Commit Graph

249 Commits

Author SHA1 Message Date
Paolo Bonzini
6886867e98 exec: fix migration with devices that use address_space_rw
Devices that use address_space_rw to write large areas to memory
(as opposed to address_space_map/unmap) were broken with respect
to migration since fe680d0 (exec: Limit translation limiting in
address_space_translate to xen, 2014-05-07).  Such devices include
IDE CD-ROMs.

The reason is that invalidate_and_set_dirty (called by address_space_rw
but not address_space_map/unmap) was only setting the dirty bit for
the first page in the translation.

To fix this, introduce cpu_physical_memory_set_dirty_range_nocode that
is the same as cpu_physical_memory_set_dirty_range except it does not
muck with the DIRTY_MEMORY_CODE bitmap.  This function can be used if
the caller invalidates translations with tb_invalidate_phys_page_range.

There is another difference between cpu_physical_memory_set_dirty_range
and cpu_physical_memory_set_dirty_flag; the former includes a call
to xen_modified_memory.  This is handled separately in
invalidate_and_set_dirty, and is not needed in other callers of
cpu_physical_memory_set_dirty_range_nocode, so leave it alone.

Just one nit: now that invalidate_and_set_dirty takes care of handling
multiple pages, there is no need for address_space_unmap to wrap it
in a loop.  In fact that loop would now be O(n^2).

Reported-by: Dave Gilbert <dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-07-22 10:38:50 +02:00
Peter Crosthwaite
d33382da9a memory: MemoryRegion: Add may-overlap and priority props
QOM propertyify the .may-overlap and .priority fields. The setters
will re-add the memory as a subregion if needed (i.e. the values change
when the memory region is already contained).

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
[Remove setters. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-07-01 10:20:41 +02:00
Paolo Bonzini
22a893e4f5 memory: MemoryRegion: replace owner field with QOM parent
The two are now the same.

Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-07-01 10:20:41 +02:00
Peter Crosthwaite
b4fefef9d5 memory: MemoryRegion: QOMify
QOMify memory regions as an Object. The former init() and destroy()
routines become instance_init() and instance_finalize() resp.

memory_region_init() is re-implemented to be:
object_initialize() + set fields

memory_region_destroy() is re-implemented to call unparent().

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
[Add newly-created MR as child, unparent on destruction. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-07-01 10:20:41 +02:00
Damjan Marion
3fd74b8407 vhost-user: fix regions provied with VHOST_USER_SET_MEM_TABLE message
Old code was affected by memory gaps which resulted in buffer pointers
pointing to address outside of the mapped regions.

Here we are introducing following changes:
 - new function qemu_get_ram_block_host_ptr() returns host pointer
   to the ram block, it is needed to calculate offset of specific
   region in the host memory
 - new field mmap_offset is added to the VhostUserMemoryRegion. It
   contains offset where specific region starts in the mapped memory.
   As there is stil no wider adoption of vhost-user agreement was made
   that we will not bump version number due to this change
 - other fileds in VhostUserMemoryRegion struct are not changed, as
   they are all needed for usermode app implementation
 - region data is not taken from ram_list.blocks anymore, instead we
   use region data which is alredy calculated for use in vhost-net
 - Now multiple regions can have same FD and user applicaton can call
   mmap() multiple times with the same FD but with different offset
   (user needs to take care for offset page alignment)

Signed-off-by: Damjan Marion <damarion@cisco.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Damjan Marion <damarion@cisco.com>
2014-06-29 19:39:40 +03:00
Richard Henderson
9171478c95 tcg-ppc: Use uintptr_t in ppc_tb_set_jmp_target
Tested-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-06-23 07:29:30 -07:00
Paolo Bonzini
dbcb898118 hostmem: add property to map memory with MAP_SHARED
A new "share" property can be used with the "memory-file" backend to
map memory with MAP_SHARED instead of MAP_PRIVATE.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:20 +03:00
Paolo Bonzini
a35ba7be4b hostmem: allow preallocation of any memory region
And allow preallocation of file-based memory even without -mem-prealloc.
Some care is necessary because -mem-prealloc does not allow disabling
preallocation for hostmem-file.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:20 +03:00
Paolo Bonzini
7f56e740a6 memory: add error propagation to file-based RAM allocation
Right now, -mem-path will fall back to RAM-based allocation in some
cases.  This should never happen with "-object memory-file", prepare
the code by adding correct error propagation.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

