This series deals with the hanlding of the RSBA and RRSBA bits across all parts and all mistakes encountered in various microcode versions.
There are substantial changes from v1, following a clarification from Intel. Importantly, CPUs are not expected to enumerate both RSBA and RRSBA, therefore we should do the same for VMs. Andrew Cooper (3): x86/spec-ctrl: Rename retpoline_safe() to retpoline_calculations() x86/spec-ctrl: Fix up the RSBA/RRSBA bits as appropriate x86/cpu-policy: Derive RSBA/RRSBA for guest policies xen/arch/x86/cpu-policy.c | 53 ++++++++ xen/arch/x86/include/asm/cpufeature.h | 1 + xen/arch/x86/spec_ctrl.c | 131 +++++++++++++++++--- xen/include/public/arch-x86/cpufeatureset.h | 4 +- xen/tools/gen-cpuid.py | 5 +- 5 files changed, 172 insertions(+), 22 deletions(-) -- 2.30.2
