Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* rust: declare self as qemu_api for proc-macros
* rust/qemu-api-macros: make derive(Object) friendly when missing parent
* x86/loader: Don't update kernel header for CoCo VMs
* target/i386: Add support for save/load of exception error code
* i386/tcg/svm: fix incorrect canonicalization
* scripts/minikconf.py: small fixes

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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  rust: move dependencies to rust/Cargo.toml
  rust: declare self as qemu_api for proc-macros
  rust/qemu-api-macros: make derive(Object) friendly when missing parent
  subprojects: update proc-macro2 and syn
  rust: qemu-api-macros: support matching more than one error
  rust: disable borrow_as_ptr warning
  kvm/kvm-all: make kvm_park/unpark_vcpu local to kvm-all.c
  i386/tcg/svm: fix incorrect canonicalization
  x86/loader: Don't update kernel header for CoCo VMs
  MAINTAINERS: add a few more files to "Top Level Makefile and configure"
  python: mkvenv: fix messages printed by mkvenv
  scripts/minikconf.py: s/Error/KconfigParserError
  scripts/minikconf.py: fix invalid attribute access
  target/i386: Add support for save/load of exception error code

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

2 files changed, 18 insertions, 12 deletions

diff --git a/rust/qemu-api-macros/src/lib.rs b/rust/qemu-api-macros/src/lib.rs
index b525d89c09..959726efe6 100644
--- a/rust/qemu-api-macros/src/lib.rs
+++ b/rust/qemu-api-macros/src/lib.rs
@@ -85,7 +85,15 @@ fn derive_object_or_error(input: DeriveInput) -> Result<proc_macro2::TokenStream
     is_c_repr(&input, "#[derive(Object)]")?;
 
     let name = &input.ident;
-    let parent = &get_fields(&input, "#[derive(Object)]")?[0].ident;
+    let parent = &get_fields(&input, "#[derive(Object)]")?
+        .get(0)
+        .ok_or_else(|| {
+            Error::new(
+                input.ident.span(),
+                "#[derive(Object)] requires a parent field",
+            )
+        })?
+        .ident;
 
     Ok(quote! {
         ::qemu_api::assert_field_type!(#name, #parent,
@@ -115,23 +123,21 @@ fn derive_opaque_or_error(input: DeriveInput) -> Result<proc_macro2::TokenStream
     let field = &get_unnamed_field(&input, "#[derive(Wrapper)]")?;
     let typ = &field.ty;
 
-    // TODO: how to add "::qemu_api"?  For now, this is only used in the
-    // qemu_api crate so it's not a problem.
     Ok(quote! {
-        unsafe impl crate::cell::Wrapper for #name {
-            type Wrapped = <#typ as crate::cell::Wrapper>::Wrapped;
+        unsafe impl ::qemu_api::cell::Wrapper for #name {
+            type Wrapped = <#typ as ::qemu_api::cell::Wrapper>::Wrapped;
         }
         impl #name {
-            pub unsafe fn from_raw<'a>(ptr: *mut <Self as crate::cell::Wrapper>::Wrapped) -> &'a Self {
+            pub unsafe fn from_raw<'a>(ptr: *mut <Self as ::qemu_api::cell::Wrapper>::Wrapped) -> &'a Self {
                 let ptr = ::std::ptr::NonNull::new(ptr).unwrap().cast::<Self>();
                 unsafe { ptr.as_ref() }
             }
 
-            pub const fn as_mut_ptr(&self) -> *mut <Self as crate::cell::Wrapper>::Wrapped {
+            pub const fn as_mut_ptr(&self) -> *mut <Self as ::qemu_api::cell::Wrapper>::Wrapped {
                 self.0.as_mut_ptr()
             }
 
-            pub const fn as_ptr(&self) -> *const <Self as crate::cell::Wrapper>::Wrapped {
+            pub const fn as_ptr(&self) -> *const <Self as ::qemu_api::cell::Wrapper>::Wrapped {
                 self.0.as_ptr()
             }
 
@@ -139,7 +145,7 @@ fn derive_opaque_or_error(input: DeriveInput) -> Result<proc_macro2::TokenStream
                 self.0.as_void_ptr()
             }
 
-            pub const fn raw_get(slot: *mut Self) -> *mut <Self as crate::cell::Wrapper>::Wrapped {
+            pub const fn raw_get(slot: *mut Self) -> *mut <Self as ::qemu_api::cell::Wrapper>::Wrapped {
                 slot.cast()
             }
         }
diff --git a/rust/qemu-api-macros/src/tests.rs b/rust/qemu-api-macros/src/tests.rs
index d6dcd62fcf..6028cdbc4c 100644
--- a/rust/qemu-api-macros/src/tests.rs
+++ b/rust/qemu-api-macros/src/tests.rs
@@ -7,9 +7,9 @@ use quote::quote;
 use super::*;
 
 macro_rules! derive_compile_fail {
-    ($derive_fn:ident, $input:expr, $error_msg:expr) => {{
+    ($derive_fn:ident, $input:expr, $($error_msg:expr),+ $(,)?) => {{
         let input: proc_macro2::TokenStream = $input;
-        let error_msg: &str = $error_msg;
+        let error_msg = &[$( quote! { ::core::compile_error! { $error_msg } } ),*];
         let derive_fn: fn(input: syn::DeriveInput) -> Result<proc_macro2::TokenStream, syn::Error> =
             $derive_fn;
 
@@ -18,7 +18,7 @@ macro_rules! derive_compile_fail {
         let err = result.unwrap_err().into_compile_error();
         assert_eq!(
             err.to_string(),
-            quote! { ::core::compile_error! { #error_msg } }.to_string()
+            quote! { #(#error_msg)* }.to_string()
         );
     }};
 }