Signed-off-by: Andrew Cooper <[email protected]> --- CC: George Dunlap <[email protected]> CC: Jan Beulich <[email protected]> CC: Stefano Stabellini <[email protected]> CC: Wei Liu <[email protected]> CC: Julien Grall <[email protected]> CC: Roger Pau Monné <[email protected]> CC: Henry Wang <[email protected]> --- CHANGELOG.md | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/CHANGELOG.md b/CHANGELOG.md index edc0d69898ed..a827054cf27d 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -18,10 +18,17 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) ### Added - On x86: + - On all Intel systems, MSR_ARCH_CAPS is now visible in guests, and + controllable from the VM's config file. For CPUs from ~2019 onwards, + this allows guest kernels to see details about hardware fixes for + speculative mitigations. (Backported as XSA-435 to older releases). - xl/libxl can customize SMBIOS strings for HVM guests. - Support for enforcing system-wide operation in Data Operand Independent Timing Mode. - Add Intel Hardware P-States (HWP) cpufreq driver. + - Support for features new in AMD Genoa CPUs: + - CPUID_USER_DIS (CPUID Faulting) used by Xen to control PV guest's view + of CPUID data. - Support for features new in Intel Sapphire Rapids CPUs: - PKS (Protection Key Supervisor) available to HVM/PVH guests. - VM-Notify used by Xen to mitigate certain micro-architectural pipeline -- 2.30.2
