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Tsirkin" , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Eduardo Habkost , Marcel Apfelbaum , Mohamed Mediouni , Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Ani Sinha Subject: [PATCH v3 03/14] whpx: reshuffle common code Date: Sat, 2 Aug 2025 10:17:49 +0200 Message-Id: <20250802081800.76030-4-mohamed@unpredictable.fr> X-Mailer: git-send-email 2.39.5 (Apple Git-154) In-Reply-To: <20250802081800.76030-1-mohamed@unpredictable.fr> References: <20250802081800.76030-1-mohamed@unpredictable.fr> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-GUID: pG4FGUwgQ3snMRRAMQi6lr8iX3o-TWPb X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODAyMDA3MCBTYWx0ZWRfX36B4jaHvRhcp QGxGOr/p8RsDyf1bSxXplQ5UffiL+Jc83Nu6Rir3oHHjP6JDo7AavLTZtIL5QOSgcH0RiT79dkM UNFJsA1F+N0O+SQYY6yLXvaC0v5qIgiEYadiAlIcYy8yMIijI7POACFQtMIWu7rwtHjd/tNKmHZ h/Nw7qdkEpCFWHoJVzYCLG69UxPgIc7aHgOSnaTHqi9eEIdBgvwjKFLJCWCz6IhJ1nGxCkA3HSV uJPbSmhCgqmqQcFAk0Fm0UPJ6oKftFq3BWxea7i4vu/ObKKaOVWNcfy4XdZyg8kNBotN4Jcdw= X-Proofpoint-ORIG-GUID: pG4FGUwgQ3snMRRAMQi6lr8iX3o-TWPb X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-01_08,2025-08-01_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxscore=0 mlxlogscore=999 clxscore=1030 spamscore=0 bulkscore=0 adultscore=0 suspectscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.22.0-2506270000 definitions=main-2508020070 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=57.103.87.35; envelope-from=mohamed@unpredictable.fr; helo=outbound.qs.icloud.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @unpredictable.fr) X-ZM-MESSAGEID: 1754122841858124100 Content-Type: text/plain; charset="utf-8" Some code can be shared between x86_64 and arm64 WHPX. Do so as much as rea= sonable. Signed-off-by: Mohamed Mediouni --- MAINTAINERS | 2 + accel/whpx/meson.build | 1 + accel/whpx/whpx-common.c | 564 ++++++++++++++++++ include/system/whpx-accel-ops.h | 4 +- include/system/whpx-all.h | 12 + include/system/whpx-common.h | 21 + .../whpx =3D> include/system}/whpx-internal.h | 6 +- target/i386/whpx/whpx-all.c | 522 +--------------- target/i386/whpx/whpx-apic.c | 2 +- 9 files changed, 611 insertions(+), 523 deletions(-) create mode 100644 accel/whpx/whpx-common.c create mode 100644 include/system/whpx-all.h create mode 100644 include/system/whpx-common.h rename {target/i386/whpx =3D> include/system}/whpx-internal.h (98%) diff --git a/MAINTAINERS b/MAINTAINERS index 238065e1c9..259b010f55 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -547,6 +547,8 @@ F: target/i386/whpx/ F: accel/stubs/whpx-stub.c F: include/system/whpx.h F: include/system/whpx-accel-ops.h +F: include/system/whpx-common.h +F: include/system/whpx-internal.h =20 X86 Instruction Emulator M: Cameron Esfahani diff --git a/accel/whpx/meson.build b/accel/whpx/meson.build index 7b3d6f1c1c..fad28dddcb 100644 --- a/accel/whpx/meson.build +++ b/accel/whpx/meson.build @@ -1,6 +1,7 @@ whpx_ss =3D ss.source_set() whpx_ss.add(files( 'whpx-accel-ops.c', + 'whpx-common.c' )) =20 specific_ss.add_all(when: 'CONFIG_WHPX', if_true: whpx_ss) diff --git a/accel/whpx/whpx-common.c b/accel/whpx/whpx-common.c new file mode 100644 index 0000000000..b5e5fda696 --- /dev/null +++ b/accel/whpx/whpx-common.c @@ -0,0 +1,564 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * QEMU Windows Hypervisor Platform accelerator (WHPX) + * + * Copyright Microsoft Corp. 2017 + * + * This work is licensed under the terms of the GNU GPL, version 2 or late= r. + * See the COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "system/address-spaces.h" +#include "system/ioport.h" +#include "gdbstub/helpers.h" +#include "qemu/accel.h" +#include "accel/accel-ops.h" +#include "system/whpx.h" +#include "system/cpus.h" +#include "system/runstate.h" +#include "qemu/main-loop.h" +#include "hw/boards.h" +#include "hw/intc/ioapic.h" +#include "qemu/error-report.h" +#include "qapi/error.h" +#include "qapi/qapi-types-common.h" +#include "qapi/qapi-visit-common.h" +#include "migration/blocker.h" +#include "accel/accel-cpu-target.h" +#include + +#include "system/whpx-internal.h" +#include "system/whpx-accel-ops.h" +#include "system/whpx-common.h" +#include "system/whpx-all.h" + +#include +#include + +bool whpx_allowed; +static bool whp_dispatch_initialized; +static