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2020-12-10s390x: do not use ram_size globalPaolo Bonzini
Use the machine properties instead. Cc: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-04-29s390x: Add SIDA memory opsJanosch Frank
Protected guests save the instruction control blocks in the SIDA instead of QEMU/KVM directly accessing the guest's memory. Let's introduce new functions to access the SIDA. The memops for doing so are available with KVM_CAP_S390_PROTECTED, so let's check for that. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Message-Id: <20200319131921.2367-8-frankja@linux.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2020-02-20Remove unnecessary cast when using the address_space APIPhilippe Mathieu-Daudé
This commit was produced with the included Coccinelle script scripts/coccinelle/exec_rw_const. Two lines in hw/net/dp8393x.c that Coccinelle produced that were over 80 characters were re-wrapped by hand. Suggested-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-10-21s390x/mmu: Remove duplicate check for MMU_DATA_STOREDavid Hildenbrand
No need to double-check if we have a write. Found by Coverity (CID: 1406404). Fixes: 31b59419069e ("target/s390x: Return exception from mmu_translate_real") Cc: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20191017121922.18840-1-david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2019-10-09target/s390x: Remove ilen argument from trigger_pgm_exceptionRichard Henderson
All but one caller passes ILEN_UNWIND, which is not stored. For the one use case in s390_cpu_tlb_fill, set int_pgm_ilen directly, simply to avoid the assert within do_program_interrupt. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20191001171614.8405-18-richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09target/s390x: Remove ilen argument from trigger_access_exceptionRichard Henderson
The single caller passes ILEN_UNWIND; pass that along to trigger_pgm_exception directly. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20191001171614.8405-17-richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09target/s390x: Rely on unwinding in s390_cpu_virt_mem_rwRichard Henderson
For TCG, we will always call s390_cpu_virt_mem_handle_exc, which will go through the unwinder to set ILEN. For KVM, we do not go through do_program_interrupt, so this argument is unused. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20191001171614.8405-15-richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09target/s390x: Return exception from translate_pagesRichard Henderson
Do not raise the exception directly within translate_pages, but pass it back so that caller may do so. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20191001171614.8405-11-richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09target/s390x: Return exception from mmu_translateRichard Henderson
Do not raise the exception directly within mmu_translate, but pass it back so that caller may do so. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20191001171614.8405-10-richard.henderson@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09target/s390x: Remove exc argument to mmu_translate_asceRichard Henderson
Now that mmu_translate_asce returns the exception instead of raising it, the argument is unused. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20191001171614.8405-9-richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09target/s390x: Return exception from mmu_translate_realRichard Henderson
Do not raise the exception directly within mmu_translate_real, but pass it back so that caller may do so. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20191001171614.8405-8-richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09s390x/mmu: Implement Instruction-Execution-Protection FacilityDavid Hildenbrand
IEP support in the mmu is fairly easy. Set the right permissions for TLB entries and properly report an exception. Make sure to handle EDAT-2 by setting bit 56/60/61 of the TEID (TEC) to the right values. Let's keep s390_cpu_get_phys_page_debug() working even if IEP is active. Switch MMU_DATA_LOAD - this has no other effects any more as the ASC to be used is now fully selected outside of mmu_translate(). Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09s390x/mmu: Implement ESOP-2 and access-exception-fetch/store-indication facilityDavid Hildenbrand
We already implement ESOP-1. For ESOP-2, we only have to indicate all protection exceptions properly. Due to EDAT-1, we already indicate DAT exceptions properly. We don't trigger KCP/ALCP/IEP exceptions yet. So all we have to do is set the TEID (TEC) to the right values (bit 56, 60, 61) in case of LAP. We don't have any side-effects (e.g., no guarded-storage facility), therefore, bit 64 of the TEID (TEC) is always 0. We always have to indicate whether it is a fetch or a store for all access exceptions. This is only missing for LAP exceptions. Acked-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09s390x/mmu: Add EDAT2 translation supportDavid Hildenbrand
This only adds basic support to the DAT translation, but no EDAT2 support for TCG. E.g., the gdbstub under kvm uses this function, too, to translate virtual addresses. Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09s390x/mmu: Convert to non-recursive page table walkDavid Hildenbrand
A non-recursive implementation allows to make better use of the branch predictor, avoids function calls, and makes the implementation of new features only for a subset of region table levels easier. We can now directly compare our implementation to the KVM gaccess implementation in arch/s390/kvm/gaccess.c:guest_translate(). Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09s390x/mmu: DAT table definition overhaulDavid Hildenbrand
Let's use consistent names for the region/section/page table entries and for the macros to extract relevant parts from virtual address. Make them match the definitions in the PoP - e.g., how the relevant bits are actually called. Introduce defines for all bits declared in the PoP. This will come in handy in follow-up patches. Add a note where additional information about s390x and the used definitions can be found. Acked-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09s390x/mmu: Use TARGET_PAGE_MASK in mmu_translate_pte()David Hildenbrand
