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2024-12-20accel/tcg: Move tcg_cflags_has/set() to 'exec/translation-block.h'Philippe Mathieu-Daudé1-3/+0
The TranslationBlock flags are defined in 'exec/translation-block.h'. tcg_cflags_has/set() use them, it is more logical to declare them in the same place. Move them there too. Suggested-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20241212144430.66224-2-philmd@linaro.org>
2024-12-20accel/tcg: Restrict curr_cflags() declaration to 'internal-common.h'Philippe Mathieu-Daudé1-3/+0
curr_cflags() is only used within accel/tcg/, move its declaration to accel/tcg/internal-common.h. Suggested-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20241216214030.59393-1-philmd@linaro.org>
2024-12-20accel/tcg: Declare cpu_loop_exit_requested() in 'exec/cpu-common.h'Philippe Mathieu-Daudé1-0/+18
Move cpu_loop_exit_requested() declaration to "exec/cpu-common.h", along with the related cpu_loop_exit_noexc(), cpu_loop_exit(), cpu_loop_exit_atomic() and cpu_loop_exit_restore() methods. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20241217140648.98538-1-philmd@linaro.org>
2024-10-13include/exec: Introduce env_cpu_const()Ilya Leoshkevich1-1/+12
It's the same as env_cpu(), but for const objects. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20240912093012.402366-2-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-07-26cpu-common.c: export cpu_get_free_index to be reused laterHarsh Prateek Bora1-0/+2
This helper provides an easy way to identify the next available free cpu index which can be used for vcpu creation. Until now, this is being called at a very later stage and there is a need to be able to call it earlier (for now, with ppc64) hence the need to export. Suggested-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
2024-07-22physmem: Add helper function to destroy CPU AddressSpaceSalil Mehta1-0/+8
Virtual CPU Hot-unplug leads to unrealization of a CPU object. This also involves destruction of the CPU AddressSpace. Add common function to help destroy the CPU AddressSpace. Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Tested-by: Vishnu Pajjuri <vishnu@os.amperecomputing.com> Reviewed-by: Gavin Shan <gshan@redhat.com> Tested-by: Xianglai Li <lixianglai@loongson.cn> Tested-by: Miguel Luis <miguel.luis@oracle.com> Reviewed-by: Shaoqin Huang <shahuang@redhat.com> Tested-by: Zhao Liu <zhao1.liu@intel.com> Acked-by: Igor Mammedov <imammedo@redhat.com> Message-Id: <20240716111502.202344-7-salil.mehta@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2024-05-08system/physmem: Propagate AddressSpace to MapClient helpersMattias Nissler1-2/+0
Propagate AddressSpace handler to following helpers: - register_map_client() - unregister_map_client() - notify_map_clients[_locked]() Rename them using 'address_space_' prefix instead of 'cpu_'. The AddressSpace argument will be used in the next commit. Reviewed-by: Peter Xu <peterx@redhat.com> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Mattias Nissler <mnissler@rivosinc.com> Message-ID: <20240507094210.300566-2-mnissler@rivosinc.com> [PMD: Split patch, part 1/2] Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-05-06accel/tcg: Access tcg_cflags with getter / setterPhilippe Mathieu-Daudé1-0/+7
Access the CPUState::tcg_cflags via tcg_cflags_has() and tcg_cflags_set() helpers. Mechanical change using the following Coccinelle spatch script: @@ expression cpu; expression flags; @@ - cpu->tcg_cflags & flags + tcg_cflags_has(cpu, flags) @@ expression cpu; expression flags; @@ - (tcg_cflags_has(cpu, flags)) + tcg_cflags_has(cpu, flags) @@ expression cpu; expression flags; @@ - cpu->tcg_cflags |= flags; + tcg_cflags_set(cpu, flags); Then manually moving the declarations, and adding both tcg_cflags_has() and tcg_cflags_set() definitions. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240427155714.53669-15-philmd@linaro.org>
2024-05-06exec/cpu: Extract page-protection definitions to page-protection.hPhilippe Mathieu-Daudé1-30/+1
Extract page-protection definitions from "exec/cpu-all.h" to "exec/page-protection.h". The list of files requiring the new header was generated using: $ git grep -wE \ 'PAGE_(READ|WRITE|EXEC|RWX|VALID|ANON|RESERVED|TARGET_.|PASSTHROUGH)' Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Acked-by: Nicholas Piggin <npiggin@gmail.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240427155714.53669-3-philmd@linaro.org>
2024-05-06exec/cpu: Rename PAGE_BITS macro to PAGE_RWXBALATON Zoltan1-1/+1
