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(parent: 75313e4) | patch
x86: command line option to avoid use of secondary hyper-threads
authorJan Beulich <jbeulich@suse.com>
Mon, 30 Jul 2018 09:26:16 +0000 (11:26 +0200)
committerJan Beulich <jbeulich@suse.com>
Mon, 30 Jul 2018 09:26:16 +0000 (11:26 +0200)
commit353edf12c865d2a1e24173aac841452b90614915
tree701c566f917953c0b142ed2ca60d8f8b0abca421tree | snapshot
parent75313e478e894176056e1fc5852136b344a0dc70commit | diff
x86: command line option to avoid use of secondary hyper-threads

Shared resources (L1 cache and TLB in particular) present a risk of
information leak via side channels. Provide a means to avoid use of
hyperthreads in such cases.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
master commit: d8f974f1a646c0200b97ebcabb808324b288fadb
master date: 2018-07-19 13:43:33 +0100
docs/misc/xen-command-line.markdown diff | blob | history
xen/arch/x86/setup.c diff | blob | history
xen/arch/x86/sysctl.c diff | blob | history
xen/include/asm-x86/setup.h diff | blob | history
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