On 10/31/2017 7:17 PM, Tan, Jianfeng wrote: > > >> -----Original Message----- >> From: Yigit, Ferruh >> Sent: Wednesday, November 1, 2017 9:07 AM >> To: Thomas Monjalon; Richardson, Bruce; Gonzalez Monroy, Sergio >> Cc: [email protected]; Yigit, Ferruh; Tan, Jianfeng; Santosh Shukla >> Subject: [PATCH] eal: disable IOVA mode detection by default >> >> Fix kernel crash with KNI because KNI requires physical addresses. >> >> A config option introduced to disable IOVA mode detection and to set it >> to physical address by default. Disabling config option will enable IOVA >> mode detection. >> >> When there is no intension to use KNI, it is safe to enable detection. >> >> Config option disable IOVA mode detection by default to be sure only who >> is aware of result enable it. >> >> Fixes: 72d013644bd6 ("mem: honor IOVA mode in malloc virt2phy") >> >> Signed-off-by: Ferruh Yigit <[email protected]> >> --- >> Cc: Jianfeng Tan <[email protected]> >> Cc: Santosh Shukla <[email protected]> >> Cc: Thomas Monjalon <[email protected]> > > Refer to how vhost-kernel works, we may leverage a memory region table to do > the translation. The bad side is it's less efficient than current > phys_to_virt.
Hi Jianfeng, Can you please elaborate? Thanks, ferruh > Another side, we did not check the result of phys_to_virt, that's why kernel > crashes. > > Thanks, > Jianfeng >
