| Age | Commit message (Collapse) | Author | Files | Lines | |
|---|---|---|---|---|---|
| 2020-11-16 | util/vfio-helpers.c: Use ram_block_discard_disable() in qemu_vfio_open_pci() | David Hildenbrand | 1 | -0/+6 | |
| Currently, when using "nvme://" for a block device, like -drive file=nvme://0000:01:00.0/1,if=none,id=drive0 \ -device virtio-blk,drive=drive0 \ VFIO may pin all guest memory, and discarding of RAM no longer works as expected. I was able to reproduce this easily with my 01:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983 Similar to common VFIO, we have to disable it, making sure that: a) virtio-balloon won't discard any memory ("silently disabled") b) virtio-mem and nvme:// run mutually exclusive Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Alex Williamson <alex.williamson@redhat.com> Cc: Wei Yang <richardw.yang@linux.intel.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20201116105947.9194-1-david@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> | |||||
| 2019-03-06 | exec: Change RAMBlockIterFunc definition | Yury Kotov | 1 | -0/+15 | |
| Currently, qemu_ram_foreach_* calls RAMBlockIterFunc with many block-specific arguments. But often iter func needs RAMBlock*. This refactoring is needed for fast access to RAMBlock flags from qemu_ram_foreach_block's callback. The only way to achieve this now is to call qemu_ram_block_from_host (which also enumerates blocks). So, this patch reduces complexity of qemu_ram_foreach_block() -> cb() -> qemu_ram_block_from_host() from O(n^2) to O(n). Fix RAMBlockIterFunc definition and add some functions to read RAMBlock* fields witch were passed. Signed-off-by: Yury Kotov <yury-kotov@yandex-team.ru> Message-Id: <20190215174548.2630-2-yury-kotov@yandex-team.ru> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> | |||||
| 2018-02-08 | stubs: Add stubs for ram block API | Fam Zheng | 1 | -0/+16 | |
| These functions will be wanted by block-obj-y but the actual definition is in obj-y, so stub them to keep the linker happy. Signed-off-by: Fam Zheng <famz@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20180110091846.10699-2-famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> | |||||
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