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authorDexuan Cui <decui@microsoft.com>2023-08-24 01:07:03 -0700
committerWei Liu <wei.liu@kernel.org>2023-08-25 00:04:56 +0000
commit08e9d12077fcc7c4c4579d7dcd8093b59b01369e (patch)
tree95784ca8040bc7c12a548bd874c51234ac32e11f /drivers/hv
parent86e619c922e616d8780833562a14a5bda329f0c3 (diff)
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 <mikelley@microsoft.com> Reviewed-by: Tianyu Lan <tiala@microsoft.com> Signed-off-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Wei Liu <wei.liu@kernel.org> Link: https://lore.kernel.org/r/20230824080712.30327-2-decui@microsoft.com
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/hv_common.c6
1 files changed, 6 insertions, 0 deletions
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))
{
}