diff options
Diffstat (limited to 'drivers/platform/x86/intel_pmc_core_pltdrv.c')
| -rw-r--r-- | drivers/platform/x86/intel_pmc_core_pltdrv.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel_pmc_core_pltdrv.c b/drivers/platform/x86/intel_pmc_core_pltdrv.c index e1266f5c6359..42ed02ab8a61 100644 --- a/drivers/platform/x86/intel_pmc_core_pltdrv.c +++ b/drivers/platform/x86/intel_pmc_core_pltdrv.c @@ -18,6 +18,8 @@ #include <asm/cpu_device_id.h> #include <asm/intel-family.h> +#include <xen/xen.h> + static void intel_pmc_core_release(struct device *dev) { /* Nothing to do. */ @@ -56,6 +58,13 @@ static int __init pmc_core_platform_init(void) if (acpi_dev_present("INT33A1", NULL, -1)) return -ENODEV; + /* + * Skip forcefully attaching the device for VMs. Make an exception for + * Xen dom0, which does have full hardware access. + */ + if (cpu_feature_enabled(X86_FEATURE_HYPERVISOR) && !xen_initial_domain()) + return -ENODEV; + if (!x86_match_cpu(intel_pmc_core_platform_ids)) return -ENODEV; |