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176 lines
6.6 KiB
176 lines
6.6 KiB
3 months ago
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From 8d6c37ddc253f63202cc9519670c258e9d81b98e Mon Sep 17 00:00:00 2001
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From: Paolo Bonzini <pbonzini@redhat.com>
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Date: Mon, 3 Jun 2024 14:25:06 +0200
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Subject: [PATCH 053/100] update-linux-headers: import linux/kvm_para.h header
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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
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RH-MergeRequest: 245: SEV-SNP support
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RH-Jira: RHEL-39544
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Bandan Das <bdas@redhat.com>
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RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
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RH-Commit: [53/91] 27d4db0ecec7d0b8adeba1ec85fca32eacee1009 (bonzini/rhel-qemu-kvm)
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Right now QEMU is importing arch/x86/include/uapi/asm/kvm_para.h
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because it includes definitions for kvmclock and for KVM CPUID
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bits. However, other definitions for KVM hypercall values and return
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codes are included in include/uapi/linux/kvm_para.h and they will be
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used by SEV-SNP.
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To ensure that it is possible to include both <linux/kvm_para.h> and
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"standard-headers/asm-x86/kvm_para.h" without conflicts, provide
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linux/kvm_para.h as a portable header too, and forward linux-headers/
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files to those in include/standard-headers. Note that <linux/kvm_para.h>
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will include architecture-specific definitions as well, but
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"standard-headers/linux/kvm_para.h" will not because it can be used in
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architecture-independent files.
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This could easily be extended to other architectures, but right now
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they do not need any symbol in their specific kvm_para.h files.
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Reviewed-by: Thomas Huth <thuth@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit aa274c33c39e7de981dc195abe60e1a246c9d248)
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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---
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include/standard-headers/linux/kvm_para.h | 38 +++++++++++++++++++++++
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linux-headers/asm-x86/kvm_para.h | 1 +
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linux-headers/linux/kvm_para.h | 2 ++
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scripts/update-linux-headers.sh | 22 ++++++++++++-
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4 files changed, 62 insertions(+), 1 deletion(-)
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create mode 100644 include/standard-headers/linux/kvm_para.h
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create mode 100644 linux-headers/asm-x86/kvm_para.h
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create mode 100644 linux-headers/linux/kvm_para.h
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diff --git a/include/standard-headers/linux/kvm_para.h b/include/standard-headers/linux/kvm_para.h
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new file mode 100644
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index 0000000000..015c166302
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--- /dev/null
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+++ b/include/standard-headers/linux/kvm_para.h
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@@ -0,0 +1,38 @@
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+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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+#ifndef __LINUX_KVM_PARA_H
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+#define __LINUX_KVM_PARA_H
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+
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+/*
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+ * This header file provides a method for making a hypercall to the host
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+ * Architectures should define:
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+ * - kvm_hypercall0, kvm_hypercall1...
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+ * - kvm_arch_para_features
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+ * - kvm_para_available
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+ */
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+
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+/* Return values for hypercalls */
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+#define KVM_ENOSYS 1000
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+#define KVM_EFAULT EFAULT
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+#define KVM_EINVAL EINVAL
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+#define KVM_E2BIG E2BIG
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+#define KVM_EPERM EPERM
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+#define KVM_EOPNOTSUPP 95
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+
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+#define KVM_HC_VAPIC_POLL_IRQ 1
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+#define KVM_HC_MMU_OP 2
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+#define KVM_HC_FEATURES 3
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+#define KVM_HC_PPC_MAP_MAGIC_PAGE 4
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+#define KVM_HC_KICK_CPU 5
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+#define KVM_HC_MIPS_GET_CLOCK_FREQ 6
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+#define KVM_HC_MIPS_EXIT_VM 7
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+#define KVM_HC_MIPS_CONSOLE_OUTPUT 8
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+#define KVM_HC_CLOCK_PAIRING 9
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+#define KVM_HC_SEND_IPI 10
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+#define KVM_HC_SCHED_YIELD 11
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+#define KVM_HC_MAP_GPA_RANGE 12
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+
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+/*
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+ * hypercalls use architecture specific
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+ */
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+
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+#endif /* __LINUX_KVM_PARA_H */
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diff --git a/linux-headers/asm-x86/kvm_para.h b/linux-headers/asm-x86/kvm_para.h
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new file mode 100644
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index 0000000000..1d3e0e0b07
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--- /dev/null
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+++ b/linux-headers/asm-x86/kvm_para.h
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@@ -0,0 +1 @@
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+#include "standard-headers/asm-x86/kvm_para.h"
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diff --git a/linux-headers/linux/kvm_para.h b/linux-headers/linux/kvm_para.h
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new file mode 100644
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index 0000000000..6a1e672259
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--- /dev/null
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+++ b/linux-headers/linux/kvm_para.h
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@@ -0,0 +1,2 @@
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+#include "standard-headers/linux/kvm_para.h"
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+#include <asm/kvm_para.h>
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diff --git a/scripts/update-linux-headers.sh b/scripts/update-linux-headers.sh
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index 90759dcfe0..64d1989961 100755
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--- a/scripts/update-linux-headers.sh
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+++ b/scripts/update-linux-headers.sh
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@@ -64,6 +64,7 @@ cp_portable() {
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-e 'linux/kernel' \
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-e 'linux/sysinfo' \
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-e 'asm/setup_data.h' \
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+ -e 'asm/kvm_para.h' \
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> /dev/null
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then
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echo "Unexpected #include in input file $f".