This macro can be used to abbreviate PAGE_READ | PAGE_WRITE | PAGE_EXEC for which PAGE_RWX is a better name and renaming it also shows it is not related to TARGET_PAGE_BITS. Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20240505121008.44A0D4E602D@zero.eik.bme.hu> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-05-03exec: Include missing license in 'exec/cpu-common.h'Philippe Mathieu-Daudé1-2/+7
Commit 1ad2134f91 ("Hardware convenience library") extracted "cpu-common.h" from "cpu-all.h", which uses the LGPL-2.1+ license. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240427155714.53669-5-philmd@linaro.org>
2024-04-23physmem: Introduce ram_block_discard_guest_memfd_range()Xiaoyao Li1-0/+2
When memory page is converted from private to shared, the original private memory is back'ed by guest_memfd. Introduce ram_block_discard_guest_memfd_range() for discarding memory in guest_memfd. Based on a patch by Isaku Yamahata <isaku.yamahata@intel.com>. Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Michael Roth <michael.roth@amd.com> Message-ID: <20240320083945.991426-12-michael.roth@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-02-29cpu: Remove page_size_initRichard Henderson1-7/+0
Move qemu_host_page_{size,mask} and HOST_PAGE_ALIGN into bsd-user. It should be removed from bsd-user as well, but defer that cleanup. Reviewed-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: Ilya Leoshkevich <iii@linux.ibm.com> Acked-by: Helge Deller <deller@gmx.de> Message-Id: <20240102015808.132373-28-richard.henderson@linaro.org>
2024-02-03include/exec: Change cpu_mmu_index argument to CPUStateRichard Henderson1-2/+1
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-02-03include/exec: Implement cpu_mmu_index genericallyRichard Henderson1-0/+22
For user-only mode, use MMU_USER_IDX. For system mode, use CPUClass.mmu_index. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-01-29include/exec: Move cpu_*()/cpu_env() to common headerAnton Johansson1-0/+26
Functions are target independent. Signed-off-by: Anton Johansson <anjo@rev.ng> Message-Id: <20240119144024.14289-17-anjo@rev.ng> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-01-29include/exec: Move PAGE_* macros to common headerAnton Johansson1-0/+30
These don't vary across targets and are used in soon-to-be common code (cputlb.c). Signed-off-by: Anton Johansson <anjo@rev.ng> Message-Id: <20240119144024.14289-15-anjo@rev.ng> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-01-29include/exec: Move vaddr defines to separate fileAnton Johansson1-12/+1
Needed to work around circular includes. vaddr is currently defined in cpu-common.h and needed by hw/core/cpu.h, but cpu-common.h also need cpu.h to know the size of the CPUState. [Maybe we can instead move parts of cpu-common.h w. hw/core/cpu.h to sort out the circular inclusion.] Signed-off-by: Anton Johansson <anjo@rev.ng> Message-Id: <20240119144024.14289-7-anjo@rev.ng> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> [rth: Add include of vaddr.h into cpu-common.h] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-01-08Replace "iothread lock" with "BQL" in commentsStefan Hajnoczi1-1/+1
The term "iothread lock" is obsolete. The APIs use Big QEMU Lock (BQL) in their names. Update the code comments to use "BQL" instead of "iothread lock". Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Paul Durrant <paul@xen.org> Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com> Message-id: 20240102153529.486531-5-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-11-07accel/tcg: Factor tcg_cpu_reset_hold() outPhilippe Mathieu-Daudé1-2/+0
Factor the TCG specific code from cpu_common_reset_hold() to tcg_cpu_reset_hold() within tcg-accel-ops.c. Since this file is sysemu specific, we can inline tcg_flush_softmmu_tlb(), removing its declaration in "exec/cpu-common.h". Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Anton Johansson <anjo@rev.ng> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230918104153.24433-4-philmd@linaro.org>
2023-11-07accel/tcg: Declare tcg_flush_jmp_cache() in 'exec/tb-flush.h'Philippe Mathieu-Daudé1-1/+0
"exec/cpu-common.h" is meant to contain the declarations related to CPU usable with any accelerator / target combination. tcg_flush_jmp_cache() is specific to TCG, so restrict its declaration by moving it to "exec/tb-flush.h". Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Anton Johansson <anjo@rev.ng> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230918104153.24433-2-philmd@linaro.org>
2023-10-12softmmu/physmem: Fixup qemu_ram_block_from_host() documentationDavid Hildenbrand1-0/+15
