lkml.org 
[lkml]   [2023]   [Oct]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 07/12] x86/mce/inject: Wire up the x86 MCE injector to FADV_MCE_INJECT
    Date
    From: Isaku Yamahata <isaku.yamahata@intel.com>

    To inject machine check based on FADV_MCE_INJECT, wire up the x86 MCE
    injector to register its handler to get notified physical address on
    FADV_MCE_INJECT.

    Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
    ---
    arch/x86/kernel/cpu/mce/inject.c | 13 +++++++++++++
    1 file changed, 13 insertions(+)

    diff --git a/arch/x86/kernel/cpu/mce/inject.c b/arch/x86/kernel/cpu/mce/inject.c
    index ae3efbeb78bd..43d896a89648 100644
    --- a/arch/x86/kernel/cpu/mce/inject.c
    +++ b/arch/x86/kernel/cpu/mce/inject.c
    @@ -294,6 +294,17 @@ static struct notifier_block inject_nb = {
    .notifier_call = mce_inject_raise,
    };

    +static int fadvise_inject_addr(struct notifier_block *nb, unsigned long val,
    + void *data)
    +{
    + inj_addr_set(&i_mce, val);
    + return NOTIFY_DONE;
    +}
    +
    +static struct notifier_block fadvise_nb = {
    + .notifier_call = fadvise_inject_addr,
    +}
    +
    /*
    * Caller needs to be make sure this cpu doesn't disappear
    * from under us, i.e.: get_cpu/put_cpu.
    @@ -784,6 +795,7 @@ static int __init inject_init(void)

    register_nmi_handler(NMI_LOCAL, mce_raise_notify, 0, "mce_notify");
    mce_register_injector_chain(&inject_nb);
    + fadvise_register_mce_injector_chain(&fadvise_nb);

    setup_inj_struct(&i_mce);

    @@ -795,6 +807,7 @@ static int __init inject_init(void)
    static void __exit inject_exit(void)
    {

    + fadvise_unregister_mce_injector_chain(&fadvise_nb);
    mce_unregister_injector_chain(&inject_nb);
    unregister_nmi_handler(NMI_LOCAL, "mce_notify");

    --
    2.25.1
    \
     
     \ /
      Last update: 2023-10-10 10:37    [W:2.217 / U:0.416 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site