Backports commits 2994fd96d986578a342f2342501b4ad30f6d0a85,
701e3c78ce45fa630ffc6826c4b9a4218954bc7f, and
d1853231c60d16af78cf4d1608d043614bfbac0b from qemuu
This function needs to be converted to QOM hook and virtualised for
multi-arch. This rename interferes, as cpu-qom will not have access
to the renaming causing name divergence. This rename doesn't really do
anything anyway so just delete it.
Backports commit 8642c1b81e0418df066a7960a7426d85a923a253 from qemu
Move vcpu's associated numa_node field out of generic CPUState
into inherited classes that actually care about cpu<->numa mapping,
i.e: ARMCPU, PowerPCCPU, X86CPU.
Backports relevant parts of commit 15f8b14228b856850df3fa5ba999ad96521f2208 from qemu
This unifies 5 copies of checks for supported vector size,
and in the process fixes a missing check in tcg_gen_gvec_2s.
This lead to an assertion failure for 64-bit vector multiply,
which is not available in the AVX instruction set.
Bakports commit adb196cbd5cff26547bc32a208074f03f4c4a627 from qemu
Unknown why -m32 was passing with gcc but not clang; it should have
failed for both. This would be used for tcg_gen_dup_i64_vec, and
visible with the right TB and an aarch64 guest.
Backports commit 7f34ed4bcdfda55f978f51aadca64aa970c9f4b6 from qemu
Function cpu_handle_interrupt calls cc->cpu_exec_interrupt to process
pending hardware interrupts. Under the hood cpu_exec_interrupt uses
cpu->exception_index to pass information to the internal function which
is usually common for exception and interrupt processing.
But this value is not reset after return and may be processed again
by cpu_handle_exception. This does not happen due to overwriting
the exception_index at the end of cpu_handle_interrupt.
But this branch may also overwrite the valid exception_index in some cases.
Therefore this patch:
1. resets exception_index just after the call to cpu_exec_interrupt
2. prevents overwriting the meaningful value of exception_index
Backports commit 5f3bdfd4fa33255542a4b6249913d9ffb11b44f9 from qemu
Actually enable the global memory barriers if supported by the OS.
Because only recent versions of Linux include the support, they
are disabled by default. Note that it also has to be disabled
for QEMU to run under Wine.
Before this patch, rcutorture reports 85 ns/read for my machine,
after the patch it reports 12.5 ns/read. On the other hand updates
go from 50 *micro*seconds to 20 *milli*seconds.
Backports commit a40161cbe9ccbcbab798c3e4d257c4bba99d153a from qemu
This new header file provides heavy-weight "global" memory barriers that
enforce memory ordering on each running thread belonging to the current
process. For now, use a dummy implementation that issues memory barriers
on both sides (matching what QEMU has been doing so far).
Backports commit c8d3877e48c4f57381d72eaf8d016bff12ce2d7c from qemu
Unify half a dozen copies of very similar code (the only difference being
whether comparisons were case-sensitive) and use it also in Tricore,
which did not do any sorting of CPU model names.
Backports commit 47c66009ab793241e8210b3018c77a9ce9506aa8 from qemu
There are qemu_strtoNN functions for various sized integers. This adds two
more for plain int & unsigned int types, with suitable range checking.
Backports commit 473a2a331ee382703f7ca0067ba2545350cfa06c from qemu
Add Intel Processor Trace related definition. It also add
corresponding part to kvm_get/set_msr and vmstate.
Backports commit b77146e9a129bcdb60edc23639211679ae846a92 from qemu
Expose Intel Processor Trace feature to guest.
To make Intel PT live migration safe and get same CPUID information
with same CPU model on diffrent host. CPUID[14] is constant in this
patch. Intel PT use EPT is first supported in IceLake, the CPUID[14]
get on this machine as default value. Intel PT would be disabled
if any machine don't support this minial feature list.
Backports commit e37a5c7fa459558b5020588994707fe3fdd6616e from qemu
Add KVM_HINTS_DEDICATED performance hint, guest checks this feature bit
to determine if they run on dedicated vCPUs, allowing optimizations such
as usage of qspinlocks.
Backports commit be7773268d98176489483a315d3e2323cb0615b9 from qemu
This MSR returns the number of #SMIs that occurred on
CPU since boot.
KVM commit 52797bf9a875 ("KVM: x86: Add emulation of MSR_SMI_COUNT")
introduced support for emulating this MSR.
This commit adds support for QEMU to save/load this
MSR for migration purposes.
Backports relevant parts of commit e13713db5b609d9a83c9cfc8ba389d4215d4ba29 from qemu
When SEV is enabled, CPUID 0x8000_001F should provide additional
information regarding the feature (such as which page table bit is used
to mark the pages as encrypted etc).
