Re: [Qemu-devel] [PATCH 07/14] exec.c: Add new address_space_ld*/st* functions

[Paolo Bonzini <pbonzini@redhat.com>]

On 07/04/2015 22:09, Peter Maydell wrote:
> +#ifdef NEED_CPU_H
> +uint32_t address_space_lduw(AddressSpace *as, hwaddr addr,
> +                            MemTxAttrs attrs, MemTxResult *result);
> +uint32_t address_space_ldl(AddressSpace *as, hwaddr addr,
> +                            MemTxAttrs attrs, MemTxResult *result);
> +uint64_t address_space_ldq(AddressSpace *as, hwaddr addr,
> +                            MemTxAttrs attrs, MemTxResult *result);
> +void address_space_stl_notdirty(AddressSpace *as, hwaddr addr, uint32_t val,
> +                            MemTxAttrs attrs, MemTxResult *result);
> +void address_space_stw(AddressSpace *as, hwaddr addr, uint32_t val,
> +                            MemTxAttrs attrs, MemTxResult *result);
> +void address_space_stl(AddressSpace *as, hwaddr addr, uint32_t val,
> +                            MemTxAttrs attrs, MemTxResult *result);
> +void address_space_stq(AddressSpace *as, hwaddr addr, uint64_t val,
> +                            MemTxAttrs attrs, MemTxResult *result);
> +#endif

I think we do not want to expose these at all (or at least, all users
should really be CPUs and hence use *_phys functions).

S390 is always big-endian, and watch_mem_read/write can use the same
buffer trick as subpages (and in fact should probably use memattrs as well).

So, please at least add a comment that these functions are deprecated,
and check if watch_mem_read/write should be handled like subpages.

Thanks,

Paolo