Re: [PATCH v2 10/16] monitor: Remove unnecessary 'block/block.h' header

["Philippe Mathieu-Daudé" <philmd@oss.qualcomm.com>]

On 2026-08-12 16:00, Marc-André Lureau wrote:
> Hi
> 
> On Wed, Aug 12, 2026 at 5:38 PM Philippe Mathieu-Daudé
> <philmd@oss.qualcomm.com> wrote:
>>
>> Nothing here requires declarations from "block/block.h".
>>
>> Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
> 
> breaks for me:
> [38/286] Compiling C object libsystem.a.p/net_vhost-vdpa.c.o
> FAILED: [code=1] libsystem.a.p/net_vhost-vdpa.c.o
> cc -m64 -Ilibsystem.a.p -I. -I.. -Isubprojects/libvduse
> -I../subprojects/libvduse -Iui -Iqapi -Itrace -Iui/shader
> -I/usr/include/p11-kit-1 -I/usr/include/libpng16
> -I/usr/include/pixman-1 -I/usr/include/spice-1 -I/usr/include/glib-2.0
> -I/usr/lib64/glib-2.0/include -I/usr/include/libmount
> -I/usr/include/blkid -I/usr/include/sysprof-6
> -I/usr/include/gio-unix-2.0 -I/usr/include/spice-server
> -I/usr/include/opus -I/usr/include/cacard -I/usr/include/nss3
> -I/usr/include/nspr4 -I/usr/include/PCSC -I/usr/include/gstreamer-1.0
> -I/usr/include/libdrm -I/usr/include/orc-0.4 -I/usr/include/slirp
> -I/usr/local/include -I/usr/include/libusb-1.0 -I/usr/include/SDL2
> -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0
> -I/usr/include/cloudproviders -I/usr/include/cairo
> -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/glycin-2
> -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0
> -I/usr/include/atk-1.0 -I/usr/lib64/pkgconfig/../../include/dbus-1.0
> -I/usr/lib64/pkgconfig/../../lib64/dbus-1.0/include
> -I/usr/include/fribidi -I/usr/include/libxml2 -I/usr/include/harfbuzz
> -I/usr/include/freetype2 -I/usr/include/vte-2.91 -I/usr/include/rav1e
> -I/usr/include/svt-av1 -I/usr/include/libvmaf -I/usr/include/webp
> -I/usr/include/virgl -I/usr/include/fuse3 -I/usr/include/pipewire-0.3
> -I/usr/include/spa-0.2 -fdiagnostics-color=auto -Wall -Winvalid-pch
> -Werror -std=gnu11 -O2 -g -mcx16 -msse2 -fno-link-libatomic
> -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
> -fno-strict-aliasing -fno-common -fwrapv -ftrivial-auto-var-init=zero
> -fzero-init-padding-bits=all -fzero-call-used-regs=used-gpr
> -fsanitize=address -fstack-protector-strong -fno-omit-frame-pointer
> -Wempty-body -Wendif-labels -Wexpansion-to-defined -Wformat-overflow=2
> -Wformat-security -Wformat-y2k -Wignored-qualifiers
> -Wimplicit-fallthrough=2 -Winit-self -Wmissing-format-attribute
> -Wmissing-prototypes -Wnested-externs -Wold-style-declaration
> -Wold-style-definition -Wredundant-decls -Wshadow=local
> -Wstrict-prototypes -Wtype-limits -Wundef -Wvla -Wwrite-strings
> -Wno-missing-include-dirs -Wno-psabi -Wno-shift-negative-value
> -isystem /home/elmarco/src/qemu.nmi/linux-headers -isystem
> linux-headers -iquote . -iquote /home/elmarco/src/qemu.nmi -iquote
> /home/elmarco/src/qemu.nmi/include -iquote
> /home/elmarco/src/qemu.nmi/host/include/x86_64 -iquote
> /home/elmarco/src/qemu.nmi/host/include/generic -iquote
> /home/elmarco/src/qemu.nmi/tcg/x86_64 -pthread -fPIE
> -fno-strict-aliasing -fno-strict-overflow -DHWY_SHARED_DEFINE
> -DAVIF_DLL -DEB_DLL -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=600
> -DNCURSES_WIDECHAR=1 -D_GNU_SOURCE=1 -D_REENTRANT
> -DSTRUCT_IOVEC_DEFINED -DWITH_GZFILEOP -DCONFIG_SOFTMMU
> -DCOMPILING_SYSTEM_VS_USER -MD -MQ libsystem.a.p/net_vhost-vdpa.c.o
> -MF libsystem.a.p/net_vhost-vdpa.c.o.d -o
> libsystem.a.p/net_vhost-vdpa.c.o -c ../net/vhost-vdpa.c
> ../net/vhost-vdpa.c: In function ‘vhost_vdpa_net_load_cmd’:
> ../net/vhost-vdpa.c:714:24: error: implicit declaration of function
> ‘iov_size’ [-Wimplicit-function-declaration]
>    714 |     size_t data_size = iov_size(data_sg, data_num), cmd_size;
>        |                        ^~~~~~~~
> ../net/vhost-vdpa.c:714:24: error: nested extern declaration of
> ‘iov_size’ [-Werror=nested-externs]
> ../net/vhost-vdpa.c:742:5: error: implicit declaration of function
> ‘iov_from_buf’ [-Wimplicit-function-declaration]
>    742 |     iov_from_buf(out_cursor, 1, 0, &ctrl, sizeof(ctrl));
>        |     ^~~~~~~~~~~~
> ../net/vhost-vdpa.c:742:5: error: nested extern declaration of
> ‘iov_from_buf’ [-Werror=nested-externs]
> ../net/vhost-vdpa.c:744:5: error: implicit declaration of function
> ‘iov_to_buf’ [-Wimplicit-function-declaration]
>    744 |     iov_to_buf(data_sg, data_num, 0,
>        |     ^~~~~~~~~~
> ../net/vhost-vdpa.c:744:5: error: nested extern declaration of
> ‘iov_to_buf’ [-Werror=nested-externs]
> ../net/vhost-vdpa.c:748:5: error: implicit declaration of function
> ‘iov_copy’; did you mean ‘error_copy’?
> [-Wimplicit-function-declaration]
>    748 |     iov_copy(&out, 1, out_cursor, 1, 0, cmd_size);
>        |     ^~~~~~~~
>        |     error_copy
> ../net/vhost-vdpa.c:748:5: error: nested extern declaration of
> ‘iov_copy’ [-Werror=nested-externs]
> ../net/vhost-vdpa.c:760:5: error: implicit declaration of function
> ‘iov_discard_front’ [-Wimplicit-function-declaration]
>    760 |     iov_discard_front(&out_cursor, &dummy_cursor_iov_cnt, cmd_size);
>        |     ^~~~~~~~~~~~~~~~~
> ../net/vhost-vdpa.c:760:5: error: nested extern declaration of
> ‘iov_discard_front’ [-Werror=nested-externs]
> cc1: all warnings being treated as errors
> [55/286] Compiling C object libsystem.a.p/system_physmem.c.o
> ninja: build stopped: subcommand failed.
TIL monitor_fd_param().

