Re: [PATCH 3/3] KVM: VMX: Allow I/O port 0x80 bypass when userspace prefer

This does seem to allow a DoS from userspace if userspace prefers it. That doesn't seem wise. On Fri, May 11, 2018 at 8:44 AM, Konrad Rzeszutek Wilk wrote: > On Mon, Apr 16, 2018 at 10:46:02PM -0700, Wanpeng Li wrote: >> From: Wanpeng Li >> >> Tim Shearer reported that "There is a guest which is

Re: [PATCH 3/3] KVM: VMX: Allow I/O port 0x80 bypass when userspace prefer

On Mon, Apr 16, 2018 at 10:46:02PM -0700, Wanpeng Li wrote: > From: Wanpeng Li > > Tim Shearer reported that "There is a guest which is running a packet > forwarding app based on the DPDK (dpdk.org). The packet receive routine > writes to 0xc070 using glibc's "outw_p" function which does an add

[PATCH 3/3] KVM: VMX: Allow I/O port 0x80 bypass when userspace prefer

From: Wanpeng Li Tim Shearer reported that "There is a guest which is running a packet forwarding app based on the DPDK (dpdk.org). The packet receive routine writes to 0xc070 using glibc's "outw_p" function which does an additional write to I/O port 80. It does this write for every packet tha