buildsys: Remove support for MIPS hosts

MIPS host support is deprecated since commit 269ffaabc84
("buildsys: Remove support for 32-bit MIPS hosts"). Time
to remove.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20260511135312.38705-3-philmd@linaro.org>

diff --git a/configure b/configure
index b6dd797de5baa419bb24a5e7a2fb102e27530551..e138d83bc9f4e7a86516f8fa9e4e172f5c984c0d 100755 (executable)
--- a/configure
+++ b/configure
@@ -399,8 +399,6 @@ elif check_define _ARCH_PPC64 ; then
   else
     cpu="ppc64"
   fi
-elif check_define __mips64 ; then
-  cpu="mips64"
 elif check_define __s390__ ; then
   if check_define __s390x__ ; then
     cpu="s390x"
@@ -446,12 +444,6 @@ case "$cpu" in
     linux_arch=loongarch
     ;;
 
-  mips64*|mipsisa64*)
-    cpu=mips64
-    host_arch=mips64
-    linux_arch=mips
-    ;;
-
   ppc64)
     host_arch=ppc64
     linux_arch=powerpc
@@ -1244,11 +1236,6 @@ EOF
         rust_osvariant=${rust_osvariant}eabi
       fi
       ;;
-
-    mips64)
-      # e.g. mips64-unknown-linux-gnuabi64
-      rust_osvariant=${rust_osvariant}abi64
-      ;;
     esac
     ;;
 
@@ -1281,12 +1268,6 @@ EOF
     test "$rust_arch" = arm && test "$rust_os" != linux && rust_arch=armv7
     ;;
 
-  mips)
-    # preserve ISA version (mipsisa64r6 etc.) and include endianness
-    rust_arch=${raw_cpu%el}
-    test "$bigendian" = no && rust_arch=${rust_arch}el
-    ;;
-
   riscv64)
     # e.g. riscv64gc-unknown-linux-gnu, but riscv64-linux-android
     test "$android" = no && rust_arch=${rust_arch}gc

diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index e64328c5b2b2fde51b7f89a1646ec015a55896f1..95bf7613295c16b78217709dad9365b1c7f98773 100644 (file)
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -177,14 +177,6 @@ The ``info capture`` command is deprecated and will be removed in a future relea
 Host Architectures
 ------------------
 
-MIPS (since 10.2)
-'''''''''''''''''
-
-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.
-
 TCG Plugin support not enabled by default with TCI (since 9.2)
 ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
 

diff --git a/docs/about/removed-features.rst b/docs/about/removed-features.rst
index 1ee4ab07944c995f83a2ceb1211ad2eec4c679b1..2021e85f56ae09e5251d596ce4814a77afd24ebf 100644 (file)
--- a/docs/about/removed-features.rst
+++ b/docs/about/removed-features.rst
@@ -938,6 +938,12 @@ From 10.0, QEMU has disabled configuration of 64-bit guests on 32-bit hosts.
 Debian 12 "Bookworm" removed support for 32-bit MIPS, making it hard to
 maintain our cross-compilation CI tests of the architecture.
 
+64-bit MIPS (removed in 11.1)
+'''''''''''''''''''''''''''''
+
+Debian 13 "Trixie" removed support for MIPS, making it hard to maintain our
+cross-compilation CI tests of the architecture.
+
 32-bit PPC (removed in 10.2)
 ''''''''''''''''''''''''''''
 

diff --git a/include/qemu/timer.h b/include/qemu/timer.h
index b931181f53d1a489363f8fcecb9fa9693cf74df9..ec03635dd34c13c4e22646fa94e84c2ce53179d5 100644 (file)
--- a/include/qemu/timer.h
+++ b/include/qemu/timer.h
@@ -922,36 +922,6 @@ static inline int64_t cpu_get_host_ticks (void)
 #endif
 }
 
-#elif defined(__mips__) && \
-    ((defined(__mips_isa_rev) && __mips_isa_rev >= 2) || defined(__linux__))
-/*
- * binutils wants to use rdhwr only on mips32r2
- * but as linux kernel emulate it, it's fine
- * to use it.
- *
- */
-#define MIPS_RDHWR(rd, value) {                         \
-        __asm__ __volatile__ (".set   push\n\t"         \
-                              ".set mips32r2\n\t"       \
-                              "rdhwr  %0, "rd"\n\t"     \
-                              ".set   pop"              \
-                              : "=r" (value));          \
-    }
-
-static inline int64_t cpu_get_host_ticks(void)
-{
-    /* On kernels >= 2.6.25 rdhwr <reg>, $2 and $3 are emulated */
-    uint32_t count;
-    static uint32_t cyc_per_count = 0;
-
-    if (!cyc_per_count) {
-        MIPS_RDHWR("$3", cyc_per_count);
-    }
-
-    MIPS_RDHWR("$2", count);
-    return (int64_t)(count * cyc_per_count);
-}
-
 #elif defined(__alpha__)
 
 static inline int64_t cpu_get_host_ticks(void)

diff --git a/meson.build b/meson.build
index 70613bf4afc3d8b45b2722b8667bcfcf5342dedd..fe5211b212231da0c0d4a4310995edebadec562d 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -55,7 +55,7 @@ qapi_trace_events = []
 bsd_oses = ['gnu/kfreebsd', 'freebsd', 'netbsd', 'openbsd', 'dragonfly', 'darwin']
 supported_oses = ['windows', 'freebsd', 'netbsd', 'openbsd', 'darwin', 'sunos', 'linux', 'emscripten']
 supported_cpus = ['ppc64', 's390x', 'riscv64', 'x86_64',
-  'aarch64', 'loongarch64', 'mips64', 'sparc64', 'wasm64']
+  'aarch64', 'loongarch64', 'sparc64', 'wasm64']
 
 cpu = host_machine.cpu_family()
 
@@ -5013,14 +5013,6 @@ if host_arch == 'unknown'
     message('configure has succeeded and you can continue to build, but')
     message('QEMU will use a slow interpreter to emulate the target CPU.')
   endif
-elif host_arch == 'mips'
-  message()
-  warning('DEPRECATED HOST CPU')
-  message()
-  message('Support for CPU host architecture ' + cpu + ' is going to be')
-  message('dropped as soon as the QEMU project stops supporting Debian 12')
-  message('("Bookworm"). Going forward, the QEMU project will not guarantee')
-  message('that QEMU will compile or work on this host CPU.')
 endif
 
 if not supported_oses.contains(host_os)

diff --git a/util/cacheflush.c b/util/cacheflush.c
index c043c5f881a6d500b4fca9f272e8718efdab31f9..247c4ce298030f7b7c133f85e0d363bd0e86d1c8 100644 (file)
--- a/util/cacheflush.c
+++ b/util/cacheflush.c
@@ -301,22 +301,6 @@ void flush_idcache_range(uintptr_t rx, uintptr_t rw, size_t len)
 }
 #endif /* CONFIG_DARWIN */
 
-#elif defined(__mips__)
-
-#ifdef __OpenBSD__
-#include <machine/sysarch.h>
-#else
-#include <sys/cachectl.h>
-#endif
-
-void flush_idcache_range(uintptr_t rx, uintptr_t rw, size_t len)
-{
-    if (rx != rw) {
-        cacheflush((void *)rw, len, DCACHE);
-    }
-    cacheflush((void *)rx, len, ICACHE);
-}
-
 #elif defined(__powerpc__)
 
 void flush_idcache_range(uintptr_t rx, uintptr_t rw, size_t len)