From d6e0228d265f29348a01780ff306321c399d8b95 Mon Sep 17 00:00:00 2001 From: Dexuan Cui Date: Thu, 24 Aug 2023 01:07:04 -0700 Subject: x86/hyperv: Support hypercalls for fully enlightened TDX guests A fully enlightened TDX guest on Hyper-V (i.e. without the paravisor) only uses the GHCI call rather than hv_hypercall_pg. Do not initialize hypercall_pg for such a guest. In hv_common_cpu_init(), the hyperv_pcpu_input_arg page needs to be decrypted in such a guest. Reviewed-by: Kuppuswamy Sathyanarayanan Reviewed-by: Michael Kelley Reviewed-by: Tianyu Lan Signed-off-by: Dexuan Cui Signed-off-by: Wei Liu Link: https://lore.kernel.org/r/20230824080712.30327-3-decui@microsoft.com --- include/asm-generic/mshyperv.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/asm-generic') diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h index 82eba2d5fc4c..f577eff58ea0 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -283,6 +283,7 @@ enum hv_isolation_type hv_get_isolation_type(void); bool hv_is_isolation_supported(void); bool hv_isolation_type_snp(void); u64 hv_ghcb_hypercall(u64 control, void *input, void *output, u32 input_size); +u64 hv_tdx_hypercall(u64 control, u64 param1, u64 param2); void hyperv_cleanup(void); bool hv_query_ext_cap(u64 cap_query); void hv_setup_dma_ops(struct device *dev, bool coherent); -- cgit