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Mon, 03 Jun 2024 06:11:56 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGLkjYtdrxqgKd/MdJGvlIQxm30fXy+bSIuDybsGqCFgGfPUnG4wqgotyeFM6KqlIRI+xVN5Q== X-Received: by 2002:a17:907:6d1d:b0:a68:c721:1c7a with SMTP id a640c23a62f3a-a68c7212bc9mr456248366b.22.1717420315446; Mon, 03 Jun 2024 06:11:55 -0700 (PDT) Received: from avogadro.local ([151.81.115.112]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a68e007620csm288532066b.91.2024.06.03.06.11.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Jun 2024 06:11:54 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: thuth@redhat.com, cohuck@redhat.com Subject: [PATCH 4/4] update-linux-headers: import linux/kvm_para.h header Date: Mon, 3 Jun 2024 15:11:41 +0200 Message-ID: <20240603131141.834241-5-pbonzini@redhat.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240603131141.834241-1-pbonzini@redhat.com> References: <20240603131141.834241-1-pbonzini@redhat.com> MIME-Version: 1.0 Received-SPF: pass client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Right now QEMU is importing arch/x86/include/uapi/asm/kvm_para.h because it includes definitions for kvmclock and for KVM CPUID bits. However, other definitions for KVM hypercall values and return codes are included in include/uapi/linux/kvm_para.h and they will be used by SEV-SNP. To ensure that it is possible to include both and "standard-headers/asm-x86/kvm_para.h" without conflicts, include linux/kvm_para.h as a portable header too, and forward linux-headers/ files to those in include/standard-headers. Note that will include architecture-specific definitions as well, but "standard-headers/linux/kvm_para.h" will not because it can be used in architecture-independent files. This could easily be extended to other architectures, but right now they do not need any symbol in their specific kvm_para.h files. Signed-off-by: Paolo Bonzini Reviewed-by: Thomas Huth --- include/standard-headers/linux/kvm_para.h | 38 +++++++++++++++++++++++ linux-headers/asm-x86/kvm_para.h | 1 + linux-headers/linux/kvm_para.h | 2 ++ scripts/update-linux-headers.sh | 22 ++++++++++++- 4 files changed, 62 insertions(+), 1 deletion(-) create mode 100644 include/standard-headers/linux/kvm_para.h create mode 100644 linux-headers/asm-x86/kvm_para.h create mode 100644 linux-headers/linux/kvm_para.h diff --git a/include/standard-headers/linux/kvm_para.h b/include/standard-headers/linux/kvm_para.h new file mode 100644 index 00000000000..015c1663021 --- /dev/null +++ b/include/standard-headers/linux/kvm_para.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef __LINUX_KVM_PARA_H +#define __LINUX_KVM_PARA_H + +/* + * This header file provides a method for making a hypercall to the host + * Architectures should define: + * - kvm_hypercall0, kvm_hypercall1... + * - kvm_arch_para_features + * - kvm_para_available + */ + +/* Return values for hypercalls */ +#define KVM_ENOSYS 1000 +#define KVM_EFAULT EFAULT +#define KVM_EINVAL EINVAL +#define KVM_E2BIG E2BIG +#define KVM_EPERM EPERM +#define KVM_EOPNOTSUPP 95 + +#define KVM_HC_VAPIC_POLL_IRQ 1 +#define KVM_HC_MMU_OP 2 +#define KVM_HC_FEATURES 3 +#define KVM_HC_PPC_MAP_MAGIC_PAGE 4 +#define KVM_HC_KICK_CPU 