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We've currently got 18 architectures in QEMU, and thus 18 target-xxx
folders in the root folder of the QEMU source tree. More architectures
(e.g. RISC-V, AVR) are likely to be included soon, too, so the main
folder of the QEMU sources slowly gets quite overcrowded with the
target-xxx folders.
To disburden the main folder a little bit, let's move the target-xxx
folders into a dedicated target/ folder, so that target-xxx/ simply
becomes target/xxx/ instead.
Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part]
Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part]
Acked-by: Michael Walle <michael@walle.cc> [lm32 part]
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part]
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part]
Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part]
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part]
Acked-by: Richard Henderson <rth@twiddle.net> [alpha part]
Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part]
Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part]
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [crisµblaze part]
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part]
Signed-off-by: Thomas Huth <thuth@redhat.com>
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tlbie (BookS) and tlbivax (BookE) plus the H_CALLs(pseries) should have
a global effect.
Introduces TLB_NEED_GLOBAL_FLUSH flag. During lazy tlb flush, after
taking care of pending local flushes, check broadcast flush(at context
synchronizing event ptesync/tlbsync, etc) is needed. Depending on the
bitmask state of the tlb_need_flush, tlb is flushed from other cpus if
needed and the flags are cleared.
Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
[dwg: Use 'true' instead of '1' for call to check_tlb_flush()]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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We flush the qemu TLB lazily. check_tlb_flush is called whenever we hit
a context synchronizing event or instruction that requires a pending
flush to be performed.
However, we fail to handle broadcast TLB flush operations. In order to
fix that efficiently, we want to differentiate whether check_tlb_flush()
needs to only apply pending local flushes (isync instructions,
interrupts, ...) or also global pending flush operations. The latter is
only needed when executing instructions that are defined architecturally
as synchronizing global TLB flush operations. This in our case is
ptesync on BookS and tlbsync on BookE along with the paravirtualized
hypervisor calls.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
[dwg: Changed gen_check_tlb_flush() to also take a bool, and fixed
some spelling errors in commit message]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Introduces bit-flag in CPUPPCState::tlb_need_flush:
TLB_NEED_LOCAL_FLUSH (0x1) - Flush local tlb
This would indicate a pending local tlb flush (isync instructions,
interrupts, ...)
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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This is no longer necessary as the helpers will properly retrieve
the return address when needed.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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The patch adds CPU PVR definition for POWER9 and enables QEMU to launch
guests/linux-user in TCG mode.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
[ Added POWER9 alias, POWER9 SPAPR core and dropped MMU defines ]
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
[dwg: Dropped sPAPR core type again for now]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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There are functions tlb_fill(), cpu_unaligned_access() and
do_unaligned_access() that are called with access type and mmu index
arguments. But these arguments are named 'is_write' and 'is_user' in their
declarations. The patches fix the arguments to avoid a confusion.
Signed-off-by: Sergey Sorokin <afarallax@yandex.ru>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Message-id: 1465907177-1399402-1-git-send-email-afarallax@yandex.ru
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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This ports the existing 64-bit mechanism to 32-bit, thus series
of 64 tlbie's followed by a sync like some versions of Darwin
(ab)use will result in a single flush.
We apply a pending flush on any sync instruction though, as Darwin
doesn't use tlbsync on non-SMP systems.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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The processor only uses some bits of the address and invalidates an
entire congruence class. Some OSes such as Darwin and HelenOS take
advantage of this and occasionally invalidate the entire TLB by just
doing a series of 64 consecutive tlbie for example.
Our code tries to be too smart here only invalidating a segment
congruence class (ie, allowing more address bits to be relevant
in the invalidation), this fails miserably on those OSes.
Instead don't bother, do like ppc64 and blow the whole tlb when tlbie
is executed.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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This fixes compilation of mmu_helper.c when all of the debug #defines at
the start of the file are enabled.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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On ppc64 especially, we flush the tlb on any slbie or tlbie instruction.
However, those instructions often come in bursts of 3 or more (context
switch will favor a series of slbie's for example to an slbia if the
SLB has less than a certain number of entries in it, and tlbie's can
happen in a series, with PAPR, H_BULK_REMOVE can remove up to 4 entries
at a time.
Doing a tlb_flush() each time is a waste of time. We end up doing a memset
of the whole TLB, reloading it for the next instruction, memset'ing again,
etc...
Those instructions don't have to take effect immediately. For slbie, they
can wait for the next context synchronizing event. For tlbie, the next
tlbsync.
This implements batching by keeping a flag that indicates that we have a
TLB in need of flushing. We check it on interrupts, rfi's, isync's and
tlbsync and flush the TLB if needed.
This reduces the number of tlb_flush() on a boot to a ubuntu installer
first dialog screen from roughly 360K down to 36K.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[clg: added a 'CPUPPCState *' variable in h_remove() and
h_bulk_remove() ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
[dwg: removed spurious whitespace change, use 0/1 not true/false
consistently, since tlb_need_flush has int type]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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exec-all.h contains TCG-specific definitions. It is not needed outside
TCG-specific files such as translate.c, exec.c or *helper.c.
One generic function had snuck into include/exec/exec-all.h; move it to
include/qom/cpu.h.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the
Error typedef. Since then, we've moved to include qemu/osdep.h
everywhere. Its file comment explains: "To avoid getting into
possible circular include dependencies, this file should not include
any other QEMU headers, with the exceptions of config-host.h,
compiler.h, os-posix.h and os-win32.h, all of which are doing a
similar job to this file and are under similar constraints."
qapi/error.h doesn't do a similar job, and it doesn't adhere to
similar constraints: it includes qapi-types.h. That's in excess of
100KiB of crap most .c files don't actually need.
Add the typedef to qemu/typedefs.h, and include that instead of
qapi/error.h. Include qapi/error.h in .c files that need it and don't
get it now. Include qapi-types.h in qom/object.h for uint16List.
Update scripts/clean-includes accordingly. Update it further to match
reality: replace config.h by config-target.h, add sysemu/os-posix.h,
sysemu/os-win32.h. Update the list of includes in the qemu/osdep.h
comment quoted above similarly.
This reduces the number of objects depending on qapi/error.h from "all
of them" to less than a third. Unfortunately, the number depending on
qapi-types.h shrinks only a little. More work is needed for that one.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
[Fix compilation without the spice devel packages. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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When a Power cpu with 64-bit hash MMU has it's hash page table (HPT)
pointer updated by a write to the SDR1 register we need to update some
derived variables. Likewise, when the cpu is configured for an external
HPT (one not in the guest memory space) some derived variables need to be
updated.
Currently the logic for this is (partially) duplicated in ppc_store_sdr1()
and in spapr_cpu_reset(). In future we're going to need it in some other
places, so make some common helpers for this update.
In addition the new ppc_hash64_set_external_hpt() helper also updates
SDR1 in KVM - it's not updated by the normal runtime KVM <-> qemu CPU
synchronization. In a sense this belongs logically in the
ppc_hash64_set_sdr1() helper, but that is called from
kvm_arch_get_registers() so can't itself call cpu_synchronize_state()
without infinite recursion. In practice this doesn't matter because
the only other caller is TCG specific.
Currently there aren't situations where updating SDR1 at runtime in KVM
matters, but there are going to be in future.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
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Split the bits that require it to exec/log.h.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-id: 1452174932-28657-8-git-send-email-den@openvz.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Currently both the tlbiva instruction (used on 44x chips) and the tlbie
instruction (used on hash MMU chips) are both handled via
ppc_tlb_invalidate_one(). This is silly, because they're invoked from
different places, and do different things.
Clean this up by separating out the tlbiva instruction into its own
handling. In fact the implementation is only a stub anyway.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Alexander Graf <agraf@suse.de>
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ppc_tlb_invalidate_one() has a big switch handling many different MMU
types. However, most of those branches can never be reached:
It is called from 3 places: from remove_hpte() and h_protect() in
spapr_hcall.c (which always has a 64-bit hash MMU type), and from
helper_tlbie() in mmu_helper.c.
Calls to helper_tlbie() are generated from gen_tlbiel, gen_tlbiel and
gen_tlbiva. The first two are only used with the PPC_MEM_TLBIE flag,
set only with 32-bit or 64-bit hash MMU models, and gen_tlbiva() is
used only on 440 and 460 models with the BookE mmu model.
These means the exhaustive list of MMU types which may call
ppc_tlb_invalidate_one() is: POWERPC_MMU_SOFT_6xx, POWERPC_MMU_601,
POWERPC_MMU_32B, POWERPC_MMU_SOFT_74xx, POWERPC_MMU_64B, POWERPC_MMU_2_03,
POWERPC_MMU_2_06, POWERPC_MMU_2_07 and POWERPC_MMU_BOOKE.
Clean up by removing logic for all other MMU types from
ppc_tlb_invalidate_one().
This means that ppc4xx_tlb_invalidate_virt() now has no callers, or rather,
makes it obvious that it has no callers. So, we remove that function as
well.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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ppc_store_slb updates the SLB for PPC cpus with 64-bit hash MMUs.
Currently it takes two parameters, which contain values encoded as the
register arguments to the slbmte instruction, one register contains the
ESID portion of the SLBE and also the slot number, the other contains the
VSID portion of the SLBE.
We're shortly going to want to do some SLB updates from other code where
it is more convenient to supply the slot number and ESID separately, so
rework this function and its callers to work this way.
As a bonus, this slightly simplifies the emulation of segment registers for
when running a 32-bit OS on a 64-bit CPU.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Alexander Graf <agraf@suse.de>
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Like a lot of places these files include a mixture of functions taking
both the older CPUPPCState *env and newer PowerPCCPU *cpu. Move a step
closer to cleaning this up by standardizing on PowerPCCPU, except for the
helper_* functions which are called with the CPUPPCState * from tcg.
Callers and some related functions are updated as well, the boundaries of
what's changed here are a bit arbitrary.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
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Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.
This commit was created with scripts/clean-includes.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1453832250-766-6-git-send-email-peter.maydell@linaro.org
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Avoid "naked" qemu_log, bring documentation for DEBUG #defines
up to date.
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Commit aa4bb5875231 (ppc: Add mmu_model defines for arch 2.03 and 2.07)
removed the mmu_model definition POWERPC_MMU_2_06a which is needed by
PR KVM. Reintroduce it and also add POWERPC_MMU_2_07a.
This fixes QEMU crash (qemu: fatal: Unknown MMU model) during booting
of PR KVM guest.
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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This removes unused POWERPC_MMU_2_06a/POWERPC_MMU_2_06d.
This replaces POWERPC_MMU_64B with POWERPC_MMU_2_03 for POWER5+ to be
more explicit about the version of the PowerISA supported.
This defines POWERPC_MMU_2_07 and uses it for the POWER8 CPU family.
This will not have an immediate effect now but it will in the following
patch.
This should cause no behavioural change.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[aik: rebased, changed commit log]
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Otherwise when cpu_post_load calls ppc_store_sdr1() when restoring a VM
snapshot the value is deemed unchanged and so the internal env->htab*
variables aren't set correctly.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
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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.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Acked-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-id: 1418489298-1184-1-git-send-email-antonynpavlov@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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We were truncating physical addresses to 32bit when using qemu-system-ppc
with a booke206 TLB implementation. This patch fixes that and makes the full
address space available.
Signed-off-by: Alexander Graf <agraf@suse.de>
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When we run 32bit guest CPUs (or 32bit guest code on 64bit CPUs) on
qemu-system-ppc64 the TLB lookup will use the full effective address
as pointer.
However, only the first 32bits are valid when MSR.CM = 0. Check for
that condition.
This makes QEMU boot an e500v2 guest with more than 1G of RAM for me.
Signed-off-by: Alexander Graf <agraf@suse.de>
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A "mtspr SPRMMUCSR0, reg" always flushed TLB0,
because it passed the SPR number 0x3f4 to the flush routine.
But we want to flush either TLB0 or TBL1 depending on the GPR value.
Signed-off-by: Alex Zuepke <alexander.zuepke@hs-rm.de>
[agraf: change subject line, fix TCGv size mismatch]
Signed-off-by: Alexander Graf <agraf@suse.de>
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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>
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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>
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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>
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Signed-off-by: Andreas Färber <afaerber@suse.de>
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Signed-off-by: Andreas Färber <afaerber@suse.de>
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Signed-off-by: Andreas Färber <afaerber@suse.de>
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Signed-off-by: Andreas Färber <afaerber@suse.de>
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Signed-off-by: Andreas Färber <afaerber@suse.de>
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This lets us drop some local variables in tlb_fill() functions.