While ASCE_ORIGIN is not wrong, it is certainly confusing. We want a page frame address. Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09s390x/mmu: Inject PGM_ADDRESSING on bogus table addressesDavid Hildenbrand
Let's document how it works and inject PGM_ADDRESSING if reading of table entries fails. Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09s390x/mmu: Inject DAT exceptions from a single placeDavid Hildenbrand
Let's return the PGM from the translation functions on error and inject based on that. Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09s390x/mmu: Move DAT protection handling out of mmu_translate_asce()David Hildenbrand
We'll reuse the ilen and tec definitions in mmu_translate soon also for all other DAT exceptions we inject. Move it to the caller, where we can later pair it up with other protection checks, like IEP. Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-10-09s390x/mmu: Drop debug logging from MMU codeDavid Hildenbrand
Let's get it out of the way to make some further refactorings easier. Personally, I've never used these debug statements at all. And if I had to debug issues, I used plain GDB instead (debug prints are just way too much noise in the MMU). We might want to introduce tracing at some point instead, so we can able selected events on demand. Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
2019-08-22s390x/mmu: Factor out storage key handlingDavid Hildenbrand
Factor it out, add a comment how it all works, and also use it in the REAL MMU. Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20190816084708.602-7-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2019-08-22s390x/mmu: Better storage key reference and change bit handlingDavid Hildenbrand
Any access sets the reference bit. In case we have a read-fault, we should not allow writes to the TLB entry if the change bit was not already set. This is a preparation for proper storage-key reference/change bit handling in TCG and a fix for KVM whereby read accesses would set the change bit (old KVM versions without the ioctl to carry out the translation). Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20190816084708.602-6-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2019-08-22s390x/tcg: Rework MMU selection for instruction fetchesDavid Hildenbrand
Instructions are always fetched from primary address space, except when in home address mode. Perform the selection directly in cpu_mmu_index(). get_mem_index() is only used to perform data access, instructions are fetched via cpu_lduw_code(), which translates to cpu_mmu_index(env, true). We don't care about restricting the access permissions of the TLB entries anymore, as we no longer enter PRIMARY entries into the SECONDARY MMU. Cleanup related code a bit. Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Message-Id: <20190816084708.602-4-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2019-08-22s390x/mmu: Trace the right value if setting/getting the storage key failsDavid Hildenbrand
We want to trace the actual return value, not "0". Fixes: 0f5f669147b5 ("s390x: Enable new s390-storage-keys device") Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20190816084708.602-2-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2019-08-16Include hw/hw.h exactly where neededMarkus Armbruster
In my "build everything" tree, changing hw/hw.h triggers a recompile of some 2600 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h). The previous commits have left only the declaration of hw_error() in hw/hw.h. This permits dropping most of its inclusions. Touching it now recompiles less than 200 objects. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20190812052359.30071-19-armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-06-11qemu-common: Move tcg_enabled() etc. to sysemu/tcg.hMarkus Armbruster
Other accelerators have their own headers: sysemu/hax.h, sysemu/hvf.h, sysemu/kvm.h, sysemu/whpx.h. Only tcg_enabled() & friends sit in qemu-common.h. This necessitates inclusion of qemu-common.h into headers, which is against the rules spelled out in qemu-common.h's file comment. Move tcg_enabled() & friends into their own header sysemu/tcg.h, and adjust #include directives. Cc: Richard Henderson <rth@twiddle.net> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190523143508.25387-2-armbru@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> [Rebased with conflicts resolved automatically, except for accel/tcg/tcg-all.c]
2019-06-10target/s390x: Use env_cpu, env_archcpuRichard Henderson
Cleanup in the boilerplate that each target must define. Replace s390_env_get_cpu with env_archcpu. The combination CPU(s390_env_get_cpu) should have used ENV_GET_CPU to begin; use env_cpu now. Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-31Make address_space_access_valid() take a MemTxAttrs argumentPeter Maydell
As part of plumbing MemTxAttrs down to the IOMMU translate method, add MemTxAttrs as an argument to address_space_access_valid(). Its callers either have an attrs value to hand, or don't care and can use MEMTXATTRS_UNSPECIFIED. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180521140402.23318-6-peter.maydell@linaro.org
2018-04-09s390x/mmu: don't overwrite pending exception in mmu translateDavid Hildenbrand
If we already triggered another exception, don't overwrite it with a protection exception. Only applies to old KVM instances without the virtual memory access IOCTL in KVM. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180409113019.14568-2-david@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-03-08target/s390x: Remove leading underscores from #definesThomas Huth
We should not use leading underscores followed by a capital letter in #defines since such identifiers are reserved by the C standard. For ASCE_ORIGIN, REGION_ENTRY_ORIGIN and SEGMENT_ENTRY_ORIGIN I also added parentheses around the value to silence an error message from checkpatch.pl. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1520227018-4061-1-git-send-email-thuth@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-02-26s390x/tcg: fix disabling/enabling DATDavid Hildenbrand