MST: drop \n at end of error messages
2014-06-19 18:44:20 +03:00
Paolo Bonzini
0b183fc871 memory: move mem_path handling to memory_region_allocate_system_memory
Like the previous patch did in exec.c, split memory_region_init_ram and
memory_region_init_ram_from_file, and push mem_path one step further up.
Other RAM regions than system memory will now be backed by regular RAM.

Also, boards that do not use memory_region_allocate_system_memory will
not support -mem-path anymore.  This can be changed before the patches
are merged by migrating boards to use the function.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:19 +03:00
Paolo Bonzini
7bd4f430a3 memory: move RAM_PREALLOC_MASK to exec.c, rename
Prepare for adding more flags.  The "_MASK" suffix is unique, kill it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:19 +03:00
Paolo Bonzini
e1c57ab86f memory: reorganize file-based allocation
Split the internal interface in exec.c to a separate function, and
push the check on mem_path up to memory_region_init_ram.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:19 +03:00
Wanlong Gao
96d0e26c23 NUMA: move numa related code to new file numa.c
Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>

MST: comment tweaks
2014-06-19 18:44:18 +03:00
Igor Mammedov
eed2bacfd2 memory: add memory_region_is_mapped() API
which allows to check if MemoryRegion is already mapped.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 16:41:47 +03:00
Paolo Bonzini
feca4ac18b memory: MemoryRegion: rename parent to container
Avoid confusion with the QOM parent.

Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-18 15:32:50 +02:00
Hu Tao
20cfe8810d exec: introduce qemu_ram_unset_idstr() to unset RAMBlock idstr
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-17 16:07:37 +02:00
Natanael Copa
7224f66ec3 exec: replace ffsl with ctzl
See commit fbeadf50 (bitops: unify bitops_ffsl with the one in
host-utils.h, call it bitops_ctzl) on why ctzl should be used instead
of ffsl.

This is also needed for musl libc which does not implement ffsl.

Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-11 00:25:06 +01:00
Paolo Bonzini
c773828aa9 softmmu: move all load/store functions to cpu_ldst.h
Unify pieces of cpu-all.h, exec-all.h, softmmu_exec.h and tcg/tcg.h
into a single new header file with all helpers.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-05 16:10:33 +02:00
Paolo Bonzini
f08b617018 softmmu: introduce cpu_ldst.h
This will collect all load and store helpers soon.  For now
it is just a replacement for softmmu_exec.h, which this patch
stops including directly, but we also include it where this will
be necessary in order to simplify the next patch.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-05 16:10:33 +02:00
Paolo Bonzini
58ed270df9 softmmu: move softmmu_template.h out of include/
It is only included in cputlb.c now.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-05 16:10:33 +02:00
Paolo Bonzini
0f590e749f softmmu: commonize helper definitions
They do not need to be in op_helper.c.  Because cputlb.c now includes
softmmu_template.h twice for each size, io_readX must be elided the
second time through.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-05 16:10:33 +02:00
Paolo Bonzini
93e22326d6 softmmu: make do_unaligned_access a method of CPU
We will reference it from more files in the next patch.  To avoid
ruining the small steps we're making towards multi-target, make
it a method of CPU rather than just a global.

Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-05 16:10:31 +02:00
Paolo Bonzini
ca0aa40816 softmmu: move definition of CPU_MMU_INDEX to inclusion site, drop ACCESS_TYPE
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-05 16:05:52 +02:00
Paolo Bonzini
a6c9eac0d5 softmmu: move MMUSUFFIX under SOFTMMU_CODE_ACCESS
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-05 16:05:47 +02:00
Paolo Bonzini
859d76120b softmmu: start introducing SOFTMMU_CODE_ACCESS in softmmu_header.h
This preprocessor symbol is already used in softmmu_template.h.  We
will use it to distinguish the two "fake" ACCESS_TYPEs
NB_MMU_MODES and NB_MMU_MODES + 1.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-05 16:05:27 +02:00
Richard Henderson
011209e19f tcg: Move size effects out of dh_arg
Tidying the initialization of the args arrays at the same time.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-28 09:33:55 -07:00
Richard Henderson
bbb8a1b455 tcg: Remove sizemask and flags arguments to tcg_gen_callN
Take them from the TCGHelperInfo struct instead.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-28 09:33:55 -07:00
Richard Henderson
afb49896fa tcg: Save flags and computed sizemask in TCGHelperInfo
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-28 09:33:54 -07:00
Richard Henderson
a5ed2de10a tcg: Move side effects out of dh_sizemask
Moving them into dh_arg instead.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-28 09:33:54 -07:00
Richard Henderson
836d6ed96e tcg: Inline tcg_gen_helperN
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-28 09:33:54 -07:00
Richard Henderson
944eea962b tcg: Push tcg-runtime routines into exec/helper-*
Rather than special casing them, use the standard mechanisms
for tcg helper generation.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-28 09:33:54 -07:00
Richard Henderson
2ef6175aa7 tcg: Invert the inclusion of helper.h
Rather than include helper.h with N values of GEN_HELPER, include a
secondary file that sets up the macros to include helper.h.  This
minimizes the files that must be rebuilt when changing the macros
for file N.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-28 09:33:54 -07:00
Richard Henderson
b6bfeea92a tcg-mips: Enable direct chaining of TBs
Now that the code_gen_buffer is constrained to not cross 256mb
regions, we are assured that we can use J to reach another TB.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-24 08:48:37 -07:00
Peter Maydell
1a381811b4 tcg/s390 updates
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Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-s390-20140515' into staging

tcg/s390 updates

# gpg: Signature made Thu 15 May 2014 17:24:40 BST using RSA key ID 4DD0279B
# gpg: Can't check signature: public key not found

* remotes/rth/tags/pull-tcg-s390-20140515:
  tcg-s390: Implement direct chaining of TBs
  tcg-s390: Don't force -march=z990
  tcg-s390: Improve setcond
  tcg-s390: Allow immediate operands to add2 and sub2
  tcg-s390: Implement tcg_register_jit
  tcg-s390: Use more risbg in the tlb sequence
  tcg-s390: Move ldst helpers out of line
  tcg-s390: Convert to new ldst opcodes
  tcg-s390: Integrate endianness into TCGMemOp
  tcg-s390: Convert to TCGMemOp
  tcg-s390: Fix off-by-one in wraparound andi

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-15 18:56:08 +01:00
Richard Henderson
a10c64e0df tcg-s390: Implement direct chaining of TBs
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-15 09:22:32 -07:00
Peter Maydell
ef3cb5ca82 Merge remote-tracking branch 'remotes/kvm/uq/master' into staging
* remotes/kvm/uq/master:
  pc: port 92 reset requires a low->high transition
  cpu: make CPU_INTERRUPT_RESET available on all targets
  apic: do not accept SIPI on the bootstrap processor
  target-i386: preserve FPU and MSR state on INIT
  target-i386: fix set of registers zeroed on reset
  kvm: forward INIT signals coming from the chipset
  kvm: reset state from the CPU's reset method
  target-i386: the x86 CPL is stored in CS.selector - auto update hflags accordingly.
  target-i386: set eflags prior to calling cpu_x86_load_seg_cache() in seg_helper.c
  target-i386: set eflags and cr0 prior to calling cpu_x86_load_seg_cache() in smm_helper.c
  target-i386: set eflags prior to calling svm_load_seg_cache() in svm_helper.c
  pci-assign: limit # of msix vectors
  pci-assign: Fix a bug when map MSI-X table memory failed
  kvm: make one_reg helpers available for everyone
  target-i386: Remove unused data from local array

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-15 15:38:40 +01:00
Richard Henderson
cb3d83bc49 exec-all.h: Use stl_le_p instead of stl_p patching x86
We got the wrong version of stl_p, the one that bswaps as appropriate
for the target.  Since x86 is always little-endian, the "_le_" routine
will resolve to what we want.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-13 10:16:07 -07:00
Paolo Bonzini
4a92a558f4 cpu: make CPU_INTERRUPT_RESET available on all targets
On the x86, some devices need access to the CPU reset pin (INIT#).
Provide a generic service to do this, using one of the internal
cpu_interrupt targets.  Generalize the PPC-specific code for
CPU_INTERRUPT_RESET to other targets.

