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Re: [PULL 0/2] Libslirp patches
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From: |
Stefan Hajnoczi |
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Subject: |
Re: [PULL 0/2] Libslirp patches |
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Date: |
Mon, 5 Jul 2021 17:25:43 +0100 |
On Mon, Jul 05, 2021 at 12:31:01PM +0200, Philippe Mathieu-Daudé wrote:
> +Richard/Stefan for "atomic" error.
...
> > [2363/9207] Linking target qemu-system-aarch64
> > FAILED: qemu-system-aarch64
> > clang++ @qemu-system-aarch64.rsp
> > libqemu-aarch64-softmmu.fa.p/accel_tcg_cputlb.c.o: In function
> > `helper_atomic_cmpxchgq_le_mmu':
> > /tmp/tmp.VkWONZ62bA/build/../accel/tcg/atomic_template.h:86: undefined
> > reference to `__atomic_compare_exchange_8'
> > libqemu-aarch64-softmmu.fa.p/accel_tcg_cputlb.c.o: In function
> > `helper_atomic_xchgq_le_mmu':
> > /tmp/tmp.VkWONZ62bA/build/../accel/tcg/atomic_template.h:134: undefined
> > reference to `__atomic_exchange_8'
> > libqemu-aarch64-softmmu.fa.p/accel_tcg_cputlb.c.o: In function
> > `helper_atomic_fetch_addq_le_mmu':
According to docs/devel/atomics.rst:
These operations are polymorphic; they operate on any type that is as
wide as a pointer or smaller.
It looks like the compiler doesn't support 8-bit atomics here?
Stefan
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