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[PATCH v2 0/2] xen: arm64: Set IL to 1 when injecting exceptions
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Date: Thu, 13 Feb 2025 15:37:54 +0000
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- Cc: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Thu, 13 Feb 2025 15:38:11 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHbfi0/Dl9MXK7n90qWbfS8kxOotA==
- Thread-topic: [PATCH v2 0/2] xen: arm64: Set IL to 1 when injecting exceptions
Internal discussion on "Is ESR=0x0 a valid exception syndrome?" led
to realization that:
1. It is not valid exception syndrome
2. Xen theoretically may inject an exception with ESR=0x0
Further discussion in the ML showed that Xen also may inject
non-standard Data or Instuction Abort exception.
Following two patches address both issues.
Volodymyr Babchuk (2):
arch: arm64: always set IL=1 when injecting undefined exception
arch: arm64: always set IL=1 when injecting an abort exception
xen/arch/arm/arm64/vsysreg.c | 10 ++---
xen/arch/arm/include/asm/arm64/traps.h | 2 +-
xen/arch/arm/include/asm/p2m.h | 3 +-
xen/arch/arm/include/asm/traps.h | 2 +-
xen/arch/arm/p2m.c | 5 +--
xen/arch/arm/traps.c | 53 ++++++++++++--------------
xen/arch/arm/vcpreg.c | 26 ++++++-------
xen/arch/arm/vsmc.c | 6 +--
8 files changed, 49 insertions(+), 58 deletions(-)
--
2.47.1
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