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[Qemu-devel] [PATCH 1/2] vl: Round argument of -m up to multiple of 8KiB
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] [PATCH 1/2] vl: Round argument of -m up to multiple of 8KiB |
Date: |
Tue, 14 Aug 2012 13:58:54 +0200 |
Partial pages make little sense and don't work. Ensure the RAM size
is a multiple of any possible target's page size.
Fixes
$ qemu-system-x86_64 -nodefaults -S -vnc :0 -monitor stdio -m 0.8
QEMU 1.1.50 monitor - type 'help' for more information
(qemu) qemu-system-x86_64: /work/armbru/qemu/exec.c:2255: register_subpage:
Assertion `existing->mr->subpage || existing->mr == &io_mem_unassigned' failed
Signed-off-by: Markus Armbruster <address@hidden>
---
See also
http://lists.nongnu.org/archive/html/qemu-devel/2012-06/msg02813.html
vl.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/vl.c b/vl.c
index d01256a..b411d45 100644
--- a/vl.c
+++ b/vl.c
@@ -2708,11 +2708,13 @@ int main(int argc, char **argv, char **envp)
fprintf(stderr, "qemu: invalid ram size: %s\n", optarg);
exit(1);
}
-
if (value != (uint64_t)(ram_addr_t)value) {
fprintf(stderr, "qemu: ram size too large\n");
exit(1);
}
+ if (value & 0x1fff) {
+ value = (value + 0x1fff) & ~0x1fff;
+ }
ram_size = value;
break;
}
--
1.7.11.2