[v3] Unaligned access for user-only

[PATCH v3 51/66] hw/core/cpu: Add prctl-unalign-sigbus property for user-only

Richard Henderson posted 66 patches 2 years, 10 months ago

Diff against v2
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Maintainers: Alistair Francis <Alistair.Francis@wdc.com>, Eduardo Habkost <ehabkost@redhat.com>, Artyom Tarasenko <atar4qemu@gmail.com>, Peter Maydell <peter.maydell@linaro.org>, Richard Henderson <richard.henderson@linaro.org>, "Philippe Mathieu-Daudé" <f4bug@amsat.org>, Marek Vasut <marex@denx.de>, Alistair Francis <alistair.francis@wdc.com>, Greg Kurz <groug@kaod.org>, Michael Rolnik <mrolnik@gmail.com>, Stefan Weil <sw@weilnetz.de>, Yoshinori Sato <ysato@users.sourceforge.jp>, Mahmoud Mandour <ma.mandourr@gmail.com>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, Stafford Horne <shorne@gmail.com>, Alexandre Iooss <erdnaxe@crans.org>, David Hildenbrand <david@redhat.com>, David Gibson <david@gibson.dropbear.id.au>, Bastian Koppelmann <kbastian@mail.uni-paderborn.de>, Palmer Dabbelt <palmer@dabbelt.com>, Aurelien Jarno <aurelien@aurel32.net>, "Alex Bennée" <alex.bennee@linaro.org>, Chris Wulff <crwulff@gmail.com>, Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>, Riku Voipio <riku.voipio@iki.fi>, Laurent Vivier <laurent@vivier.eu>, Paolo Bonzini <pbonzini@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, Bin Meng <bin.meng@windriver.com>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Max Filippov <jcmvbkbc@gmail.com>, Thomas Huth <thuth@redhat.com>, Taylor Simpson <tsimpson@quicinc.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Cornelia Huck <cohuck@redhat.com>

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[PATCH v3 51/66] hw/core/cpu: Add prctl-unalign-sigbus property for user-only

Posted by Richard Henderson 2 years, 10 months ago

Actually disabled for now.  Will enable for each cpu that
supports the feature.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 hw/core/cpu-user.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/hw/core/cpu-user.c b/hw/core/cpu-user.c
index 62037e8669..23786865cb 100644
--- a/hw/core/cpu-user.c
+++ b/hw/core/cpu-user.c
@@ -11,12 +11,27 @@
 
 #include "qemu/osdep.h"
 #include "hw/core/cpu.h"
+#include "hw/qdev-properties.h"
 #include "cpu-common.h"
 
 /*
  * This can't go in hw/core/cpu-common.c because that file is compiled only
  * once for both user-mode and system builds.
  */
+static Property cpu_useronly_props[] = {
+    /*
+     * Create a memory property for softmmu CPU object, so users can wire
+     * up its memory. The default if no link is set up is to use the
+     * system address space.
+     */
+#if 0
+    DEFINE_PROP_BOOL("prctl-unalign-sigbus", CPUState,
+                     prctl_unalign_sigbus, false),
+#endif
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 void cpu_class_init_props(DeviceClass *dc)
 {
+    device_class_set_props(dc, cpu_useronly_props);
 }
-- 
2.25.1