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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: xen cache colors in ARM
Hi Oleg, On 21/04/2023 14:49, Oleg Nikitenko wrote: > > > > Hello Michal, > > I was not able to enable earlyprintk in the xen for now. > I decided to choose another way. > This is a xen's command line that I found out completely. > > (XEN) $$$$ console=dtuart dtuart=serial0 dom0_mem=1600M dom0_max_vcpus=2 > dom0_vcpus_pin bootscrub=0 vwfi=native sched=null timer_slop=0 Yes, adding a printk() in Xen was also a good idea. > > So you are absolutely right about a command line. > Now I am going to find out why xen did not have the correct parameters from > the device tree. Maybe you will find this document helpful: https://github.com/Xilinx/xen/blob/xlnx_rebase_4.16/docs/misc/arm/device-tree/booting.txt ~Michal > > Regards, > Oleg > > пт, 21 апр. 2023 г. в 11:16, Michal Orzel <michal.orzel@xxxxxxx > <mailto:michal.orzel@xxxxxxx>>: > > > On 21/04/2023 10:04, Oleg Nikitenko wrote: > > > > > > > > Hello Michal, > > > > Yes, I use yocto. > > > > Yesterday all day long I tried to follow your suggestions. > > I faced a problem. > > Manually in the xen config build file I pasted the strings: > In the .config file or in some Yocto file (listing additional Kconfig > options) added to SRC_URI? > You shouldn't really modify .config file but if you do, you should > execute "make olddefconfig" afterwards. > > > > > CONFIG_EARLY_PRINTK > > CONFIG_EARLY_PRINTK_ZYNQMP > > CONFIG_EARLY_UART_CHOICE_CADENCE > I hope you added =y to them. > > Anyway, you have at least the following solutions: > 1) Run bitbake xen -c menuconfig to properly set early printk > 2) Find out how you enable other Kconfig options in your project (e.g. > CONFIG_COLORING=y that is not enabled by default) > 3) Append the following to "xen/arch/arm/configs/arm64_defconfig": > CONFIG_EARLY_PRINTK_ZYNQMP=y > > ~Michal > > > > > Host hangs in build time. > > Maybe I did not set something in the config build file ? > > > > Regards, > > Oleg > > > > чт, 20 апр. 2023 г. в 11:57, Oleg Nikitenko <oleshiiwood@xxxxxxxxx > <mailto:oleshiiwood@xxxxxxxxx> <mailto:oleshiiwood@xxxxxxxxx > <mailto:oleshiiwood@xxxxxxxxx>>>: > > > > Thanks Michal, > > > > You gave me an idea. > > I am going to try it today. > > > > Regards, > > O. > > > > чт, 20 апр. 2023 г. в 11:56, Oleg Nikitenko <oleshiiwood@xxxxxxxxx > <mailto:oleshiiwood@xxxxxxxxx> <mailto:oleshiiwood@xxxxxxxxx > <mailto:oleshiiwood@xxxxxxxxx>>>: > > > > Thanks Stefano. > > > > I am going to do it today. > > > > Regards, > > O. > > > > ср, 19 апр. 2023 г. в 23:05, Stefano Stabellini > <sstabellini@xxxxxxxxxx <mailto:sstabellini@xxxxxxxxxx> > <mailto:sstabellini@xxxxxxxxxx <mailto:sstabellini@xxxxxxxxxx>>>: > > > > On Wed, 19 Apr 2023, Oleg Nikitenko wrote: > > > Hi Michal, > > > > > > I corrected xen's command line. > > > Now it is > > > xen,xen-bootargs = "console=dtuart dtuart=serial0 > dom0_mem=1600M dom0_max_vcpus=2 dom0_vcpus_pin bootscrub=0 vwfi=native > sched=null > > > timer_slop=0 way_size=65536 xen_colors=0-3 > dom0_colors=4-7"; > > > > 4 colors is way too many for xen, just do xen_colors=0-0. > There is no > > advantage in using more than 1 color for Xen. > > > > 4 colors is too few for dom0, if you are giving 1600M of > memory to Dom0. > > Each color is 256M. For 1600M you should give at least 7 > colors. Try: > > > > xen_colors=0-0 dom0_colors=1-8 > > > > > > > > > Unfortunately the result was the same. > > > > > > (XEN) - Dom0 mode: Relaxed > > > (XEN) P2M: 40-bit IPA with 40-bit PA and 8-bit VMID > > > (XEN) P2M: 3 levels with order-1 root, VTCR > 0x0000000080023558 > > > (XEN) Scheduling granularity: cpu, 1 CPU per > sched-resource > > > (XEN) Coloring general information > > > (XEN) Way size: 64kB > > > (XEN) Max. number of colors available: 16 > > > (XEN) Xen color(s): [ 0 ] > > > (XEN) alternatives: Patching with alt table > 00000000002cc690 -> 00000000002ccc0c > > > (XEN) Color array allocation failed for dom0 > > > (XEN) > > > (XEN) **************************************** > > > (XEN) Panic on CPU 0: > > > (XEN) Error creating domain 0 > > > (XEN) **************************************** > > > (XEN) > > > (XEN) Reboot in five seconds... > > > > > > I am going to find out how command line arguments passed > and parsed. > > > > > > Regards, > > > Oleg > > > > > > ср, 19 апр. 2023 г. в 11:25, Oleg Nikitenko > <oleshiiwood@xxxxxxxxx <mailto:oleshiiwood@xxxxxxxxx> > <mailto:oleshiiwood@xxxxxxxxx <mailto:oleshiiwood@xxxxxxxxx>>>: > > > Hi