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Changelog: Add details about new features for SPR
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Acked-by: Henry Wang <Henry.Wang@arm.com>
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@@ -6,6 +6,14 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
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## [unstable UNRELEASED](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=staging) - TBD
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### Added
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- On x86, support for features new in Intel Sapphire Rapids CPUs:
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- PKS (Protection Key Supervisor) available to HVM/PVH guests.
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- VM-Notify used by Xen to mitigate certain micro-architectural pipeline
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livelocks, instead of crashing the entire server.
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- Bus-lock detection, used by Xen to mitigate (by rate-limiting) the system
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wide impact of a guest misusing atomic instructions.
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## [4.17.0](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=RELEASE-4.17.0) - 2022-12-12
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### Changed
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