The details for memory encryption CPUID is available in AMD APM
(https://support.amd.com/TechDocs/24594.pdf) Section E.4.17
Backports relevant parts of commit 6cb8f2a663a47c6e0da17fc4fb9e06abfda2bd48 from qemu
Using a local m68k floatx80_cosh()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit 02f9124ebe26c36f0f7ed58085bd963e4372b2cd from qemu
Using a local m68k floatx80_sinh()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit eee6b892a6063c2807ecf33a2f62a8d7cca7652c from qemu
Using local m68k floatx80_tanh() and floatx80_etoxm1()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit 9937b02965c2a7dbc4b21d98e29b082bab095aa5 from qemu
Using a local m68k floatx80_atanh()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit e3655afa137b2e0999537eef273a2845ba21d68c from qemu
Using a local m68k floatx80_acos()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit c84813b807fc82c68ff6d72387f95b15ad283bf6 from qemu
Using a local m68k floatx80_asin()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit bc20b34e03b51725d7f008551b5f56f1da07ab6a from qemu
Using a local m68k floatx80_atan()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit 8c992abc892c90caf1d4dd5b4482cda052a280ba from qemu
Using a local m68k floatx80_cos()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit 68d0ed37866de2c5cafc4e2589e263961b2e8cd6 from qemu
Using a local m68k floatx80_sin()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit 5add1ac42faffd3d3639101fa778dced693a65a3 from qemu
Using a local m68k floatx80_tan()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit 273401809c8a8330e5430f2c958467efa7079b2c from qemu
We already handle this in the backends, and the lifetime datum
for the TCGOp is already large enough.
Backports commit 1df3caa946e08b387511dfba3a37d78910e51796 from qemu
The header is only used by accel/tcg/cputlb.c so we can
move it to the accel/tcg/ folder, too.
Backports commit da1849c1eba50aa372f87c7945d7b230eb2b2fb2 from qemu
move tcg-runtime.c, translate-all.(ch) and translate-common.c into
accel/tcg/ subdirectory and updated related trace-events file.
Backports commit 244f144134d0dd182f1af8654e7f9a79fe770368 and applies
relevant changes made in db432672dc50ed86dda17ac821b7eb07411a90af and
d9bb58e51068dfc48746c6af0179926c8dc05bce from qemu
Now we have a working '-cpu max', the linux-user-only
'any' CPU is pretty much the same thing, so implement it
that way.
For the moment we don't add any of the extra feature bits
to the system-emulation "max", because we don't set the
ID register bits we would need to to advertise those
features as present.
Backports commit a0032cc5427d0d396aa0a9383ad9980533448ea4 from qemu
Add support for "-cpu max" for ARM guests. This CPU type behaves
like "-cpu host" when KVM is enabled, and like a system CPU with
the maximum possible feature set otherwise. (Note that this means
it won't be migratable across versions, as we will likely add
features to it in future.)
Backports commit bab52d4bba3f22921a690a887b4bd0342f2754cd from qemu
The cortex A53 TRM specifies that bits 24 and 25 of the L2CTLR register
specify the number of cores in the processor, not the total number of
cores in the system. To report this correctly on machines with multiple
CPU clusters (ARM's big.LITTLE or Xilinx's ZynqMP) we need to allow
the machine to overwrite this value. To do this let's add an optional
property.
Backports commit f9a697112ee64180354f98309a5d6b691cc8699d from qemu
A few block drivers will need to rename .bdrv_create options for their
QAPIfication, so let's have a helper function for that.
Backports commit bcebf102ccc3c6db327f341adc379fdf0673ca6b from qemu
Using a local m68k floatx80_tentox()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit 6c25be6e30bda0e470f8f0b6b93d53a6efe469e8 from qemu
Using a local m68k floatx80_twotox()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit 068f161536d9a28a5bc482f3de9c387b2fe5908d from qemu
Using a local m68k floatx80_etox()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit 40ad087330bee5394c9e78c97f909f580be69b58 from qemu
Using a local m68k floatx80_log2()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit 67b453ed73fe65949c24e6ca2b43f6816a89a301 from qemu
Using a local m68k floatx80_log10()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit 248efb66fb88bc17c04a0d0f09a3539a43c80769 from qemu
Using a local m68k floatx80_logn()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit 50067bd16fead5d78a283130efbf3e3b026de450 from qemu
Using a local m68k floatx80_lognp1()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]
Backports commit 4b5c65b8f02a057bc1b77839b5012544f96fec80 from qemu
This functions is needed by upcoming m68k softfloat functions.
Source code copied for WinUAE (tag 3500)
(The WinUAE file has been copied from QEMU and has
the QEMU licensing notice)
Backports commit 9a069775a8087cbd6fa8c479b69be8d37bd90351 from qemu
This shares an cached empty FlatView among address spaces. The empty
FV is used every time when a root MR renders into a FV without memory
sections which happens when MR or its children are not enabled or
zero-sized. The empty_view is not NULL to keep the rest of memory
API intact; it also has a dispatch tree for the same reason.
