Messages in this thread | | | From | David Howells <> | Subject | Re: [PATCH 10/10] Add sample notification program [ver #3] | Date | Thu, 06 Jun 2019 23:52:50 +0100 |
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Eugeniu Rosca <erosca@de.adit-jv.com> wrote:
> How about arm64? Do you intend to enable cross-compilation?
There's no guarantee that a cross-compiler can actually build userspace apps, though I haven't intended to encode anything against that in the Makefile.
> > + asm ("lfence" : : : "memory" ); > [..] > > + asm("mfence" ::: "memory"); > > FWIW, trying to cross-compile it returned: > > aarch64-linux-gnu-gcc -I../../usr/include -I../../include watch_test.c -o watch_test > /tmp/ccDXYynm.s: Assembler messages: > /tmp/ccDXYynm.s:471: Error: unknown mnemonic `lfence' -- `lfence' > /tmp/ccDXYynm.s:568: Error: unknown mnemonic `mfence' -- `mfence'
Yeah. I need to use C-standard __atomic_* stuff.
David
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