HMODULE hWinHvPlatform; +static HMODULE hWinHvEmulation; + +struct whpx_state whpx_global; +struct WHPDispatch whp_dispatch; + +/* Tries to find a breakpoint at the specified address. */ +struct whpx_breakpoint *whpx_lookup_breakpoint_by_addr(uint64_t address) +{ + struct whpx_state *whpx =3D &whpx_global; + int i; + + if (whpx->breakpoints.breakpoints) { + for (i =3D 0; i < whpx->breakpoints.breakpoints->used; i++) { + if (address =3D=3D whpx->breakpoints.breakpoints->data[i].addr= ess) { + return &whpx->breakpoints.breakpoints->data[i]; + } + } + } + + return NULL; +} + +/* + * This function is called when the a VCPU is about to start and no other + * VCPUs have been started so far. Since the VCPU start order could be + * arbitrary, it doesn't have to be VCPU#0. + * + * It is used to commit the breakpoints into memory, and configure WHPX + * to intercept debug exceptions. + * + * Note that whpx_set_exception_exit_bitmap() cannot be called if one or + * more VCPUs are already running, so this is the best place to do it. + */ +int whpx_first_vcpu_starting(CPUState *cpu) +{ + struct whpx_state *whpx =3D &whpx_global; + + g_assert(bql_locked()); + + if (!QTAILQ_EMPTY(&cpu->breakpoints) || + (whpx->breakpoints.breakpoints && + whpx->breakpoints.breakpoints->used)) { + CPUBreakpoint *bp; + int i =3D 0; + bool update_pending =3D false; + + QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) { + if (i >=3D whpx->breakpoints.original_address_count || + bp->pc !=3D whpx->breakpoints.original_addresses[i]) { + update_pending =3D true; + } + + i++; + } + + if (i !=3D whpx->breakpoints.original_address_count) { + update_pending =3D true; + } + + if (update_pending) { + /* + * The CPU breakpoints have changed since the last call to + * whpx_translate_cpu_breakpoints(). WHPX breakpoints must + * now be recomputed. + */ + whpx_translate_cpu_breakpoints(&whpx->breakpoints, cpu, i); + } + /* Actually insert the breakpoints into the memory. */ + whpx_apply_breakpoints(whpx->breakpoints.breakpoints, cpu, true); + } + HRESULT hr; + uint64_t exception_mask; + if (whpx->step_pending || + (whpx->breakpoints.breakpoints && + whpx->breakpoints.breakpoints->used)) { + /* + * We are either attempting to single-step one or more CPUs, or + * have one or more breakpoints enabled. Both require intercepting + * the WHvX64ExceptionTypeBreakpointTrap exception. + */ + exception_mask =3D 1UL << WHvX64ExceptionTypeDebugTrapOrFault; + } else { + /* Let the guest handle all exceptions. */ + exception_mask =3D 0; + } + hr =3D whpx_set_exception_exit_bitmap(exception_mask); + if (!SUCCEEDED(hr)) { + error_report("WHPX: Failed to update exception exit mask," + "hr=3D%08lx.", hr); + return 1; + } + return 0; +} + +/* + * This function is called when the last VCPU has finished running. + * It is used to remove any previously set breakpoints from memory. + */ +int whpx_last_vcpu_stopping(CPUState *cpu) +{ +#ifdef __x86_64__ + whpx_apply_breakpoints(whpx_global.breakpoints.breakpoints, cpu, false= ); +#endif + return 0; +} + +static void do_whpx_cpu_synchronize_state(CPUState *cpu, run_on_cpu_data a= rg) +{ + if (!cpu->vcpu_dirty) { + whpx_get_registers(cpu); + cpu->vcpu_dirty =3D true; + } +} + +static void do_whpx_cpu_synchronize_post_reset(CPUState *cpu, + run_on_cpu_data arg) +{ + whpx_set_registers(cpu, WHPX_SET_RESET_STATE); + cpu->vcpu_dirty =3D false; +} + +static void do_whpx_cpu_synchronize_post_init(CPUState *cpu, + run_on_cpu_data arg) +{ + whpx_set_registers(cpu, WHPX_SET_FULL_STATE); + cpu->vcpu_dirty =3D false; +} + +static void do_whpx_cpu_synchronize_pre_loadvm(CPUState *cpu, + run_on_cpu_data arg) +{ + cpu->vcpu_dirty =3D true; +} + +/* + * CPU support. + */ + +void whpx_cpu_synchronize_state(CPUState *cpu) +{ + if (!cpu->vcpu_dirty) { + run_on_cpu(cpu, do_whpx_cpu_synchronize_state, RUN_ON_CPU_NULL); + } +} + +void whpx_cpu_synchronize_post_reset(CPUState *cpu) +{ + run_on_cpu(cpu, do_whpx_cpu_synchronize_post_reset, RUN_ON_CPU_NULL); +} + +void whpx_cpu_synchronize_post_init(CPUState *cpu) +{ + run_on_cpu(cpu, do_whpx_cpu_synchronize_post_init, RUN_ON_CPU_NULL); +} + +void whpx_cpu_synchronize_pre_loadvm(CPUState *cpu) +{ + run_on_cpu(cpu, do_whpx_cpu_synchronize_pre_loadvm, RUN_ON_CPU_NULL); +} + +static void whpx_pre_resume_vm(AccelState *as, bool