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[Qemu-devel] Fragile MAX_OP_PER_INSTR
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] Fragile MAX_OP_PER_INSTR |
Date: |
Tue, 22 Apr 2008 12:19:06 +0200 |
User-agent: |
Thunderbird 2.0.0.12 (X11/20080226) |
Hi,
we ran into a weird SEGFAULT of QEMU which turned out to be a corruption
of tcg_ctx due to writing beyond gen_opc_buf. The reason for this was a
too small MAX_OP_PER_INSTR, given a particular toolchain (here the one
of SLES 10 for x86-32). So far it runs fine with
#define MAX_OP_PER_INSTR 64
Does anyone have an idea how to resolve the related comment in exec-all.h?
/* XXX: make safe guess about sizes */
Or should we just increase the safety margin?
Jan
--
Siemens AG, Corporate Technology, CT SE 2
Corporate Competence Center Embedded Linux
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