OK, but if so, my suspicious about the performance penalty is wrong, and I don't have any other thought. Do you? > -----Original Message----- > From: Paolo Bonzini [mailto:pbonzini@xxxxxxxxxx] > Sent: Sunday, 17 April, 2016 3:04 PM > To: Eli Britstein; kvm@xxxxxxxxxxxxxxx > Subject: Re: IVSHMEM device performance > > > > On 17/04/2016 09:18, Eli Britstein wrote: > > Attached. Also, if need to change ioremap to ioremap_cache, please > > advise where. I assume in mmap it is already too late. > > No, you need not do that. If memory was uncached, the performance > penalty would be 100x or worse. > > Paolo ------------------------------------------------------------------------------------------------------------------------------------------------- This email and any files transmitted and/or attachments with it are confidential and proprietary information of Toga Networks Ltd., and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information of Toga Networks Ltd., and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. ------------------------------------------------------------------------------------------------------------------------------------------------ -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
