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60 commits

Author SHA1 Message Date
Lioncash 72c8e4d264
exec: move functions to translate-all.h
Remove them from the sundry exec-all.h header, since they are only used by
the TCG runtime in exec.c and user-exec.c.

Backports commit 1652b974766401743879d78f796f44b8929b0787 from qemu
2018-02-13 09:01:45 -05:00
Peter Maydell 933e3bd8d1
Add MemTxAttrs to the IOTLB
Add a MemTxAttrs field to the IOTLB, and allow target-specific
code to set it via a new tlb_set_page_with_attrs() function;
pass the attributes through to the device when making IO accesses.

Backports commit fadc1cbe85c6b032d5842ec0d19d209f50fcb375 from qemu
2018-02-12 18:38:38 -05:00
Peter Maydell 825e74410f
memory: Replace io_mem_read/write with memory_region_dispatch_read/write
Rather than retaining io_mem_read/write as simple wrappers around
the memory_region_dispatch_read/write functions, make the latter
public and change all the callers to use them, since we need to
touch all the callsites anyway to add MemTxAttrs and MemTxResult
support. Delete io_mem_read and io_mem_write entirely.

(All the callers currently pass MEMTXATTRS_UNSPECIFIED
and convert the return value back to bool or ignore it.)

Backports commit 3b6434953934e6d4a776ed426d8c6d6badee176f from qemu
2018-02-12 17:26:52 -05:00
Paolo Bonzini a46accd252
exec: make iotlb RCU-friendly
After the previous patch, TLBs will be flushed on every change to
the memory mapping. This patch augments that with synchronization
of the MemoryRegionSections referred to in the iotlb array.

With this change, it is guaranteed that iotlb_to_region will access
the correct memory map, even once the TLB will be accessed outside
the BQL.

Backports commit 9d82b5a792236db31a75b9db5c93af69ac07c7c5 from qemu
2018-02-12 15:20:39 -05:00
Paolo Bonzini 3fbda890df
exec: introduce cpu_reload_memory_map
This for now is a simple TLB flush. This can change later for two
reasons:

1) an AddressSpaceDispatch will be cached in the CPUState object

2) it will not be possible to do tlb_flush once the TCG-generated code
runs outside the BQL.

Backports commit 76e5c76f2e2e0d20bab2cd5c7a87452f711654fb from qemu
2018-02-12 15:09:49 -05:00
xorstream 770c5616e2 Automated leading tab to spaces conversion. 2017-01-21 12:28:22 +11:00
xorstream b0ae2138fb Merge remote-tracking branch 'unicorn-engine/master' into msvc_native 2017-01-20 22:37:51 +11:00
Nguyen Anh Quynh 42771848d6 no more spinlock 2017-01-20 14:57:33 +08:00
xorstream 1aeaf5c40d This code should now build the x86_x64-softmmu part 2. 2017-01-19 22:50:28 +11:00
Nguyen Anh Quynh 344d016104 import 2015-08-21 15:04:50 +08:00