On 19/08/2015 20:55, Wanpeng Li wrote:
>> The disadvantage is that it adds an overhead of one bit check for all
>> kernel exits. A quick tracing shows that the ratio of userspace exits
>> after boot is about 1/5 and in subsequent run of nmap and kernel compile
>> has about 1/60, so the check
On 19/08/2015 20:55, Wanpeng Li wrote:
The disadvantage is that it adds an overhead of one bit check for all
kernel exits. A quick tracing shows that the ratio of userspace exits
after boot is about 1/5 and in subsequent run of nmap and kernel compile
has about 1/60, so the check should not
On 8/14/15 6:08 PM, Radim Krčmář wrote:
When userspace wants KVM to exit to userspace, it sends a signal.
This has a disadvantage of requiring a change to the signal mask because
the signal needs to be blocked in userspace to stay pending when sending
to self.
Using a request flag allows us to
On 8/14/15 6:08 PM, Radim Krčmář wrote:
When userspace wants KVM to exit to userspace, it sends a signal.
This has a disadvantage of requiring a change to the signal mask because
the signal needs to be blocked in userspace to stay pending when sending
to self.
Using a request flag allows us to
When userspace wants KVM to exit to userspace, it sends a signal.
This has a disadvantage of requiring a change to the signal mask because
the signal needs to be blocked in userspace to stay pending when sending
to self.
Using a request flag allows us to shave 200-300 cycles from every
userspace
When userspace wants KVM to exit to userspace, it sends a signal.
This has a disadvantage of requiring a change to the signal mask because
the signal needs to be blocked in userspace to stay pending when sending
to self.
Using a request flag allows us to shave 200-300 cycles from every
userspace
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