From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f202.google.com (mail-pl1-f202.google.com [209.85.214.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3CCD6EA6 for ; Sat, 16 Sep 2023 00:31:59 +0000 (UTC) Received: by mail-pl1-f202.google.com with SMTP id d9443c01a7336-1bf6e47b5efso25507825ad.2 for ; Fri, 15 Sep 2023 17:31:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1694824318; x=1695429118; darn=lists.linux.dev; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=I1k7UlFLK1e3KB496SGnrZE1fwTPdTtkvkYnZUVfXtU=; b=Xqmna6J9N6WkXwHforOyOGco7kHycuxs4A9CfRaL7MeOaJoihY6XEJ1A78y8CG0LzR JwvJw0AEw1k1tBpuOF7hoWJ2TtqiizHQ0PIyOjnS+G+nxHaGMNLzidI3SHYwmU80Ap7l qrHsnbx/VD9Fc+0REf+nr4UJGRfe/j1rPQdiU2qSB1wA6/2SyQUTR+l1ANTbX3phbcbk CHpcsAk4Qd+uifiCOa10rCmUliRmsf2xTK7Pox6OhQoiAz4//KYR/7Rhy3HAiQwSi6Pg tCjFoaFnpjt8RxyPkJ2c9pBmkn+LCdIlBrV/Zxcer7JRQEbvWnqUOCPSyzJW/u5nlGvi jBIA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1694824318; x=1695429118; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=I1k7UlFLK1e3KB496SGnrZE1fwTPdTtkvkYnZUVfXtU=; b=OUCrD6S4COO5jgBM8NLnfKRzQzblRCY5XbGYRoLisnNUpSAJK59H2hNqcwz1fFu5AT 38oAOEx20XWBYck7LqHe0H4TvXl2d2Sv6eBUP8SyUPGjOkeAqwpORQADxJzP3CBx+MvM YF0mhDMS1zr+G1srMmp0Fen8BxbR3N3FDXzQ9rbVcIX+EdRuYzezjAQ7125DX+//1JLT ULu835f31mlRH2DFz/+9/WXqENEtwLqSptxl2//5+kA7SZNzC8tOn12ntuP4f8uG1Z6Q kcOs2s3mQqy+w7iYzIhJ7P8OLo12Kc8DQdEq2GQxDNPq3J60w9I9EqnXRvI4W+0uN67M uIGg== X-Gm-Message-State: AOJu0YxMTZ334MRJOBxaRYVopJFDj+B0cn7o4XkYMk4dHovXj0tEZcWr dtDCaeHaQP+2LZBWOIDTm1+bIQpo6+A= X-Google-Smtp-Source: AGHT+IFCF5MUMD869yhPhgA85k1sz5CoJq/QTd908FyvX67dvIc3xBcuRDs8mX3N7g5mT6MCs9yGRfwK12c= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:902:ec8b:b0:1bf:cc5:7b53 with SMTP id x11-20020a170902ec8b00b001bf0cc57b53mr68748plg.1.1694824318653; Fri, 15 Sep 2023 17:31:58 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 15 Sep 2023 17:31:11 -0700 In-Reply-To: <20230916003118.2540661-1-seanjc@google.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20230916003118.2540661-1-seanjc@google.com> X-Mailer: git-send-email 2.42.0.459.ge4e396fd5e-goog Message-ID: <20230916003118.2540661-20-seanjc@google.com> Subject: [PATCH 19/26] KVM: Standardize include paths across all architectures From: Sean Christopherson To: Catalin Marinas , Will Deacon , Marc Zyngier , Oliver Upton , Huacai Chen , Michael Ellerman , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, Peter Zijlstra , Arnaldo Carvalho de Melo , Sean Christopherson , Paolo Bonzini , Tony Krowiak , Halil Pasic , Jason Herne , Harald Freudenberger , Alex Williamson , Andy Lutomirski Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-mips@vger.kernel.org, kvm@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Anish Ghulati , Venkatesh Srinivas , Andrew Thornton Content-Type: text/plain; charset="UTF-8" Standardize KVM's include paths across all architectures by declaring the KVM-specific includes in the common Makefile.kvm. Having common KVM "own" the included paths reduces the temptation to unnecessarily add virt/kvm to arch include paths, and conversely if allowing arch code to grab headers from virt/kvm becomes desirable, virt/kvm can be added to all architecture's include path with a single line update. Having the common KVM makefile append