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    Subject[PATCH 5.12 131/161] dmaengine: idxd: Use cpu_feature_enabled()
    Date
    From: Borislav Petkov <bp@suse.de>

    commit 74b2fc882d380d8fafc2a26f01d401c2a7beeadb upstream.

    When testing x86 feature bits, use cpu_feature_enabled() so that
    build-disabled features can remain off, regardless of what CPUID says.

    Fixes: 8e50d392652f ("dmaengine: idxd: Add shared workqueue support")
    Signed-off-by: Borislav Petkov <bp@suse.de>
    Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
    Acked-By: Vinod Koul <vkoul@kernel.org>
    Cc: <stable@vger.kernel.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/dma/idxd/init.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    --- a/drivers/dma/idxd/init.c
    +++ b/drivers/dma/idxd/init.c
    @@ -675,12 +675,12 @@ static int __init idxd_init_module(void)
    * If the CPU does not support MOVDIR64B or ENQCMDS, there's no point in
    * enumerating the device. We can not utilize it.
    */
    - if (!boot_cpu_has(X86_FEATURE_MOVDIR64B)) {
    + if (!cpu_feature_enabled(X86_FEATURE_MOVDIR64B)) {
    pr_warn("idxd driver failed to load without MOVDIR64B.\n");
    return -ENODEV;
    }

    - if (!boot_cpu_has(X86_FEATURE_ENQCMD))
    + if (!cpu_feature_enabled(X86_FEATURE_ENQCMD))
    pr_warn("Platform does not have ENQCMD(S) support.\n");
    else
    support_enqcmd = true;

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