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    Subject[PATCH 4.4 187/193] x86/speculation: Fix typo IBRS_ATT, which should be IBRS_ALL
    Date
    4.4-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Darren Kenny <darren.kenny@oracle.com>

    (cherry picked from commit af189c95a371b59f493dbe0f50c0a09724868881)

    Fixes: 117cc7a908c83 ("x86/retpoline: Fill return stack buffer on vmexit")
    Signed-off-by: Darren Kenny <darren.kenny@oracle.com>
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
    Cc: Tom Lendacky <thomas.lendacky@amd.com>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: Borislav Petkov <bp@alien8.de>
    Cc: Masami Hiramatsu <mhiramat@kernel.org>
    Cc: Arjan van de Ven <arjan@linux.intel.com>
    Cc: David Woodhouse <dwmw@amazon.co.uk>
    Link: https://lkml.kernel.org/r/20180202191220.blvgkgutojecxr3b@starbug-vm.ie.oracle.com
    Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
    [jwang: cherry pick to 4.4]
    Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    arch/x86/include/asm/nospec-branch.h | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/arch/x86/include/asm/nospec-branch.h
    +++ b/arch/x86/include/asm/nospec-branch.h
    @@ -178,7 +178,7 @@ extern char __indirect_thunk_end[];
    * On VMEXIT we must ensure that no RSB predictions learned in the guest
    * can be followed in the host, by overwriting the RSB completely. Both
    * retpoline and IBRS mitigations for Spectre v2 need this; only on future
    - * CPUs with IBRS_ATT *might* it be avoided.
    + * CPUs with IBRS_ALL *might* it be avoided.
    */
    static inline void vmexit_fill_RSB(void)
    {

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