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[client] main: detect and warn on sub-optimal guest CPU configuration

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This commit is contained in:
Geoffrey McRae
2023-04-02 20:13:14 +10:00
parent 996e1b2f7a
commit 28e74a73a4
1 changed files with 50 additions and 0 deletions
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50
client/src/main.c
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@@ -1599,6 +1599,56 @@ restart:
vmInfo->sockets, vmInfo->cores, vmInfo->cpus);
DEBUG_INFO("Using : %s", vmInfo->capture);
bool hostHasSMP = false;
bool guestHasSMP = false;
bool guestCPUPt = false;
bool hostIsAMD = false;
{
char model[1024];
int procs;
int cores;
int sockets;
if (lgCPUInfo(model, sizeof model, &procs, &cores, &sockets) &&
procs > cores)
hostHasSMP = true;
if (vmInfo->cpus > vmInfo->cores)
guestHasSMP = true;
if (strncmp(model, "AMD ", 4) == 0)
hostIsAMD = true;
if (strcmp(vmInfo->model, model) == 0)
guestCPUPt = true;
}
if (hostHasSMP && !guestHasSMP)
{
DEBUG_BREAK();
DEBUG_WARN(
"I have detected you have a CPU with hyperthreads but your guest"
" is not aware of this");
DEBUG_WARN(
"This will result in a degredation of latency sensitive tasks"
" including the use of Looking Glass");
if (hostIsAMD || true)
DEBUG_WARN("As you have an AMD CPU, please be sure you have enabled"
" the `topoext` cpu feature flag for your virtual machine");
DEBUG_BREAK();
}
if (!guestCPUPt)
{
DEBUG_BREAK();
DEBUG_WARN(
"Your guest is unaware of the acceleration features your CPU has");
DEBUG_WARN(
"Please be sure to set your CPU type to `host-passthrough` in"
" your VM configuration");
DEBUG_BREAK();
}
bool uuidValid = false;
for(int i = 0; i < sizeof(vmInfo->uuid); ++i)
if (vmInfo->uuid[i])