Let's fixup the documentation (e.g., removing traces of the ram_addr parameter that no longer exists) and move it to the header file while at it. Message-ID: <20230926185738.277351-4-david@redhat.com> Suggested-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
2023-10-04exec: Move cpu_loop_foo() target agnostic functions to 'cpu-common.h'Philippe Mathieu-Daudé1-0/+32
While these functions are not TCG specific, they are not target specific. Move them to "exec/cpu-common.h" so their callers don't have to be tainted as target specific. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Anton Johansson <anjo@rev.ng> Message-Id: <20230914185718.76241-3-philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-04exec: Make EXCP_FOO definitions target agnosticPhilippe Mathieu-Daudé1-0/+7
The EXCP_* definitions don't need to be target specific, move them to "exec/cpu-common.h". Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Anton Johansson <anjo@rev.ng> Message-Id: <20230914185718.76241-2-philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-29softmmu: Use async_run_on_cpu in tcg_commitRichard Henderson1-1/+0
After system startup, run the update to memory_dispatch and the tlb_flush on the cpu. This eliminates a race, wherein a running cpu sees the memory_dispatch change but has not yet seen the tlb_flush. Since the update now happens on the cpu, we need not use qatomic_rcu_read to protect the read of memory_dispatch. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1826 Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1834 Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1846 Tested-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-06-13exec/memory: Introduce RAM_NAMED_FILE flagSteve Sistare1-0/+1
migrate_ignore_shared() is an optimization that avoids copying memory that is visible and can be mapped on the target. However, a memory-backend-ram or a memory-backend-memfd block with the RAM_SHARED flag set is not migrated when migrate_ignore_shared() is true. This is wrong, because the block has no named backing store, and its contents will be lost. To fix, ignore shared memory iff it is a named file. Define a new flag RAM_NAMED_FILE to distinguish this case. Signed-off-by: Steve Sistare <steven.sistare@oracle.com> Reviewed-by: Peter Xu <peterx@redhat.com> Message-Id: <1686151116-253260-1-git-send-email-steven.sistare@oracle.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2023-05-11cpu: expose qemu_cpu_list_lock for lock-guard useJamie Iles1-0/+1
Expose qemu_cpu_list_lock globally so that we can use WITH_QEMU_LOCK_GUARD and QEMU_LOCK_GUARD to simplify a few code paths now and in future. Signed-off-by: Jamie Iles <quic_jiles@quicinc.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230427020925.51003-2-quic_jiles@quicinc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-05-02accel/tcg: Use one_insn_per_tb global instead of old singlestep globalPeter Maydell1-2/+0
The only place left that looks at the old 'singlestep' global variable is the TCG curr_cflags() function. Replace the old global with a new 'one_insn_per_tb' which is defined in tcg-all.c and declared in accel/tcg/internal.h. This keeps it restricted to the TCG code, unlike 'singlestep' which was available to every file in the system and defined in multiple different places for softmmu vs linux-user vs bsd-user. While we're making this change, use qatomic_read() and qatomic_set() on the accesses to the new global, because TCG will read it without holding a lock. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20230417164041.684562-4-peter.maydell@linaro.org
2023-04-20cpu: Remove parameter of list_cpus()Thomas Huth1-1/+1
The "optarg" parameter is completely unused, so let's drop it. Message-Id: <20230419124831.678079-1-thuth@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-10-26exec/cpu-common: add qemu_ram_get_fd()Stefan Hajnoczi1-0/+1
Add a function to get the file descriptor for a RAMBlock. Device emulation code typically uses the MemoryRegion APIs but vhost-style code may use RAMBlock directly for sharing guest memory with another process. This new API will be used by the libblkio block driver so it can share guest memory via .bdrv_register_buf(). Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20221013185908.1297568-11-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-10-04include/hw/core: Create struct CPUJumpCacheRichard Henderson1-0/+1
