[RFC PATCH 1/8] Add SEV Rust library as dependency with CONFIG_SEV

[Tyler Fanelli <tfanelli@redhat.com>]

The Rust sev library provides a type-safe implementation of the AMD
Secure Encrypted Virtualization (SEV) APIs.

Signed-off-by: Tyler Fanelli <tfanelli@redhat.com>
---
 meson.build                   | 7 +++++++
 meson_options.txt             | 2 ++
 scripts/meson-buildoptions.sh | 3 +++
 target/i386/meson.build       | 2 +-
 4 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/meson.build b/meson.build
index 5150a74831..7114a4a2b9 100644
--- a/meson.build
+++ b/meson.build
@@ -1079,6 +1079,12 @@ if targetos == 'linux' and (have_system or have_tools)
                        method: 'pkg-config',
                        required: get_option('libudev'))
 endif
+sev = not_found
+if not get_option('sev').auto()
+  sev = dependency('sev', version: '1.2.1',
+                      method: 'pkg-config',
+                      required: get_option('sev'))
+endif
 
 mpathlibs = [libudev]
 mpathpersist = not_found
@@ -4283,6 +4289,7 @@ summary_info += {'PAM':               pam}
 summary_info += {'iconv support':     iconv}
 summary_info += {'virgl support':     virgl}
 summary_info += {'blkio support':     blkio}
+summary_info += {'sev support':       sev}
 summary_info += {'curl support':      curl}
 summary_info += {'Multipath support': mpathpersist}
 summary_info += {'Linux AIO support': libaio}
diff --git a/meson_options.txt b/meson_options.txt
index f82d88b7c6..c57d542c0b 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -134,6 +134,8 @@ option('cap_ng', type : 'feature', value : 'auto',
        description: 'cap_ng support')
 option('blkio', type : 'feature', value : 'auto',
        description: 'libblkio block device driver')
+option('sev', type : 'feature', value : 'auto',
+        description: 'SEV Rust library')
 option('bpf', type : 'feature', value : 'auto',
         description: 'eBPF support')
 option('cocoa', type : 'feature', value : 'auto',
diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh
index e1d178370c..d7deb50bda 100644
--- a/scripts/meson-buildoptions.sh
+++ b/scripts/meson-buildoptions.sh
@@ -83,6 +83,7 @@ meson_options_help() {
   printf "%s\n" '  avx512bw        AVX512BW optimizations'
   printf "%s\n" '  avx512f         AVX512F optimizations'
   printf "%s\n" '  blkio           libblkio block device driver'
+  printf "%s\n" '  sev             SEV Rust library'
   printf "%s\n" '  bochs           bochs image format support'
   printf "%s\n" '  bpf             eBPF support'
   printf "%s\n" '  brlapi          brlapi character device driver'
@@ -227,6 +228,8 @@ _meson_option_parse() {
     --disable-lto) printf "%s" -Db_lto=false ;;
     --enable-blkio) printf "%s" -Dblkio=enabled ;;
     --disable-blkio) printf "%s" -Dblkio=disabled ;;
+    --enable-sev) printf "%s" -Dsev=enabled ;;
+    --disable-sev) printf "%s" -Dsev=disabled ;;
     --block-drv-ro-whitelist=*) quote_sh "-Dblock_drv_ro_whitelist=$2" ;;
     --block-drv-rw-whitelist=*) quote_sh "-Dblock_drv_rw_whitelist=$2" ;;
     --enable-block-drv-whitelist-in-tools) printf "%s" -Dblock_drv_whitelist_in_tools=true ;;
diff --git a/target/i386/meson.build b/target/i386/meson.build
index 6f1036d469..18450dc134 100644
--- a/target/i386/meson.build
+++ b/target/i386/meson.build
@@ -6,7 +6,7 @@ i386_ss.add(files(
   'xsave_helper.c',
   'cpu-dump.c',
 ))
-i386_ss.add(when: 'CONFIG_SEV', if_true: files('host-cpu.c'))
+i386_ss.add(when: 'CONFIG_SEV', if_true: [sev, files('host-cpu.c')])
 
 # x86 cpu type
 i386_ss.add(when: 'CONFIG_KVM', if_true: files('host-cpu.c'))
-- 
2.40.1