From 08e9d12077fcc7c4c4579d7dcd8093b59b01369e Mon Sep 17 00:00:00 2001 From: Dexuan Cui Date: Thu, 24 Aug 2023 01:07:03 -0700 Subject: x86/hyperv: Add hv_isolation_type_tdx() to detect TDX guests No logic change to SNP/VBS guests. hv_isolation_type_tdx() will be used to instruct a TDX guest on Hyper-V to do some TDX-specific operations, e.g. for a fully enlightened TDX guest (i.e. without the paravisor), hv_do_hypercall() should use __tdx_hypercall() and such a guest on Hyper-V should handle the Hyper-V Event/Message/Monitor pages specially. Reviewed-by: Michael Kelley Reviewed-by: Tianyu Lan Signed-off-by: Dexuan Cui Signed-off-by: Wei Liu Link: https://lore.kernel.org/r/20230824080712.30327-2-decui@microsoft.com --- drivers/hv/hv_common.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/hv/hv_common.c') diff --git a/drivers/hv/hv_common.c b/drivers/hv/hv_common.c index 2d43ba2bc925..da3307533f4d 100644 --- a/drivers/hv/hv_common.c +++ b/drivers/hv/hv_common.c @@ -521,6 +521,12 @@ bool __weak hv_isolation_type_en_snp(void) } EXPORT_SYMBOL_GPL(hv_isolation_type_en_snp); +bool __weak hv_isolation_type_tdx(void) +{ + return false; +} +EXPORT_SYMBOL_GPL(hv_isolation_type_tdx); + void __weak hv_setup_vmbus_handler(void (*handler)(void)) { } -- cgit v1.2.3