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author | Ryan Harper <ryanh@us.ibm.com> | 2010-02-23 09:13:14 -0600 |
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committer | Aurelien Jarno <aurelien@aurel32.net> | 2010-03-06 22:30:25 +0100 |
commit | b299b12b176792db8ff47c4d22fa62e4d64a0614 (patch) | |
tree | 0058be659b7c0ca79a5ff08896840bc44cf96ce4 /vl.c | |
parent | target-i386: Fix long jumps/calls in long mode with REX.W set (diff) | |
download | qemu-kvm-b299b12b176792db8ff47c4d22fa62e4d64a0614.tar.gz qemu-kvm-b299b12b176792db8ff47c4d22fa62e4d64a0614.tar.bz2 qemu-kvm-b299b12b176792db8ff47c4d22fa62e4d64a0614.zip |
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>
Diffstat (limited to 'vl.c')
-rw-r--r-- | vl.c | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -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()) { |