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authorMichael Kelley <mikelley@microsoft.com>2021-03-02 13:38:14 -0800
committerWei Liu <wei.liu@kernel.org>2021-03-08 17:32:59 +0000
commit5e4e6ddf8d74068fd6bb7922dabcfa2c0f506c39 (patch)
treefb95729b2ed48143414b0465ea75c7eb20f36c7b
parentca48739e59df31d16c27dbcd9ea2ea61d7caa9fb (diff)
downloadlinux-5e4e6ddf8d74068fd6bb7922dabcfa2c0f506c39.tar.bz2
x86/hyper-v: Move hv_message_type to architecture neutral module
The definition of enum hv_message_type includes arch neutral and x86/x64-specific values. Ideally there would be a way to put the arch neutral values in an arch neutral module, and the arch specific values in an arch specific module. But C doesn't provide a way to extend enum types. As a compromise, move the entire definition into an arch neutral module, to avoid duplicating the arch neutral values for x86/x64 and for ARM64. No functional change. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Link: https://lore.kernel.org/r/1614721102-2241-3-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org>
-rw-r--r--arch/x86/include/asm/hyperv-tlfs.h29
-rw-r--r--include/asm-generic/hyperv-tlfs.h35
2 files changed, 35 insertions, 29 deletions
diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
index e6cd3fee562b..68b38a242705 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/asm/hyperv-tlfs.h
@@ -288,35 +288,6 @@ struct hv_tsc_emulation_status {
#define HV_X64_MSR_TSC_REFERENCE_ENABLE 0x00000001
#define HV_X64_MSR_TSC_REFERENCE_ADDRESS_SHIFT 12
-
-/* Define hypervisor message types. */
-enum hv_message_type {
- HVMSG_NONE = 0x00000000,
-
- /* Memory access messages. */
- HVMSG_UNMAPPED_GPA = 0x80000000,
- HVMSG_GPA_INTERCEPT = 0x80000001,
-
- /* Timer notification messages. */
- HVMSG_TIMER_EXPIRED = 0x80000010,
-
- /* Error messages. */
- HVMSG_INVALID_VP_REGISTER_VALUE = 0x80000020,
- HVMSG_UNRECOVERABLE_EXCEPTION = 0x80000021,
- HVMSG_UNSUPPORTED_FEATURE = 0x80000022,
-
- /* Trace buffer complete messages. */
- HVMSG_EVENTLOG_BUFFERCOMPLETE = 0x80000040,
-
- /* Platform-specific processor intercept messages. */
- HVMSG_X64_IOPORT_INTERCEPT = 0x80010000,
- HVMSG_X64_MSR_INTERCEPT = 0x80010001,
- HVMSG_X64_CPUID_INTERCEPT = 0x80010002,
- HVMSG_X64_EXCEPTION_INTERCEPT = 0x80010003,
- HVMSG_X64_APIC_EOI = 0x80010004,
- HVMSG_X64_LEGACY_FP_ERROR = 0x80010005
-};
-
struct hv_nested_enlightenments_control {
struct {
__u32 directhypercall:1;
diff --git a/include/asm-generic/hyperv-tlfs.h b/include/asm-generic/hyperv-tlfs.h
index 83448e837ded..9cf10837d005 100644
--- a/include/asm-generic/hyperv-tlfs.h
+++ b/include/asm-generic/hyperv-tlfs.h
@@ -220,6 +220,41 @@ enum HV_GENERIC_SET_FORMAT {
#define HV_MESSAGE_PAYLOAD_BYTE_COUNT (240)
#define HV_MESSAGE_PAYLOAD_QWORD_COUNT (30)
+/*
+ * Define hypervisor message types. Some of the message types
+ * are x86/x64 specific, but there's no good way to separate
+ * them out into the arch-specific version of hyperv-tlfs.h
+ * because C doesn't provide a way to extend enum types.
+ * Keeping them all in the arch neutral hyperv-tlfs.h seems
+ * the least messy compromise.
+ */
+enum hv_message_type {
+ HVMSG_NONE = 0x00000000,
+
+ /* Memory access messages. */
+ HVMSG_UNMAPPED_GPA = 0x80000000,
+ HVMSG_GPA_INTERCEPT = 0x80000001,
+
+ /* Timer notification messages. */
+ HVMSG_TIMER_EXPIRED = 0x80000010,
+
+ /* Error messages. */
+ HVMSG_INVALID_VP_REGISTER_VALUE = 0x80000020,
+ HVMSG_UNRECOVERABLE_EXCEPTION = 0x80000021,
+ HVMSG_UNSUPPORTED_FEATURE = 0x80000022,
+
+ /* Trace buffer complete messages. */
+ HVMSG_EVENTLOG_BUFFERCOMPLETE = 0x80000040,
+
+ /* Platform-specific processor intercept messages. */
+ HVMSG_X64_IOPORT_INTERCEPT = 0x80010000,
+ HVMSG_X64_MSR_INTERCEPT = 0x80010001,
+ HVMSG_X64_CPUID_INTERCEPT = 0x80010002,
+ HVMSG_X64_EXCEPTION_INTERCEPT = 0x80010003,
+ HVMSG_X64_APIC_EOI = 0x80010004,
+ HVMSG_X64_LEGACY_FP_ERROR = 0x80010005
+};
+
/* Define synthetic interrupt controller message flags. */
union hv_message_flags {
__u8 asu8;