diff options
Diffstat (limited to 'drivers/platform/x86/intel_pmc_core_pltdrv.c')
| -rw-r--r-- | drivers/platform/x86/intel_pmc_core_pltdrv.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/platform/x86/intel_pmc_core_pltdrv.c b/drivers/platform/x86/intel_pmc_core_pltdrv.c index e1266f5c6359..af53596af335 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. */ @@ -38,14 +40,14 @@ static struct platform_device pmc_core_device = { * other list may grow, but this list should not. */ static const struct x86_cpu_id intel_pmc_core_platform_ids[] = { - INTEL_CPU_FAM6(SKYLAKE_L, pmc_core_device), - INTEL_CPU_FAM6(SKYLAKE, pmc_core_device), - INTEL_CPU_FAM6(KABYLAKE_L, pmc_core_device), - INTEL_CPU_FAM6(KABYLAKE, pmc_core_device), - INTEL_CPU_FAM6(CANNONLAKE_L, pmc_core_device), - INTEL_CPU_FAM6(ICELAKE_L, pmc_core_device), - INTEL_CPU_FAM6(COMETLAKE, pmc_core_device), - INTEL_CPU_FAM6(COMETLAKE_L, pmc_core_device), + X86_MATCH_INTEL_FAM6_MODEL(SKYLAKE_L, &pmc_core_device), + X86_MATCH_INTEL_FAM6_MODEL(SKYLAKE, &pmc_core_device), + X86_MATCH_INTEL_FAM6_MODEL(KABYLAKE_L, &pmc_core_device), + X86_MATCH_INTEL_FAM6_MODEL(KABYLAKE, &pmc_core_device), + X86_MATCH_INTEL_FAM6_MODEL(CANNONLAKE_L, &pmc_core_device), + X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_L, &pmc_core_device), + X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE, &pmc_core_device), + X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE_L, &pmc_core_device), {} }; MODULE_DEVICE_TABLE(x86cpu, intel_pmc_core_platform_ids); @@ -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; |