Anyway thanks, consider the following as "PATCH 9.5/16":
-- >8 --
Author: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
Date:   Wed Aug 12 18:03:10 2026 +0200

     net/vhost-vdpa: Include missing 'qemu/iov.h' header

     vhost-vdpa.c uses methods declared in the "qemu/iov." header.
     Include it otherwise we get when refactoring unrelated headers:

       ../net/vhost-vdpa.c: In function ‘vhost_vdpa_net_load_cmd’:
       ../net/vhost-vdpa.c:714:24: error: implicit declaration of 
function ‘iov_size’
         714 |     size_t data_size = iov_size(data_sg, data_num), cmd_size;
             |                        ^~~~~~~~
       ../net/vhost-vdpa.c:714:24: error: nested extern declaration of 
‘iov_size’
       ../net/vhost-vdpa.c:742:5: error: implicit declaration of 
function ‘iov_from_buf’
         742 |     iov_from_buf(out_cursor, 1, 0, &ctrl, sizeof(ctrl));
             |     ^~~~~~~~~~~~
       ../net/vhost-vdpa.c:742:5: error: nested extern declaration of 
‘iov_from_buf’
       ../net/vhost-vdpa.c:744:5: error: implicit declaration of 
function ‘iov_to_buf’
         744 |     iov_to_buf(data_sg, data_num, 0,
             |     ^~~~~~~~~~
       ../net/vhost-vdpa.c:744:5: error: nested extern declaration of 
‘iov_to_buf’
       ../net/vhost-vdpa.c:748:5: error: implicit declaration of 
function ‘iov_copy’
         748 |     iov_copy(&out, 1, out_cursor, 1, 0, cmd_size);
             |     ^~~~~~~~

     Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>

diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index c526c2b2dc..1052361a4a 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -17,6 +17,7 @@
  #include "hw/virtio/vhost-vdpa.h"
  #include "qemu/config-file.h"
  #include "qemu/error-report.h"
+#include "qemu/iov.h"
  #include "qemu/log.h"
  #include "qemu/memalign.h"
  #include "qemu/option.h"
---