5 +#define KVM_HC_MIPS_GET_CLOCK_FREQ 6 +#define KVM_HC_MIPS_EXIT_VM 7 +#define KVM_HC_MIPS_CONSOLE_OUTPUT 8 +#define KVM_HC_CLOCK_PAIRING 9 +#define KVM_HC_SEND_IPI 10 +#define KVM_HC_SCHED_YIELD 11 +#define KVM_HC_MAP_GPA_RANGE 12 + +/* + * hypercalls use architecture specific + */ + +#endif /* __LINUX_KVM_PARA_H */ diff --git a/linux-headers/asm-x86/kvm_para.h b/linux-headers/asm-x86/kvm_para.h new file mode 100644 index 00000000000..1d3e0e0b07a --- /dev/null +++ b/linux-headers/asm-x86/kvm_para.h @@ -0,0 +1 @@ +#include "standard-headers/asm-x86/kvm_para.h" diff --git a/linux-headers/linux/kvm_para.h b/linux-headers/linux/kvm_para.h new file mode 100644 index 00000000000..6a1e672259c --- /dev/null +++ b/linux-headers/linux/kvm_para.h @@ -0,0 +1,2 @@ +#include "standard-headers/linux/kvm_para.h" +#include diff --git a/scripts/update-linux-headers.sh b/scripts/update-linux-headers.sh index 7b39cc426e0..e579c348959 100755 --- a/scripts/update-linux-headers.sh +++ b/scripts/update-linux-headers.sh @@ -63,6 +63,7 @@ cp_portable() { -e 'linux/kernel' \ -e 'linux/sysinfo' \ -e 'asm/setup_data.h' \ + -e 'asm/kvm_para.h' \ > /dev/null then echo "Unexpected #include in input file $f". @@ -70,6 +71,15 @@ cp_portable() { fi header=$(basename "$f"); + + if test -z "$arch"; then + # Let users of include/standard-headers/linux/ headers pick the + # asm-* header that they care about + arch_cmd='/]*\)>/d' + else + arch_cmd='s/]*\)>/"standard-headers\/asm-'$arch'\/\1"/' + fi + sed -e 's/__aligned_u64/__u64 __attribute__((aligned(8)))/g' \ -e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \ -e 's/u\([0-9][0-9]*\)/uint\1_t/g' \ @@ -78,7 +88,7 @@ cp_portable() { -e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \ -e 's/"\(input-event-codes\.h\)"/"standard-headers\/linux\/\1"/' \ -e 's/]*\)>/"standard-headers\/linux\/\1"/' \ - -e 's/]*\)>/"standard-headers\/asm-'$arch'\/\1"/' \ + -e "$arch_cmd" \ -e 's/__bitwise//' \ -e 's/__attribute__((packed))/QEMU_PACKED/' \ -e 's/__inline__/inline/' \ @@ -158,7 +168,12 @@ EOF cp "$hdrdir/include/asm/unistd_32.h" "$output/linux-headers/asm-x86/" cp "$hdrdir/include/asm/unistd_x32.h" "$output/linux-headers/asm-x86/" cp "$hdrdir/include/asm/unistd_64.h" "$output/linux-headers/asm-x86/" + cp_portable "$hdrdir/include/asm/kvm_para.h" "$output/include/standard-headers/asm-$arch" + cat <$output/linux-headers/asm-$arch/kvm_para.h +#include "standard-headers/asm-$arch/kvm_para.h" +EOF + # Remove everything except the macros from bootparam.h avoiding the # unnecessary import of several video/ist/etc headers sed -e '/__ASSEMBLY__/,/__ASSEMBLY__/d' \ @@ -208,6 +223,10 @@ if [ -d "$linux/LICENSES" ]; then done fi +cat <$output/linux-headers/linux/kvm_para.h +#include "standard-headers/linux/kvm_para.h" +#include +EOF cat <$output/linux-headers/linux/virtio_config.h #include "standard-headers/linux/virtio_config.h" EOF @@ -230,6 +249,7 @@ for i in "$hdrdir"/include/linux/*virtio*.h \ "$hdrdir/include/linux/ethtool.h" \ "$hdrdir/include/linux/const.h" \ "$hdrdir/include/linux/kernel.h" \ + "$hdrdir/include/linux/kvm_para.h" \ "$hdrdir/include/linux/vhost_types.h" \ "$hdrdir/include/linux/sysinfo.h"; do cp_portable "$i" "$output/include/standard-headers/linux"