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memory: Add Error** argument to .log_global_start() handler

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Modify all .log_global_start() handlers to take an Error** parameter
and return a bool. Adapt memory_global_dirty_log_start() to interrupt
on the first error the loop on handlers. In such case, a rollback is
performed to stop dirty logging on all listeners where it was
previously enabled.

Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: Paul Durrant <paul@xen.org>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20240320064911.545001-10-clg@redhat.com
[peterx: modify & enrich the comment for listener_add_address_space() ]
Signed-off-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Cédric Le Goater 2024-03-20 07:49:05 +01:00 • committed by Peter Xu
parent e4fa064d56
commit 3688fec892
5 changed files with 50 additions and 6 deletions
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5
include/exec/memory.h
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@ -998,8 +998,11 @@ struct MemoryListener {
* active at that time.
*
* @listener: The #MemoryListener.
* @errp: pointer to Error*, to store an error if it happens.
*
* Return: true on success, else false setting @errp with error.
*/
void (*log_global_start)(MemoryListener *listener);
bool (*log_global_start)(MemoryListener *listener, Error **errp);
/**
* @log_global_stop: