082851a3af
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>
113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
#ifndef CPU_COMMON_H
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#define CPU_COMMON_H
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/* CPU interfaces that are target independent. */
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#ifndef CONFIG_USER_ONLY
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#include "exec/hwaddr.h"
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#endif
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/* The CPU list lock nests outside page_(un)lock or mmap_(un)lock */
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void qemu_init_cpu_list(void);
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void cpu_list_lock(void);
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void cpu_list_unlock(void);
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void tcg_flush_softmmu_tlb(CPUState *cs);
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void tcg_iommu_init_notifier_list(CPUState *cpu);
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void tcg_iommu_free_notifier_list(CPUState *cpu);
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#if !defined(CONFIG_USER_ONLY)
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enum device_endian {
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DEVICE_NATIVE_ENDIAN,
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DEVICE_BIG_ENDIAN,
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DEVICE_LITTLE_ENDIAN,
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};
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#if defined(HOST_WORDS_BIGENDIAN)
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#define DEVICE_HOST_ENDIAN DEVICE_BIG_ENDIAN
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#else
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#define DEVICE_HOST_ENDIAN DEVICE_LITTLE_ENDIAN
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#endif
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/* address in the RAM (different from a physical address) */
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#if defined(CONFIG_XEN_BACKEND)
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typedef uint64_t ram_addr_t;
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# define RAM_ADDR_MAX UINT64_MAX
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# define RAM_ADDR_FMT "%" PRIx64
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#else
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typedef uintptr_t ram_addr_t;
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# define RAM_ADDR_MAX UINTPTR_MAX
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# define RAM_ADDR_FMT "%" PRIxPTR
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#endif
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/* memory API */
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void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
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/* This should not be used by devices. */
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ram_addr_t qemu_ram_addr_from_host(void *ptr);
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RAMBlock *qemu_ram_block_by_name(const char *name);
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RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset,
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ram_addr_t *offset);
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ram_addr_t qemu_ram_block_host_offset(RAMBlock *rb, void *host);
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void qemu_ram_set_idstr(RAMBlock *block, const char *name, DeviceState *dev);
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void qemu_ram_unset_idstr(RAMBlock *block);
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const char *qemu_ram_get_idstr(RAMBlock *rb);
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void *qemu_ram_get_host_addr(RAMBlock *rb);
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ram_addr_t qemu_ram_get_offset(RAMBlock *rb);
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ram_addr_t qemu_ram_get_used_length(RAMBlock *rb);
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ram_addr_t qemu_ram_get_max_length(RAMBlock *rb);
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bool qemu_ram_is_shared(RAMBlock *rb);
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bool qemu_ram_is_uf_zeroable(RAMBlock *rb);
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void qemu_ram_set_uf_zeroable(RAMBlock *rb);
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bool qemu_ram_is_migratable(RAMBlock *rb);
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void qemu_ram_set_migratable(RAMBlock *rb);
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void qemu_ram_unset_migratable(RAMBlock *rb);
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size_t qemu_ram_pagesize(RAMBlock *block);
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size_t qemu_ram_pagesize_largest(void);
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void cpu_physical_memory_rw(hwaddr addr, void *buf,
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hwaddr len, bool is_write);
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static inline void cpu_physical_memory_read(hwaddr addr,
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void *buf, hwaddr len)
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{
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cpu_physical_memory_rw(addr, buf, len, false);
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}
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static inline void cpu_physical_memory_write(hwaddr addr,
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const void *buf, hwaddr len)
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{
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cpu_physical_memory_rw(addr, (void *)buf, len, true);
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}
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void *cpu_physical_memory_map(hwaddr addr,
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hwaddr *plen,
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bool is_write);
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void cpu_physical_memory_unmap(void *buffer, hwaddr len,
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bool is_write, hwaddr access_len);
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void cpu_register_map_client(QEMUBH *bh);
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void cpu_unregister_map_client(QEMUBH *bh);
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bool cpu_physical_memory_is_io(hwaddr phys_addr);
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/* Coalesced MMIO regions are areas where write operations can be reordered.
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* This usually implies that write operations are side-effect free. This allows
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* batching which can make a major impact on performance when using
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* virtualization.
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*/
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void qemu_flush_coalesced_mmio_buffer(void);
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void cpu_flush_icache_range(hwaddr start, hwaddr len);
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typedef int (RAMBlockIterFunc)(RAMBlock *rb, void *opaque);
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int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
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int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length);
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#endif
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/* vl.c */
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extern int singlestep;
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#endif /* CPU_COMMON_H */
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