From: Jason Gunthorpe <jgg@nvidia.com>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ankit Agrawal <ankita@nvidia.com>,
Oliver Upton <oliver.upton@linux.dev>,
Sean Christopherson <seanjc@google.com>,
Marc Zyngier <maz@kernel.org>,
"joey.gouly@arm.com" <joey.gouly@arm.com>,
"suzuki.poulose@arm.com" <suzuki.poulose@arm.com>,
"yuzenghui@huawei.com" <yuzenghui@huawei.com>,
"will@kernel.org" <will@kernel.org>,
"ryan.roberts@arm.com" <ryan.roberts@arm.com>,
"shahuang@redhat.com" <shahuang@redhat.com>,
"lpieralisi@kernel.org" <lpieralisi@kernel.org>,
"david@redhat.com" <david@redhat.com>,
Aniket Agashe <aniketa@nvidia.com>, Neo Jia <cjia@nvidia.com>,
Kirti Wankhede <kwankhede@nvidia.com>,
"Tarun Gupta (SW-GPU)" <targupta@nvidia.com>,
Vikram Sethi <vsethi@nvidia.com>,
Andy Currid <acurrid@nvidia.com>,
Alistair Popple <apopple@nvidia.com>,
John Hubbard <jhubbard@nvidia.com>,
Dan Williams <danw@nvidia.com>, Zhi Wang <zhiw@nvidia.com>,
Matt Ochs <mochs@nvidia.com>, Uday Dhoke <udhoke@nvidia.com>,
Dheeraj Nigam <dnigam@nvidia.com>,
Krishnakant Jaju <kjaju@nvidia.com>,
"alex.williamson@redhat.com" <alex.williamson@redhat.com>,
"sebastianene@google.com" <sebastianene@google.com>,
"coltonlewis@google.com" <coltonlewis@google.com>,
"kevin.tian@intel.com" <kevin.tian@intel.com>,
"yi.l.liu@intel.com" <yi.l.liu@intel.com>,
"ardb@kernel.org" <ardb@kernel.org>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"gshan@redhat.com" <gshan@redhat.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"ddutile@redhat.com" <ddutile@redhat.com>,
"tabba@google.com" <tabba@google.com>,
"qperret@google.com" <qperret@google.com>,
"kvmarm@lists.linux.dev" <kvmarm@lists.linux.dev>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v3 1/1] KVM: arm64: Allow cacheable stage 2 mapping using VMA flags
Date: Tue, 29 Apr 2025 11:14:37 -0300 [thread overview]
Message-ID: <20250429141437.GC2260709@nvidia.com> (raw)
In-Reply-To: <aBDTpu_ACoXAPoE2@arm.com>
On Tue, Apr 29, 2025 at 02:27:02PM +0100, Catalin Marinas wrote:
> BTW, we should reject exec mappings as well (they probably fail for S1
> VFIO since set_pte_at() will try to do cache maintenance).
To be clear the S2 should leave the mapping as execute allowed
though. Only the VM knows how it will use this memory and VM's do
actually execute out of the cachable PFNMAP VMA today. The VM will set
any execute deny/allow on its S1 table according to how it uses the
memory.