Since PPC does not support migration across QEMU versions (its
machine types are not versioned yet), I picked the value that
is used on x86, CPU_INTERRUPT_TGT_INT_1.  Consequently, TGT_INT_2
and TGT_INT_3 are shifted down by one while keeping their value.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-13 13:21:51 +02:00
Richard Henderson
1813e1758d tcg: Define tcg_insn_unit for code pointers
To be defined by the tcg backend based on the elemental unit of the ISA.
During the transition, allow TCG_TARGET_INSN_UNIT_SIZE to be undefined,
which allows us to default tcg_insn_unit to the current uint8_t.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-12 10:03:04 -07:00
Peter Maydell
86360ad71d exec-all.h: Use stl_p to avoid undefined behaviour patching x86 jumps
The code which patches x86 jump instructions assumes it can do an
unaligned write of a uint32_t. This is actually safe on x86, but it's
still undefined behaviour. We have infrastructure for doing efficient
unaligned accesses which doesn't engage in undefined behaviour, so
use it.

This is technically fractionally less efficient, at least with gcc 4.6;
instead of one instruction:
 7b2:   89 3e                   mov    %edi,(%rsi)
we get an extra spurious store to the stack slot:
 7b2:   89 7c 24 64             mov    %edi,0x64(%rsp)
 7b6:   89 3e                   mov    %edi,(%rsi)

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-12 10:03:04 -07:00
Fam Zheng
edc1ba7a7a docs/memory.txt: Fix document on MMIO operations
.impl.valid should be .impl.unaligned and the description needs some
fixes.

.old_portio is removed since commit b40acf99b (ioport: Switch
dispatching to memory core layer).

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-05-07 21:00:44 +04:00
Richard Henderson
71b926992e tcg: Fix missed pointer size != TCG_TARGET_REG_BITS changes
Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-04-28 11:06:34 -07:00
Peter Maydell
aca3f40b37 target-arm: A64: Implement DC ZVA
Implement the DC ZVA instruction, which clears a block of memory.
The fast path obtains a pointer to the underlying RAM via the TCG TLB
data structure so we can do a direct memset(), with fallback to a
simple byte-store loop in the slow path.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-17 21:34:04 +01:00
Peter Maydell
14dcdac82f exec-all.h: Increase MAX_OP_PER_INSTR for ARM A64 decoder
The ARM A64 decoder's worst case number of TCG ops per instruction
is 266 (for insn 0x4c800000, a post-indexed ST4 multiple-structures
store). Raise the MAX_OP_PER_INSTR define accordingly.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-id: 1394822294-14837-17-git-send-email-peter.maydell@linaro.org
2014-03-17 16:31:51 +00:00
Andreas Färber
0c591eb0a9 cputlb: Change tlb_set_page() argument to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:52:47 +01:00
Andreas Färber
00c8cb0a36 cputlb: Change tlb_flush() argument to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:52:47 +01:00
Andreas Färber
31b030d4ab cputlb: Change tlb_flush_page() argument to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:52:47 +01:00
Andreas Färber
a47dddd734 exec: Change cpu_abort() argument to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:52:28 +01:00
Andreas Färber
bb0e627a84 exec: Change memory_region_section_get_iotlb() argument to CPUState
It no longer needs CPUArchState since moving watchpoints to CPUState.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:48 +01:00
Andreas Färber
baea4fae7b cputlb: Change tlb_unprotect_code_phys() argument to CPUState
Note that the argument is unused.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:48 +01:00