Michal, > > > > > > You put my nose into the problem. Thank you. > > > I am going to use your point. > > > Let's see what happens. > > > > > > Regards, > > > Oleg > > > > > > > > > ср, 19 апр. 2023 г. в 10:37, Michal Orzel > <michal.orzel@xxxxxxx <mailto:michal.orzel@xxxxxxx> > <mailto:michal.orzel@xxxxxxx <mailto:michal.orzel@xxxxxxx>>>: > > > Hi Oleg, > > > > > > On 19/04/2023 09:03, Oleg Nikitenko wrote: > > > > > > > > > > > > > > > > Hello Stefano, > > > > > > > > Thanks for the clarification. > > > > My company uses yocto for image generation. > > > > What kind of information do you need to consult > me in this case ? > > > > > > > > Maybe modules sizes/addresses which were > mentioned by @Julien Grall <mailto:julien@xxxxxxx <mailto:julien@xxxxxxx> > <mailto:julien@xxxxxxx <mailto:julien@xxxxxxx>>> ? > > > > > > Sorry for jumping into discussion, but FWICS the > Xen command line you provided seems to be not the one > > > Xen booted with. The error you are observing most > likely is due to dom0 colors configuration not being > > > specified (i.e. lack of dom0_colors=<> parameter). > Although in the command line you provided, this parameter > > > is set, I strongly doubt that this is the actual > command line in use. > > > > > > You wrote: > > > xen,xen-bootargs = "console=dtuart dtuart=serial0 > dom0_mem=1600M dom0_max_vcpus=2 dom0_vcpus_pin bootscrub=0 vwfi=native > > > sched=null timer_slop=0 way_szize=65536 > xen_colors=0-3 dom0_colors=4-7"; > > > > > > but: > > > 1) way_szize has a typo > > > 2) you specified 4 colors (0-3) for Xen, but the > boot log says that Xen has only one: > > > (XEN) Xen color(s): [ 0 ] > > > > > > This makes me believe that no colors configuration > actually end up in command line that Xen booted with. > > > Single color for Xen is a "default if not > specified" and way size was probably calculated by asking HW. > > > > > > So I would suggest to first cross-check the command > line in use. > > > > > > ~Michal > > > > > > > > > > > > > > Regards, > > > > Oleg > > > > > > > > вт, 18 апр. 2023 г. в 20:44, Stefano Stabellini > <sstabellini@xxxxxxxxxx <mailto:sstabellini@xxxxxxxxxx> > <mailto:sstabellini@xxxxxxxxxx <mailto:sstabellini@xxxxxxxxxx>> > <mailto:sstabellini@xxxxxxxxxx <mailto:sstabellini@xxxxxxxxxx> > <mailto:sstabellini@xxxxxxxxxx <mailto:sstabellini@xxxxxxxxxx>>>>: > > > > > > > > On Tue, 18 Apr 2023, Oleg Nikitenko wrote: > > > > > Hi Julien, > > > > > > > > > > >> This feature has not been merged in Xen > upstream yet > > > > > > > > > > > would assume that upstream + the series > on the ML [1] work > > > > > > > > > > Please clarify this point. > > > > > Because the two thoughts are controversial. > > > > > > > > Hi Oleg, > > > > > > > > As Julien wrote, there is nothing > controversial. As you are aware, > > > > Xilinx maintains a separate Xen tree specific > for Xilinx here: > > > > https://github.com/xilinx/xen > <https://github.com/xilinx/xen> <https://github.com/xilinx/xen > <https://github.com/xilinx/xen>> <https://github.com/xilinx/xen > <https://github.com/xilinx/xen> <https://github.com/xilinx/xen > <https://github.com/xilinx/xen>>> > > > > > > > > and the branch you are using > (xlnx_rebase_4.16) comes from there. > > > > > > > > > > > > Instead, the upstream Xen tree lives here: > > > > > https://xenbits.xen.org/gitweb/?p=xen.git;a=summary > <https://xenbits.xen.org/gitweb/?p=xen.git;a=summary> > <https://xenbits.xen.org/gitweb/?p=xen.git;a=summary > <https://xenbits.xen.org/gitweb/?p=xen.git;a=summary>> > <https://xenbits.xen.org/gitweb/?p=xen.git;a=summary > <https://xenbits.xen.org/gitweb/?p=xen.git;a=summary> > <https://xenbits.xen.org/gitweb/?p=xen.git;a=summary > <https://xenbits.xen.org/gitweb/?p=xen.git;a=summary>>> > > > > > > > > > > > > The Cache Coloring feature that you are > trying to configure is present > > > > in xlnx_rebase_4.16, but not yet present > upstream (there is an > > > > outstanding patch series to add cache > coloring to Xen upstream but it > > > > hasn't been merged yet.) > > > > > > > > > > > > Anyway, if you are using xlnx_rebase_4.16 it > doesn't matter too much for > > > > you as you already have Cache Coloring as a > feature there. > > > > > > > > > > > > I take you are using ImageBuilder to generate > the boot configuration? If > > > > so, please post the ImageBuilder config file > that you are using. > > > > > > > > But from the boot message, it looks like the > colors configuration for > > > > Dom0 is incorrect. > > > > > > > > > > > > > > > >
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