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Fix segfault with ram_size > 4095M without kvm 

Currently, x86_64-softmmu qemu segfaults when trying to use > 4095M memsize.
This patch adds a simple check and error message (much like the 2047 limit on
32-bit hosts) on ram_size in the control path after we determine we're
not using kvm

Upstream qemu-kvm is affected if using the -no-kvm option; this patch address
the segfault there as well.

Signed-off-by: Ryan Harper <ryanh@us.ibm.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Ryan Harper 2010-02-23 09:13:14 -06:00 committed by Aurelien Jarno
parent c248df6161
commit b299b12b17
1 changed files with 6 additions and 0 deletions
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6
vl.c
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@ -5792,6 +5792,12 @@ int main(int argc, char **argv, char **envp)
fprintf(stderr, "failed to initialize KVM\n");
exit(1);
}
} else {
/* without kvm enabled, we can only support 4095 MB RAM */
if (ram_size > (4095UL << 20)) {
fprintf(stderr, "qemu: without kvm support at most 4095 MB RAM can be simulated\n");
exit(1);
}
}
if (qemu_init_main_loop()) {