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Tue, 05 Oct 2021 14:16:15 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxtb8LTfG/dRjz36MwYMT+NJj6lnh+qHKrO3g9J6YLdlRJ50NicY6382ueBCb6u7YJyaAIV0Q== X-Received: by 2002:a4a:8789:: with SMTP id b9mr5679705ooi.9.1633468575245; Tue, 05 Oct 2021 14:16:15 -0700 (PDT) Received: from treble ([2600:1700:6e32:6c00::15]) by smtp.gmail.com with ESMTPSA id j4sm3573872oia.56.2021.10.05.14.16.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Oct 2021 14:16:14 -0700 (PDT) Date: Tue, 5 Oct 2021 14:16:11 -0700 From: Josh Poimboeuf To: Kuppuswamy Sathyanarayanan Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, Paolo Bonzini , David Hildenbrand , Andrea Arcangeli , Juergen Gross , Deep Shah , VMware Inc , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Peter H Anvin , Dave Hansen , Tony Luck , Dan Williams , Andi Kleen , Kirill Shutemov , Sean Christopherson , Kuppuswamy Sathyanarayanan , linux-kernel@vger.kernel.org Subject: Re: [PATCH v8 04/11] x86/tdx: Add Intel ARCH support to cc_platform_has() Message-ID: <20211005211611.ys42txybaed4ffpz@treble> References: <20211005025205.1784480-1-sathyanarayanan.kuppuswamy@linux.intel.com> <20211005025205.1784480-5-sathyanarayanan.kuppuswamy@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20211005025205.1784480-5-sathyanarayanan.kuppuswamy@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 04, 2021 at 07:51:58PM -0700, Kuppuswamy Sathyanarayanan wrote: > +#if defined(CONFIG_CPU_SUP_INTEL) && defined(CONFIG_ARCH_HAS_CC_PLATFORM) > +bool intel_cc_platform_has(enum cc_attr attr); > +#else > +static inline bool intel_cc_platform_has(enum cc_attr attr) { return false; } > +#endif > + I assume this needs a rebase on -tip since cc_platform.c already has an empty version of this function (and it's static so it doesn't need to be declared in a header). > #endif /* __ASSEMBLY__ */ > > #endif /* __X86_MEM_ENCRYPT_H__ */ > diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile > index 159fccfece65..8e5b49be65bd 100644 > --- a/arch/x86/kernel/Makefile > +++ b/arch/x86/kernel/Makefile > @@ -28,6 +28,7 @@ KASAN_SANITIZE_dumpstack.o := n > KASAN_SANITIZE_dumpstack_$(BITS).o := n > KASAN_SANITIZE_stacktrace.o := n > KASAN_SANITIZE_paravirt.o := n > +KASAN_SANITIZE_cc_platform.o := n > KASAN_SANITIZE_sev.o := n > KASAN_SANITIZE_tdx.o := n This change is already in -tip as well. > + /** > + * @CC_ATTR_GUEST_TDX: Trusted Domain Extension Support > + * > + * The platform/OS is running as a TDX guest/virtual machine. > + * > + * Examples include Intel TDX. > + */ > + CC_ATTR_GUEST_TDX, Examples of TDX include TDX? :-) -- Josh