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Dear All, I have tested a few examples of LLVM-JIT Framework on Linux x86 Machine. So generating functions on the fly and then executing them is OK on linux i.e. i686-pc-linux-gnu My question is: Can we use the LLVM-JIT on a baremetal x86 machine ? Actually my target is a virtual machine, and I need some dynamic code generation support. I intend to use LLVM-JIT (if possible) for this purpose. Furthermore if it is possible, then how much effort would be required ? And where should I start looking for doing this kind of port...

...e lseek in that circumstance, but yours does. You just need to implement lseek :) Cheers, James -----Original Message----- From: Mian M. Hamayun [mailto:mian-muhammad.hamayun at imag.fr] Sent: 03 November 2011 15:59 To: James Molloy Cc: llvmdev at cs.uiuc.edu Subject: Re: [LLVMdev] LLVM JIT on a Baremetal x86 Machine !!! Hello James, I hope I will not be disturbing you too much. As I mentioned earlier, I am interested in unhosted (baremetal) x86 environment for LLVM JIT. Let me come to the point straight. I have set the KERNEL_HBC as: set(KERNEL_HBC "/altamaha/home3/hamayun/workspace/horiz...

Hi, I want to use xenoprof to profile the overhead of the hypervisor. I patched the oprofile-0.9.5 using the patch from xenoprof.sourceforge.net Debian GNU/Linux 5.0 (lenny) Xen-4.0.1 + 2.6.32.27 (linux-2.6-pvops.git) Dom0 My platform is Intel(R) Core(TM) i7 CPU 960 @ 3.20GHz My problems are: In Dom0, But hardware performance counters don''t be mounted after initialization

Hi, I want to use xenoprof to profile the overhead of the hypervisor. I patched the oprofile-0.9.5 using the patch from xenoprof.sourceforge.net Debian GNU/Linux 5.0 (lenny) Xen-4.0.1 + 2.6.32.27 (linux-2.6-pvops.git) Dom0 My platform is Intel(R) Core(TM) i7 CPU 960 @ 3.20GHz My problems are: In Dom0, But hardware performance counters don''t be mounted after initialization

...st need to implement lseek :) > > Cheers, > > James > > -----Original Message----- > From: Mian M. Hamayun [mailto:mian-muhammad.hamayun at imag.fr] > Sent: 03 November 2011 15:59 > To: James Molloy > Cc: llvmdev at cs.uiuc.edu > Subject: Re: [LLVMdev] LLVM JIT on a Baremetal x86 Machine !!! > > Hello James, > > I hope I will not be disturbing you too much. As I mentioned earlier, I > am interested in unhosted (baremetal) x86 environment for LLVM JIT. > Let me come to the point straight. > > I have set the KERNEL_HBC as: > set(KERNEL_HBC &gt...

Hi all, I think using code coverage on baremetal has come up once or twice on llvmdev, but I don't think anyone has actually written up how the workflow works, or what issues come up.  This description is based on work done together with my colleague Weiming Zhao. By "baremetal" here, I mean an embedded environment without an...

No luck with qemu-kvm-ev, the behavior is the same. Running perf record -a -g on the baremetal shows that most of the CPU time is in _raw_spin_lock Children Self Command Shared Object Symbol - 93.62% 93.62% qemu-kvm [kernel.kallsyms] [k] _raw_spin_lock - _raw_spin_lock + 45.30% kvm_mmu_s...

Hello, I want to build LLVM/Compiler-rt for baremetal targets like Cortex-M3. By adopting CMake options from http://llvm.1065342.n5.nabble.com/llvm-dev-Compiling-for-baremetal-ARMv4-on-Ubuntu-Linux-tp124226p124500.html, I can only build "libclang_rt.builtins-x86_64.a" in lib/linux, but what I want to build is "libclang_rt.builtins.arm...

..._________________ From: centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> on behalf of Laurentiu Soica <laurentiu at soica.ro> Sent: Wednesday, August 17, 2016 6:38 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Both baremetal and compute ? Are there any other metrics do you consider useful to collect for troubleshooting purposes ? ?n mie., 17 aug. 2016 la 13:04, Boris Derzhavets <bderzhavets at hotmail.com<mailto:bderzhavets at hotmail.com>> a scris: It sounds weird, but attempt to disable KSM and see wou...

...-bounces at centos.org <centos-virt-bounces at centos.org> on behalf of Laurentiu Soica <laurentiu at soica.ro> Sent: Wednesday, August 17, 2016 4:56 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Enabled the logging on both compute and baremetal. Nothing strange in logs: on baremetal : Wed Aug 17 11:51:01 EEST 2016: committed 62310764 free 58501808 Wed Aug 17 11:51:01 EEST 2016: 87025667 < 123574516 and free > 24714903, stop ksm on compute: Wed Aug 17 08:52:52 UTC 2016: committed 24547132 free 76730936 Wed Aug 17 08:52:52 UTC 201...