to ccflags also provides a convenient location to append other things, e.g. KVM-specific #defines. Note, this changes the behavior of s390 and PPC, as s390 and PPC previously overwrote ccflags-y instead of adding on. There is no evidence that overwriting ccflags-y was necessary or even deliberate, as both s390 and PPC switched to the overwrite behavior without so much as a passing mention when EXTRA_CFLAGS was replaced with ccflags-y (commit c73028a02887 ("s390: change to new flag variable") and commit 4108d9ba9091 ("powerpc/Makefiles: Change to new flag variables")). Signed-off-by: Sean Christopherson --- arch/arm64/kvm/Makefile | 2 -- arch/mips/kvm/Makefile | 2 -- arch/powerpc/kvm/Makefile | 2 -- arch/riscv/kvm/Makefile | 2 -- arch/s390/kvm/Makefile | 2 -- arch/x86/kvm/Makefile | 1 - virt/kvm/Makefile.kvm | 2 ++ 7 files changed, 2 insertions(+), 11 deletions(-) diff --git a/arch/arm64/kvm/Makefile b/arch/arm64/kvm/Makefile index c0c050e53157..3996489baeef 100644 --- a/arch/arm64/kvm/Makefile +++ b/arch/arm64/kvm/Makefile @@ -3,8 +3,6 @@ # Makefile for Kernel-based Virtual Machine module # -ccflags-y += -I $(srctree)/$(src) - include $(srctree)/virt/kvm/Makefile.kvm obj-$(CONFIG_KVM) += kvm.o diff --git a/arch/mips/kvm/Makefile b/arch/mips/kvm/Makefile index 96a7cd21b140..d198e1addea7 100644 --- a/arch/mips/kvm/Makefile +++ b/arch/mips/kvm/Makefile @@ -4,8 +4,6 @@ include $(srctree)/virt/kvm/Makefile.kvm -ccflags-y += -Iarch/mips/kvm - kvm-$(CONFIG_CPU_HAS_MSA) += msa.o kvm-y += mips.o emulate.o entry.o \ diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile index 08a0e53d58c7..d6c6678ddf65 100644 --- a/arch/powerpc/kvm/Makefile +++ b/arch/powerpc/kvm/Makefile @@ -3,8 +3,6 @@ # Makefile for Kernel-based Virtual Machine module # -ccflags-y := -Iarch/powerpc/kvm - include $(srctree)/virt/kvm/Makefile.kvm common-objs-y += powerpc.o emulate_loadstore.o diff --git a/arch/riscv/kvm/Makefile b/arch/riscv/kvm/Makefile index 4c2067fc59fc..ff7d5f67e229 100644 --- a/arch/riscv/kvm/Makefile +++ b/arch/riscv/kvm/Makefile @@ -3,8 +3,6 @@ # Makefile for RISC-V KVM support # -ccflags-y += -I $(srctree)/$(src) - include $(srctree)/virt/kvm/Makefile.kvm obj-$(CONFIG_KVM) += kvm.o diff --git a/arch/s390/kvm/Makefile b/arch/s390/kvm/Makefile index f17249ab2a72..f8153189e003 100644 --- a/arch/s390/kvm/Makefile +++ b/arch/s390/kvm/Makefile @@ -5,8 +5,6 @@ include $(srctree)/virt/kvm/Makefile.kvm -ccflags-y := -Iarch/s390/kvm - kvm-y += kvm-s390.o intercept.o interrupt.o priv.o sigp.o kvm-y += diag.o gaccess.o guestdbg.o vsie.o pv.o diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile index 80e3fe184d17..d13f1a7b7b3d 100644 --- a/arch/x86/kvm/Makefile +++ b/arch/x86/kvm/Makefile @@ -1,6 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -ccflags-y += -I $(srctree)/arch/x86/kvm ccflags-$(CONFIG_KVM_WERROR) += -Werror ifeq ($(CONFIG_FRAME_POINTER),y) diff --git a/virt/kvm/Makefile.kvm b/virt/kvm/Makefile.kvm index 29373b59d89a..e85079ad245d 100644 --- a/virt/kvm/Makefile.kvm +++ b/virt/kvm/Makefile.kvm @@ -3,6 +3,8 @@ # Makefile for Kernel-based Virtual Machine module # +ccflags-y += -I$(srctree)/$(src) + KVM ?= ../../../virt/kvm kvm-y := $(KVM)/kvm_main.o $(KVM)/eventfd.o $(KVM)/binary_stats.o -- 2.42.0.459.ge4e396fd5e-goog