KVM ARM Archive on lore.kernel.org
 help / color / Atom feed
From: Mark Rutland <mark.rutland@arm.com>
To: Alexandru Elisei <alexandru.elisei@arm.com>
Cc: maz@kernel.org, pbonzini@redhat.com,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
	andre.przywara@arm.com
Subject: Re: [kvm-unit-tests RFC PATCH 04/16] arm/arm64: selftest: Add prefetch abort test
Date: Thu, 29 Aug 2019 11:19:42 +0100
Message-ID: <20190829101942.GC44575@lakrids.cambridge.arm.com> (raw)
In-Reply-To: <e6b8a3c9-2e11-c806-da5b-8b66d8f63ce3@arm.com>

On Thu, Aug 29, 2019 at 09:18:35AM +0100, Alexandru Elisei wrote:
> On 8/28/19 3:09 PM, Mark Rutland wrote:
> > On Wed, Aug 28, 2019 at 02:38:19PM +0100, Alexandru Elisei wrote:
> >> +	/*
> >> +	 * AArch64 treats all regions writable at EL0 as PXN.
> > I didn't think that was the case, and I can't find wording to that
> > effect in the ARM ARM (looking at ARM DDI 0487E.a). Where is that
> > stated?
> 
> It's in ARM DDI 0487E.a, table D5-33, footnote c: "Not executable, because
> AArch64 execution treats all regions writable at EL0 as being PXN". I'll update
> the comment to include the quote.

Interesting; I was not aware of that particular behaviour. Thanks
for the pointer!

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

  reply index

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-28 13:38 [kvm-unit-tests RFC PATCH 00/16] arm64: Run at EL2 Alexandru Elisei
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 01/16] arm: selftest.c: Remove redundant check for Exception Level Alexandru Elisei
2019-08-28 14:32   ` Andrew Jones
2019-08-28 15:39     ` Alexandru Elisei
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 02/16] arm/arm64: psci: Don't run C code without stack or vectors Alexandru Elisei
2019-08-28 14:45   ` Andrew Jones
2019-08-28 15:14     ` Alexandru Elisei
2019-09-02 14:55       ` Alexandru Elisei
2019-09-03  6:37         ` Andrew Jones
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 03/16] lib: arm/arm64: Add missing include for alloc_page.h in pgtable.h Alexandru Elisei
2019-08-28 14:47   ` Andrew Jones
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 04/16] arm/arm64: selftest: Add prefetch abort test Alexandru Elisei
2019-08-28 14:09   ` Mark Rutland
2019-08-29  8:18     ` Alexandru Elisei
2019-08-29 10:19       ` Mark Rutland [this message]
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 05/16] arm64: timer: Write to ICENABLER to disable timer IRQ Alexandru Elisei
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 06/16] arm64: timer: EOIR the interrupt after masking the timer Alexandru Elisei
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 07/16] arm64: timer: Test behavior when timer disabled or masked Alexandru Elisei
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 08/16] lib: arm/arm64: Refuse to disable the MMU with non-identity stack pointer Alexandru Elisei
2019-08-28 14:55   ` Andrew Jones
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 09/16] lib: arm/arm64: Invalidate TLB before enabling MMU Alexandru Elisei
2019-08-28 14:59   ` Andrew Jones
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 10/16] lib: Add UL and ULL definitions to linux/const.h Alexandru Elisei
2019-08-28 15:10   ` Andrew Jones
2019-08-28 15:46     ` Alexandru Elisei
2019-08-28 16:19       ` Andrew Jones
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 11/16] lib: arm64: Run existing tests at EL2 Alexandru Elisei
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 12/16] arm64: timer: Add test for EL2 timers Alexandru Elisei
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 13/16] arm64: selftest: Add basic test for EL2 Alexandru Elisei
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 14/16] lib: arm64: Add support for disabling and re-enabling VHE Alexandru Elisei
2019-08-28 14:19   ` Mark Rutland
2019-08-29  8:36     ` Alexandru Elisei
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 15/16] arm64: selftest: Expand EL2 test to disable and re-enable VHE Alexandru Elisei
2019-08-28 13:38 ` [kvm-unit-tests RFC PATCH 16/16] arm64: timer: Run tests with VHE disabled Alexandru Elisei

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=20190829101942.GC44575@lakrids.cambridge.arm.com \
    --to=mark.rutland@arm.com \
    --cc=alexandru.elisei@arm.com \
    --cc=andre.przywara@arm.com \
    --cc=kvm@vger.kernel.org \
    --cc=kvmarm@lists.cs.columbia.edu \
    --cc=maz@kernel.org \
    --cc=pbonzini@redhat.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

KVM ARM Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/kvmarm/0 kvmarm/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 kvmarm kvmarm/ https://lore.kernel.org/kvmarm \
		kvmarm@lists.cs.columbia.edu
	public-inbox-index kvmarm

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/edu.columbia.cs.lists.kvmarm


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git