lkml.org 
[lkml]   [2014]   [Dec]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[v2 25/25] iommu/vt-d: Add a command line parameter for VT-d posted-interrupts
    Date
    Enable VT-d Posted-Interrtups and add a command line
    parameter for it.

    Signed-off-by: Feng Wu <feng.wu@intel.com>
    ---
    Documentation/kernel-parameters.txt | 1 +
    drivers/iommu/irq_remapping.c | 12 ++++++++----
    2 files changed, 9 insertions(+), 4 deletions(-)

    diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
    index 838f377..324b790 100644
    --- a/Documentation/kernel-parameters.txt
    +++ b/Documentation/kernel-parameters.txt
    @@ -1453,6 +1453,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
    nosid disable Source ID checking
    no_x2apic_optout
    BIOS x2APIC opt-out request will be ignored
    + nopost disable Interrupt Posting

    iomem= Disable strict checking of access to MMIO memory
    strict regions from userspace.
    diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
    index b008663..aa3cd23 100644
    --- a/drivers/iommu/irq_remapping.c
    +++ b/drivers/iommu/irq_remapping.c
    @@ -24,7 +24,7 @@ int irq_remap_broken;
    int disable_sourceid_checking;
    int no_x2apic_optout;

    -int disable_irq_post = 1;
    +int disable_irq_post = 0;

    static struct irq_remap_ops *remap_ops;

    @@ -59,14 +59,18 @@ static __init int setup_irqremap(char *str)
    return -EINVAL;

    while (*str) {
    - if (!strncmp(str, "on", 2))
    + if (!strncmp(str, "on", 2)) {
    disable_irq_remap = 0;
    - else if (!strncmp(str, "off", 3))
    + disable_irq_post = 0;
    + } else if (!strncmp(str, "off", 3)) {
    disable_irq_remap = 1;
    - else if (!strncmp(str, "nosid", 5))
    + disable_irq_post = 1;
    + } else if (!strncmp(str, "nosid", 5))
    disable_sourceid_checking = 1;
    else if (!strncmp(str, "no_x2apic_optout", 16))
    no_x2apic_optout = 1;
    + else if (!strncmp(str, "nopost", 6))
    + disable_irq_post = 1;

    str += strcspn(str, ",");
    while (*str == ',')
    --
    1.7.1


    \
     
     \ /
      Last update: 2014-12-03 09:21    [W:7.621 / U:0.264 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site