step_pending) +{ + whpx_global.step_pending =3D step_pending; +} + +/* + * Vcpu support. + */ + +int whpx_vcpu_exec(CPUState *cpu) +{ + int ret; + int fatal; + + for (;;) { + if (cpu->exception_index >=3D EXCP_INTERRUPT) { + ret =3D cpu->exception_index; + cpu->exception_index =3D -1; + break; + } + + fatal =3D whpx_vcpu_run(cpu); + + if (fatal) { + error_report("WHPX: Failed to exec a virtual processor"); + abort(); + } + } + + return ret; +} + +void whpx_destroy_vcpu(CPUState *cpu) +{ + struct whpx_state *whpx =3D &whpx_global; + + whp_dispatch.WHvDeleteVirtualProcessor(whpx->partition, cpu->cpu_index= ); + AccelCPUState *vcpu =3D cpu->accel; + whp_dispatch.WHvEmulatorDestroyEmulator(vcpu->emulator); + g_free(cpu->accel); +} + + +void whpx_vcpu_kick(CPUState *cpu) +{ + struct whpx_state *whpx =3D &whpx_global; + whp_dispatch.WHvCancelRunVirtualProcessor( + whpx->partition, cpu->cpu_index, 0); +} + +/* + * Memory support. + */ + +static void whpx_update_mapping(hwaddr start_pa, ram_addr_t size, + void *host_va, int add, int rom, + const char *name) +{ + struct whpx_state *whpx =3D &whpx_global; + HRESULT hr; + + /* + if (add) { + printf("WHPX: ADD PA:%p Size:%p, Host:%p, %s, '%s'\n", + (void*)start_pa, (void*)size, host_va, + (rom ? "ROM" : "RAM"), name); + } else { + printf("WHPX: DEL PA:%p Size:%p, Host:%p, '%s'\n", + (void*)start_pa, (void*)size, host_va, name); + } + */ + + if (add) { + hr =3D whp_dispatch.WHvMapGpaRange(whpx->partition, + host_va, + start_pa, + size, + (WHvMapGpaRangeFlagRead | + WHvMapGpaRangeFlagExecute | + (rom ? 0 : WHvMapGpaRangeFlagWri= te))); + } else { + hr =3D whp_dispatch.WHvUnmapGpaRange(whpx->partition, + start_pa, + size); + } + + if (FAILED(hr)) { + error_report("WHPX: Failed to %s GPA range '%s' PA:%p, Size:%p byt= es," + " Host:%p, hr=3D%08lx", + (add ? "MAP" : "UNMAP"), name, + (void *)(uintptr_t)start_pa, (void *)size, host_va, h= r); + } +} + +static void whpx_process_section(MemoryRegionSection *section, int add) +{ + MemoryRegion *mr =3D section->mr; + hwaddr start_pa =3D section->offset_within_address_space; + ram_addr_t size =3D int128_get64(section->size); + unsigned int delta; + uint64_t host_va; + + if (!memory_region_is_ram(mr)) { + return; + } + + delta =3D qemu_real_host_page_size() - (start_pa & ~qemu_real_host_pag= e_mask()); + delta &=3D ~qemu_real_host_page_mask(); + if (delta > size) { + return; + } + start_pa +=3D delta; + size -=3D delta; + size &=3D qemu_real_host_page_mask(); + if (!size || (start_pa & ~qemu_real_host_page_mask())) { + return; + } + + host_va =3D (uintptr_t)memory_region_get_ram_ptr(mr) + + section->offset_within_region + delta; + + whpx_update_mapping(start_pa, size, (void *)(uintptr_t)host_va, add, + memory_region_is_rom(mr), mr->name); +} + +static void whpx_region_add(MemoryListener *listener, + MemoryRegionSection *section) +{ + memory_region_ref(section->mr); + whpx_process_section(section, 1); +} + +static void whpx_region_del(MemoryListener *listener, + MemoryRegionSection *section) +{ + whpx_process_section(section, 0); + memory_region_unref(section->mr); +} + +static void whpx_transaction_begin(MemoryListener *listener) +{ +} + +static void whpx_transaction_commit(MemoryListener *listener) +{ +} + +static void whpx_log_sync(MemoryListener *listener, + MemoryRegionSection *section) +{ + MemoryRegion *mr =3D section->mr; + + if (!memory_region_is_ram(mr)) { + return; + } + + memory_region_set_dirty(mr, 0, int128_get64(section->size)); +} + +static MemoryListener whpx_memory_listener =3D { + .name =3D "whpx", + .begin =3D whpx_transaction_begin, + .commit =3D whpx_transaction_commit, + .region_add =3D whpx_region_add, + .region_del =3D whpx_region_del, + .log_sync =3D whpx_log_sync, + .priority =3D MEMORY_LISTENER_PRIORITY_ACCEL, +}; + +void whpx_memory_init(void) +{ + memory_listener_register(&whpx_memory_listener, &address_space_memory); +} + +/* + * Load the functions from the given library, using the given handle. If a + * handle is provided, it is used, otherwise the library is opened. The + * handle will be updated on return with the opened one. + */ +static bool load_whp_dispatch_fns(HMODULE *handle, + WHPFunctionList function_list) +{ + HMODULE hLib =3D *handle; + + #define WINHV_PLATFORM_DLL "WinHvPlatform.dll" + #define WINHV_EMULATION_DLL "WinHvEmulation.dll" + #define WHP_LOAD_FIELD_OPTIONAL(return_type, function_name, signature)= \ + whp_dispatch.function_name =3D \ + (function_name ## _t)GetProcAddress(hLib, #function_name); \ + + #define WHP_LOAD_FIELD(return_type, function_name, signature) \ + whp_dispatch.function_name =3D \ + (function_name ## _t)GetProcAddress(hLib, #function_name); \ + if (!whp_dispatch.function_name) { \ + error_report("Could not load function %s", #function_name); \ + goto error; \ + } \ + + #define WHP_LOAD_LIB(lib_name, handle_lib) \ + if (!handle_lib) { \ + handle_lib =3D LoadLibrary(lib_name); \ + if (!handle_lib) { \ + error_report("Could not load library %s.", lib_name); \ + goto error; \ + } \ + } \ + + switch (function_list) { + case WINHV_PLATFORM_FNS_DEFAULT: + WHP_LOAD_LIB(WINHV_PLATFORM_DLL, hLib) + LIST_WINHVPLATFORM_FUNCTIONS(WHP_LOAD_FIELD) + break; + case WINHV_EMULATION_FNS_DEFAULT: + WHP_LOAD_LIB(WINHV_EMULATION_DLL, hLib) + LIST_WINHVEMULATION_FUNCTIONS(WHP_LOAD_FIELD) + break; + case WINHV_PLATFORM_FNS_SUPPLEMENTAL: + WHP_LOAD_LIB(WINHV_PLATFORM_DLL, hLib) + LIST_WINHVPLATFORM_FUNCTIONS_SUPPLEMENTAL(WHP_LOAD_FIELD_OPTIONAL) + break; + } + + *handle =3D hLib; + return true; + +error: + if (hLib) { + FreeLibrary(hLib); + } + + return false; +} + +static void whpx_set_kernel_irqchip(Object *obj, Visitor *v, + const char *name, void *opaque, + Error **errp) +{ + struct whpx_state *whpx =3D &whpx_global; + OnOffSplit mode; + + if (!visit_type_OnOffSplit(v, name, &mode, errp)) { + return; + } + + switch (mode) { + case ON_OFF_SPLIT_ON: + whpx->kernel_irqchip_allowed =3D true; + whpx->kernel_irqchip_required =3D true; + break; + + case ON_OFF_SPLIT_OFF: + whpx->kernel_irqchip_allowed =3D false; + whpx->kernel_irqchip_required =3D false; + break; + + case ON_OFF_SPLIT_SPLIT: + error_setg(errp, "WHPX: split irqchip currently not supported"); + error_append_hint(errp, + "Try without kernel-irqchip or with kernel-irqchip=3Don|off"); + break; + + default: + /* + * The value was checked in visit_type_OnOffSplit() above. If + * we get here, then something is wrong in QEMU. + */ + abort(); + } +} + +static void whpx_cpu_accel_class_init(ObjectClass *oc, const void *data) +{ + AccelCPUClass *acc =3D ACCEL_CPU_CLASS(oc); + + acc->cpu_instance_init =3D whpx_cpu_instance_init; +} + +static const TypeInfo whpx_cpu_accel_type =3D { + .name =3D ACCEL_CPU_NAME("whpx"), + + .parent =3D TYPE_ACCEL_CPU, + .class_init =3D whpx_cpu_accel_class_init, + .abstract =3D true, +}; + +/* + * Partition support + */ + +bool whpx_apic_in_platform(void) +{ + return whpx_global.apic_in_platform; +} + +static void whpx_accel_class_init(ObjectClass *oc, const void *data) +{ + AccelClass *ac =3D ACCEL_CLASS(oc); + ac->name =3D "WHPX"; + ac->init_machine =3D whpx_accel_init; + ac->pre_resume_vm =3D whpx_pre_resume_vm; + ac->allowed =3D &whpx_allowed; + + object_class_property_add(oc, "kernel-irqchip", "on|off|split", + NULL, whpx_set_kernel_irqchip, + NULL, NULL); + object_class_property_set_description(oc, "kernel-irqchip", + "Configure WHPX in-kernel irqchip"); +} + +static void whpx_accel_instance_init(Object *obj) +{ + struct whpx_state *whpx =3D &whpx_global; + + memset(whpx, 0, sizeof(struct whpx_state)); + /* Turn on kernel-irqchip, by default */ + whpx->kernel_irqchip_allowed =3D true; +} + +static const TypeInfo whpx_accel_type =3D { + .name =3D ACCEL_CLASS_NAME("whpx"), + .parent =3D TYPE_ACCEL, + .instance_init =3D whpx_accel_instance_init, + .class_init =3D whpx_accel_class_init, +}; + +static void whpx_type_init(void) +{ + type_register_static(&whpx_accel_type); + type_register_static(&whpx_cpu_accel_type); +} + +bool init_whp_dispatch(void) +{ + if (whp_dispatch_initialized) { + return true; + } + + if (!load_whp_dispatch_fns(&hWinHvPlatform, WINHV_PLATFORM_FNS_DEFAULT= )) { + goto error; + } + + if (!load_whp_dispatch_fns(&hWinHvEmulation, WINHV_EMULATION_FNS_DEFAU= LT)) { + goto error; + } + + assert(load_whp_dispatch_fns(&hWinHvPlatform, + WINHV_PLATFORM_FNS_SUPPLEMENTAL)); + whp_dispatch_initialized =3D true; + + return true; +error: + if (hWinHvPlatform) { + FreeLibrary(hWinHvPlatform); + } + if (hWinHvEmulation) { + FreeLibrary(hWinHvEmulation); + } + return false; +} + +type_init(whpx_type_init); diff --git a/include/system/whpx-accel-ops.h b/include/system/whpx-accel-op= s.h index 54cfc25a14..ed9d4c49f4 100644 --- a/include/system/whpx-accel-ops.h +++ b/include/system/whpx-accel-ops.h @@ -7,8 +7,8 @@ * See the COPYING file in the top-level directory. */ =20 -#ifndef TARGET_I386_WHPX_ACCEL_OPS_H -#define TARGET_I386_WHPX_ACCEL_OPS_H +#ifndef SYSTEM_WHPX_ACCEL_OPS_H +#define SYSTEM_WHPX_ACCEL_OPS_H =20 #include "system/cpus.h" =20 diff --git a/include/system/whpx-all.h b/include/system/whpx-all.h new file mode 100644 index 0000000000..a82b083284 --- /dev/null +++ b/include/system/whpx-all.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef SYSTEM_WHPX_ALL_H +#define SYSTEM_WHPX_ALL_H + +/* Called by whpx-common */ +int whpx_vcpu_run(CPUState *cpu); +void whpx_get_registers(CPUState *cpu); +void whpx_set_registers(CPUState *cpu, int level); +int whpx_accel_init(AccelState *as, MachineState *ms); +void whpx_cpu_instance_init(CPUState *cs); +HRESULT whpx_set_exception_exit_bitmap(UINT64 exceptions); +#endif diff --git a/include/system/whpx-common.h b/include/system/whpx-common.h new file mode 100644 index 0000000000..e549c7539c --- /dev/null +++ b/include/system/whpx-common.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef SYSTEM_WHPX_COMMON_H +#define SYSTEM_WHPX_COMMON_H + +struct AccelCPUState { + WHV_EMULATOR_HANDLE emulator; + bool window_registered; + bool interruptable; + bool ready_for_pic_interrupt; + uint64_t tpr; + uint64_t apic_base; + bool interruption_pending; + /* Must be the last field as it may have a tail */ + WHV_RUN_VP_EXIT_CONTEXT exit_ctx; +}; + +int whpx_first_vcpu_starting(CPUState *cpu); +int whpx_last_vcpu_stopping(CPUState *cpu); +void whpx_memory_init(void); +struct whpx_breakpoint *whpx_lookup_breakpoint_by_addr(uint64_t address); +#endif diff --git a/target/i386/whpx/whpx-internal.h b/include/system/whpx-interna= l.h similarity index 98% rename from target/i386/whpx/whpx-internal.h rename to include/system/whpx-internal.h index 435e0c5046..e61375d554 100644 --- a/target/i386/whpx/whpx-internal.h +++ b/include/system/whpx-internal.h @@ -1,5 +1,6 @@ -#ifndef TARGET_I386_WHPX_INTERNAL_H -#define TARGET_I386_WHPX_INTERNAL_H +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef SYSTEM_WHPX_INTERNAL_H +#define SYSTEM_WHPX_INTERNAL_H =20 #include #include @@ -117,4 +118,3 @@ typedef enum WHPFunctionList { } WHPFunctionList; =20 #endif /* TARGET_I386_WHPX_INTERNAL_H */ - diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c index 5a431fc3c7..4b4be67773 100644 --- a/target/i386/whpx/whpx-all.c +++ b/target/i386/whpx/whpx-all.c @@ -33,6 +33,8 @@ =20 #include "system/whpx-internal.h" #include "system/whpx-accel-ops.h" +#include "system/whpx-all.h" +#include "system/whpx-common.h" =20 #include #include @@ -931,7 +933,7 @@ static int whpx_handle_portio(CPUState *cpu, * The 'exceptions' argument accepts a bitmask, e.g: * (1 << WHvX64ExceptionTypeDebugTrapOrFault) | (...) */ -static HRESULT whpx_set_exception_exit_bitmap(UINT64 exceptions) +HRESULT whpx_set_exception_exit_bitmap(UINT64 exceptions) { struct whpx_state *whpx =3D &whpx_global; WHV_PARTITION_PROPERTY prop =3D { 0, }; @@ -1081,23 +1083,6 @@ static HRESULT whpx_vcpu_configure_single_stepping(C= PUState *cpu, return S_OK; } =20 -/* Tries to find a breakpoint at the specified address. */ -static struct whpx_breakpoint *whpx_lookup_breakpoint_by_addr(uint64_t add= ress) -{ - struct whpx_state *whpx =3D &whpx_global; - int i; - - if (whpx->breakpoints.breakpoints) { - for (i =3D 0; i < whpx->breakpoints.breakpoints->used; i++) { - if (address =3D=3D whpx->breakpoints.breakpoints->data[i].addr= ess) { - return &whpx->breakpoints.breakpoints->data[i]; - } - } - } - - return NULL; -} - /* * Linux uses int3 (0xCC) during startup (see int3_selftest()) and for * debugging user-mode applications. Since the WHPX API does not offer @@ -1303,93 +1288,6 @@ static void whpx_apply_breakpoints( } } =20 -/* - * This function is called when the a VCPU is about to start and no other - * VCPUs have been started so far. Since the VCPU start order could be - * arbitrary, it doesn't have to be VCPU#0. - * - * It is used to commit the breakpoints into memory, and configure WHPX - * to intercept debug exceptions. - * - * Note that whpx_set_exception_exit_bitmap() cannot be called if one or - * more VCPUs are already running, so this is the best place to do it. - */ -static int whpx_first_vcpu_starting(CPUState *cpu) -{ - struct whpx_state *whpx =3D &whpx_global; - HRESULT hr; - - g_assert(bql_locked()); - - if (!QTAILQ_EMPTY(&cpu->breakpoints) || - (whpx->breakpoints.breakpoints && - whpx->breakpoints.breakpoints->used)) { - CPUBreakpoint *bp; - int i =3D 0; - bool update_pending =3D false; - - QTAILQ_FOREACH(bp, &cpu->breakpoints, entry) { - if (i >=3D whpx->breakpoints.original_address_count || - bp->pc !