buildsys: Remove support for 32-bit MIPS hosts

Stop detecting 32-bit MIPS host as supported, update the
deprecation document. See previous commit for rationale.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20251009195210.33161-8-philmd@linaro.org>

configure

@@ -404,8 +404,6 @@ elif check_define _ARCH_PPC ; then
 elif check_define __mips__ ; then
   if check_define __mips64 ; then
     cpu="mips64"
-  else
-    cpu="mips"
   fi
 elif check_define __s390__ ; then
   if check_define __s390x__ ; then
@@ -473,11 +471,6 @@ case "$cpu" in
     host_arch=mips
     linux_arch=mips
     ;;
-  mips*)
-    cpu=mips
-    host_arch=mips
-    linux_arch=mips
-    ;;
 
   ppc)
     host_arch=ppc

docs/about/deprecated.rst

@@ -172,17 +172,14 @@ This argument has always been ignored.
 Host Architectures
 ------------------
 
-Big endian MIPS since 7.2; 32-bit little endian MIPS since 9.2, MIPS since 11.0
-'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+MIPS (since 11.0)
+'''''''''''''''''
 
-As Debian 10 ("Buster") moved into LTS the big endian 32 bit version of
-MIPS moved out of support making it hard to maintain our
-cross-compilation CI tests of the architecture. As we no longer have
-CI coverage support may bitrot away before the deprecation process
+MIPS is not supported by Debian 13 ("Trixie") and newer, making it hard to
+maintain our cross-compilation CI tests of the architecture. As we no longer
+have CI coverage support may bitrot away before the deprecation process
 completes.
 
-Likewise, MIPS is not supported by Debian 13 ("Trixie") and newer.
-
 System emulation on 32-bit x86 hosts (since 8.0)
 ''''''''''''''''''''''''''''''''''''''''''''''''
 

docs/about/removed-features.rst

@@ -896,6 +896,12 @@ work around the atomicity issues in system mode by running all vCPUs
 in a single thread context; in user mode atomicity was simply broken.
 From 10.0, QEMU has disabled configuration of 64-bit guests on 32-bit hosts.
 
+32-bit MIPS (since 11.0)
+''''''''''''''''''''''''
+
+Debian 12 "Bookworm" removed support for 32-bit MIPS, making it hard to
+maintain our cross-compilation CI tests of the architecture.
+
 Guest Emulator ISAs
 -------------------