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[Qemu-devel] smp-parse: smp-opt-cores for simple -smp X
From: |
Adam Lackorzynski |
Subject: |
[Qemu-devel] smp-parse: smp-opt-cores for simple -smp X |
Date: |
Fri, 8 Jul 2011 21:59:50 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
Hi,
When just using a simple '-smp X', both the smp_cores and smp_threads
variables are set to 1, which on x86 leads to CPUid-0x80000008-ecx
returning 1 for the CPU count despite more CPUs are there. Docs say
'Missing values will be computed.', so my try on this is the following.
Comments?
Signed-off-by: Adam Lackorzynski <address@hidden>
---
vl.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/vl.c b/vl.c
index fcd7395..1459bde 100644
--- a/vl.c
+++ b/vl.c
@@ -886,6 +886,8 @@ static void smp_parse(const char *optarg)
max_cpus = strtoull(option, NULL, 10);
/* compute missing values, prefer sockets over cores over threads */
+ if (sockets + cores + threads == 0)
+ cores = smp;
if (smp == 0 || sockets == 0) {
sockets = sockets > 0 ? sockets : 1;
cores = cores > 0 ? cores : 1;
--
1.7.5.3
Adam
--
Adam address@hidden
Lackorzynski http://os.inf.tu-dresden.de/~adam/
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