Jason
next prev parent reply other threads:[~2025-04-29 14:14 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-10 10:30 [PATCH v3 0/1] KVM: arm64: Map GPU device memory as cacheable ankita
2025-03-10 10:30 ` [PATCH v3 1/1] KVM: arm64: Allow cacheable stage 2 mapping using VMA flags ankita
2025-03-10 11:54 ` Marc Zyngier
2025-03-11 3:42 ` Ankit Agrawal
2025-03-11 11:18 ` Marc Zyngier
2025-03-11 12:07 ` Ankit Agrawal
2025-03-12 8:21 ` Marc Zyngier
2025-03-17 5:55 ` Ankit Agrawal
2025-03-17 9:27 ` Marc Zyngier
2025-03-17 19:54 ` Catalin Marinas
2025-03-18 9:39 ` Marc Zyngier
2025-03-18 12:55 ` Jason Gunthorpe
2025-03-18 19:27 ` Catalin Marinas
2025-03-18 19:35 ` David Hildenbrand
2025-03-18 19:40 ` Oliver Upton
2025-03-20 3:30 ` bibo mao
2025-03-20 7:24 ` bibo mao
2025-03-18 23:17 ` Jason Gunthorpe
2025-03-19 18:03 ` Catalin Marinas
2025-03-18 19:30 ` Oliver Upton
2025-03-18 23:09 ` Jason Gunthorpe
2025-03-19 7:01 ` Oliver Upton
2025-03-19 17:04 ` Jason Gunthorpe
2025-03-19 18:11 ` Catalin Marinas
2025-03-19 19:22 ` Jason Gunthorpe
2025-03-19 21:48 ` Catalin Marinas
2025-03-26 8:31 ` Ankit Agrawal
2025-03-26 14:53 ` Sean Christopherson
2025-03-26 15:42 ` Marc Zyngier
2025-03-26 16:10 ` Sean Christopherson
2025-03-26 18:02 ` Marc Zyngier
2025-03-26 18:24 ` Sean Christopherson
2025-03-26 18:51 ` Oliver Upton
2025-03-31 14:44 ` Jason Gunthorpe
2025-03-31 14:56 ` Jason Gunthorpe
2025-04-07 15:20 ` Sean Christopherson
2025-04-07 16:15 ` Jason Gunthorpe
2025-04-07 16:43 ` Sean Christopherson
2025-04-16 8:51 ` Ankit Agrawal
2025-04-21 16:03 ` Ankit Agrawal
2025-04-22 7:49 ` Oliver Upton
2025-04-22 13:54 ` Jason Gunthorpe
2025-04-22 16:50 ` Catalin Marinas
2025-04-22 17:03 ` Jason Gunthorpe
2025-04-22 21:28 ` Oliver Upton
2025-04-22 23:35 ` Jason Gunthorpe
2025-04-23 10:45 ` Catalin Marinas
2025-04-23 12:02 ` Jason Gunthorpe
2025-04-23 12:26 ` Catalin Marinas
2025-04-23 13:03 ` Jason Gunthorpe
2025-04-29 10:47 ` Ankit Agrawal
2025-04-29 13:27 ` Catalin Marinas
2025-04-29 14:14 ` Jason Gunthorpe [this message]
2025-04-29 16:03 ` Catalin Marinas
2025-04-29 16:44 ` Jason Gunthorpe
2025-04-29 18:09 ` Catalin Marinas
2025-04-29 18:19 ` Jason Gunthorpe
2025-05-07 15:26 ` Ankit Agrawal
2025-05-09 12:47 ` Catalin Marinas
2025-04-22 14:53 ` Sean Christopherson
2025-03-18 12:57 ` Jason Gunthorpe
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=20250429141437.GC2260709@nvidia.com \
--to=jgg@nvidia.com \
--cc=acurrid@nvidia.com \
--cc=akpm@linux-foundation.org \
--cc=alex.williamson@redhat.com \
--cc=aniketa@nvidia.com \
--cc=ankita@nvidia.com \
--cc=apopple@nvidia.com \
--cc=ardb@kernel.org \
--cc=catalin.marinas@arm.com \
--cc=cjia@nvidia.com \
--cc=coltonlewis@google.com \
--cc=danw@nvidia.com \
--cc=david@redhat.com \
--cc=ddutile@redhat.com \
--cc=dnigam@nvidia.com \
--cc=gshan@redhat.com \
--cc=jhubbard@nvidia.com \
--cc=joey.gouly@arm.com \
--cc=kevin.tian@intel.com \
--cc=kjaju@nvidia.com \
--cc=kvmarm@lists.linux.dev \
--cc=kwankhede@nvidia.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=lpieralisi@kernel.org \
--cc=maz@kernel.org \
--cc=mochs@nvidia.com \
--cc=oliver.upton@linux.dev \
--cc=qperret@google.com \
--cc=ryan.roberts@arm.com \
--cc=seanjc@google.com \
--cc=sebastianene@google.com \
--cc=shahuang@redhat.com \
--cc=suzuki.poulose@arm.com \
--cc=tabba@google.com \
--cc=targupta@nvidia.com \
--cc=udhoke@nvidia.com \
--cc=vsethi@nvidia.com \
--cc=will@kernel.org \
--cc=yi.l.liu@intel.com \
--cc=yuzenghui@huawei.com \
--cc=zhiw@nvidia.com \
/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