Messages in this thread Patches in this message | | | Subject | Re: [PATCH v1 4/8] x86/tdx: Add arch_has_restricted_memory_access for TDX | From | "Kuppuswamy, Sathyanarayanan" <> | Date | Wed, 2 Jun 2021 21:02:28 -0700 |
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On 6/2/21 5:41 PM, Andi Kleen wrote: > +int arch_has_restricted_virtio_memory_access(void) > +{ > + return is_tdx_guest(); > +} > +EXPORT_SYMBOL_GPL(arch_has_restricted_virtio_memory_access); > +
This function definition had to be removed from arch/x86/mm/mem_encrypt.c.
Otherwise, if you enable both CONFIG_AMD_MEM_ENCRYPT, CONFIG_X86_MEM_ENCRYPT_COMMON it will generate multiple definition error.
--- a/arch/x86/mm/mem_encrypt.c +++ b/arch/x86/mm/mem_encrypt.c @@ -493,9 +493,3 @@ void __init amd_mem_encrypt_init(void)
print_mem_encrypt_feature_info(); } - -int arch_has_restricted_virtio_memory_access(void) -{ - return sev_active(); -} -EXPORT_SYMBOL_GPL(arch_has_restricted_virtio_memory_access); --- a/arch/x86/mm/mem_encrypt_common.c +++ b/arch/x86/mm/mem_encrypt_common.c @@ -40,7 +40,7 @@ void __init mem_encrypt_init(void)
int arch_has_restricted_virtio_memory_access(void) { - return is_tdx_guest(); + return (is_tdx_guest() || sev_active()); } EXPORT_SYMBOL_GPL(arch_has_restricted_virtio_memory_access);
-- Sathyanarayanan Kuppuswamy Linux Kernel Developer
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