From: Thomas Gleixner <tglx@linutronix.de>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>,
virtualization <virtualization@lists.linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
"Hetzelt, Felicitas" <f.hetzelt@tu-berlin.de>,
"kaplan, david" <david.kaplan@amd.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
pbonzini <pbonzini@redhat.com>, Andi Kleen <ak@linux.intel.com>,
Dan Williams <dan.j.williams@intel.com>,
"Kuppuswamy,
Sathyanarayanan" <sathyanarayanan.kuppuswamy@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Peter Zijlstra <peterz@infradead.org>,
Andy Lutomirski <luto@kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Richard Henderson <rth@twiddle.net>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
James E J Bottomley <James.Bottomley@hansenpartnership.com>,
Helge Deller <deller@gmx.de>,
"David S . Miller" <davem@davemloft.net>,
Arnd Bergmann <arnd@arndb.de>, Jonathan Corbet <corbet@lwn.net>,
Peter H Anvin <hpa@zytor.com>,
Dave Hansen <dave.hansen@intel.com>,
Tony Luck <tony.luck@intel.com>,
Kirill Shutemov <kirill.shutemov@linux.intel.com>,
Sean Christopherson <seanjc@google.com>,
Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
X86 ML <x86@kernel.org>
Subject: Re: [PATCH 6/9] virtio_pci: harden MSI-X interrupts
Date: Tue, 14 Sep 2021 10:29:35 +0200 [thread overview]
Message-ID: <878rzzef0w.ffs@tglx> (raw)
In-Reply-To: <20210913164934-mutt-send-email-mst@kernel.org>
On Mon, Sep 13 2021 at 16:54, Michael S. Tsirkin wrote:
> On Mon, Sep 13, 2021 at 09:38:30PM +0200, Thomas Gleixner wrote:
>> and disable it again
>> before reset() is invoked. That's a question of general robustness and
>> not really a question of trusted hypervisors and encrypted guests.
>
> We can do this for some MSIX interrupts, sure. Not for shared interrupts though.
But you have to make sure that the handler does not run before and after
the defined points. And that's even more important for shared because
with shared interrupts the interrupt can be raised at any point in time
via the other devices which share the line.
Thanks,
tglx
next prev parent reply other threads:[~2021-09-14 8:29 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-13 5:53 [PATCH 0/9] More virtio hardening Jason Wang
2021-09-13 5:53 ` [PATCH 1/9] virtio-blk: validate num_queues during probe Jason Wang
2021-09-13 7:48 ` Stefano Garzarella
2021-09-14 2:29 ` Jason Wang
2021-09-13 12:05 ` Stefan Hajnoczi
2021-09-13 5:53 ` [PATCH 2/9] virtio: add doc for validate() method Jason Wang
2021-09-13 5:53 ` [PATCH 3/9] virtio-console: switch to use .validate() Jason Wang
2021-09-13 5:53 ` [PATCH 4/9] virtio_console: validate max_nr_ports before trying to use it Jason Wang
2021-09-13 5:53 ` [PATCH 5/9] virtio_config: introduce a new ready method Jason Wang
2021-09-13 5:53 ` [PATCH 6/9] virtio_pci: harden MSI-X interrupts Jason Wang
2021-09-13 6:03 ` Michael S. Tsirkin
2021-09-13 6:08 ` Jason Wang
2021-09-13 6:28 ` Michael S. Tsirkin
2021-09-13 6:34 ` Jason Wang
2021-09-13 6:37 ` Michael S. Tsirkin
2021-09-13 6:43 ` Jason Wang
2021-09-13 7:01 ` Michael S. Tsirkin
2021-09-13 7:15 ` Jason Wang
2021-09-13 6:50 ` Michael S. Tsirkin
2021-09-13 7:07 ` Jason Wang
2021-09-13 19:38 ` Thomas Gleixner
2021-09-13 20:54 ` Michael S. Tsirkin
2021-09-13 22:31 ` Thomas Gleixner
2021-09-14 2:20 ` Jason Wang
2021-09-14 8:29 ` Thomas Gleixner [this message]
2021-09-13 5:53 ` [PATCH 7/9] virtio-pci: harden INTX interrupts Jason Wang
2021-09-13 6:33 ` Michael S. Tsirkin
2021-09-13 6:36 ` Jason Wang
2021-09-13 6:41 ` Michael S. Tsirkin
2021-09-13 6:45 ` Jason Wang
2021-09-13 7:02 ` Michael S. Tsirkin
2021-09-13 7:17 ` Jason Wang
2021-09-13 21:36 ` Thomas Gleixner
2021-09-13 22:01 ` Michael S. Tsirkin
2021-09-13 22:20 ` Thomas Gleixner
2021-09-14 2:50 ` Jason Wang
2021-09-14 9:34 ` Boqun Feng
2021-09-14 11:03 ` Peter Zijlstra
2021-09-14 11:09 ` Thomas Gleixner
2021-09-13 5:53 ` [PATCH 8/9] virtio_ring: fix typos in vring_desc_extra Jason Wang
2021-09-13 5:53 ` [PATCH 9/9] virtio_ring: validate used buffer length Jason Wang
2021-09-13 6:36 ` Michael S. Tsirkin
2021-09-13 6:40 ` Jason Wang
2021-09-13 6:57 ` Michael S. Tsirkin
2021-09-13 7:13 ` Jason Wang
2021-10-05 7:42 ` [PATCH 0/9] More virtio hardening Michael S. Tsirkin
2021-10-11 7:36 ` Jason Wang
2021-10-11 12:36 ` Michael S. Tsirkin
2021-10-12 2:43 ` Jason Wang
2021-10-12 5:44 ` Michael S. Tsirkin
2021-10-12 6:11 ` Jason Wang
2021-10-12 6:35 ` Michael S. Tsirkin
2021-10-12 6:43 ` Jason Wang
2021-10-12 7:03 ` Michael S. Tsirkin
2021-10-12 8:46 ` Jason Wang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=878rzzef0w.ffs@tglx \
--to=tglx@linutronix.de \
--cc=James.Bottomley@hansenpartnership.com \
--cc=ak@linux.intel.com \
--cc=arnd@arndb.de \
--cc=bhelgaas@google.com \
--cc=bp@alien8.de \
--cc=corbet@lwn.net \
--cc=dan.j.williams@intel.com \
--cc=dave.hansen@intel.com \
--cc=davem@davemloft.net \
--cc=david.kaplan@amd.com \
--cc=deller@gmx.de \
--cc=f.hetzelt@tu-berlin.de \
--cc=hpa@zytor.com \
--cc=jasowang@redhat.com \
--cc=kirill.shutemov@linux.intel.com \
--cc=knsathya@kernel.org \
--cc=konrad.wilk@oracle.com \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@kernel.org \
--cc=mingo@redhat.com \
--cc=mst@redhat.com \
--cc=pbonzini@redhat.com \
--cc=peterz@infradead.org \
--cc=rth@twiddle.net \
--cc=sathyanarayanan.kuppuswamy@linux.intel.com \
--cc=seanjc@google.com \
--cc=tony.luck@intel.com \
--cc=tsbogend@alpha.franken.de \
--cc=virtualization@lists.linux-foundation.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox