Commit graph

273 commits

Author SHA1 Message Date
Eric Blake eeffd97458
qapi: Make all visitors supply uint64 callbacks
Our qapi visitor contract supports multiple integer visitors,
but left the type_uint64 visitor as optional (falling back on
type_int64); which in turn can lead to awkward behavior with
numbers larger than INT64_MAX (the user has to be aware of
twos complement, and deal with negatives).

This patch does not address the disparity in handling large
values as negatives. It merely moves the fallback from uint64
to int64 from the visitor core to the visitors, where the issue
can actually be fixed, by implementing the missing type_uint64()
callbacks on top of the respective type_int64() callbacks, and
with a FIXME comment explaining why that's wrong.

With that done, we now have a type_uint64() callback in every
driver, so we can make it mandatory from the core. And although
the type_int64() callback can cover the entire valid range of
type_uint{8,16,32} on valid user input, using type_uint64() to
avoid mixed signedness makes more sense.

Backports commit f755dea79dc81b0d6a8f6414e0672e165e28d8ba from qemu
2018-02-19 11:59:22 -05:00
Eric Blake 5b5299bdee
qapi: Prefer type_int64 over type_int in visitors
The qapi builtin type 'int' is basically shorthand for the type
'int64'. In fact, since no visitor was providing the optional
type_int64() callback, visit_type_int64() was just always falling
back to type_int(), cementing the equivalence between the types.

However, some visitors are providing a type_uint64() callback.
For purposes of code consistency, it is nicer if all visitors
use the paired type_int64/type_uint64 names rather than the
mismatched type_int/type_uint64. So this patch just renames
the signed int callbacks in place, dropping the type_int()
callback as redundant, and a later patch will focus on the
unsigned int callbacks.

Add some FIXMEs to questionable reuse of errp in code touched
by the rename, while at it (the reuse works as long as the
callbacks don't modify value when setting an error, but it's not
a good example to set) - a later patch will then fix those.

No change in functionality here, although further cleanups are
in the pipeline.

Backports commit 4c40314a35816de635e7170eaacdc0c35be83a8a from qemu
2018-02-19 11:53:21 -05:00
Peter Maydell c8220d5aaf
fpu: Replace uint8 typedef with uint8_t
Replace the uint8 softfloat-specific typedef with uint8_t.
This change was made with

find include hw fpu target-* -name '*.[ch]' | xargs sed -i -e 's/\buint8\b/uint8_t/g'

together with manual removal of the typedef definition and
manual fixing of more erroneous uses found via test compilation.

It turns out that the only code using this type is an accidental
use where uint8_t was intended anyway...

Backports commit d341d9f3062c74d74c94ebe6359f067bed8311ba from qemu
2018-02-19 00:34:41 -05:00
Peter Maydell 2eaf79bfd3
fpu: Replace int8 typedef with int8_t
Replace the int8 softfloat-specific typedef with int8_t.
This change was made with

find include hw fpu target-* -name '*.[ch]' | xargs sed -i -e 's/\bint8\b/int8_t/g'

together with manual removal of the typedef definition, and
manual undoing of various mis-hits.

Backports commit 8f506c709adb7d3bed4ebefefe9487c156192a64 from qemu
2018-02-19 00:33:01 -05:00
Peter Maydell 63ac282f1a
fpu: Replace uint32 typedef with uint32_t
Replace the uint32 softfloat-specific typedef with uint32_t.
This change was made with

find include hw fpu target-* -name '*.[ch]' | xargs sed -i -e 's/\buint32\b/uint32_t/g'

together with manual removal of the typedef definition,
manual undoing of various mis-hits, and another couple of
fixes found via test compilation.

All the uses in hw/ were using the wrong type by mistake.

Backports commit 3a87d00910ef64a2eece4aad25d96ea10683fc5c from qemu
2018-02-19 00:29:52 -05:00
Peter Maydell 9712d8a7ac
fpu: Replace int32 typedef with int32_t
Replace the int32 softfloat-specific typedef with int32_t.
This change was made with

find hw include fpu target-* -name '*.[ch]' | xargs sed -i -e 's/\bint32\b/int32_t/g'

together with manual removal of the typedef definition, and
manual undoing of some mis-hits where macro arguments were
being used for token pasting rather than as a type.

The uses in hw/ipmi/ should not have been using this type at all.

Backports commit f4014512cda682a9d0c75310d278d7ae96b0505c from qemu
2018-02-19 00:24:56 -05:00
Peter Maydell df84f0d513
fpu: Replace uint64 typedef with uint64_t
Replace the uint64 softfloat-specific typedef with uint64_t.
This change was made with

find include fpu target-* -name '*.[ch]' | xargs sed -i -e 's/\buint64\b/uint64_t/g'

together with manual removal of the typedef definition, and
manual undoing of some mis-hits where macro arguments were
being used for token pasting rather than as a type.

Note that the target-mips/kvm.c and target-s390x/kvm.c changes are fixing
code that should not have been using the uint64 type in the first place.

Backports commit 182f42fdc219e6481654fcfb73b17e4b4e63b6ff from qemu
2018-02-19 00:16:49 -05:00
Peter Maydell 940106cd69
fpu: Replace int64 typedef with int64_t
Replace the int64 softfloat-specific typedef with int64_t.
This change was made with

find include fpu target-* -name '*.[ch]' | xargs sed -i -e 's/\bint64\b/int64_t/g'

together with manual removal of the typedef definition, and
manual undoing of some mis-hits where macro arguments were
being used for token pasting rather than as a type.

Backports commit f42c222482b651400f0fa417eb174da1c9502c1c from qemu
2018-02-19 00:14:18 -05:00
Peter Crosthwaite ce997e1caf
qom/cpu: Add MemoryRegion property
Add a MemoryRegion property, which if set is used to construct
the CPU's initial (default) AddressSpace.

Backports commit 6731d864f80938e404dc3e5eb7f6b76b891e3e43 from qemu
2018-02-18 21:54:50 -05:00
Lioncash 6d5f465449
uc: Handle freeing of multiple address spaces 2018-02-18 21:36:50 -05:00
Dr. David Alan Gilbert 75701d03ee
qemu_ram_foreach_block: pass up error value, and down the ramblock name
check the return value of the function it calls and error if it's non-0
Fixup qemu_rdma_init_one_block that is the only current caller,
  and rdma_add_block the only function it calls using it.

Pass the name of the ramblock to the function; helps in debugging.

Backports commit e3807054e20fb3b94d18cb751c437ee2f43b6fac from qemu
2018-02-18 19:17:18 -05:00
Peter Crosthwaite b82e711a65
memory: Add address_space_init_shareable()
This will either create a new AS or return a pointer to an
already existing equivalent one, if we have already created
an AS for the specified root memory region.

The motivation is to reuse address spaces as much as possible.
It's going to be quite common that bus masters out in device land
have pointers to the same memory region for their mastering yet
each will need to create its own address space. Let the memory
API implement sharing for them.

Aside from the perf optimisations, this should reduce the amount
of redundant output on info mtree as well.

Thee returned value will be malloced, but the malloc will be
automatically freed when the AS runs out of refs.

Backports commit f0c02d15b57da6f5463e3768aa0cfeedccf4b8f4 from qemu
2018-02-18 00:18:21 -05:00
Peter Maydell 1dfba71bef
exec.c: Add cpu_get_address_space()
Add a function to return the AddressSpace for a CPU based on
its numerical index. (Callers outside exec.c don't have access
to the CPUAddressSpace struct so can't just fish it out of the
CPUState struct directly.)

Backports commit 651a5bc03705102de519ebf079a40ecc1da991db from qemu
2018-02-17 23:22:23 -05:00
Peter Maydell 2fe995a0da
exec.c: Pass MemTxAttrs to iotlb_to_region so it uses the right AS
Pass the MemTxAttrs for the memory access to iotlb_to_region(); this
allows it to determine the correct AddressSpace to use for the lookup.

Backports commit a54c87b68a0410d0cf6f8b84e42074a5cf463732 from qemu
2018-02-17 23:19:00 -05:00
Peter Maydell 8edd6ffdfd
cputlb.c: Use correct address space when looking up MemoryRegionSection
When looking up the MemoryRegionSection for the new TLB entry in
tlb_set_page_with_attrs(), use cpu_asidx_from_attrs() to determine
the correct address space index for the lookup, and pass it into
address_space_translate_for_iotlb().

Backports commit d7898cda81b6efa6b2d7a749882695cdcf280eaa from qemu
2018-02-17 23:15:22 -05:00
Peter Maydell d23831f4dd
cpu: Add new asidx_from_attrs() method
Add a new method to CPUClass which the memory system core can
use to obtain the correct address space index to use for a memory
access with a given set of transaction attributes, together
with the wrapper function cpu_asidx_from_attrs() which implements
the default behaviour ("always use asidx 0") for CPU classes
which don't provide the method.

Backports commit d7f25a9e6a6b2c69a0be6033903b7d6087bcf47d from qemu
2018-02-17 22:45:32 -05:00
Lioncash 1cc4b92c67
cpu: Add new get_phys_page_attrs_debug() method
Add a new optional method get_phys_page_attrs_debug() to CPUClass.
This is like the existing get_phys_page_debug(), but also returns
the memory transaction attributes to use for the access.
This will be necessary for CPUs which have multiple address
spaces and use the attributes to select the correct address
space.

We provide a wrapper function cpu_get_phys_page_attrs_debug()
which falls back to the existing get_phys_page_debug(), so we
don't need to change every target CPU.

Backports commit 1dc6fb1f5cc5cea5ba01010a19c6acefd0ae4b73 from qemu
2018-02-17 22:43:42 -05:00
Peter Maydell 90c7c1bdb5
exec-all.h: Document tlb_set_page_with_attrs, tlb_set_page
Add documentation comments for tlb_set_page_with_attrs()
and tlb_set_page().

Backports commit 1787cc8ee55143b6071c87e59f08d56e7c22c1eb from qemu
2018-02-17 22:37:58 -05:00
Peter Maydell 51369b67cd
exec.c: Allow target CPUs to define multiple AddressSpaces
Allow multiple calls to cpu_address_space_init(); each
call adds an entry to the cpu->ases array at the specified
index. It is up to the target-specific CPU code to actually use
these extra address spaces.

Since this multiple AddressSpace support won't work with
KVM, add an assertion to avoid confusing failures.

Backports commit 12ebc9a76dd7702aef0a3618717a826c19c34ef4 from qemu
2018-02-17 22:35:13 -05:00
Peter Maydell f1b237236c
exec.c: Don't set cpu->as until cpu_address_space_init
Rather than setting cpu->as unconditionally in cpu_exec_init
(and then having target-i386 override this later), don't set
it until the first call to cpu_address_space_init.

This requires us to initialise the address space for
both TCG and KVM (KVM doesn't need the AS listener but
it does require cpu->as to be set).

For target CPUs which don't set up any address spaces (currently
everything except i386), add the default address_space_memory
in qemu_init_vcpu().

Backports commit 56943e8cc14b7eeeab67d1942fa5d8bcafe3e53f from qemu
2018-02-17 22:24:36 -05:00
Markus Armbruster e4976f4597
error: Improve documentation
While there, tighten error_append_hint()'s assertion.

Backports commit f4d0064afcff4c38b379800674938cde8f069dcd from qemu
2018-02-17 20:52:49 -05:00
Markus Armbruster 9398bd49fe
error: Document how to accumulate multiple errors
Backports commit 8d780f43921feb7fd8d0b58f779a22d1265f2378 from qemu
2018-02-17 20:49:12 -05:00
Peter Maydell f336fc39eb
osdep.h: Include glib-compat.h in osdep.h rather than qemu-common.h
Our use of glib is now pervasive across QEMU. Move the include of glib-compat.h
from qemu-common.h to osdep.h so that it is more widely accessible and doesn't
get forgotten by accident. (Failure to include it will result in build failure
on old versions of glib which is likely to be unnoticed by most developers.)

Backports commit 529490e5d664a20d5c4223070dd7c03a0e02b6bd from qemu
2018-02-17 20:47:28 -05:00
Paolo Bonzini 1650af8c8b
memory: try to inline constant-length reads
memcpy can take a large amount of time for small reads and writes.
Handle the common case of reading s/g descriptors from memory (there
is no corresponding "write" case that is as common, because writes
often use address_space_st* functions) by inlining the relevant
parts of address_space_read into the caller.

Backports commit 3cc8f884996584630734a90c9b3c535af81e3c92 from qemu
2018-02-17 20:44:39 -05:00
Paolo Bonzini 712c300639
memory: inline a few small accessors
These are used in the address_space_* fast paths.

Backports commit 1619d1fe737d2af068aefe134386a69b76164794 from qemu
2018-02-17 20:35:28 -05:00
Paolo Bonzini 9a78c61145
memory: extract first iteration of address_space_read and address_space_write
We want to inline the case where there is only one iteration, because
then the compiler can also inline the memcpy. As a start, extract
everything after the first address_space_translate call.

Backports commit a203ac702e0720135fac8b1f2061d119814c1798 from qemu
2018-02-17 20:31:21 -05:00
Paolo Bonzini 077ffc3bd5
memory: avoid unnecessary object_ref/unref
For the common case of DMA into non-hotplugged RAM, it is unnecessary
but expensive to do object_ref/unref. Add back an owner field to
MemoryRegion, so that these memory regions can skip the reference
counting.

Backports commit 612263cf33062f7441a5d0e3b37c65991fdc3210 from qemu
2018-02-17 20:10:25 -05:00
Paolo Bonzini e6b25279f8
memory: reorder MemoryRegion fields
Order fields so that all fields accessed during a RAM read/write fit in
the same cache line.

Backports commit a676854f3447019c7c4b005ab6aece905fccfddd from qemu
2018-02-17 19:48:52 -05:00
Eduardo Habkost 26791ea61b
exec: Eliminate qemu_ram_free_from_ptr()
Replace qemu_ram_free_from_ptr() with qemu_ram_free().

The only difference between qemu_ram_free_from_ptr() and
qemu_ram_free() is that g_free_rcu() is used instead of
call_rcu(reclaim_ramblock). We can safely replace it because:

* RAM blocks allocated by qemu_ram_alloc_from_ptr() always have
RAM_PREALLOC set;
* reclaim_ramblock(block) will do nothing except g_free(block)
if RAM_PREALLOC is set at block->flags.

Backports commit a29ac16632aec6065c72985b9f7eeb1ca6fbef4a from qemu
2018-02-17 19:37:45 -05:00
Markus Armbruster 03dffc1e9c
typedefs: Put them back into alphabetical order
"Please keep this list in alphabetical order" has been more honoured
in the breach than in the observance. Clean up.

While there, drop a redundant struct declaration.

Backports commit 2988cbeaf94203b2cf31c0b3f589aa4ebc0cff34 from qemu
2018-02-17 19:22:23 -05:00
Stefan Weil 5218799171
oslib-win32: Change return type of function getpagesize
getpagesize on Linux returns an int. Fix QEMU's implementation for
Windows to return an int (instead of size_t), too.

This fixes a compiler warning which was introduced recently
(commit 093e3c42).

Backports commit a28c2f2df7679e3a87789e9fb7ed69331f697297 from qemu
2018-02-17 19:10:37 -05:00
Daniel P. Berrange 3ba8959dfd
qom: Introduce ObjectPropertyIterator struct for iteration
Some users of QOM need to be able to iterate over properties
defined against an object instance. Currently they are just
directly using the QTAIL macros against the object properties
data structure.

This is bad because it exposes them to changes in the data
structure used to store properties, as well as changes in
functionality such as ability to register properties against
the class.

This provides an ObjectPropertyIterator struct which will
insulate the callers from the particular data structure
used to store properties. It can be used thus

ObjectProperty *prop;
ObjectPropertyIterator *iter;

iter = object_property_iter_init(obj);
while ((prop = object_property_iter_next(iter))) {
... do something with prop ...
}
object_property_iter_free(iter);

Backports commit a00c94824126901168bca5b89147f9e334a49e87 from qemu
2018-02-17 18:39:00 -05:00
Dr. David Alan Gilbert 60975685ce
qemu_ram_block_by_name
Add a function to find a RAMBlock by name; use it in two
of the places that already open code that loop; we've
got another use later in postcopy.

