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Andrew Cooper
9df52a25e0
To combat GPZ SP4 "Speculative Store Bypass", Intel have extended their speculative sidechannel mitigations specification as follows: * A feature bit to indicate that Speculative Store Bypass Disable is supported. * A new bit in MSR_SPEC_CTRL which, when set, disables memory disambiguation in the pipeline. * A new bit in MSR_ARCH_CAPABILITIES, which will be set in future hardware, indicating that the hardware is not susceptible to Speculative Store Bypass sidechannels. For contemporary processors, this interface will be implemented via a microcode update. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Reviewed-by: Jan Beulich <jbeulich@suse.com>
xen-bugtool =========== The xen-bugtool command line application will collate the Xen dmesg output, details of the hardware configuration of your machine, information about the build of Xen that you are using, plus, if you allow it, various logs. The information collated can either be posted to a Xen Bugzilla bug (this bug must already exist in the system, and you must be a registered user there), or it can be saved as a .tar.bz2 for sending or archiving. The collated logs may contain private information, and if you are at all worried about that, you should not use this tool, or you should explicitly exclude those logs from the archive. xen-bugtool is wholly interactive, so simply run it, and answer the questions.