df8df3cb6b
After the guest KVM file descriptor has changed as a part of the process of confidential guest reset mechanism, existing memory needs to be reattached to the new file descriptor. This change adds a helper function ram_block_rebind() for this purpose. The next patch will make use of this function. Signed-off-by: Ani Sinha <anisinha@redhat.com> Link: https://lore.kernel.org/r/20260225035000.385950-5-anisinha@redhat.com Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
57 lines
2.1 KiB
C
57 lines
2.1 KiB
C
/*
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* QEMU physical memory interfaces (target independent).
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef QEMU_SYSTEM_PHYSMEM_H
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#define QEMU_SYSTEM_PHYSMEM_H
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#include "exec/hwaddr.h"
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#include "system/ramlist.h"
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#define DIRTY_CLIENTS_ALL ((1 << DIRTY_MEMORY_NUM) - 1)
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#define DIRTY_CLIENTS_NOCODE (DIRTY_CLIENTS_ALL & ~(1 << DIRTY_MEMORY_CODE))
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bool physical_memory_get_dirty_flag(ram_addr_t addr, unsigned client);
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bool physical_memory_is_clean(ram_addr_t addr);
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uint8_t physical_memory_range_includes_clean(ram_addr_t start,
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ram_addr_t length,
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uint8_t mask);
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void physical_memory_set_dirty_flag(ram_addr_t addr, unsigned client);
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void physical_memory_set_dirty_range(ram_addr_t start, ram_addr_t length,
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uint8_t mask);
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/*
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* Contrary to physical_memory_sync_dirty_bitmap() this function returns
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* the number of dirty pages in @bitmap passed as argument. On the other hand,
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* physical_memory_sync_dirty_bitmap() returns newly dirtied pages that
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* weren't set in the global migration bitmap.
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*/
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uint64_t physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
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ram_addr_t start,
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ram_addr_t pages);
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void physical_memory_dirty_bits_cleared(ram_addr_t start, ram_addr_t length);
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uint64_t physical_memory_test_and_clear_dirty(ram_addr_t start,
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ram_addr_t length,
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unsigned client,
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unsigned long *bmap);
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DirtyBitmapSnapshot *
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physical_memory_snapshot_and_clear_dirty(MemoryRegion *mr, hwaddr offset,
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hwaddr length, unsigned client);
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bool physical_memory_snapshot_get_dirty(DirtyBitmapSnapshot *snap,
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ram_addr_t start,
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ram_addr_t length);
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int ram_block_rebind(Error **errp);
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#endif
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