linux-arm-kernel.lists.infradead.org archive mirror
 help / color / mirror / Atom feed
From: Raghavendra Rao Ananta <rananta@google.com>
To: Oliver Upton <oliver.upton@linux.dev>, Marc Zyngier <maz@kernel.org>
Cc: Raghavendra Rao Anata <rananta@google.com>,
	Mingwei Zhang <mizhang@google.com>,
	 linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
	 linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Subject: [PATCH 0/2] KVM : selftests: arm64: Explicitly set the page attrs to Inner-Shareable
Date: Fri,  4 Apr 2025 22:06:57 +0000	[thread overview]
Message-ID: <20250404220659.1312465-1-rananta@google.com> (raw)

The series fixes a conflict in memory attributes in some implementations,
such as Neoverse-N3, that causes a data abort in guest EL1 with FSC
0x35 (IMPLEMENTATION DEFINED fault (Unsupported Exclusive or Atomic
access)).

Patch-1 is a cleanup patch that replaces numbers (and comments) to
using proper macros for hardware configuration, such as registers and
page-table entries.

Patch-2 fixes the actual bug and sets the page attrs to Inner-Shareable
by default for the VMs created in the selftests. More details are
presented in the commit text.

Raghavendra Rao Ananta (2):
  KVM: selftests: arm64: Introduce and use hardware-definition macros
  KVM: selftests: arm64: Explicitly set the page attrs to
    Inner-Shareable

 tools/arch/arm64/include/asm/sysreg.h         | 38 ++++++++++++
 .../selftests/kvm/arm64/page_fault_test.c     |  2 +-
 .../selftests/kvm/include/arm64/processor.h   | 29 +++++++--
 .../selftests/kvm/lib/arm64/processor.c       | 60 +++++++++++--------
 4 files changed, 96 insertions(+), 33 deletions(-)


base-commit: 38fec10eb60d687e30c8c6b5420d86e8149f7557
-- 
2.49.0.504.g3bcea36a83-goog



             reply	other threads:[~2025-04-04 22:12 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-04 22:06 Raghavendra Rao Ananta [this message]
2025-04-04 22:06 ` [PATCH 1/2] KVM: selftests: arm64: Introduce and use hardware-definition macros Raghavendra Rao Ananta
2025-04-04 22:46   ` Oliver Upton
2025-04-04 22:06 ` [PATCH 2/2] KVM: selftests: arm64: Explicitly set the page attrs to Inner-Shareable Raghavendra Rao Ananta
2025-04-04 23:01   ` Oliver Upton
2025-04-05  0:01     ` Raghavendra Rao Ananta

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=20250404220659.1312465-1-rananta@google.com \
    --to=rananta@google.com \
    --cc=kvm@vger.kernel.org \
    --cc=kvmarm@lists.linux.dev \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=maz@kernel.org \
    --cc=mizhang@google.com \
    --cc=oliver.upton@linux.dev \
    /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;
as well as URLs for NNTP newsgroup(s).