Laszlo, Which kernel version are you using? Yes I indeed used 4.4.1 from ppa wily. I would more likely to assume 4.4.1 has a regression. Will try 4.4 tomorrow.
Thanks a lot for your long mail. Thanks, Ray > 在 2016年3月16日，下午8:38，Laszlo Ersek <[email protected]> 写道： > >> On 03/16/16 01:55, Ni, Ruiyu wrote: >> >> >> Regards, >> Ray >> >> >>> -----Original Message----- >>> From: Paolo Bonzini [mailto:[email protected]] >>> Sent: Wednesday, March 16, 2016 12:06 AM >>> To: Ni, Ruiyu <[email protected]> >>> Cc: Laszlo Ersek <[email protected]>; Justen, Jordan L >>> <[email protected]>; [email protected] >>> <[email protected]> >>> Subject: Re: [edk2] Software SMI STS bit is not set when writing port B2 in >>> QEMU Q35 >>> >>> >>> >>>> On 15/03/2016 16:48, Ni, Ruiyu wrote: >>>> I don't think CSM matters and the bin I am using cannot be >>>> distributed. Does the qemu build steps matters? I ran configure >>>> --target-list=x86_64-softmmu. I traced the code and found the code >>>> hung when SMM is relocating. The code was waiting for mRebased flag >>>> be set. >>> >>> First of all, can you reproduce the problem without CSM? >> >> Yes. I also attached the OVMF_CODE.fd and OVMF_VARS.fd >> (in OVMF.zip). >> Can you help to try whether it can boot to shell in your qemu? >> I can confirm when accel=tcg the OVMF can boot well. >> But when accel=kvm it cannot. >> SMM emulation over KVM has certain requirements for >> HOST PC which I am not aware of? > > Your binary works for me (it boots to the UEFI shell) on KVM. > > As far as I understand, for the host kernel (= KVM), the requirement is > Linux 4.4 or later. > > I'm not using an upstream host kernel; at the moment I'm using one of > Paolo's RHEL-7 backport kernels. So, my testing didn't repeat that part > of your setup. > > I can see from your earlier email that you upgraded your host kernel to > 4.4.1 and you rebooted your PC with it. Is this an upstream kernel that > you built, or is it packaged by Ubuntu? > > As far as I can see, the latest release for Ubuntu 14.04 is 14.04.4. By > default it comes with a 4.2 based kernel: > > https://wiki.ubuntu.com/TrustyTahr/ReleaseNotes#Updated_Packages > > I think something is wrong with your host kernel. Based on the > information available, I cannot decide if it is actually a Ubuntu kernel > that is simply too old, or an upstream 4.4.1 stable kernel release that > you built yourself, and maybe 4.4.1 regressed relative to 4.4.0. > > If you built the host kernel manually, why did you pick 4.4.1 exactly? > As far as I can see, 4.4.5 is also available from stable git: > > http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?h=linux-4.4.y&id=62e21959dc6f25c5fce0c1a0934e4a9d982bf99b > > Hmm, I googled "Ubuntu" and "4.4.1" together, and the only relevant hits > I seem to be getting are from: > > http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.1-wily/ > > I wouldn't recommend using those -- PPA means "Personal Package > Archives", plus the "wily" suffix implies the 15.10 release of Ubuntu, > not 14.04. > > If you insist on using Ubuntu, please at least try 16.04 LTS ("Xenial > Xerus"), which is apparently based on 4.4 *officially*. > > Thanks > Laszlo _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
