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authorMatthew Ogilvie <mmogilvi_qemu@miniinfo.net>2012-08-23 00:24:43 -0600
committermalc <av1474@comtv.ru>2012-08-24 07:44:39 +0400
commitf278d4947fff814dcde2ef2acad36d172ff8be35 (patch)
treec483f5871bb83294728a3b3026206c56ad7485a9 /sysemu.h
parent482f7bf86b43af9f6903c52726fedf82b28bf953 (diff)
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i8259: add -no-spurious-interrupt-hack option
This patch provides a way to optionally suppress spurious interrupts, as a workaround for systems described below: Some old operating systems do not handle spurious interrupts well, and qemu tends to generate them significantly more often than real hardware. Examples: - Microport UNIX System V/386 v 2.1 (ca 1987) (The main problem I'm fixing: Without this patch, it panics sporadically when accessing the hard disk.) - AT&T UNIX System V/386 Release 4.0 Version 2.1a (ca 1991) See screenshot in "QEMU Official OS Support List": http://www.claunia.com/qemu/objectManager.php?sClass=application&iId=9 (I don't have this system to test.) - A report about OS/2 boot lockup from 2004 by Hampa Hug: http://lists.nongnu.org/archive/html/qemu-devel/2004-09/msg00367.html (My patch was partially inspired by his.) Also: http://lists.nongnu.org/archive/html/qemu-devel/2005-06/msg00243.html (I don't have this system to test.) Signed-off-by: Matthew Ogilvie <mmogilvi_qemu@miniinfo.net> Signed-off-by: malc <av1474@comtv.ru>
Diffstat (limited to 'sysemu.h')
-rw-r--r--sysemu.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/sysemu.h b/sysemu.h
index 65552ac..0170109 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -117,6 +117,7 @@ extern int graphic_depth;
extern DisplayType display_type;
extern const char *keyboard_layout;
extern int win2k_install_hack;
+extern int no_spurious_interrupt_hack;
extern int alt_grab;
extern int ctrl_grab;
extern int usb_enabled;