All of lore.kernel.org
 help / color / mirror / Atom feed
From: Oliver Upton <oliver.upton@linux.dev>
To: kvmarm@lists.cs.columbia.edu
Cc: kvm@vger.kernel.org, maz@kernel.org, will@kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/2] KVM: arm64: Uphold 64bit-only behavior on asymmetric systems
Date: Tue, 16 Aug 2022 19:25:52 +0000	[thread overview]
Message-ID: <20220816192554.1455559-1-oliver.upton@linux.dev> (raw)

Small series to fix a couple issues around when 64bit-only behavior is
applied. As KVM is more restrictive than the kernel in terms of 32bit
support (no asymmetry), we really needed our own predicate when the
meaning of system_supports_32bit_el0() changed in commit 2122a833316f
("arm64: Allow mismatched 32-bit EL0 support").

Lightly tested as I do not have any asymmetric systems on hand at the
moment. Attention on patch 2 would be appreciated as it affects ABI.

Applies to 6.0-rc1.

v1 -> v2:
 - Fix a silly logic inversion in vcpu_mode_is_bad_32bit()
 - Rebase to 6.0-rc1

Oliver Upton (2):
  KVM: arm64: Treat PMCR_EL1.LC as RES1 on asymmetric systems
  KVM: arm64: Reject 32bit user PSTATE on asymmetric systems

 arch/arm64/include/asm/kvm_host.h | 4 ++++
 arch/arm64/kvm/arm.c              | 3 +--
 arch/arm64/kvm/guest.c            | 2 +-
 arch/arm64/kvm/sys_regs.c         | 4 ++--
 4 files changed, 8 insertions(+), 5 deletions(-)


base-commit: 568035b01cfb107af8d2e4bd2fb9aea22cf5b868
-- 
2.37.1.595.g718a3a8f04-goog

_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm

WARNING: multiple messages have this Message-ID (diff)
From: Oliver Upton <oliver.upton@linux.dev>
To: kvmarm@lists.cs.columbia.edu
Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	maz@kernel.org, james.morse@arm.com, alexandru.elisei@arm.com,
	suzuki.poulose@arm.com, will@kernel.org,
	Oliver Upton <oliver.upton@linux.dev>
Subject: [PATCH v2 0/2] KVM: arm64: Uphold 64bit-only behavior on asymmetric systems
Date: Tue, 16 Aug 2022 19:25:52 +0000	[thread overview]
Message-ID: <20220816192554.1455559-1-oliver.upton@linux.dev> (raw)

Small series to fix a couple issues around when 64bit-only behavior is
applied. As KVM is more restrictive than the kernel in terms of 32bit
support (no asymmetry), we really needed our own predicate when the
meaning of system_supports_32bit_el0() changed in commit 2122a833316f
("arm64: Allow mismatched 32-bit EL0 support").

Lightly tested as I do not have any asymmetric systems on hand at the
moment. Attention on patch 2 would be appreciated as it affects ABI.

Applies to 6.0-rc1.

v1 -> v2:
 - Fix a silly logic inversion in vcpu_mode_is_bad_32bit()
 - Rebase to 6.0-rc1

Oliver Upton (2):
  KVM: arm64: Treat PMCR_EL1.LC as RES1 on asymmetric systems
  KVM: arm64: Reject 32bit user PSTATE on asymmetric systems

 arch/arm64/include/asm/kvm_host.h | 4 ++++
 arch/arm64/kvm/arm.c              | 3 +--
 arch/arm64/kvm/guest.c            | 2 +-
 arch/arm64/kvm/sys_regs.c         | 4 ++--
 4 files changed, 8 insertions(+), 5 deletions(-)


base-commit: 568035b01cfb107af8d2e4bd2fb9aea22cf5b868
-- 
2.37.1.595.g718a3a8f04-goog


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: Oliver Upton <oliver.upton@linux.dev>
To: kvmarm@lists.cs.columbia.edu
Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	maz@kernel.org, james.morse@arm.com, alexandru.elisei@arm.com,
	suzuki.poulose@arm.com, will@kernel.org,
	Oliver Upton <oliver.upton@linux.dev>
Subject: [PATCH v2 0/2] KVM: arm64: Uphold 64bit-only behavior on asymmetric systems
Date: Tue, 16 Aug 2022 19:25:52 +0000	[thread overview]
Message-ID: <20220816192554.1455559-1-oliver.upton@linux.dev> (raw)

Small series to fix a couple issues around when 64bit-only behavior is
applied. As KVM is more restrictive than the kernel in terms of 32bit
support (no asymmetry), we really needed our own predicate when the
meaning of system_supports_32bit_el0() changed in commit 2122a833316f
("arm64: Allow mismatched 32-bit EL0 support").

Lightly tested as I do not have any asymmetric systems on hand at the
moment. Attention on patch 2 would be appreciated as it affects ABI.

Applies to 6.0-rc1.

v1 -> v2:
 - Fix a silly logic inversion in vcpu_mode_is_bad_32bit()
 - Rebase to 6.0-rc1

Oliver Upton (2):
  KVM: arm64: Treat PMCR_EL1.LC as RES1 on asymmetric systems
  KVM: arm64: Reject 32bit user PSTATE on asymmetric systems

 arch/arm64/include/asm/kvm_host.h | 4 ++++
 arch/arm64/kvm/arm.c              | 3 +--
 arch/arm64/kvm/guest.c            | 2 +-
 arch/arm64/kvm/sys_regs.c         | 4 ++--
 4 files changed, 8 insertions(+), 5 deletions(-)


base-commit: 568035b01cfb107af8d2e4bd2fb9aea22cf5b868
-- 
2.37.1.595.g718a3a8f04-goog


             reply	other threads:[~2022-08-16 19:26 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-16 19:25 Oliver Upton [this message]
2022-08-16 19:25 ` [PATCH v2 0/2] KVM: arm64: Uphold 64bit-only behavior on asymmetric systems Oliver Upton
2022-08-16 19:25 ` Oliver Upton
2022-08-16 19:25 ` [PATCH v2 1/2] KVM: arm64: Treat PMCR_EL1.LC as RES1 " Oliver Upton
2022-08-16 19:25   ` Oliver Upton
2022-08-16 19:25   ` Oliver Upton
2022-08-16 19:25 ` [PATCH v2 2/2] KVM: arm64: Reject 32bit user PSTATE " Oliver Upton
2022-08-16 19:25   ` Oliver Upton
2022-08-16 19:25   ` Oliver Upton
2022-08-17  9:33 ` [PATCH v2 0/2] KVM: arm64: Uphold 64bit-only behavior " Marc Zyngier
2022-08-17  9:33   ` Marc Zyngier
2022-08-17  9:33   ` Marc Zyngier
2022-08-17 10:07 ` Marc Zyngier
2022-08-17 10:07   ` Marc Zyngier
2022-08-17 10:07   ` Marc Zyngier
2022-08-17 10:52   ` Alexandru Elisei
2022-08-17 10:52     ` Alexandru Elisei
2022-08-17 10:52     ` Alexandru Elisei
2022-08-17 10:56     ` Marc Zyngier
2022-08-17 10:56       ` Marc Zyngier
2022-08-17 10:56       ` Marc Zyngier
2022-08-17 15:13       ` Oliver Upton
2022-08-17 15:13         ` Oliver Upton
2022-08-17 15:13         ` Oliver Upton

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=20220816192554.1455559-1-oliver.upton@linux.dev \
    --to=oliver.upton@linux.dev \
    --cc=kvm@vger.kernel.org \
    --cc=kvmarm@lists.cs.columbia.edu \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=maz@kernel.org \
    --cc=will@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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.