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@@ -71,6 +72,15 @@ cp_portable() {
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fi
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header=$(basename "$f");
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+
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+ if test -z "$arch"; then
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+ # Let users of include/standard-headers/linux/ headers pick the
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+ # asm-* header that they care about
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+ arch_cmd='/<asm\/\([^>]*\)>/d'
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+ else
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+ arch_cmd='s/<asm\/\([^>]*\)>/"standard-headers\/asm-'$arch'\/\1"/'
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+ fi
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+
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sed -e 's/__aligned_u64/__u64 __attribute__((aligned(8)))/g' \
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-e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \
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-e 's/u\([0-9][0-9]*\)/uint\1_t/g' \
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@@ -79,7 +89,7 @@ cp_portable() {
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-e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \
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-e 's/"\(input-event-codes\.h\)"/"standard-headers\/linux\/\1"/' \
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-e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \
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- -e 's/<asm\/\([^>]*\)>/"standard-headers\/asm-'$arch'\/\1"/' \
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+ -e "$arch_cmd" \
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-e 's/__bitwise//' \
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-e 's/__attribute__((packed))/QEMU_PACKED/' \
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-e 's/__inline__/inline/' \
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@@ -159,7 +169,12 @@ EOF
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cp "$hdrdir/include/asm/unistd_32.h" "$output/linux-headers/asm-x86/"
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cp "$hdrdir/include/asm/unistd_x32.h" "$output/linux-headers/asm-x86/"
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cp "$hdrdir/include/asm/unistd_64.h" "$output/linux-headers/asm-x86/"
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+
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cp_portable "$hdrdir/include/asm/kvm_para.h" "$output/include/standard-headers/asm-$arch"
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+ cat <<EOF >$output/linux-headers/asm-$arch/kvm_para.h
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+#include "standard-headers/asm-$arch/kvm_para.h"
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+EOF
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+
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# Remove everything except the macros from bootparam.h avoiding the
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# unnecessary import of several video/ist/etc headers
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sed -e '/__ASSEMBLY__/,/__ASSEMBLY__/d' \
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@@ -209,6 +224,10 @@ if [ -d "$linux/LICENSES" ]; then
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done
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fi
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+cat <<EOF >$output/linux-headers/linux/kvm_para.h
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+#include "standard-headers/linux/kvm_para.h"
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+#include <asm/kvm_para.h>
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+EOF
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cat <<EOF >$output/linux-headers/linux/virtio_config.h
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#include "standard-headers/linux/virtio_config.h"
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EOF
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@@ -231,6 +250,7 @@ for i in "$hdrdir"/include/linux/*virtio*.h \
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"$hdrdir/include/linux/ethtool.h" \
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"$hdrdir/include/linux/const.h" \
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"$hdrdir/include/linux/kernel.h" \
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+ "$hdrdir/include/linux/kvm_para.h" \
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"$hdrdir/include/linux/vhost_types.h" \
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"$hdrdir/include/linux/sysinfo.h"; do
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cp_portable "$i" "$output/include/standard-headers/linux"
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--
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2.39.3
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