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Created new CPUID leaf 0x4FFFFFFF and 0x4FFFFFFD #752

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Created new CPUID leaf 0x4FFFFFFF and 0x4FFFFFFD #752

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bde2eb5
Adding comments
rashmisarode Oct 20, 2019
87ef8d5
hypercall implementation done
rashmisarode Oct 23, 2019
0674f40
Merge pull request #1 from rashmisarode/test
rashmisarode Oct 23, 2019
35ec3ea
Created new CPUID leaf 0x4FFFFFFF and 0x4FFFFFFD
rashmisarode Nov 16, 2019
7a06c1d
Merge branch 'master' into test
rashmisarode Nov 16, 2019
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160 changes: 159 additions & 1 deletion arch/x86/kvm/cpuid.c
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,14 @@
#include "trace.h"
#include "pmu.h"

u32 exit_count=0;
int exit_reason_arr[70]= {};
u64 net_exit_time = 0;
EXPORT_SYMBOL(exit_count);
EXPORT_SYMBOL(exit_reason_arr);
EXPORT_SYMBOL(net_exit_time);


static u32 xstate_required_size(u64 xstate_bv, bool compacted)
{
int feature_bit = 0;
Expand Down Expand Up @@ -1046,7 +1054,157 @@ int kvm_emulate_cpuid(struct kvm_vcpu *vcpu)

eax = kvm_rax_read(vcpu);
ecx = kvm_rcx_read(vcpu);
kvm_cpuid(vcpu, &eax, &ebx, &ecx, &edx, true);
if(eax==0x4fffffff){
//kvm_cpuid(vcpu, &eax, &ebx, &ecx, &edx, true);
eax=(u32)exit_count;
printk("\r\nExit count : %u\r\n",(u32)exit_count);

} else if(eax == 0x4ffffffd) {
switch(ecx) {
case 0: eax = exit_reason_arr[0];
break;
case 1: eax = exit_reason_arr[1];
break;
case 2: eax = exit_reason_arr[2];
break;
case 7: eax = exit_reason_arr[7];
break;
case 8: eax = exit_reason_arr[8];
break;
case 9: eax = exit_reason_arr[9];
break;
case 10: eax = exit_reason_arr[10];
break;
case 12: eax = exit_reason_arr[12];
break;
case 13: eax = exit_reason_arr[13];
break;
case 14: eax = exit_reason_arr[14];
break;
case 15: eax = exit_reason_arr[15];
break;
case 18: eax = exit_reason_arr[18];
break;
case 19: eax = exit_reason_arr[19];
break;
case 20: eax = exit_reason_arr[20];
break;
case 21: eax = exit_reason_arr[21];
break;
case 22: eax = exit_reason_arr[22];
break;
case 23: eax = exit_reason_arr[23];
break;
case 24: eax = exit_reason_arr[24];
break;
case 25: eax = exit_reason_arr[25];
break;
case 26: eax = exit_reason_arr[26];
break;
case 27: eax = exit_reason_arr[27];
break;
case 28: eax = exit_reason_arr[28];
break;
case 29: eax = exit_reason_arr[29];
break;
case 30: eax = exit_reason_arr[30];
break;
case 31: eax = exit_reason_arr[31];
break;
case 32: eax = exit_reason_arr[32];
break;
case 36: eax = exit_reason_arr[36];
break;
case 37: eax = exit_reason_arr[37];
break;
case 39: eax = exit_reason_arr[39];
break;
case 40: eax = exit_reason_arr[40];
break;
case 41: eax = exit_reason_arr[41];
break;
case 43: eax = exit_reason_arr[43];
break;
case 44: eax = exit_reason_arr[44];
break;
case 45: eax = exit_reason_arr[45];
break;
case 46: eax = exit_reason_arr[46];
break;
case 47: eax = exit_reason_arr[47];
break;
case 48: eax = exit_reason_arr[48];
break;
case 49: eax = exit_reason_arr[49];
break;
case 50: eax = exit_reason_arr[50];
break;
case 52: eax = exit_reason_arr[52];
break;
case 53: eax = exit_reason_arr[53];
break;
case 54: eax = exit_reason_arr[54];
break;
case 55: eax = exit_reason_arr[55];
break;
case 56: eax = exit_reason_arr[56];
break;
case 57: eax = exit_reason_arr[57];
break;
case 58: eax = exit_reason_arr[58];
break;
case 59: eax = exit_reason_arr[59];
break;
case 60: eax = exit_reason_arr[60];
break;
case 61: eax = exit_reason_arr[61];
break;
case 62: eax = exit_reason_arr[62];
break;
case 63: eax = exit_reason_arr[63];
break;
case 64: eax = exit_reason_arr[64];
break;
case 67: eax = exit_reason_arr[67];
break;
case 68: eax = exit_reason_arr[68];
break;
case 35:
case 38:
case 42:
case 65: {
eax = 0x00000000;
ebx = 0x00000000;
ecx = 0x00000000;
edx = 0xFFFFFFFF;
}
break;
case 3:
case 4:
case 5:
case 6:
case 11:
case 16:
case 17:
case 33:
case 34:
case 51:
case 66:
{
eax = 0x00000000;
ebx = 0x00000000;
ecx = 0x00000000;
edx = 0x00000000;
}
break;



}
}
else {
kvm_cpuid(vcpu, &eax, &ebx, &ecx, &edx, true);
}
kvm_rax_write(vcpu, eax);
kvm_rbx_write(vcpu, ebx);
kvm_rcx_write(vcpu, ecx);
Expand Down
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