Backports commit e3dd74934f2d2c8c67083995928ff68e8c1d0030 from qemu
2018-02-17 18:01:16 -05:00
Dr. David Alan Gilbert cc088f84b5
qemu_ram_block_from_host
Postcopy sends RAMBlock names and offsets over the wire (since it can't
rely on the order of ramaddr being the same), and it starts out with
HVA fault addresses from the kernel.

qemu_ram_block_from_host translates a HVA into a RAMBlock, an offset
in the RAMBlock and the global ram_addr_t value.

Rewrite qemu_ram_addr_from_host to use qemu_ram_block_from_host.

Provide qemu_ram_get_idstr since its the actual name text sent on the
wire.

Backports commit 422148d3e56c3c9a07c0cf36c1e0a0b76f09c357 from qemu
2018-02-17 17:54:03 -05:00
Eric Blake 6bd4bc814f
qobject: Protect against use-after-free in qobject_decref()
Adding an assertion to qobject_decref() will ensure that a
programming error causing use-after-free will result in
immediate failure (provided no other thread has started
using the memory) instead of silently attempting to wrap
refcnt around and leaving the problem to potentially bite
later at a harder point to diagnose.

Backports commit cc9f60d4a2a4bf2578a9309a18f1c4602c9f5ce7 from qemu
2018-02-17 17:28:27 -05:00
Peter Maydell e1a4e4208f
pc: resizeable ROM blocks
This makes ROM blocks resizeable. This infrastructure is required for other
functionality we have queued.

Backports commit aaf03019175949eda5087329448b8a0033b89479 from qemu
2018-02-17 17:18:38 -05:00
Michael S. Tsirkin dce38dd8eb
memory: add memory_region_set_size
Add API to change MR size.
Will be used internally for RAM resize.

Backports commit e7af4c67300b3f9382e96f7a6741a5992116b2d2 from qemu
2018-02-17 16:02:26 -05:00
Cao jin 73c55b2eb3
qom/object: fix 2 comment typos
Also change the misleading definition of macro OBJECT_CLASS_CHECK

Backports commit b30d80546421c6ea919096b596887f496c80af0a from qemu
2018-02-17 15:38:14 -05:00
Richard Henderson 3ec0adcc07
target-*: Introduce and use cpu_breakpoint_test
Reduce the boilerplate required for each target. At the same time,
move the test for breakpoint after calling tcg_gen_insn_start.

Note that arm and aarch64 do not use cpu_breakpoint_test, but still
move the inline test down after tcg_gen_insn_start.

Backports commit b933066ae03d924a92b2616b4a24e7d91cd5b841 from qemu
2018-02-17 15:24:10 -05:00
Antony Pavlov 924d4599cc
qemu-log: add log category for MMU info
Running barebox on qemu-system-mips* with '-d unimp' overloads
stderr by very very many mips_cpu_handle_mmu_fault() messages:

  mips_cpu_handle_mmu_fault address=b80003fd ret 0 physical 00000000180003fd prot 3
  mips_cpu_handle_mmu_fault address=a0800884 ret 0 physical 0000000000800884 prot 3
  mips_cpu_handle_mmu_fault pc a080cd80 ad b80003fd rw 0 mmu_idx 0

So it's very difficult to find LOG_UNIMP message.

The mips_cpu_handle_mmu_fault() messages appear on enabling ANY
logging! It's not very handy.

Adding separate log category for *_cpu_handle_mmu_fault()
logging fixes the problem.

Backports commit 339aaf5b7f26d1e638641c59a44883b7654bd8ea from qemu
2018-02-17 15:24:05 -05:00
Richard Henderson e9e8833da4
cpu-exec: Add nochain debug flag
Respect it to avoid linking TBs together.

Backports commit 89a82cd4b6a90fe117fa715e2abe51d5c607560c from qemu
2018-02-17 15:24:04 -05:00
Michael S. Tsirkin 722c58affb
exec: factor out duplicate mmap code
Anonymous and file-backed RAM allocation are now almost exactly the same.

Reduce code duplication by moving RAM mmap code out of oslib-posix.c and
exec.c.

Backports commit 794e8f301a17953efa78ab7538019ec43c59e82a from qemu
2018-02-17 15:24:03 -05:00
Richard Henderson a276496ebc
tcg: Adjust CODE_GEN_AVG_BLOCK_SIZE
At present, the "average" guestimate of TB size is way too small, leading
to many unused entries in the pre-allocated TB array. For a guest with 1GB
ram, we're currently allocating 256MB for the array.

Survey arm, alpha, aarch64, ppc, sparc, i686, x86_64 guests running on
x86_64 and ppc64 hosts and select a new average. The size of the array
drops to 81MB with no more flushing than before.

Backports commit 126d89e8cdfa3be15d51f76906eaccbcd0023f98 from qemu
2018-02-17 15:24:01 -05:00
Richard Henderson bdf667fd4e
tcg: Check for overflow via highwater mark
We currently pre-compute an worst case code size for any TB, which
works out to be 122kB. Since the average TB size is near 1kB, this
wastes quite a lot of storage.

Instead, check for overflow in between generating code for each opcode.
The overhead of the check isn't measurable and wastage is minimized.

Backports commit b125f9dc7bd68cd4c57189db4da83b0620b28a72 from qemu
2018-02-17 15:24:00 -05:00
Richard Henderson a5ac288135
tcg: Remove gen_intermediate_code_pc
It is no longer used, so tidy up everything reached by it.
This includes the gen_opc_* arrays, the search_pc parameter
and the inline gen_intermediate_code_internal functions.

