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| author | David Gibson <david@gibson.dropbear.id.au> | 2016-11-14 10:12:57 +0100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2016-11-15 10:08:43 +1100 |
| commit | 27d9ffd4b3718707c302fc0aad4746b958443c3a (patch) | |
| tree | 4792b34bd5b15c5c143741275e24cf21ef294688 /hw/ppc | |
| parent | f81e551229070f01bf747eda3f05960182db9d2a (diff) | |
| download | qemu-27d9ffd4b3718707c302fc0aad4746b958443c3a.zip qemu-27d9ffd4b3718707c302fc0aad4746b958443c3a.tar.gz qemu-27d9ffd4b3718707c302fc0aad4746b958443c3a.tar.bz2 | |
ppc/pnv: Fix fatal bug on 32-bit hosts
If the pnv machine type is compiled on a 32-bit host, the unsigned long
(host) type is 32-bit. This means that the hweight_long() used to
calculate the number of allowed cores only considers the low 32 bits of
the cores_mask variable, and can thus return 0 in some circumstances.
This corrects the bug.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Suggested-by: Richard Henderson <rth@twiddle.net>
[clg: replaced hweight_long() by ctpop64() ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw/ppc')
| -rw-r--r-- | hw/ppc/pnv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index e777958..9df7b25 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -620,7 +620,7 @@ static void pnv_chip_core_sanitize(PnvChip *chip, Error **errp) chip->cores_mask &= pcc->cores_mask; /* now that we have a sane layout, let check the number of cores */ - cores_max = hweight_long(chip->cores_mask); + cores_max = ctpop64(chip->cores_mask); if (chip->nr_cores > cores_max) { error_setg(errp, "warning: too many cores for chip ! Limit is %d", cores_max); |