Re: [Qemu-devel] [PATCH v2] ivshmem: add a new PIO BAR3(Doorbell) besides MMIO BAR0 to reduce notification time

2011-11-28 Thread Cam Macdonell
On Thu, Nov 17, 2011 at 10:50 PM, zanghongy...@huawei.com wrote: From: Hongyong Zang zanghongy...@huawei.com This patch, adds a PIO BAR3 for guest notifying qemu. And we find the new notification way of PIO BAR3 reduces 30% time in comparison with the original MMIO BAR0 way. Come to think

Re: [Qemu-devel] [PATCH v2] ivshmem: add a new PIO BAR3(Doorbell) besides MMIO BAR0 to reduce notification time

2011-11-28 Thread Zang Hongyong
于 2011/11/29,星期二 14:38, Cam Macdonell 写道: On Thu, Nov 17, 2011 at 10:50 PM,zanghongy...@huawei.com wrote: From: Hongyong Zangzanghongy...@huawei.com This patch, adds a PIO BAR3 for guest notifying qemu. And we find the new notification way of PIO BAR3 reduces 30% time in comparison with the

Re: [Qemu-devel] [PATCH v2] ivshmem: add a new PIO BAR3(Doorbell) besides MMIO BAR0 to reduce notification time

2011-11-20 Thread Avi Kivity
On 11/18/2011 07:50 AM, zanghongy...@huawei.com wrote: From: Hongyong Zang zanghongy...@huawei.com This patch, adds a PIO BAR3 for guest notifying qemu. And we find the new notification way of PIO BAR3 reduces 30% time in comparison with the original MMIO BAR0 way. Please update the spec,

[Qemu-devel] [PATCH v2] ivshmem: add a new PIO BAR3(Doorbell) besides MMIO BAR0 to reduce notification time

2011-11-17 Thread zanghongyong
From: Hongyong Zang zanghongy...@huawei.com This patch, adds a PIO BAR3 for guest notifying qemu. And we find the new notification way of PIO BAR3 reduces 30% time in comparison with the original MMIO BAR0 way. Signed-off-by: Hongyong Zang zanghongy...@huawei.com --- hw/ivshmem.c | 24