Messages in this thread | | | Date | Sat, 30 May 2009 01:40:07 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 0/4] amd64_edac: misc fixes |
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On Sat, 30 May 2009 10:19:54 +0200 Borislav Petkov <petkovbb@googlemail.com> wrote:
> Also, I've been thinking about how the old(er) > toolchain problem can be addressed and one fairly doable thing would be > if I'd query the gas version in the kernel Makefile and define popcnt > dependent on it and for older assemblers simply slap in the opcode and > fixate the operands in an inline assembly so that it works.
We've done that before. BUG() is one case (for other reasons), I think.
But if we have the code in there which uese the literal opcode, there's no need to query gas or to add the conditional.
Is popcnt supported on all CPUs?
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