vl: Round argument of -m up to multiple of 8KiB

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 -m 0.8
    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 <armbru@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Markus Armbruster 2012-08-15 13:12:19 +02:00 committed by Blue Swirl
parent d83c951cce
commit ff96101552

7
vl.c
View File

@ -2735,6 +2735,7 @@ int main(int argc, char **argv, char **envp)
break;
case QEMU_OPTION_m: {
int64_t value;
uint64_t sz;
char *end;
value = strtosz(optarg, &end);
@ -2742,12 +2743,12 @@ 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) {
sz = QEMU_ALIGN_UP((uint64_t)value, 8192);
ram_size = sz;
if (ram_size != sz) {
fprintf(stderr, "qemu: ram size too large\n");
exit(1);
}
ram_size = value;
break;
}
case QEMU_OPTION_mempath: