Commit faa362e3 authored by Peter Xu's avatar Peter Xu Committed by Eduardo Habkost
Browse files

memory: add MemoryRegionIOMMUOps.replay() callback 



Originally we have one memory_region_iommu_replay() function, which is
the default behavior to replay the translations of the whole IOMMU
region. However, on some platform like x86, we may want our own replay
logic for IOMMU regions. This patch adds one more hook for IOMMUOps for
the callback, and it'll override the default if set.

Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
Reviewed-by: default avatar\"Michael S. Tsirkin\" <mst@redhat.com>
Signed-off-by: default avatarPeter Xu <peterx@redhat.com>
Message-Id: <1491562755-23867-6-git-send-email-peterx@redhat.com>
Signed-off-by: default avatarEduardo Habkost <ehabkost@redhat.com>
parent bd2bfa4c

include/exec/memory.h

+2 −0
Original line number Diff line number Diff line
@@ -191,6 +191,8 @@ struct MemoryRegionIOMMUOps { 
    void (*notify_flag_changed)(MemoryRegion *iommu,

                                IOMMUNotifierFlag old_flags,

                                IOMMUNotifierFlag new_flags);

    /* Set this up to provide customized IOMMU replay function */

    void (*replay)(MemoryRegion *iommu, IOMMUNotifier *notifier);

};



typedef struct CoalescedMemoryRange CoalescedMemoryRange;

memory.c

+6 −0
Original line number Diff line number Diff line
@@ -1626,6 +1626,12 @@ void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n, 
    hwaddr addr, granularity;

    IOMMUTLBEntry iotlb;



    /* If the IOMMU has its own replay callback, override */

    if (mr->iommu_ops->replay) {

        mr->iommu_ops->replay(mr, n);

        return;

    }



    granularity = memory_region_iommu_get_min_page_size(mr);



    for (addr = 0; addr < memory_region_size(mr); addr += granularity) {