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[PATCH v5 0/5] x86: Drop cross-vendor support
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Alejandro Vallejo <alejandro.garciavallejo@xxxxxxx>
- Date: Thu, 12 Mar 2026 12:21:09 +0100
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- Cc: Alejandro Vallejo <alejandro.garciavallejo@xxxxxxx>, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>, Community Manager <community.manager@xxxxxxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, "Andrew Cooper" <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, "Jason Andryuk" <jason.andryuk@xxxxxxx>
- Delivery-date: Thu, 12 Mar 2026 11:21:50 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Hi,
Patches 2, 4 and 5 missing acks.
Patch 2 now does a minimal diff change, while 4 and 5 perform the meat of what
v4/patch2 used to do.
I had patches 4 and 5 appended to the end in the hopes of having 1-3 committed
sooner.
v1:
https://lore.kernel.org/xen-devel/20260122164943.20691-1-alejandro.garciavallejo@xxxxxxx/
v2:
https://lore.kernel.org/xen-devel/20260205170923.38425-1-alejandro.garciavallejo@xxxxxxx/
v3:
https://lore.kernel.org/xen-devel/20260213114232.42996-1-alejandro.garciavallejo@xxxxxxx/
v4:
https://lore.kernel.org/xen-devel/20260311142711.16754-1-alejandro.garciavallejo@xxxxxxx/
Cheers,
Alejandro
Alejandro Vallejo (5):
x86: Reject CPU policies with vendors other than the host's
x86/hvm: Disable cross-vendor handling in #UD handler
x86/hvm: Remove cross-vendor checks from MSR handlers.
x86/svm: Drop emulation of Intel's SYSENTER MSR behaviour
x86/hvm: Un-indent the HVM_FEP block in the #UD handler
CHANGELOG.md | 5 ++
tools/tests/cpu-policy/test-cpu-policy.c | 27 +++++++++++
xen/arch/x86/hvm/hvm.c | 62 +++++++++---------------
xen/arch/x86/hvm/svm/svm.c | 45 ++++++++---------
xen/arch/x86/hvm/svm/vmcb.c | 3 ++
xen/arch/x86/hvm/vmx/vmx.c | 3 +-
xen/arch/x86/include/asm/hvm/svm-types.h | 10 ----
xen/arch/x86/lib/cpu-policy/policy.c | 5 +-
xen/arch/x86/msr.c | 8 ++-
9 files changed, 86 insertions(+), 82 deletions(-)
base-commit: a3a1e61ce9a00c5a0c8003bad8f1285360399cf4
--
2.43.0
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