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Accelerator patches

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- Extract page-protection definitions to page-protection.h
 - Rework in accel/tcg in preparation of extracting TCG fields from CPUState
 - More uses of get_task_state() in user emulation
 - Xen refactors in preparation for adding multiple map caches (Juergen & Edgar)
 - MAINTAINERS updates (Aleksandar and Bin)
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Merge tag 'accel-20240506' of https://github.com/philmd/qemu into staging

Accelerator patches

- Extract page-protection definitions to page-protection.h
- Rework in accel/tcg in preparation of extracting TCG fields from CPUState
- More uses of get_task_state() in user emulation
- Xen refactors in preparation for adding multiple map caches (Juergen & Edgar)
- MAINTAINERS updates (Aleksandar and Bin)

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* tag 'accel-20240506' of https://github.com/philmd/qemu: (28 commits)
  MAINTAINERS: Update my email address
  MAINTAINERS: Update Aleksandar Rikalo email
  system: Pass RAM MemoryRegion and is_write in xen_map_cache()
  xen: mapcache: Break out xen_map_cache_init_single()
  xen: mapcache: Break out xen_invalidate_map_cache_single()
  xen: mapcache: Refactor xen_invalidate_map_cache_entry_unlocked
  xen: mapcache: Refactor xen_replace_cache_entry_unlocked
  xen: mapcache: Break out xen_ram_addr_from_mapcache_single
  xen: mapcache: Refactor xen_remap_bucket for multi-instance
  xen: mapcache: Refactor xen_map_cache for multi-instance
  xen: mapcache: Refactor lock functions for multi-instance
  xen: let xen_ram_addr_from_mapcache() return -1 in case of not found entry
  system: let qemu_map_ram_ptr() use qemu_ram_ptr_length()
  user: Use get_task_state() helper
  user: Declare get_task_state() once in 'accel/tcg/vcpu-state.h'
  user: Forward declare TaskState type definition
  accel/tcg: Move @plugin_mem_cbs from CPUState to CPUNegativeOffsetState
  accel/tcg: Restrict cpu_plugin_mem_cbs_enabled() to TCG
  accel/tcg: Restrict qemu_plugin_vcpu_exit_hook() to TCG plugins
  accel/tcg: Update CPUNegativeOffsetState::can_do_io field documentation
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2024-05-06 10:19:09 -07:00
commit 873f9ca385
91 changed files with 421 additions and 300 deletions
Download patch file Download diff file Expand all files Collapse all files

38
include/hw/core/cpu.h
View file

@ -345,12 +345,20 @@ typedef union IcountDecr {
} u16;
} IcountDecr;
/*
* Elements of CPUState most efficiently accessed from CPUArchState,
* via small negative offsets.
/**
* CPUNegativeOffsetState: Elements of CPUState most efficiently accessed
* from CPUArchState, via small negative offsets.
* @can_do_io: True if memory-mapped IO is allowed.
* @plugin_mem_cbs: active plugin memory callbacks
*/
typedef struct CPUNegativeOffsetState {
CPUTLB tlb;
#ifdef CONFIG_PLUGIN
/*
* The callback pointer are accessed via TCG (see gen_empty_mem_helper).
*/
GArray *plugin_mem_cbs;
#endif
IcountDecr icount_decr;
bool can_do_io;
} CPUNegativeOffsetState;
@ -407,7 +415,6 @@ struct qemu_work_item;
* @crash_occurred: Indicates the OS reported a crash (panic) for this CPU
* @singlestep_enabled: Flags for single-stepping.
* @icount_extra: Instructions until next timer event.
* @neg.can_do_io: True if memory-mapped IO is allowed.
* @cpu_ases: Pointer to array of CPUAddressSpaces (which define the
* AddressSpaces this CPU has)
* @num_ases: number of CPUAddressSpaces in @cpu_ases
@ -423,7 +430,6 @@ struct qemu_work_item;
* @kvm_fd: vCPU file descriptor for KVM.
* @work_mutex: Lock to prevent multiple access to @work_list.
* @work_list: List of pending asynchronous work.
* @plugin_mem_cbs: active plugin memory callbacks
* @plugin_state: per-CPU plugin state
* @ignore_memory_transaction_failures: Cached copy of the MachineState
* flag of the same name: allows the board to suppress calling of the
@ -518,11 +524,6 @@ struct CPUState {
QemuLockCnt in_ioctl_lock;
#ifdef CONFIG_PLUGIN
/*
* The callback pointer stays in the main CPUState as it is
* accessed via TCG (see gen_empty_mem_helper).
*/
GArray *plugin_mem_cbs;
CPUPluginState *plugin_state;
#endif
@ -1118,23 +1119,6 @@ void cpu_watchpoint_remove_by_ref(CPUState *cpu, CPUWatchpoint *watchpoint);
void cpu_watchpoint_remove_all(CPUState *cpu, int mask);
#endif
/**
* cpu_plugin_mem_cbs_enabled() - are plugin memory callbacks enabled?
* @cs: CPUState pointer
*
* The memory callbacks are installed if a plugin has instrumented an
* instruction for memory. This can be useful to know if you want to
* force a slow path for a series of memory accesses.
*/
static inline bool cpu_plugin_mem_cbs_enabled(const CPUState *cpu)
{
#ifdef CONFIG_PLUGIN
return !!cpu->plugin_mem_cbs;
#else
return false;
#endif
}
/**
* cpu_get_address_space:
* @cpu: CPU to get address space from