Backports commit 4e5e1215156662b2b153255c49d4640d82c5568b from qemu
2018-02-17 15:23:59 -05:00
Richard Henderson 66de6cc37c
tcg: Save insn data and use it in cpu_restore_state_from_tb
We can now restore state without retranslation.

Backports commit fca8a500d519a56abeaedf8073167a61d3c6b9c4 from qemu
2018-02-17 15:23:59 -05:00
Paolo Bonzini cab4c979f0
cpu-exec: add a new CF_USE_ICOUNT cflag
Backports commit 0266359e57987d6be53fbcb885f2dd39c1dae940 from qemu
2018-02-17 15:23:58 -05:00
Pavel Dovgalyuk ac46898b3c
cpu-exec: invalidate nocache translation if they are interrupted
In this case, QEMU might longjmp out of cpu-exec.c and miss the final
cleanup in cpu_exec_nocache.  Do this manually through a new compile
flag.

Backports commit d8a499f17ee5f05407874f29f69f0e3e3198a853 from qemu
2018-02-17 15:23:58 -05:00
Richard Henderson 1cbd175736
tcg: Pass data argument to restore_state_to_opc
The gen_opc_* arrays are already redundant with the data stored in
the insn_start arguments. Transition restore_state_to_opc to use
data from the latter.

Backports commit bad729e272387de7dbfa3ec4319036552fc6c107 from qemu
2018-02-17 15:23:58 -05:00
Lioncash f8d54a8f3c
Drop unused crypto source files 2018-02-17 15:23:57 -05:00
Lioncash da8e73b887
qom/cpu: Add throttle_thread_scheduled member
Extracts the member out of commit 2adcc85d407c1ab985f5abed808c78dbb84f4773
2018-02-17 15:23:55 -05:00
Pavel Butsykin 96f8d6325a
apic_internal.h: fix formatting and drop unused consts
Fix formatting of local apic definitions and drop unused constant
APIC_INPUT_POLARITY, APIC_SEND_PENDING. Magic numbers in shifts are
replaced with constants defined just above.

Backports commit b6cfc3c2ac5a1025d8fe7d74421a73ec495408f9 from qemu
2018-02-17 15:23:54 -05:00
Pavel Butsykin 79559c82aa
apic_internal.h: rename ESR_ILLEGAL_ADDRESS to APIC_ESR_ILLEGAL_ADDRESS
Added prefix APIC_ for determining the constant of a particular subsystem,
improve the overall readability and match other constant names.

Backports commit a22bf99c5852f369dc620be2c3c93535a5b69a58 from qemu
2018-02-17 15:23:54 -05:00
Pavel Butsykin fcd3e3e449
apic_internal.h: added more constants
These constants are needed for optimal access to
bit fields local apic registers without magic numbers.

Backports commit 6519d187e301c5a14a8c9b32fb93027b04a4336d from qemu
2018-02-17 15:23:54 -05:00
Peter Crosthwaite afb48e9fc5
cputlb: Change tlb_set_dirty() arg to cpu
Change tlb_set_dirty() to accept a CPU instead of an env pointer. This
allows for removal of another CPUArchState usage from prototypes that
need to be QOMified.

Backports commit bcae01e468d961ad9afaf4148329147e4be209ab from qemu
2018-02-17 15:23:52 -05:00
Lioncash 5e2862b29d
cpu: Add crash_occurred flag into CPUState
CPUState::crash_occurred field inside CPUState marks
that guest crash occurred. This value is added into
cpu common migration subsection.

Backports commit bac05aa9a77af1ca7972c8dc07560f4daa7c2dfc from qemu
2018-02-17 15:23:51 -05:00
Paolo Bonzini 195a86283f
exec: make mmap_lock/mmap_unlock globally available
There is some iffy lock hierarchy going on in translate-all.c. To
fix it, we need to take the mmap_lock in cpu-exec.c. Make the
functions globally available.

Backports commit 8fd19e6cfd5b6cdf028c6ac2ff4157ed831ea3a6 from qemu
2018-02-17 15:23:49 -05:00
Pavel Dovgalyuk 4a05c9ee28
cpu-exec: introduce loop exit with restore function
This patch introduces loop exit function, which also
restores guest CPU state according to the value of host
program counter.

Backports commit 1c3c8af1fb40a481c07749e0448644d9b7700415 from qemu
2018-02-17 15:23:38 -05:00
Pavel Dovgalyuk 28f154129b
softmmu: remove now unused functions
Now that the cpu_ld/st_* function directly call helper_ret_ld/st, we can
drop the old helper_ld/st functions.

Backports commit b8611499b940b1b4db67aa985e3a844437bcbf00 from qemu
2018-02-17 15:23:38 -05:00
Pavel Dovgalyuk 6cdaaf9b1b
softmmu: add helper function to pass through retaddr
This patch introduces several helpers to pass return address
which points to the TB. Correct return address allows correct
restoring of the guest PC and icount. These functions should be used when
helpers embedded into TB invoke memory operations.

Backports commit 282dffc8a4bfe8724548cabb8a26698bde0a6e18 from qemu
2018-02-17 15:23:38 -05:00
Benjamin Herrenschmidt 1722be3e73
tlb: Add ifetch argument to cpu_mmu_index()
This is set to true when the index is for an instruction fetch
translation.

The core get_page_addr_code() sets it, as do the SOFTMMU_CODE_ACCESS
acessors.

All targets ignore it for now, and all other callers pass "false".

This will allow targets who wish to split the mmu index between
instruction and data accesses to do so. A subsequent patch will
do just that for PowerPC.

Backports commit 97ed5ccdee95f0b98bedc601ff979e368583472c from qemu
2018-02-17 15:23:37 -05:00
Markus Armbruster 97ad660361
error: On abort, report where the error was created
This is particularly useful when we abort in error_propagate(),
because there the stack backtrace doesn't lead to where the error was
created. Looks like this:

Unexpected error in parse_block_error_action() at .../qemu/blockdev.c:322:
qemu-system-x86_64: -drive if=none,werror=foo: 'foo' invalid write error action
Aborted (core dumped)

Note: to get this example output, I monkey-patched drive_new() to pass
&error_abort to blockdev_init().

To keep the error handling boiler plate from growing even more, all
error_setFOO() become macros expanding into error_setFOO_internal()
with additional __FILE__, __LINE__, __func__ arguments. Not exactly
pretty, but it works.

The macro trickery breaks down when you take the address of an
error_setFOO(). Fortunately, we do that in just one place: qemu-ga's
Windows VSS provider and requester DLL wants to call
error_setg_win32() through a function pointer "to avoid linking glib
to the DLL". Use error_setg_win32_internal() there. The use of the
function pointer is already wrapped in a macro, so the churn isn't
bad.

Code size increases by some 35KiB for me (0.7%). Tolerable. Could be
less if we passed relative rather than absolute source file names to
the compiler, or forwent reporting __func__.

Backports commit 1e9b65bb1bad51735cab6c861c29b592dccabf0e from qemu
2018-02-17 15:23:37 -05:00
Markus Armbruster 46f398569f
error: Revamp interface documentation
Backports commit edf6f3b3358597d37da0cf636ce3ed8a546d0f26 from qemu
2018-02-17 15:23:37 -05:00
Markus Armbruster eebc32fd75
error: error_set_errno() is unused, drop
Backports commit 4463dcb85c9f992f0c4d93f2142c8d64dcc85c5c from qemu
2018-02-17 15:23:37 -05:00
Markus Armbruster 661e38e3ed
error: Make error_setg() a function
Saves a tiny amount of code at every call site.

Backports commit a9499ddd82a99c66cc72a08e72427c423acfea1c from qemu
2018-02-17 15:23:36 -05:00
Peter Crosthwaite a249923d4d
qom: Add recursive version of object_child_for_each
Useful for iterating through an entire QOM subtree.

Backports commit d714b8de7747f20fe42e5716d1d44f91e2b891f4 from qemu
2018-02-17 15:23:35 -05:00
Peter Maydell e08c524068
Remove unused qemu_fls function
Nothing uses qemu_fls() any more, so delete it.

Backports commit 10944a19209bb520054569e0f156f50338901264 from qemu
2018-02-17 15:23:35 -05:00
Lioncash 9ce672c511
host-util: Add power calculation functions 2018-02-17 15:23:35 -05:00
Lioncash f81894dddb
exec: Add semihosting stubs 2018-02-17 15:23:33 -05:00
Peter Maydell 6e94bda144
cputlb: Add functions for flushing TLB for a single MMU index
Guest CPU TLB maintenance operations may be sufficiently
specialized to only need to flush TLB entries corresponding
to a particular MMU index. Implement cputlb functions for
this, to avoid the inefficiency of flushing TLB entries
which we don't need to.

Backports commit d7a74a9d4a68e27b3a8ceda17bb95cb0a23d8e4d from qemu
2018-02-17 15:23:31 -05:00
Lioncash afaf2a99d3
apic_internal.h: Include cpu.h directly
apic_internal.h relies on cpu.h having been included (for the
X86CPU type); include it directly rather than relying on it
being pulled in via one of the other includes like timer.h.

Backports commit 20fbcfdd58ea47607a5755979d43f8c48ac93f08 from qemu
2018-02-17 15:23:29 -05:00
Peter Maydell d3a00d97bc
qemu-common.h: Move muldiv64() to host-utils.h
Move the muldiv64() function from qemu-common.h to host-utils.h.
This puts it together with all the other arithmetic functions
where we provide a version with __int128_t and a fallback
without, and allows headers which need muldiv64() to avoid
including qemu-common.h.

We don't include host-utils from qemu-common.h, to avoid dragging
more things into qemu-common.h than it already has; in practice
everywhere that needs muldiv64() can get it via qemu/timer.h.

Backports commit 49caffe0cc95a9d0dc344e3328be8197f3536cf8 from qemu
2018-02-17 15:23:29 -05:00
Peter Maydell fa87410077
osdep.h: Add header comment
Add a header comment to osdep.h, explaining what the header is for
and some rules to avoid circular-include difficulties.

Backports commit 03557b9abaee78e9d1ef5cd236d32a7b3e75e6f8 from qemu
2018-02-17 15:23:29 -05:00
Lioncash 9c63994b45
osdep.h: Move some OS header includes and fixups from qemu-common.h
qemu-common.h has some system header includes and fixups for
things that might be missing. This is really an OS dependency
and belongs in osdep.h, so move it across.

Backports commit bfe7e449f14313f646da621288ca2fd12223414f from qemu
2018-02-17 15:23:29 -05:00
Peter Maydell 19cd2a7ca4
qemu-common.h: Move Win32 fixups into os-win32.h
qemu-common.h includes some fixups for things the Win32
headers don't define or define weirdly. These really
belong in os-win32.h, so move them there.