=3D whpx->breakpoints.original_addresses[i]) { - update_pending =3D true; - } - - i++; - } - - if (i !=3D whpx->breakpoints.original_address_count) { - update_pending =3D true; - } - - if (update_pending) { - /* - * The CPU breakpoints have changed since the last call to - * whpx_translate_cpu_breakpoints(). WHPX breakpoints must - * now be recomputed. - */ - whpx_translate_cpu_breakpoints(&whpx->breakpoints, cpu, i); - } - - /* Actually insert the breakpoints into the memory. */ - whpx_apply_breakpoints(whpx->breakpoints.breakpoints, cpu, true); - } - - uint64_t exception_mask; - if (whpx->step_pending || - (whpx->breakpoints.breakpoints && - whpx->breakpoints.breakpoints->used)) { - /* - * We are either attempting to single-step one or more CPUs, or - * have one or more breakpoints enabled. Both require intercepting - * the WHvX64ExceptionTypeBreakpointTrap exception. - */ - - exception_mask =3D 1UL << WHvX64ExceptionTypeDebugTrapOrFault; - } else { - /* Let the guest handle all exceptions. */ - exception_mask =3D 0; - } - - hr =3D whpx_set_exception_exit_bitmap(exception_mask); - if (!SUCCEEDED(hr)) { - error_report("WHPX: Failed to update exception exit mask," - "hr=3D%08lx.", hr); - return 1; - } - - return 0; -} - -/* - * This function is called when the last VCPU has finished running. - * It is used to remove any previously set breakpoints from memory. - */ -static int whpx_last_vcpu_stopping(CPUState *cpu) -{ - whpx_apply_breakpoints(whpx_global.breakpoints.breakpoints, cpu, false= ); - return 0; -} - /* Returns the address of the next instruction that is about to be execute= d. */ static vaddr whpx_vcpu_get_pc(CPUState *cpu, bool exit_context_valid) { @@ -2054,65 +1952,6 @@ static int whpx_vcpu_run(CPUState *cpu) return ret < 0; } =20 -static void do_whpx_cpu_synchronize_state(CPUState *cpu, run_on_cpu_data a= rg) -{ - if (!cpu->vcpu_dirty) { - whpx_get_registers(cpu); - cpu->vcpu_dirty =3D true; - } -} - -static void do_whpx_cpu_synchronize_post_reset(CPUState *cpu, - run_on_cpu_data arg) -{ - whpx_set_registers(cpu, WHPX_SET_RESET_STATE); - cpu->vcpu_dirty =3D false; -} - -static void do_whpx_cpu_synchronize_post_init(CPUState *cpu, - run_on_cpu_data arg) -{ - whpx_set_registers(cpu, WHPX_SET_FULL_STATE); - cpu->vcpu_dirty =3D false; -} - -static void do_whpx_cpu_synchronize_pre_loadvm(CPUState *cpu, - run_on_cpu_data arg) -{ - cpu->vcpu_dirty =3D true; -} - -/* - * CPU support. - */ - -void whpx_cpu_synchronize_state(CPUState *cpu) -{ - if (!cpu->vcpu_dirty) { - run_on_cpu(cpu, do_whpx_cpu_synchronize_state, RUN_ON_CPU_NULL); - } -} - -void whpx_cpu_synchronize_post_reset(CPUState *cpu) -{ - run_on_cpu(cpu, do_whpx_cpu_synchronize_post_reset, RUN_ON_CPU_NULL); -} - -void whpx_cpu_synchronize_post_init(CPUState *cpu) -{ - run_on_cpu(cpu, do_whpx_cpu_synchronize_post_init, RUN_ON_CPU_NULL); -} - -void whpx_cpu_synchronize_pre_loadvm(CPUState *cpu) -{ - run_on_cpu(cpu, do_whpx_cpu_synchronize_pre_loadvm, RUN_ON_CPU_NULL); -} - -static void whpx_pre_resume_vm(AccelState *as, bool step_pending) -{ - whpx_global.step_pending =3D step_pending; -} - /* * Vcpu support. */ @@ -2241,295 +2080,18 @@ error: return ret; } =20 -int whpx_vcpu_exec(CPUState *cpu) -{ - int ret; - int fatal; - - for (;;) { - if (cpu->exception_index >=3D EXCP_INTERRUPT) { - ret =3D cpu->exception_index; - cpu->exception_index =3D -1; - break; - } - - fatal =3D whpx_vcpu_run(cpu); - - if (fatal) { - error_report("WHPX: Failed to exec a virtual processor"); - abort(); - } - } - - return ret; -} - -void whpx_destroy_vcpu(CPUState *cpu) -{ - struct whpx_state *whpx =3D &whpx_global; - AccelCPUState *vcpu =3D cpu->accel; - - whp_dispatch.WHvDeleteVirtualProcessor(whpx->partition, cpu->cpu_index= ); - whp_dispatch.WHvEmulatorDestroyEmulator(vcpu->emulator); - g_free(cpu->accel); -} - -void