From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8324DC433EF for ; Thu, 17 Mar 2022 12:13:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233482AbiCQMOY (ORCPT ); Thu, 17 Mar 2022 08:14:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45132 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233484AbiCQMOT (ORCPT ); Thu, 17 Mar 2022 08:14:19 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 011C1488A1 for ; Thu, 17 Mar 2022 05:13:00 -0700 (PDT) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1647519179; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=+aJXXTOSuOP5ZNFbQV8cFNSaOsKhS7JI2YS1HU/H1jo=; b=q6kNCzu59lqLmeomrGIzVWtTQ7CX6sM+jRsxgWKz/im1fnAny564uO/ARLmEP88gng6bES ywF6zbonj/Mjh5euaRQnUt9mm5rb0IJhhchKflpA3RBt56bKCjZ3kAKvp2/T6Smy5Kq3C1 V7YyOWWANWeg90YrstP7l6yAzf3zwz8+yOr774mK3xDawUVbZq+9nZXbhQK446aRMLJ42M ovJxNIB7e46IR50GR/Oq4SPe84CiQSDH1qAfjFUzFA9SV3+I4FO16xFQ7Fh8b/Aqyv82DE ctP+zQD6blcIIaIvvTUnHWLHMQ/wRFBE47S6lPiZcVePPaV4jOi/o0ohMr+fEQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1647519179; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=+aJXXTOSuOP5ZNFbQV8cFNSaOsKhS7JI2YS1HU/H1jo=; b=gLkuJEkBV3A7ZpML/GxRh40M0Bukdmn7dVR98qpqWW7l3vGO18DViLAn1AIcE8kC86aaIy tjwBpek+N6XAiXBg== To: "Kirill A. Shutemov" , mingo@redhat.com, bp@alien8.de, dave.hansen@intel.com, luto@kernel.org, peterz@infradead.org Cc: sathyanarayanan.kuppuswamy@linux.intel.com, aarcange@redhat.com, ak@linux.intel.com, dan.j.williams@intel.com, david@redhat.com, hpa@zytor.com, jgross@suse.com, jmattson@google.com, joro@8bytes.org, jpoimboe@redhat.com, knsathya@kernel.org, pbonzini@redhat.com, sdeep@vmware.com, seanjc@google.com, tony.luck@intel.com, vkuznets@redhat.com, wanpengli@tencent.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, x86@kernel.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: Re: [PATCHv6 15/30] x86/boot: Port I/O: allow to hook up alternative helpers In-Reply-To: <20220316020856.24435-16-kirill.shutemov@linux.intel.com> References: <20220316020856.24435-1-kirill.shutemov@linux.intel.com> <20220316020856.24435-16-kirill.shutemov@linux.intel.com> Date: Thu, 17 Mar 2022 13:12:59 +0100 Message-ID: <87czik22wk.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Mar 16 2022 at 05:08, Kirill A. Shutemov wrote: > +#undef inb > +#undef inw > +#undef inl > +#undef outb > +#undef outw > +#undef outl > + > +struct port_io_ops { > + u8 (*inb)(u16 port); > + u16 (*inw)(u16 port); > + u32 (*inl)(u16 port); > + void (*outb)(u8 v, u16 port); > + void (*outw)(u16 v, u16 port); > + void (*outl)(u32 v, u16 port); u8 (*inb)(u16 port); void (*outb)(u8 v, u16 port); void (*outw)(u16 v, u16 port); is all what's used AFAICT. > +}; > + > +extern struct port_io_ops pio_ops; > + > +/* > + * Use the normal I/O instructions by default. > + * TDX guests override these to use hypercalls. > + */ > +static inline void init_default_io_ops(void) > +{ > + pio_ops.inb = __inb; > + pio_ops.inw = __inw; > + pio_ops.inl = __inl; > + pio_ops.outb = __outb; > + pio_ops.outw = __outw; > + pio_ops.outl = __outl; > +} #define DEFINE_PORT_IO_OPS() \ struct port_io_ops pio_ops = { \ .inb = __inb, \ .outb = __outb, \ .outw = __outw, } Hmm? Thanks, tglx