Backports commit 1aad8104f3b69206da1f868639e1f69c26f6d482 from qemu
2018-02-17 15:23:29 -05:00
Peter Maydell d21aec2212
qemu-common.h: Document cutils.c string functions
Add documentation comments for various utility string functions
which we have implemented in util/cutils.c:
 pstrcpy()
 strpadcpy()
 pstrcat()
 strstart()
 stristart()
 qemu_strnlen()
 qemu_strsep()

Backports commit ab6036630865eff8bb12dd51dfa6921b4607fc81 from qemu
2018-02-17 15:23:28 -05:00
Lioncash cef0353be4
qemu-common: Add missing string util functions 2018-02-17 15:23:28 -05:00
Paolo Bonzini 542f162b35
cutils: add strpadcpy()
Backports commit 2a025ae454c361fb03aadf88e8a2f678b80b38e6 from qemu
2018-02-17 15:23:28 -05:00
Peter Maydell 7d5ef87f8c
compiler.h: Use glue() in QEMU_BUILD_BUG_ON define
Rather than rolling custom concatenate-strings macros for the
QEMU_BUILD_BUG_ON macro to use, use the glue() macro we already
have (since it's now available to us in this header).

Backports commit 24134c4e9126bf505b612e901c63a102fc471083 from qemu
2018-02-17 15:23:28 -05:00
Peter Maydell 29a7d89d19
osdep.h: Move some compiler-specific things to compiler.h
osdep.h has a few things which are really compiler specific;
move them to compiler.h, and include compiler.h from osdep.h.

Backports commit 4912086865083a008f4fb73173fd0ddf2206c4d9 from qemu
2018-02-17 15:23:28 -05:00
Peter Maydell c6a4c2fa17
osdep.h: Remove qemu_printf
qemu_printf is an ancient remnant which has been a simple #define to
printf for over a decade, and is used in only a few places. Expand
it out in those places and remove the #define.

Backports commit 71baf787d8fa2a5d186f22d8154069fd212be37f from qemu
2018-02-17 15:23:27 -05:00
Peter Crosthwaite 590c3dbb76
cpu_defs: Simplify CPUTLB padding logic
There was a complicated subtractive arithmetic for determining the
padding on the CPUTLBEntry structure. Simplify this with a union.

Backports commit b4a4b8d0e0767c85946fd8fc404643bf5766351a from qemu
2018-02-17 15:23:27 -05:00
Eduardo Habkost d5c7362e03
pc: Move PCMachineClass, PCMachineState to qemu/typedefs.h
They will be used inside hw/xen/xen.h, which doesn't include
hw/i386/pc.h.

Backports commit 8170dfa077761ed979b45f608cf706253a764f0d from qemu
2018-02-17 15:23:27 -05:00
Peter Crosthwaite 6279dfc113
cpu: Add wrapper for the set_pc() hook
Add a wrapper around the CPUClass::set_pc() hook.

Backports commit 2991b8904730d663f12ad42e35798ecc22fe151c from qemu
2018-02-17 15:23:19 -05:00
Peter Crosthwaite 9e23308b66
cpu: Change cpu_exec_init() arg to cpu, not env
The callers (most of them in target-foo/cpu.c) to this function all
have the cpu pointer handy. Just pass it to avoid an ENV_GET_CPU() from
core code (in exec.c).

Backports commit 4bad9e392e788a218967167a38ce2ae7a32a6231 from qemu
2018-02-17 15:23:18 -05:00
Peter Crosthwaite 8200453545
translate-all: Change tb_flush() env argument to cpu
All of the core-code usages of this API have the cpu pointer handy so
pass it in. There are only 3 architecture specific usages (2 of which
are commented out) which can just use ENV_GET_CPU() locally to get the
cpu pointer. The reduces core code usage of the CPU env, which brings
us closer to common-obj'ing these core files.

Backports commit bbd77c180d7ff1b04a7661bb878939b2e1d23798 from qemu
2018-02-17 15:23:18 -05:00
Daniel P. Berrange 2e97ecfbcd
crypto: move built-in AES implementation into crypto/
To prepare for a generic internal cipher API, move the
built-in AES implementation into the crypto/ directory

Backports commit 6f2945cde60545aae7f31ab9d5ef29531efbc94f from qemu
2018-02-17 15:23:17 -05:00
Daniel P. Berrange 5019f39c15
crypto: introduce new module for computing hash digests
Introduce a new crypto/ directory that will (eventually) contain
all the cryptographic related code. This initially defines a
wrapper for initializing gnutls and for computing hashes with
gnutls. The former ensures that gnutls is guaranteed to be
initialized exactly once in QEMU regardless of CLI args. The
block quorum code currently fails to initialize gnutls so it
only works by luck, if VNC server TLS is not requested. The
hash APIs avoids the need to litter the rest of the code with
preprocessor checks and simplifies callers by allocating the
correct amount of memory for the requested hash.

Backports commit ddbb0d09661f5fce21b335ba9aea8202d189b98e from qemu
2018-02-17 15:23:17 -05:00
Peter Crosthwaite 13b919f5c8
cpu-all: complete real host page size API
Currently the "host" page size alignment API is really aligning to both
host and target page sizes. There is the qemu_real_page_size which can
be used for the actual host page size but it's missing a mask and ALIGN
macro as provided for qemu_page_size. Complete the API. This allows
system level code that cares about the host page size to use a
consistent alignment interface without having to un-needingly align to
the target page size. This also reduces system level code dependency
on the cpu specific TARGET_PAGE_SIZE.