whpx_vcpu_kick(CPUState *cpu) -{ - struct whpx_state *whpx =3D &whpx_global; - whp_dispatch.WHvCancelRunVirtualProcessor( - whpx->partition, cpu->cpu_index, 0); -} - -/* - * Memory support. - */ - -static void whpx_update_mapping(hwaddr start_pa, ram_addr_t size, - void *host_va, int add, int rom, - const char *name) -{ - struct whpx_state *whpx =3D &whpx_global; - HRESULT hr; - - /* - if (add) { - printf("WHPX: ADD PA:%p Size:%p, Host:%p, %s, '%s'\n", - (void*)start_pa, (void*)size, host_va, - (rom ? "ROM" : "RAM"), name); - } else { - printf("WHPX: DEL PA:%p Size:%p, Host:%p, '%s'\n", - (void*)start_pa, (void*)size, host_va, name); - } - */ - - if (add) { - hr =3D whp_dispatch.WHvMapGpaRange(whpx->partition, - host_va, - start_pa, - size, - (WHvMapGpaRangeFlagRead | - WHvMapGpaRangeFlagExecute | - (rom ? 0 : WHvMapGpaRangeFlagWri= te))); - } else { - hr =3D whp_dispatch.WHvUnmapGpaRange(whpx->partition, - start_pa, - size); - } - - if (FAILED(hr)) { - error_report("WHPX: Failed to %s GPA range '%s' PA:%p, Size:%p byt= es," - " Host:%p, hr=3D%08lx", - (add ? "MAP" : "UNMAP"), name, - (void *)(uintptr_t)start_pa, (void *)size, host_va, h= r); - } -} - -static void whpx_process_section(MemoryRegionSection *section, int add) -{ - MemoryRegion *mr =3D section->mr; - hwaddr start_pa =3D section->offset_within_address_space; - ram_addr_t size =3D int128_get64(section->size); - unsigned int delta; - uint64_t host_va; - - if (!memory_region_is_ram(mr)) { - return; - } - - delta =3D qemu_real_host_page_size() - (start_pa & ~qemu_real_host_pag= e_mask()); - delta &=3D ~qemu_real_host_page_mask(); - if (delta > size) { - return; - } - start_pa +=3D delta; - size -=3D delta; - size &=3D qemu_real_host_page_mask(); - if (!size || (start_pa & ~qemu_real_host_page_mask())) { - return; - } - - host_va =3D (uintptr_t)memory_region_get_ram_ptr(mr) - + section->offset_within_region + delta; - - whpx_update_mapping(start_pa, size, (void *)(uintptr_t)host_va, add, - memory_region_is_rom(mr), mr->name); -} - -static void whpx_region_add(MemoryListener *listener, - MemoryRegionSection *section) -{ - memory_region_ref(section->mr); - whpx_process_section(section, 1); -} - -static void whpx_region_del(MemoryListener *listener, - MemoryRegionSection *section) -{ - whpx_process_section(section, 0); - memory_region_unref(section->mr); -} - -static void whpx_transaction_begin(MemoryListener *listener) -{ -} - -static void whpx_transaction_commit(MemoryListener *listener) -{ -} - -static void whpx_log_sync(MemoryListener *listener, - MemoryRegionSection *section) -{ - MemoryRegion *mr =3D section->mr; - - if (!memory_region_is_ram(mr)) { - return; - } - - memory_region_set_dirty(mr, 0, int128_get64(section->size)); -} - -static MemoryListener whpx_memory_listener =3D { - .name =3D "whpx", - .begin =3D whpx_transaction_begin, - .commit =3D whpx_transaction_commit, - .region_add =3D whpx_region_add, - .region_del =3D whpx_region_del, - .log_sync =3D whpx_log_sync, - .priority =3D MEMORY_LISTENER_PRIORITY_ACCEL, -}; - -static void whpx_memory_init(void) -{ - memory_listener_register(&whpx_memory_listener, &address_space_memory); -} - -/* - * Load the functions from the given library, using the given handle. If a - * handle is provided, it is used, otherwise the library is opened. The - * handle will be updated on return with the opened one. - */ -static bool load_whp_dispatch_fns(HMODULE *handle, - WHPFunctionList function_list) -{ - HMODULE hLib =3D *handle; - - #define WINHV_PLATFORM_DLL "WinHvPlatform.dll" - #define WINHV_EMULATION_DLL "WinHvEmulation.dll" - #define WHP_LOAD_FIELD_OPTIONAL(return_type, function_name, signature)= \ - whp_dispatch.function_name =3D \ - (function_name ## _t)GetProcAddress(hLib, #function_name); \ - - #define WHP_LOAD_FIELD(return_type, function_name, signature) \ - whp_dispatch.function_name =3D \ - (function_name ## _t)GetProcAddress(hLib, #function_name); \ - if (!whp_dispatch.function_name) { \ - error_report("Could not load function %s", #function_name); \ - goto error; \ - } \ - - #define WHP_LOAD_LIB(lib_name, handle_lib) \ - if (!handle_lib) { \ - handle_lib =3D LoadLibrary(lib_name); \ - if (!handle_lib) { \ - error_report("Could not load library %s.", lib_name); \ - goto error; \ - } \ - } \ - - switch (function_list) { - case WINHV_PLATFORM_FNS_DEFAULT: - WHP_LOAD_LIB(WINHV_PLATFORM_DLL, hLib) - LIST_WINHVPLATFORM_FUNCTIONS(WHP_LOAD_FIELD) - break; - - case WINHV_EMULATION_FNS_DEFAULT: - WHP_LOAD_LIB(WINHV_EMULATION_DLL, hLib) - LIST_WINHVEMULATION_FUNCTIONS(WHP_LOAD_FIELD) - break; - - case WINHV_PLATFORM_FNS_SUPPLEMENTAL: - WHP_LOAD_LIB(WINHV_PLATFORM_DLL, hLib) - LIST_WINHVPLATFORM_FUNCTIONS_SUPPLEMENTAL(WHP_LOAD_FIELD_OPTIONAL) - break; - } - - *handle =3D hLib; - return true; - -error: - if (hLib) { - FreeLibrary(hLib); - } - - return false; -} - -static void whpx_set_kernel_irqchip(Object *obj, Visitor *v, - const char *name, void *opaque, - Error **errp) -{ - struct whpx_state *whpx =3D &whpx_global; - OnOffSplit mode; - - if (!visit_type_OnOffSplit(v, name, &mode, errp)) { - return; - } - - switch (mode) { - case ON_OFF_SPLIT_ON: - whpx->kernel_irqchip_allowed =3D true; - whpx->kernel_irqchip_required =3D true; - break; - - case ON_OFF_SPLIT_OFF: - whpx->kernel_irqchip_allowed =3D false; - whpx->kernel_irqchip_required =3D false; - break; - - case ON_OFF_SPLIT_SPLIT: - error_setg(errp, "WHPX: split irqchip currently not supported"); - error_append_hint(errp, - "Try without kernel-irqchip or with kernel-irqchip=3Don|off"); - break; - - default: - /* - * The value was checked in visit_type_OnOffSplit() above. If - * we get here, then something is wrong in QEMU. - */ - abort(); - } -} - -static void whpx_cpu_instance_init(CPUState *cs) +void whpx_cpu_instance_init(CPUState *cs) { X86CPU *cpu =3D X86_CPU(cs); =20 host_cpu_instance_init(cpu); } =20 -static void whpx_cpu_accel_class_init(ObjectClass *oc, const void *data) -{ - AccelCPUClass *acc =3D ACCEL_CPU_CLASS(oc); - - acc->cpu_instance_init =3D whpx_cpu_instance_init; -} - -static const TypeInfo whpx_cpu_accel_type =3D { - .name =3D ACCEL_CPU_NAME("whpx"), - - .parent =3D TYPE_ACCEL_CPU, - .class_init =3D whpx_cpu_accel_class_init, - .abstract =3D true, -}; - /* * Partition support */ =20 -static int whpx_accel_init(AccelState *as, MachineState *ms) +int whpx_accel_init(AccelState *as, MachineState *ms) { struct whpx_state *whpx; int ret; @@ -2712,77 +2274,3 @@ error: =20 return ret; } - -bool whpx_apic_in_platform(void) { - return whpx_global.apic_in_platform; -} - -static void whpx_accel_class_init(ObjectClass *oc, const void *data) -{ - AccelClass *ac =3D ACCEL_CLASS(oc); - ac->name =3D "WHPX"; - ac->init_machine =3D whpx_accel_init; - ac->pre_resume_vm =3D whpx_pre_resume_vm; - ac->allowed =3D &whpx_allowed; - - object_class_property_add(oc, "kernel-irqchip", "on|off|split", - NULL, whpx_set_kernel_irqchip, - NULL, NULL); - object_class_property_set_description(oc, "kernel-irqchip", - "Configure WHPX in-kernel irqchip"); -} - -static void whpx_accel_instance_init(Object *obj) -{ - struct whpx_state *whpx =3D &whpx_global; - - memset(whpx, 0, sizeof(struct whpx_state)); - /* Turn on kernel-irqchip, by default */ - whpx->kernel_irqchip_allowed =3D true; -} - -static const TypeInfo whpx_accel_type =3D { - .name =3D ACCEL_CLASS_NAME("whpx"), - .parent =3D TYPE_ACCEL, - .instance_init =3D whpx_accel_instance_init, - .class_init =3D whpx_accel_class_init, -}; - -static void whpx_type_init(void) -{ - type_register_static(&whpx_accel_type); - type_register_static(&whpx_cpu_accel_type); -} - -bool init_whp_dispatch(void) -{ - if (whp_dispatch_initialized) { - return true; - } - - if (!load_whp_dispatch_fns(&hWinHvPlatform, WINHV_PLATFORM_FNS_DEFAULT= )) { - goto error; - } - - if (!load_whp_dispatch_fns(&hWinHvEmulation, WINHV_EMULATION_FNS_DEFAU= LT)) { - goto error; - } - - assert(load_whp_dispatch_fns(&hWinHvPlatform, - WINHV_PLATFORM_FNS_SUPPLEMENTAL)); - whp_dispatch_initialized =3D true; - - return true; -error: - if (hWinHvPlatform) { - FreeLibrary(hWinHvPlatform); - } - - if (hWinHvEmulation) { - FreeLibrary(hWinHvEmulation); - } - - return false; -} - -type_init(whpx_type_init); diff --git a/target/i386/whpx/whpx-apic.c b/target/i386/whpx/whpx-apic.c index e1ef6d4e6d..badb404b63 100644 --- a/target/i386/whpx/whpx-apic.c +++ b/target/i386/whpx/whpx-apic.c @@ -18,7 +18,7 @@ #include "hw/pci/msi.h" #include "system/hw_accel.h" #include "system/whpx.h" -#include "whpx-internal.h" +#include "system/whpx-internal.h" =20 struct whpx_lapic_state { struct { --=20 2.39.5 (Apple Git-154)