Signed-off-by: Andreas Färber <afaerber@suse.de>
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Signed-off-by: Andreas Färber <afaerber@suse.de>
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Signed-off-by: Andreas Färber <afaerber@suse.de>
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Correctly update the htab_mask using the return value of
KVM_PPC_ALLOCATE_HTAB ioctl. Also we don't update sdr1
on GET_SREGS for HV. We check for external htab and if
found true, we don't need to update sdr1
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
[ fixed pte group offset computation in ppc_hash64_htab_lookup() that
caused TCG to fail, Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
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* 'tcg-next' of git://github.com/rth7680/qemu: (29 commits)
tcg-i386: Make use of zero-extended memory helper routines
tcg: Introduce zero and sign-extended versions of load helpers
exec: Split softmmu_defs.h
target: Include softmmu_exec.h where forgotten
exec: Rename USUFFIX to LSUFFIX
tcg-i386: Don't perform GETPC adjustment in TCG code
exec: Reorganize the GETRA/GETPC macros
configure: Allow x32 as a host
tcg-i386: Adjust tcg_out_tlb_load for x32
tcg-i386: Use intptr_t appropriately
tcg: Fix jit debug for x32
tcg: Use appropriate types in tcg_reg_alloc_call
tcg: Change tcg_out_ld/st offset to intptr_t
tcg: Change tcg_gen_exit_tb argument to uintptr_t
tcg: Use uintptr_t in TCGHelperInfo
tcg: Change relocation offsets to intptr_t
tcg: Change memory offsets to intptr_t
tcg: Change frame pointer offsets to intptr_t
tcg: Define TCG_ptr properly
tcg: Define TCG_TYPE_PTR properly
...
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Several targets forgot to include softmmu_exec.h, which would
break them with a header cleanup to follow.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
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Use SLB_ESID_V instead of (1 << 27) in the code
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
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Change breakpoint_invalidate() argument to CPUState alongside.
Since all targets now assign a softmmu-only field, we can drop helpers
cpu_class_set_{do_unassigned_access,vmsd}() and device_class_set_vmsd().
Prepares for changing cpu_memory_rw_debug() argument to CPUState.
Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa)
Signed-off-by: Andreas Färber <afaerber@suse.de>
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Choose CPUState rather than PowerPCCPU since doing a CPU() cast on the
macro argument would hide type mismatches.
Signed-off-by: Andreas Färber <afaerber@suse.de>
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Since commit 878096eeb278a8ac1ccd6667af73e026f29b4cf5 (cpu: Turn
cpu_dump_{state,statistics}() into CPUState hooks) CPUArchState is no
longer needed.
Add documentation and make the functions available through qemu/log.h
outside NEED_CPU_H to allow use in qom/cpu.c. Moving them to qom/cpu.h
was not yet possible due to convoluted include paths, so that some
devices grow an implicit and unneeded dependency on qom/cpu.h for now.
Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Reviewed-by: Richard Henderson <rth@twiddle.net>
[AF: Simplified mb_cpu_do_interrupt() and do_interrupt_all() changes]
Signed-off-by: Andreas Färber <afaerber@suse.de>
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Commit b632a148b677b773ff155f9de840b37a653567b9 (target-ppc: QOM method
dispatch for MMU fault handling) introduced a use of ENV_GET_CPU()
inside target-ppc/ code. Use ppc_env_get_cpu() instead.
Purely cosmetic, non-functional change to aid in locating and removing
ENV_GET_CPU() usages.
Signed-off-by: Andreas Färber <afaerber@suse.de>
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On PPC 6xx, data and code have separated TLBs. Until now QEMU was only
looking at data TLBs, which is not good when GDB wants to read code.
This patch adds a second call to get_physical_address() with an
ACCESS_CODE type of access when the first call with ACCESS_INT fails.
Signed-off-by: Fabien Chouteau <chouteau@adacore.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
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"(qemu) info tlb" is a very useful tool for debugging, so I implemented
the missing 6xx version.
Signed-off-by: Fabien Chouteau <chouteau@adacore.com>
[agraf: fix printfs on hwaddr to PRI]
Signed-off-by: Alexander Graf <agraf@suse.de>
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