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drivers: hv: mshv_vtl: disable TSC_ADJUST handling for CONFIG_HYPERV_VTL_MODE #120

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drivers: hv: mshv_vtl: disable TSC_ADJUST handling for CONFIG_HYPERV_VTL_MODE #120

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8 changes: 8 additions & 0 deletions arch/x86/hyperv/hv_vtl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -85,6 +85,14 @@ void __init hv_vtl_init_platform(void)
{
pr_info("Linux runs in Hyper-V Virtual Trust Level\n");

/*
* Disable TSC_ADJUST so that the periodic TSC sync check timer
* (start_sync_check_timer) and related TSC adjustment logic are
* skipped. The TSC exposed via Hyper-V will be consistent across
* processors.
*/
setup_clear_cpu_cap(X86_FEATURE_TSC_ADJUST);

x86_init.resources.probe_roms = x86_init_noop;
/* There is no paravisor present if we are here. */
if (hv_isolation_type_tdx()) {
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