Currently, all memory accesses go via the MMU of the address space (primary, secondary, ...). This is bad, because we don't flush the TLB when disabling/enabling DAT. So we could add a tlb flush. However it is easier to simply select the MMU we already have in place for real memory access. All we have to do is point at the right MMU and allow to execute these pages. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180213161240.19891-1-david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> [CH: get rid of tabs] Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-12-14s390x/tcg: don't exit the cpu loop in s390_cpu_virt_mem_rw()David Hildenbrand
s390_cpu_virt_mem_rw() must always return, so callers can react on an exception (e.g. see ioinst_handle_stcrw()). Therefore, using program_interrupt() is wrong. Fix that up. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20171130162744.25442-9-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-12-14s390x: handle exceptions during s390_cpu_virt_mem_rw() correctly (TCG)David Hildenbrand
s390_cpu_virt_mem_rw() must always return, so callers can react on an exception (e.g. see ioinst_handle_stcrw()). However, for TCG we always have to exit the cpu loop (and restore the cpu state before that) if we injected a program interrupt. So let's introduce and use s390_cpu_virt_mem_handle_exc() in code that is not purely KVM. Directly pass the retaddr we already have available in these functions. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20171130162744.25442-8-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-20s390x/tcg: low-address protection supportDavid Hildenbrand
This is a neat way to implement low address protection, whereby only the first 512 bytes of the first two pages (each 4096 bytes) of every address space are protected. Store a tec of 0 for the access exception, this is what is defined by Enhanced Suppression on Protection in case of a low address protection (Bit 61 set to 0, rest undefined). We have to make sure to to pass the access address, not the masked page address into mmu_translate*(). Drop the check from testblock. So we can properly test this via kvm-unit-tests. This will check every access going through one of the MMUs. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20171016202358.3633-3-david@redhat.com> [CH: restored error message for access register mode] Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06s390x/tcg: add MMU for real addressesDavid Hildenbrand
This makes it easy to access real addresses (prefix) and in addition checks for valid memory addresses, which is missing when using e.g. stl_phys(). We can later reuse it to implement low address protection checks (then we might even decide to introduce yet another MMU for absolute addresses, just for handling storage keys and low address protection). Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170926183318.12995-3-david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-08-30s390x/kvm: move KVM declarations and stubs to separate filesDavid Hildenbrand
Let's do it just like the other architectures. Introduce kvm-stub.c for stubs and kvm_s390x.h for the declarations. Change license to GPL2+ and keep copyright notice. As we are dropping the sysemu/kvm.h include from cpu.h, fix up includes. Suggested-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170818114353.13455-18-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-08-30target/s390x: introduce internal.hDavid Hildenbrand
cpu.h should only contain what really has to be accessed outside of target/s390x/. Add internal.h which can only be used inside target/s390x/. Move everything that isn't fast enough to run away and restructure it right away. We'll move all kvm_* stuff later. Minor style fixes to avoid checkpatch warning to: - struct Lowcore: "{" goes into same line as typedef - struct LowCore: add spaces around "-" in array length calculations - time2tod() and tod2time(): move "{" to separate line - get_per_atmid(): add space between ")" and "?". Move cases by one char. - get_per_atmid(): drop extra paremthesis around (1 << 6) Change license of new file to GPL2+ and keep copyright notice. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170818114353.13455-15-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-07-28target/s390x: fix pgm irq ilen in translate_pages()David Hildenbrand
0 is certainly wrong. Let's use ILEN_AUTO. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170721125609.11117-3-david@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-06-13target/s390x: rework PGM interrupt psw.addr handlingDavid Hildenbrand
We can tell from the program interrupt code, whether a program interrupt has to forward the address in the PGM new PSW (suppressing/terminated/completed) to point at the next instruction, or if it is nullifying and the PSW address does not have to be incremented. So let's not modify the PSW address outside of the injection path and handle this internally. We just have to handle instruction length auto detection if no valid instruction length can be provided. This should fix various program interrupt injection paths, where the PSW was not properly forwarded. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170609142156.18767-3-david@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: remove some Linux assumptions from IPTEAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170531220129.27724-3-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-06target/s390x: Add support for the TEST BLOCK instructionThomas Huth
TEST BLOCK was likely once used to execute basic memory tests, but nowadays it's just a (slow) way to clear a page. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1495128400-23759-1-git-send-email-thuth@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-12-20Move target-* CPU file into a target/ folderThomas Huth
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> [cris&microblaze part] Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part] Signed-off-by: Thomas Huth <thuth@redhat.com>
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