Wrap the bare TranslationBlock pointer into a structure. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-09-06accel/tcg: Move qemu_ram_addr_from_host_nofail to physmem.cRichard Henderson1-0/+1
The base qemu_ram_addr_from_host function is already in softmmu/physmem.c; move the nofail version to be adjacent. Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Tested-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-20cpus: Introduce cpu_list_generation_idHyman Huang(黄勇)1-0/+1
Introduce cpu_list_generation_id to track cpu list generation so that cpu hotplug/unplug can be detected during measurement of dirty page rate. cpu_list_generation_id could be used to detect changes of cpu list, which is prepared for dirty page rate measurement. Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn> Reviewed-by: Peter Xu <peterx@redhat.com> Message-Id: <06e1f1362b2501a471dce796abb065b04f320fa5.1656177590.git.huangy81@chinatelecom.cn> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2022-04-06include: move cpu_exec* declarations to cpu-common.hMarc-André Lureau1-0/+3
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20220323155743.1585078-23-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-06Replace qemu_real_host_page variables with inlined functionsMarc-André Lureau1-1/+1
Replace the global variables with inlined helper functions. getpagesize() is very likely annotated with a "const" function attribute (at least with glibc), and thus optimization should apply even better. This avoids the need for a constructor initialization too. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20220323155743.1585078-12-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-06Replace config-time define HOST_WORDS_BIGENDIANMarc-André Lureau1-1/+1
Replace a config-time define with a compile time condition define (compatible with clang and gcc) that must be declared prior to its usage. This avoids having a global configure time define, but also prevents from bad usage, if the config header wasn't included before. This can help to make some code independent from qemu too. gcc supports __BYTE_ORDER__ from about 4.6 and clang from 3.2. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> [ For the s390x parts I'm involved in ] Acked-by: Halil Pasic <pasic@linux.ibm.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220323155743.1585078-7-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-03-16softmmu: List CPU types againPhilippe Mathieu-Daudé1-0/+2
Commit e0220bb5b2 made cpus.c target-agnostic but didn't notice the cpu_list() function is only defined in target-specific code in "cpu.h". Move list_cpus() declaration to "exec/cpu-common.h" because this function is not softmmu-specific and can also be used by user-mode, along with moving its implementation to cpu.c, which is compiled per target. Fixes: e0220bb5b2 ("softmmu: Build target-agnostic objects once") Reported-by: Max Filippov <jcmvbkbc@gmail.com> Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220314140108.26222-1-philippe.mathieu.daude@gmail.com> Tested-by: Max Filippov <jcmvbkbc@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-03-06exec/cpu: Make address_space_init/reloading_memory_map target agnosticPhilippe Mathieu-Daudé1-0/+23
cpu_address_space_init() and cpu_reloading_memory_map() are target-agnostic, but are declared in "exec/exec-all.h" which contains target-specific declarations. Any target-agnostic source including "exec/exec-all.h" becomes target-specific and we have to compile it N times for the N targets built. In order to avoid that, move the declarations to "exec/cpu-common.h" which only contains target-agnostic declarations. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220207075426.81934-20-f4bug@amsat.org>
2022-03-06exec: Make cpu_memory_rw_debug() target agnosticPhilippe Mathieu-Daudé1-0/+4
cpu_memory_rw_debug() is declared in "exec/cpu-all.h" which contains target-specific declarations. To be able to use it from target agnostic source, move the declaration to the generic "exec/cpu-common.h" header. Replace the target-specific 'target_ulong' type by 'vaddr' which better reflects the argument type, and is target agnostic. Suggested-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220207075426.81934-5-f4bug@amsat.org>
2022-03-06exec: Declare vaddr as a generic target-agnostic typePhilippe Mathieu-Daudé1-0/+12
Move vaddr type declaration to the generic "exec/cpu-common.h" header. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220207075426.81934-4-f4bug@amsat.org>
2022-01-27exec/cpu: Make host pages variables / macros 'target agnostic'Philippe Mathieu-Daudé1-0/+9