Backports commit 4e51361d79289aee2985dfed472f8d87bd53a8df from qemu
2018-02-17 15:23:16 -05:00
Peter Maydell 2f3f2ae092
Stop including qemu-common.h in memory.h
Including qemu-common.h from other header files is generally a bad
idea, because it means it's very easy to end up with a circular
dependency. For instance, if we wanted to include memory.h from
qom/cpu.h we'd end up with this loop:
memory.h -> qemu-common.h -> cpu.h -> cpu-qom.h -> qom/cpu.h -> memory.h

Remove the include from memory.h. This requires us to fix up a few
other files which were inadvertently getting declarations indirectly
through memory.h.

The biggest change is splitting the fprintf_function typedef out
into its own header so other headers can get at it without having
to include qemu-common.h.

Backports commit fba0a593b2809ecdda68650952cf3d3332ac1990 from qemu
2018-02-17 15:23:16 -05:00
Jan Kiszka b93c24ba31
memory: Add global-locking property to memory regions
This introduces the memory region property "global_locking". It is true
by default. By setting it to false, a device model can request BQL-free
dispatching of region accesses to its r/w handlers. The actual BQL
break-up will be provided in a separate patch.

Backports commit 196ea13104f802c508e57180b2a0d2b3418989a3 from qemu
2018-02-17 15:23:16 -05:00
Peter Crosthwaite 82a22d8f3a
cpu-defs: Move out TB_JMP defines
These are not Architecture specific in any way so move them out of
cpu-defs.h. tb-hash.h is an appropriate place as a leading user and
their strong relationship to TB hashing and caching.

Backports commit 41da4bd6420afd1209c408974920f63ff9c658e1 from qemu
2018-02-17 15:23:15 -05:00
Peter Crosthwaite 09d23c6604
include/exec: Move tb hash functions out
This is one of very few things in exec-all with a genuine CPU
architecture dependency. Move these hashing helpers to a new
header to trim exec-all.h down to a near architecture-agnostic
header.

The defs are only used by cpu-exec and translate-all which are both
arch-obj's so the new tb-hash.h has no core code usage.

Backports commit e1b89321bafea9fb33d87852fc91fee579d17dfe from qemu
2018-02-17 15:23:15 -05:00
Peter Crosthwaite 860e4184df
include/exec: Move standard exceptions to cpu-all.h
These exception indicies are generic and don't have any reliance on the
per-arch cpu.h defs. Move them to cpu-all.h so they can be used by core
code that does not have access to cpu-defs.h.

Backports commit 9e0dc48c9f05505b53cb28f860456a0648e56ddf from qemu
2018-02-17 15:23:15 -05:00
Artyom Tarasenko e1b179a7d3
qemu-common: add VEC_OR macro
Intel C Compiler version 15.0.3.187 Build 20150407 doesn't support
'|' function for non floating-point simd operands.

Define VEC_OR macro which uses _mm_or_si128 supported
both in icc and gcc on x86 platform.

Backports commit 34664507c7f038842f20a2c787915680b1fabba2 from qemu
2018-02-17 15:23:15 -05:00
Peter Crosthwaite a591219ad6
cpu-defs: Move CPU_TEMP_BUF_NLONGS to tcg
The usages of this define are pure TCG and there is no architecture
specific variation of the value. Localise it to the TCG engine to
remove another architecture agnostic piece from cpu-defs.h.

This follows on from a28177820a868eafda8fab007561cc19f41941f4 where
temp_buf was moved out of the CPU_COMMON obsoleting the need for
the super early definition.

Backports commit 6e0b07306d1793e8402dd218d2e38a7377b5fc27 from qemu
2018-02-17 15:23:15 -05:00
Markus Armbruster b5841191bc
qerror: Move #include out of qerror.h 2018-02-17 15:23:10 -05:00
Markus Armbruster 15553fc60d
qerror: Finally unused, clean up
Remove it except for two things in qerror.h:

* Two #include to be cleaned up separately to avoid cluttering this
patch.

* The QERR_ macros. Mark as obsolete.

Backports commit 4629ed1e98961bbe678db68ef5f4342ff174a6c3 from qemu
2018-02-17 15:23:10 -05:00
Markus Armbruster 76c16a46c7
qerror: Clean up QERR_ macros to expand into a single string
These macros expand into error class enumeration constant, comma,
string. Unclean. Has been that way since commit 13f59ae.

The error class is always ERROR_CLASS_GENERIC_ERROR since the previous
commit.

* Prepend every use of a QERR_ macro by ERROR_CLASS_GENERIC_ERROR, and
delete it from the QERR_ macro. No change after preprocessing.

* Rewrite error_set(ERROR_CLASS_GENERIC_ERROR, ...) into
error_setg(...). Again, no change after preprocessing.

Backports commit c6bd8c706a799eb0fece99f468aaa22b818036f3 from qemu
2018-02-17 15:23:09 -05:00
Markus Armbruster 349447b324
qerror: Eliminate QERR_DEVICE_NOT_FOUND
Error classes other than ERROR_CLASS_GENERIC_ERROR should not be used
in new code. Hiding them in QERR_ macros makes new uses hard to spot.
Fortunately, there's just one such macro left. Eliminate it with this
coccinelle semantic patch:

@@
expression EP, E;
@@
-error_set(EP, QERR_DEVICE_NOT_FOUND, E)
+error_set(EP, ERROR_CLASS_DEVICE_NOT_FOUND, "Device '%s' not found", E)

Backports commit 75158ebbe259f0bd8bf435e8f4827a43ec89c877 from qemu
2018-02-17 15:23:09 -05:00