The main purpose is patch 2. The "l1tf-barrier" work currently causes a perf hit and gains no safety, and is therefore unfit for inclusion into Xen 4.13 at this time.
Andrew Cooper (2): xen/nospec: Introduce CONFIG_SPECULATIVE_ARRAY_HARDEN xen/nospec: Introduce CONFIG_SPECULATIVE_BRANCH_HARDEN and disable it docs/misc/xen-command-line.pandoc | 8 +------- xen/arch/x86/spec_ctrl.c | 17 ++--------------- xen/common/Kconfig | 38 ++++++++++++++++++++++++++++++++++++++ xen/include/asm-x86/cpufeatures.h | 2 +- xen/include/asm-x86/nospec.h | 4 ++-- xen/include/asm-x86/spec_ctrl.h | 1 - xen/include/xen/nospec.h | 12 ++++++++++++ 7 files changed, 56 insertions(+), 26 deletions(-) -- 2.11.0 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
