diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/cpu/mshyperv.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index 185d4f677ec0..229c7377a980 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -502,17 +502,32 @@ static void hv_reserve_irq_vectors(void) #define HYPERV_DBG_ASSERT_VECTOR 0x2C #define HYPERV_DBG_SERVICE_VECTOR 0x2D + /* + * The hypervisor delivers these three to the NT HAL and refuses to + * map a device interrupt to any of them. + * + * The hypervisor will provide a hint in the future when these + * vectors become available to use. + */ + #define HAL_NT_APC_VECTOR 0x1F + #define HAL_NT_DPC_VECTOR 0x2F + #define HAL_NT_CLOCK_IPI_VECTOR 0xD2 + if (cpu_feature_enabled(X86_FEATURE_FRED)) return; if (test_and_set_bit(HYPERV_DBG_ASSERT_VECTOR, system_vectors) || test_and_set_bit(HYPERV_DBG_SERVICE_VECTOR, system_vectors) || - test_and_set_bit(HYPERV_DBG_FASTFAIL_VECTOR, system_vectors)) + test_and_set_bit(HYPERV_DBG_FASTFAIL_VECTOR, system_vectors) || + test_and_set_bit(HAL_NT_APC_VECTOR, system_vectors) || + test_and_set_bit(HAL_NT_DPC_VECTOR, system_vectors) || + test_and_set_bit(HAL_NT_CLOCK_IPI_VECTOR, system_vectors)) BUG(); - pr_info("Hyper-V: reserve vectors: 0x%x 0x%x 0x%x\n", + pr_info("Hyper-V: reserve vectors: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", HYPERV_DBG_ASSERT_VECTOR, HYPERV_DBG_SERVICE_VECTOR, - HYPERV_DBG_FASTFAIL_VECTOR); + HYPERV_DBG_FASTFAIL_VECTOR, HAL_NT_APC_VECTOR, + HAL_NT_DPC_VECTOR, HAL_NT_CLOCK_IPI_VECTOR); } static void __init ms_hyperv_init_platform(void) |