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Re: [Qemu-devel] [PATCH 06/14] exec.c: Make address_space_rw take transa
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH 06/14] exec.c: Make address_space_rw take transaction attributes |
Date: |
Thu, 9 Apr 2015 11:43:53 +0100 |
On 9 April 2015 at 11:21, Paolo Bonzini <address@hidden> wrote:
>
>
> On 09/04/2015 12:14, Peter Maydell wrote:
>> On 9 April 2015 at 10:59, Edgar E. Iglesias <address@hidden> wrote:
>>> > On Tue, Apr 07, 2015 at 09:09:52PM +0100, Peter Maydell wrote:
>>>> >> Make address_space_rw take transaction attributes, rather
>>>> >> than always using the 'unspecified' attributes.
>>> >
>>> > Reviewed-by: Edgar E. Iglesias <address@hidden>
>>> >
>>> > I guess that we eventually will need to convert the dma_
>>> > functions?
>> Probably, though I'm not clear what they bring to the party
>> that the basic address_space_* functions don't (part of why
>> I left them alone).
>
> At this point, some memory barriers, basically.
So what distinguishes a device that needs the memory barriers
and does its accesses via dma_* from a device that doesn't and
uses address_space_* or ld/st*_phys ? (Or for that matter a
non-device that does memory accesses...)
thanks
-- PMM
- Re: [Qemu-devel] [PATCH 10/14] target-arm: Honour NS bits in page tables, (continued)
[Qemu-devel] [PATCH 04/14] Add MemTxAttrs to the IOTLB, Peter Maydell, 2015/04/07
[Qemu-devel] [PATCH 06/14] exec.c: Make address_space_rw take transaction attributes, Peter Maydell, 2015/04/07
[Qemu-devel] [PATCH 02/14] memory: Add MemTxAttrs, MemTxResult to io_mem_read and io_mem_write, Peter Maydell, 2015/04/07
Re: [Qemu-devel] [PATCH 02/14] memory: Add MemTxAttrs, MemTxResult to io_mem_read and io_mem_write, Edgar E. Iglesias, 2015/04/09
[Qemu-devel] [PATCH 13/14] target-arm: Use attribute info to handle user-only watchpoints, Peter Maydell, 2015/04/07
[Qemu-devel] [PATCH 09/14] exec.c: Capture the memory attributes for a watchpoint hit, Peter Maydell, 2015/04/07