On POWER8 with 255 CPUs, 255 virtio-net, 40 PCI bridges guest this halves
the amount of FlatView's in use (557 -> 260) and dispatch tables
(~800000 -> ~370000). In an unrelated experiment with 112 non-virtio
devices on x86 ("-M pc"), only 4 FlatViews are alive, and about ~2000
are created at startup.
Backports commit 092aa2fc65b7a35121616aad8f39d47b8f921618 from qemu
A container can be used instead of an alias to allow switching between
multiple subregions. In this case we cannot directly share the
subregions (since they only belong to a single parent), but if the
subregions are aliases we can in turn walk those.
This is not enough to remove all source of quadratic FlatView creation,
but it enables sharing of the PCI bus master FlatViews (and their
AddressSpaceDispatch structures) across all PCI devices. For 112
virtio-net-pci devices, boot time is reduced from 25 to 10 seconds and
memory consumption from 1.4 to 1 G.
Backports commit e673ba9af9bf8fd8e0f44025ac738b8285b3ed27 from qemu
This avoids usual memory_region_transaction_commit() which rebuilds
all FVs.
On POWER8 with 255 CPUs, 255 virtio-net, 40 PCI bridges guest this brings
down the boot time from 25s to 20s and reduces the amount of temporary FVs
allocated during machine constructon (~800000 -> ~640000) and amount of
temporary dispatch trees (~370000 -> ~300000), the total memory footprint
goes down (18G -> 17G).
Backports commit 202fc01b05572ecb258fdf4c5bd56cf6de8140c7 from qemu
Since FlatViews are shared now and ASes not, this gets rid of
address_space_init_shareable().
This should cause no behavioural change.
Backports commit b516572f31c0ea0937cd9d11d9bd72dd83809886 from qemu
This creates a new AS object without any FlatView as
memory_region_transaction_commit() may want to reuse the empty FV.
Backports commit 67ace39b253ed5ae465275bc870f7e495547658b from qemu
This allows sharing flat views between address spaces (AS) when
the same root memory region is used when creating a new address space.
This is done by walking through all ASes and caching one FlatView per
a physical root MR (i.e. not aliased).
This removes search for duplicates from address_space_init_shareable() as
FlatViews are shared elsewhere and keeping as::ref_count correct seems
an unnecessary and useless complication.
This should cause no change and memory use or boot time yet.
Backports commit 967dc9b1194a9281124b2e1ce67b6c3359a2138f from qemu
Address spaces get to keep a root MR (alias or not) but FlatView stores
the actual MR as this is going to be used later on to decide whether to
share a particular FlatView or not.
Backports commit 89c177bbdd6cf8e50b3fd4831697d50e195d6432 from qemu
This renames some helpers to reflect better what they do.
This should cause no behavioural change.
Backports commit 8629d3fcb77e9775e44d9051bad0fb5187925eae from qemu
We store AddressSpaceDispatch* in FlatView anyway so there is no need
to carry it from mem_add() to register_subpage/register_multipage.
This should cause no behavioural change.
Backports commit 9950322a593ff900a860fb52938159461798a831 from qemu
FlatView's will be shared between AddressSpace's and subpage_t
and MemoryRegionSection cannot store AS anymore, hence this change.
In particular, for:
typedef struct subpage_t {
MemoryRegion iomem;
- AddressSpace *as;
+ FlatView *fv;
hwaddr base;
uint16_t sub_section[];
} subpage_t;
struct MemoryRegionSection {
MemoryRegion *mr;
- AddressSpace *address_space;
+ FlatView *fv;
hwaddr offset_within_region;
Int128 size;
hwaddr offset_within_address_space;
bool readonly;
};
This should cause no behavioural change.
Backports commit 166206845f7fd75e720e6feea0bb01957c8da07f from qemu
AS in ASD is only used to pass AS from mem_begin() to register_subpage()
to store it in MemoryRegionSection, we can do this directly now.
This should cause no behavioural change.
Backports commit c7752523787dc148f5ee976162e80ab594c386a1 from qemu
As we are going to share FlatView's between AddressSpace's,
and AddressSpaceDispatch is a structure to perform quick lookup
in FlatView, this moves ASD to FlatView.
After previosly open coded ASD rendering, we can also remove
as->next_dispatch as the new FlatView pointer is stored
on a stack and set to an AS atomically.
flatview_destroy() is executed under RCU instead of
address_space_dispatch_free() now.
This makes mem_begin/mem_commit to work with ASD and mem_add with FV
as later on mem_add will be taking FV as an argument anyway.
This should cause no behavioural change.
Backports commit 66a6df1dc6d5b28cc3e65db0d71683fbdddc6b62 from qemu
machine_class_base_init() member name is allocated by
machine_class_base_init(), but not freed by
machine_class_finalize(). Simply freeing there doesn't work,
because DEFINE_PC_MACHINE() overwrites it with a literal string.
Fix DEFINE_PC_MACHINE() not to overwrite it, and add the missing
free to machine_class_finalize().
Backports commit 8ea753718b2d1a42e9ce7b8db9f5e4e1f330e827 from qemu
