If the chip is a Core 2 Duo, yes. If the chip is a Core Duo (32-bit chip), no.
Syd Polk sp...@mozilla.com +1-512-905-9904 irc: sydpolk > On Aug 6, 2015, at 13:53, Kearwood Kip Gilbert <kgilb...@mozilla.com> wrote: > > 32-bit OSX kernels can indeed run 64-bit applications on 64-bit > hardware. It's not just running the 32-bit code in the fat binaries. > > - Kearwood "Kip" Gilbert > > On 2015-08-05 4:48 PM, Mike Hommey wrote: >> On Wed, Aug 05, 2015 at 04:34:20PM -0700, Matthew N. wrote: >>> On 2015-08-05 4:28 PM, Martin Thomson wrote: >>>> On Wed, Aug 5, 2015 at 3:59 PM, Matthew N. <ma...@mozilla.com> wrote: >>>>> If we have data on CPU architecture I don't think the OS version is >>>>> relevant unless I'm missing something. >>>> My understanding is that OS version is all that matters. 64-bit apps >>>> require a 64-bit OS. (Such an OS requires a 64-bit processor of >>>> course.) >>> All of our supported versions of OS X can run on 64-bit hardware[1] >>> though AFAICT. >>> >>> [1] "Platforms: IA-32, x86-64[2]" >>> https://en.wikipedia.org/wiki/Mac_OS_X_Snow_Leopard >> Snow Leopard boots with a 32-bits kernel on many types of machines. At >> the time it was released essentially only Xserves would boot the 64-bits >> kernel by default. One factor is whether the EFI firmware is 32 or 64 >> bits. >> >> Now, looking around, there are claims that 64-bits applications can run >> on the 32-bits kernel, but I'm dubious of that fact. It may well be that >> people /think/ they're running 64-bits applications, but like Firefox, >> they might just have been universal binaries and they were actually >> running the 32-bits part. It would be worth checking, though. >> >> Mike >> _______________________________________________ >> dev-platform mailing list >> dev-platform@lists.mozilla.org >> https://lists.mozilla.org/listinfo/dev-platform > > _______________________________________________ > dev-platform mailing list > dev-platform@lists.mozilla.org > https://lists.mozilla.org/listinfo/dev-platform _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
