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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2024-10-30 00:17:47 +0100 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2024-11-05 10:36:08 +0000 |
| commit | c107521e0ee9ea1744f674a79d02d3d5ea2ba98c (patch) | |
| tree | af3793e5dc52a2d96aeb3fc1143146cc173e7ef1 /scripts | |
| parent | 6e9dcfb906f734b1e5b44d4ca2fac0a87bbac777 (diff) | |
| download | qemu-c107521e0ee9ea1744f674a79d02d3d5ea2ba98c.zip qemu-c107521e0ee9ea1744f674a79d02d3d5ea2ba98c.tar.gz qemu-c107521e0ee9ea1744f674a79d02d3d5ea2ba98c.tar.bz2 | |
linux-user: Allow custom rt signal mappings
Some applications want to use low priority realtime signals (e.g.,
SIGRTMAX). Currently QEMU cannot map all target realtime signals to
host realtime signals, and chooses to sacrifice the end of the target
realtime signal range.
Allow users to choose how to map target realtime signals to host
realtime signals using the new -t option, the new QEMU_RTSIG_MAP
environment variable, and the new -Drtsig_map=\"...\" meson flag.
To simplify things, the meson flag is not per-target, because the
intended use case is app-specific qemu-user builds.
The mapping is specified using the "tsig hsig count[,...]" syntax.
Target realtime signals [tsig,tsig+count) are mapped to host realtime
signals [hsig,hsig+count). Care is taken to avoid double and
out-of-range mappings.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20241029232211.206766-2-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/meson-buildoptions.sh | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh index 6f2bb08..51ed46e 100644 --- a/scripts/meson-buildoptions.sh +++ b/scripts/meson-buildoptions.sh @@ -72,6 +72,7 @@ meson_options_help() { printf "%s\n" ' "manufacturer" name for qemu-ga registry entries' printf "%s\n" ' [QEMU]' printf "%s\n" ' --qemu-ga-version=VALUE version number for qemu-ga installer' + printf "%s\n" ' --rtsig-map=VALUE default value of QEMU_RTSIG_MAP [NULL]' printf "%s\n" ' --smbd=VALUE Path to smbd for slirp networking' printf "%s\n" ' --sysconfdir=VALUE Sysconf data directory [etc]' printf "%s\n" ' --tls-priority=VALUE Default TLS protocol/cipher priority string' @@ -460,6 +461,7 @@ _meson_option_parse() { --disable-replication) printf "%s" -Dreplication=disabled ;; --enable-rng-none) printf "%s" -Drng_none=true ;; --disable-rng-none) printf "%s" -Drng_none=false ;; + --rtsig-map=*) quote_sh "-Drtsig_map=$2" ;; --enable-rust) printf "%s" -Drust=enabled ;; --disable-rust) printf "%s" -Drust=disabled ;; --enable-rutabaga-gfx) printf "%s" -Drutabaga_gfx=enabled ;; |