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    Subject[PATCH 14/21] amd64_edac: add msr accessors operating on all cpus
    Date
    From: Doug Thompson <dougthompson@xmission.com>

    Signed-off-by: Doug Thompson <dougthompson@xmission.com>
    Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
    ---
    drivers/edac/amd64_edac.c | 42 ++++++++++++++++++++++++++++++++++++++++++
    1 files changed, 42 insertions(+), 0 deletions(-)

    diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
    index ac4e265..49c0ce0 100644
    --- a/drivers/edac/amd64_edac.c
    +++ b/drivers/edac/amd64_edac.c
    @@ -3121,4 +3121,46 @@ static struct pci_dev *pci_get_related_function(unsigned int vendor,
    return dev;
    }

    +/* stolen from msr.c - the calls in msr.c could be exported */
    +struct msr_command {
    + int cpu;
    + int err;
    + u32 reg;
    + u32 data[2];
    +};
    +
    +static void smp_wrmsr(void *cmd_block)
    +{
    + struct msr_command *cmd = cmd_block;
    + wrmsr(cmd->reg, cmd->data[0], cmd->data[1]);
    +}
    +
    +static void smp_rdmsr(void *cmd_block)
    +{
    + struct msr_command *cmd = cmd_block;
    + rdmsr(cmd->reg, cmd->data[0], cmd->data[1]);
    +}
    +
    +static void do_wrmsr(int cpu, u32 reg, u32 eax, u32 edx)
    +{
    + struct msr_command cmd;
    +
    + cmd.cpu = raw_smp_processor_id();
    + cmd.reg = reg;
    + cmd.data[0] = eax;
    + cmd.data[1] = edx;
    + on_each_cpu(smp_wrmsr, &cmd, 1);
    +}
    +
    +static void do_rdmsr(int cpu, u32 reg, u32 *eax, u32 *edx)
    +{
    + struct msr_command cmd;
    +
    + cmd.cpu = raw_smp_processor_id();
    + cmd.reg = reg;
    + on_each_cpu(smp_rdmsr, &cmd, 1);
    + *eax = cmd.data[0];
    + *edx = cmd.data[1];
    +}
    +

    --
    1.6.2.4



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