...lates a subset of the linux kernel. This is how the C standard library etc works. Cheers, James -----Original Message----- From: Mian M. Hamayun [mailto:mian-muhammad.hamayun at imag.fr] Sent: 08 November 2011 15:41 To: James Molloy Cc: llvmdev at cs.uiuc.edu Subject: Re: [LLVMdev] LLVM JIT on a Baremetal x86 Machine !!! Hi James, I have two questions for you. Firstly, what is the role of 'module' in init.cc? I can see that its being treated like it is a 'bytecode' file, as we open it and then pass it to the ByteCoder and eventually construct llvm module from it. Like In file i...

..._____ From: centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> on behalf of Laurentiu Soica <laurentiu at soica.ro> Sent: Tuesday, August 16, 2016 7:16 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Yes. It is on both baremetal and compute node. ?n mar., 16 aug. 2016 la 13:37, Boris Derzhavets <bderzhavets at hotmail.com<mailto:bderzhavets at hotmail.com>> a scris: Is KSM enabled on your Compute Nodes ( presuming CentOS 7.2 on bare metal ) ? ________________________________ From: centos-virt-bounces at...

I''ve been having some fun recently with trying to get a stock upstream kernel working, compiled with support for both baremetal and PV booting. This is with a view to getting a similar configuration into the Xensource automated test setup. Since I''ve just got such a kernel to boot a Fedora 8 PV guest I thought I''d share what I did, as there are a couple of tricks to it. Thanks are due to the guys at Re...

...t;laurentiu at soica.ro<mailto:laurentiu at soica.ro>> Sent: Tuesday, August 16, 2016 3:28 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Hello, The issue reproduced again and it doesn't look like a swap problem. Some details: on the baremetal, from top: top - 08:08:52 up 5 days, 16:43, 3 users, load average: 36.19, 36.05, 36.05 Tasks: 493 total, 1 running, 492 sleeping, 0 stopped, 0 zombie %Cpu(s): 3.5 us, 87.9 sy, 0.0 ni, 8.6 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem : 12357451+total, 14296000 free, 65634428 used, 4...

Hello, What is for you the best GlusterFS scenario in using XenServer (i'm not talking about Xen on a linux but XenServer baremetal) for a web farm (Apache-Tomcat) ? I were thinking of using ZFS as the filesystem for the different nodes. The objectives/needs : * A storage cluster with the capacity equal to at least 1 node(assuming all nodes are the same). * being able to lose/take down any one brick in the cluster at any ti...

...> on behalf of Laurentiu Soica <laurentiu at soica.ro> Sent: Tuesday, August 16, 2016 3:28 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Hello, The issue reproduced again and it doesn't look like a swap problem. Some details: on the baremetal, from top: top - 08:08:52 up 5 days, 16:43, 3 users, load average: 36.19, 36.05, 36.05 Tasks: 493 total, 1 running, 492 sleeping, 0 stopped, 0 zombie %Cpu(s): 3.5 us, 87.9 sy, 0.0 ni, 8.6 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem : 12357451+total, 14296000 free, 65634428 used, 4...

Hello, I'm assessing the work required to enable Safe Stack for a bare metal target. Looking at compiler-rt/lib/safestack/, the current implementation depends on thread support for mutex & storing unsafe stack pointer. It also need several system calls: gettid, tgkill, mmap, munmap, mprotect. Our target doesn't has all underlying support it needs. My question is: what's the

Hello, I have an OpenStack setup in virtual environment on CentOS 7. The baremetal has *nested KVM* enabled and 1 compute node as a VM. Inside the compute node I have multiple VMs running. After about every 3 days the VMs get inaccessible and the compute node reports high CPU usage. The qemu-kvm process for each VM inside the compute node reports full CPU usage. Please help...

Both baremetal and compute ? Are there any other metrics do you consider useful to collect for troubleshooting purposes ? ?n mie., 17 aug. 2016 la 13:04, Boris Derzhavets <bderzhavets at hotmail.com> a scris: > It sounds weird, but attempt to disable KSM and see would it help or no ? > > > --...

...s as well. The log for the working example is attached, just as a reference. Now one more thing, when the build system creates the ISO9660 CD-ROM Image, it executes the following commands: mkdir -p /tmp/hzn/boot mkdir -p /tmp/hzn/kiwi/modules cp /altamaha/home3/hamayun/workspace/horizon/horizon/Baremetal/boot/cdboot.img /tmp/hzn/boot cp embedded /tmp/hzn/kiwi/kernel cp /altamaha/home3/hamayun/workspace/horizon/code-samples/hello_world.hbc /tmp/hzn/kiwi/modules/hbc mkisofs -quiet -J -R -l -b boot/cdboot.img -V Horizon\ CD-ROM -boot-load-size 4 -boot-info-table -no-emul-boot -o cd.img /tmp/hzn...