kumquat-buildroot/package/qemu/0001-user-exec-fix-usage-of-mcontext-structure-on-ARM-uCl.patch
Romain Naour b5351d8b7f package/qemu: bump to version 5.2.0
From [1]:
"The build system is now partly based on Meson. However, building is
still done with configure and make as in previous versions of QEMU."

Qemu requires meson >= 0.55.3, Buildroot use the latest version 0.56.0.
In order to add host-meson dependency we have to remove --python option
since it requires to use the meson bundled into Qemu sources [2].

Even without --python, python3 is used. See config-host.mak:
PYTHON=output/host/bin/python3 -B

See config-host.mak to check if meson and ninja from HOST_DIR are used:
MESON=output/host/bin/meson
NINJA=output/host/bin/ninja

Since the switch to meson is partial and still requires using the
configure script, keep using generic-package infra.

Disable new options introduced in Qemu 5.2.0:
--disable-virtiofsd
--disable-vhost-user-blk-server

Runtime tested on gitlab [3]

[1] https://wiki.qemu.org/ChangeLog/5.2#Build_Information
[2] https://git.qemu.org/?p=qemu.git;a=blob;f=configure;h=18c26e0389741643748c70ac7788a996ef006834;hb=553032db17440f8de011390e5a1cfddd13751b0b#l1895
[3] https://gitlab.com/kubu93/buildroot/-/pipelines/228214205

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-12-13 10:36:41 +01:00

36 lines
1.3 KiB
Diff

From 923d25365fbdff17fa4c8c2883960be07c3dad56 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Fri, 5 May 2017 09:07:15 +0200
Subject: [PATCH] user-exec: fix usage of mcontext structure on ARM/uClibc
user-exec.c has some conditional code to decide how to use the
mcontext structure. Unfortunately, since uClibc defines __GLIBC__, but
with old versions of __GLIBC__ and __GLIBC_MINOR__, an old code path
gets used, which doesn't apply to uClibc.
Fix this by excluding __UCLIBC__, which ensures we fall back to the
general case of using uc_mcontext.arm_pc, which works fine with
uClibc.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
accel/tcg/user-exec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 4ebe25461a..0496674fbd 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -536,7 +536,7 @@ int cpu_signal_handler(int host_signum, void *pinfo,
#if defined(__NetBSD__)
pc = uc->uc_mcontext.__gregs[_REG_R15];
-#elif defined(__GLIBC__) && (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3))
+#elif defined(__GLIBC__) && !defined(__UCLIBC__) && (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3))
pc = uc->uc_mcontext.gregs[R15];
#else
pc = uc->uc_mcontext.arm_pc;
--
2.25.3