"host" pages are related to the *host* not the *target*, thus the qemu_host_page_size / qemu_host_page_mask variables and the HOST_PAGE_ALIGN() / REAL_HOST_PAGE_ALIGN() macros can be moved to "exec/cpu-common.h" which is target agnostic. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: David Hildenbrand <david@redhat.com> Message-Id: <20220120000836.229419-1-f4bug@amsat.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-15memory: Introduce RAM_NORESERVE and wire it up in qemu_ram_mmap()David Hildenbrand1-0/+1
Let's introduce RAM_NORESERVE, allowing mmap'ing with MAP_NORESERVE. The new flag has the following semantics: " RAM is mmap-ed with MAP_NORESERVE. When set, reserving swap space (or huge pages if applicable) is skipped: will bail out if not supported. When not set, the OS will do the reservation, if supported for the memory type. " Allow passing it into: - memory_region_init_ram_nomigrate() - memory_region_init_resizeable_ram() - memory_region_init_ram_from_file() ... and teach qemu_ram_mmap() and qemu_anon_ram_alloc() about the flag. Bail out if the flag is not supported, which is the case right now for both, POSIX and win32. We will add Linux support next and allow specifying RAM_NORESERVE via memory backends. The target use case is virtio-mem, which dynamically exposes memory inside a large, sparse memory area to the VM. Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Acked-by: Eduardo Habkost <ehabkost@redhat.com> for memory backend and machine core Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20210510114328.21835-9-david@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-05-13util: vfio-helpers: Factor out and fix processing of existing ram blocksDavid Hildenbrand1-0/+1
Factor it out into common code when a new notifier is registered, just as done with the memory region notifier. This keeps logic about how to process existing ram blocks at a central place. Just like when adding a new ram block, we have to register the max_length. Ram blocks are only "fake resized". All memory (max_length) is mapped. Print the warning from inside qemu_vfio_ram_block_added(). Reviewed-by: Peter Xu <peterx@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20210429112708.12291-2-david@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2020-12-15vl: extract softmmu/globals.cPaolo Bonzini1-0/+3
Reviewed-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-12-10make ram_size local to vl.cPaolo Bonzini1-2/+0
Use the machine properties for the leftovers too. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-12exec: split out non-softmmu-specific partsPaolo Bonzini1-0/+3
Over the years, most parts of exec.c that were not specific to softmmu have been moved to accel/tcg; what's left is mostly the low-level part of the memory API, which includes RAMBlock and AddressSpaceDispatch. However exec.c also hosts 4-500 lines of code for the target specific parts of the CPU QOM object, plus a few functions for user-mode emulation that do not have a better place (they are not TCG-specific so accel/tcg/user-exec.c is not a good place either). Move these parts to a new file, so that exec.c can be moved to softmmu/physmem.c. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-12exec/cpu-common: Move MUSB specific typedefs to 'hw/usb/hcd-musb.h'Philippe Mathieu-Daudé1-3/+0
The CPUReadMemoryFunc/CPUWriteMemoryFunc typedefs are legacy remnant from before the conversion to MemoryRegions. Since they are now only used in tusb6010.c and hcd-musb.c, move them to "hw/usb/musb.h" and rename them appropriately. Suggested-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200601141536.15192-4-f4bug@amsat.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-02-20Let cpu_[physical]_memory() calls pass a boolean 'is_write' argumentPhilippe Mathieu-Daudé1-2/+2
Use an explicit boolean type. This commit was produced with the included Coccinelle script scripts/coccinelle/exec_rw_const. Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-02-20exec: Let cpu_[physical]_memory API use a boolean 'is_write' argumentPhilippe Mathieu-Daudé1-3/+3
The 'is_write' argument is either 0 or 1. Convert it to a boolean type. Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-02-20exec: Let the cpu_[physical]_memory API use void pointer argumentsPhilippe Mathieu-Daudé1-1/+1
As we are only dealing with a blob buffer, use a void pointer argument. This will let us simplify other APIs. Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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