• Thomas Gleixner's avatar
    x86/speculation: Rename SSBD update functions · 999b295a
    Thomas Gleixner authored
    commit 26c4d75b upstream
    
    During context switch, the SSBD bit in SPEC_CTRL MSR is updated according
    to changes of the TIF_SSBD flag in the current and next running task.
    
    Currently, only the bit controlling speculative store bypass disable in
    SPEC_CTRL MSR is updated and the related update functions all have
    "speculative_store" or "ssb" in their names.
    
    For enhanced mitigation control other bits in SPEC_CTRL MSR need to be
    updated as well, which makes the SSB names inadequate.
    
    Rename the "speculative_store*" functions to a more generic name. No
    functional change.
    Signed-off-by: default avatarTim Chen <tim.c.chen@linux.intel.com>
    Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
    Reviewed-by: default avatarIngo Molnar <mingo@kernel.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Andy Lutomirski <luto@kernel.org>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Jiri Kosina <jkosina@suse.cz>
    Cc: Tom Lendacky <thomas.lendacky@amd.com>
    Cc: Josh Poimboeuf <jpoimboe@redhat.com>
    Cc: Andrea Arcangeli <aarcange@redhat.com>
    Cc: David Woodhouse <dwmw@amazon.co.uk>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: Dave Hansen <dave.hansen@intel.com>
    Cc: Casey Schaufler <casey.schaufler@intel.com>
    Cc: Asit Mallick <asit.k.mallick@intel.com>
    Cc: Arjan van de Ven <arjan@linux.intel.com>
    Cc: Jon Masters <jcm@redhat.com>
    Cc: Waiman Long <longman9394@gmail.com>
    Cc: Greg KH <gregkh@linuxfoundation.org>
    Cc: Dave Stewart <david.c.stewart@intel.com>
    Cc: Kees Cook <keescook@chromium.org>
    Cc: stable@vger.kernel.org
    Link: https://lkml.kernel.org/r/20181125185004.058866968@linutronix.deSigned-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    999b295a
bugs.c 25.6 KB