson
Signed-off-by: Pawan Gupta
Reviewed-by:
On Tue, Jul 14, 2020 at 05:51:30PM -0700, Sean Christopherson wrote:
> On Tue, Jul 14, 2020 at 02:20:59PM -0700, Dave Hansen wrote:
> > On 7/14/20 2:04 PM, Pawan Gupta wrote:
> > >> I see three inputs and four possible states (sorry for the ugly table,
> > >
On Tue, Jul 14, 2020 at 12:54:26PM -0700, Dave Hansen wrote:
> On 7/14/20 12:17 PM, Pawan Gupta wrote:
> > On Tue, Jul 14, 2020 at 07:57:53AM -0700, Dave Hansen wrote:
> >> Let's stick to things which are at least static per reboot. Checking
> >> for X86_FEATURE_VMX or
On Tue, Jul 14, 2020 at 07:57:53AM -0700, Dave Hansen wrote:
> Let's stick to things which are at least static per reboot. Checking
> for X86_FEATURE_VMX or even CONFIG_KVM_INTEL seems like a good stopping
> point. "Could this kernel run a naughty guest?" If so, report
> "Vulnerable". It's the
IHIT mitigation")
Signed-off-by: Pawan Gupta
Reviewed-by: Tony Luck
---
.../admin-guide/hw-vuln/multihit.rst | 5 +++-
arch/x86/include/asm/processor.h | 6 +
arch/x86/kernel/cpu/bugs.c| 24 +--
arch/x86/kvm/mmu/mmu.c
this bit available to guests.
Signed-off-by: Pawan Gupta
---
target/i386/cpu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index a624163ac2cd..af84b04951cf 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1205,7 +1205,7 @@ static
On Wed, May 29, 2019 at 08:36:49PM +, Vineeth Remanan Pillai wrote:
> From: Peter Zijlstra
>
> Instead of only selecting a local task, select a task for all SMT
> siblings for every reschedule on the core (irrespective which logical
> CPU does the reschedule).
>
> NOTE: there is still
Hi,
With core scheduling LTP reports 2 new failures related to
cgroups(memcg_stat_rss and memcg_move_charge_at_immigrate). I will try to debug
it.
Also "perf sched map" indicates there might be a small window when 2 processes
in different cgroups run together on one core.
In below case B0 and
Public bug reported:
I noticed that on page
https://docs.openstack.org/keystone/queens/install/keystone-install-
rdo.html#install-and-configure-components, which is for installing and
configuring keystone, under Finalize the installation section, step 2,
this value export
thanks
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Hi Everyone
We are having serious problem with our website 911india.com. We have hosted
it on Amazon EC2 server and there is a ticket that is issued which
redirects us to the admin interface that shows Admin is disabled because
insecure channel
I tried searching on the website but nothing
For learning purpose.
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Hi
I am a newbie to web2py and I'm just learning. I am trying to implement
Multiupload in my code as suggested on this
thread https://groups.google.com/forum/#!topic/web2py/XpnUb2_MaRc
I am getting an error *[Errno 21] is a directory* while specifying the
upload directory in my db.py model. I
on the net.
so , please help me out , and tell me how to config, find and install the flex
3 plugin to myeclipse 6.0 and how to deploy the flex 3 application on the Jboss
5.0.GA ,
with Best Regards
Pawan Gupta
hello
How can we calculate binding free energy and electrostatics potential for
ligand-protein complex?
which parameter is required in mdrun input file for that?
I tried online manual but did not get output.
It is appriciable if any body have idea
Thanks in advance
Regards
Pawan Gupta
] = 93
titles // here I like to put text value in titles array.
end
end
Thanks,
Pawan Gupta
-
Blog : http://www.xanga.com/pawan79
Hi all,
I've set up iptables to mark all the packets coming from
a particular host on my network. But I'm not sure whether my
packets are getting marked or not. Does iptables provides any
way to the packets which are getting marked (or any other way
which makes sure that the packets are getting
Hi,
In my LAN Iam trying to make following setup:
- All the traffic generated by 10.0.2.1 should go to 10.0.2.11,
If
the destination of this traffic is internet than it should be
placed on its interface eth1. Outgoing traffic on eth1 should be
shaped.For this I am using fw filters and cbq.
In my LAN Iam trying to make following setup:
- All the traffic generated by 10.0.2.1 should go to 10.0.2.11, If
the destination of this traffic is internet than it should be
placed on its interface eth1. Outgoing traffic on eth1 should be
shaped.For this I am using fw filters and cbq.
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