David Venhoff
cfcea9ee67
Based off b80915eb99
and compacted into a single commit so that it will fit on the uni git server
75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/*
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* KVM-PT userspace support test program
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* (c) Sergej Schumilo, 2016 <sergej@schumilo.de>
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*
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <err.h>
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#include <fcntl.h>
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#include <linux/kvm.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#define KVM_VMX_PT_SUPPORTED _IO(KVMIO, 0xe4)
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#define KVM_CAP_NYX_PT 512
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#define KVM_CAP_NYX_FDL 513
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int main(){
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int kvm, ret;
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kvm = open("/dev/dell", O_RDWR | O_CLOEXEC);
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if (kvm == -1){
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printf("ERROR: KVM is not loaded!\n");
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exit(1);
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}
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ret = ioctl(kvm, KVM_CHECK_EXTENSION, KVM_CAP_NYX_PT);
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if (ret != 1){
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printf("ERROR: KVM does not support NYX_PT (%d)!\n", ret);
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exit(2);
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}
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ret = ioctl(kvm, KVM_CHECK_EXTENSION, KVM_CAP_NYX_FDL);
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if (ret != 1){
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printf("ERROR: KVM does not support NYX_PT (%d)!\n", ret);
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exit(2);
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}
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ret = ioctl(kvm, KVM_VMX_PT_SUPPORTED, NULL);
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if (ret == -1){
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printf("ERROR: KVM-PT is not loaded!\n");
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exit(2);
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}
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if (ret == -2){
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printf("ERROR: Intel PT is not supported on this CPU!\n");
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exit(3);
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}
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printf("KVM-PT is ready!\n");
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return 0;
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}
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