Displaying 3 results from an estimated 3 matches for "notifier_multiplier".
2020 May 29
1
[PATCH 4/6] vhost_vdpa: support doorbell mapping via mmap
Given the need for 4K doorbell such that QEMU can easily map, ect, and
assuming that I have a HW device which exposes 2 VQ's, with a notification
area off of BAR3, offset=whatever, notifier_multiplier=4, we don't need to
have 2 x 4K pages mapped into the VM for both doorbells do we? The guest
driver would ring DB0 at BAR4+offset, and DB1 at BAR4+offset+(4*1).
The 4K per DB is useful how? This allows for QEMU trapping of individual
DBs, that can then be used to do what, just forward the DBs...
2020 May 29
12
[PATCH 0/6] vDPA: doorbell mapping
Hi all:
This series introduce basic functionality of doorbell mapping support
for vhost-vDPA. Userspace program may use mmap() to map a the doorbell
of a specific virtqueue into its address space. This is help to reudce
the syscall or vmexit overhead.
A new vdpa_config_ops was introduced to report the location of the
doorbell, vhost_vdpa may then choose to map the doorbell when:
- The doorbell
2020 May 29
12
[PATCH 0/6] vDPA: doorbell mapping
Hi all:
This series introduce basic functionality of doorbell mapping support
for vhost-vDPA. Userspace program may use mmap() to map a the doorbell
of a specific virtqueue into its address space. This is help to reudce
the syscall or vmexit overhead.
A new vdpa_config_ops was introduced to report the location of the
doorbell, vhost_vdpa may then choose to map the doorbell when:
- The doorbell