Displaying 3 results from an estimated 3 matches for "wmexit".
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vmexit
2020 May 29
0
[PATCH 4/6] vhost_vdpa: support doorbell mapping via mmap
...t of vmexits or syscall. This
>> patch introduces mmap() based doorbell mapping which can eliminate the
>> overhead caused by vmexit or syscall.
>
> Just wondering. I know very little about vdpa. But how is such a "sw
> doorbell" monitored or observed, if no fault or wmexit etc.
> Is there some kind of polling used?
Hi Mika:
It's not a software doorbell. It just allow userspace to map page of
hardware doorbell directly into userspace.
Without this, for KVM, it needs to trap the MMIO access of the guest and
write to eventfd, for other userspace driver, it...
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