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authorLiran Alon <liran.alon@oracle.com>2020-03-12 18:54:30 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2020-06-10 12:09:53 -0400
commitd6048bfd12e24a0980ba2040cfaa2b101df3fa16 (patch)
treef2b1a95464637316cb61b8f14073511fd018b00d /include/hw/i386
parent73b994f6d74ec00a1d78daf4145096ff9f0e2982 (diff)
downloadfocaccia-qemu-d6048bfd12e24a0980ba2040cfaa2b101df3fa16.tar.gz
focaccia-qemu-d6048bfd12e24a0980ba2040cfaa2b101df3fa16.zip
hw/i386/vmport: Add support for CMD_GETHZ
This command returns to guest information on LAPIC bus frequency and TSC
frequency.

One can see how this interface is used by Linux vmware_platform_setup()
introduced in Linux commit 88b094fb8d4f ("x86: Hypervisor detection and
get tsc_freq from hypervisor").

Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Message-Id: <20200312165431.82118-16-liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/hw/i386')
-rw-r--r--include/hw/i386/vmport.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/hw/i386/vmport.h b/include/hw/i386/vmport.h
index 7656432358..c380b9c1f0 100644
--- a/include/hw/i386/vmport.h
+++ b/include/hw/i386/vmport.h
@@ -13,6 +13,7 @@ typedef enum {
     VMPORT_CMD_VMMOUSE_DATA     = 39,
     VMPORT_CMD_VMMOUSE_STATUS   = 40,
     VMPORT_CMD_VMMOUSE_COMMAND  = 41,
+    VMPORT_CMD_GETHZ            = 45,
     VMPORT_CMD_GET_VCPU_INFO    = 68,
     VMPORT_ENTRIES
 } VMPortCommand;