similar to: question about foreign mapped page

I have installed two CentOS 4.3 boxes with LVS (from http://mirror.centos.org/centos/4/csgfs/ ) but all boxes died withe this error frequently: kernel panic - not syncing: fs/block_dev.c:396: spin_lock (fs/block_dev.c:c0361c0) already locked by fs/block_dev.c/287. I have read from this thread http://threebit.net/mail-archive/centos/msg00243.html that this is an unsolved problem. So i have

Hello, I am hacking on a Mini-OS that is able to run as domain 0 and is able to start a guest (another Mini-OS for now). I was able to get a memory allocated to the guest and am now trying to build its pagetable and after that copy the kernel to the right places. The problem is: Given a machine frame number from a memory frame of the guest, how do I conceptionally map this into

On Thu, 2005-06-16 at 06:17 +0100, Keir Fraser wrote: > > I suggested that we simply mmap /dev/kmem for the xenstored to access > > the domain0 page for the moment. That doesn''t work: we''ll do something > > else. > > Just use xc_map_foreign_range(), as you would for mapping any other > domain''s xenstore page. So here''s my patch

These mappings are in fact special and require special handling in privcmd, which already exists. Failure to mark the PTE as special on arm64 causes all sorts of bad PTE fun. x86 already gets this correct. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: xen-devel@lists.xenproject.org --- arch/arm/xen/enlighten.c |

I got curious how the lld produced gnu hash tables compared to gold. To test that I timed "perf record ninja check-llvm" (just the lit run) in a BUILD_SHARED_LIBS build. The performance was almost identical, so I decided to try sysv versus gnu (both produced by lld). The results are interesting: % grep -v '^#' perf-gnu/perf.report-by-dso-sym | head 38.77% ld-2.24.so

Dear, We released New Xenoppix (based on Xen3.0, CD size). Detail HP http://unit.aist.go.jp/itri/knoppix/xen/index-en.html 670MB knoppix_v4.0.2CD_20050923_xen3.0-20060104+IPAFont_cdsize.iso --------------------------------- # New Features * Xen is updated to version 3.0. * Host-Xenoppix(Knoppix on Domain0) boots Guest-Xenoppix(Knoppix on DomainU) with same kernel and same Root

vm_normal_page() @ linux-2.6-xen-sparse/mm/memory.c ... if (!vma->vm_flags & VM_RESERVED) print_bad_pte(vma, pte, addr); note:VM_RESERVED=0x00080000 This if clause is always false. Should it be "if (!(vma->vm_flags & VM_RESERVED))" ? -- yamahata _______________________________________________ Xen-devel mailing list

I am using Xen 3.0.4 vmx (on Intel VT). I need to map in a foreign page, given its mfn (not gpfn), into dom0. I used to do this quite well with Xen 3.0.2. However, when I ported my code to Xen 3.0.4, things seem to have changed. Does xc_map_foreign_range accept an mfn or a gpfn as its argument? It seems to be accepting gpfn in 3.0.4. Is that true? If so, can anyone please suggest a way for

I am shame to say that I have never met a function whose return value is void*. This is the first time~~~ So, can anyone told me the meaning of the return value of this function -----xc_map_foreign_range? Is it a pointer pointed to a memory area corresponding the machine frame number(the last parameter passed to the function)? And the third parameter named size: the unit of size is in bytes or

Hi: I wanna write code about sharing memory between dom0 and domU, and I decide to use void *xc_map_foreign_range(int xc_handle, unint32_t dom, int size, int port, unsigned long mfn) (this is a function in xenctl.h). My question is : If I wanna map a range of memory in dom0 to domU, how can I　get the value of mfn? and I do not know the port here. Can anybody help me ? Thanks .

On 6/21/20 4:20 PM, Zi Yan wrote: > On 19 Jun 2020, at 17:56, Ralph Campbell wrote: > >> Support transparent huge page migration to ZONE_DEVICE private memory. >> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to >> indicate the huge page was fully mapped by the CPU. >> Export prep_compound_page() so that device drivers can create huge >>

Grant references for the xenstore and xenconsole shared pages exist, but currently only xenstore uses these references. Change the xenconsole daemon to prefer using the grant reference over map_foreign_range when mapping the shared console ring. This allows xenconsoled to be run in a domain other than dom0 if set up correctly - for libxl, the xenstore path /tool/xenconsoled/domid specifies the

Hi there, I ran a test on an Apache server, the workload is a helloworld.c compiled cgi, very simple. OS is SLES 10. The stress tool is ab (apache bench). The performance looks big degration from native to Dom0: Running in prefork mode: Native Dom0 Performance(request/s) 3700 . 650 CPU%

Hi there, I ran a test on an Apache server, the workload is a helloworld.c compiled cgi, very simple. OS is SLES 10. The stress tool is ab (apache bench). The performance looks big degration from native to Dom0: Running in prefork mode: Native Dom0 Performance(request/s) 3700 . 650 CPU%

Hello, I''ve got a big problem when I try to install Zimbra on a xen debian etch vm. Eeek! page_mapcount(page) went negative! (-1) page pfn = 7141 page->flags = 4000083c page->count = 2 page->mapping = cd946510 vma->vm_ops = 0x0 ------------[ cut here ]------------ kernel BUG at mm/rmap.c:669! invalid opcode: 0000 [#1] SMP Pid: 7717, comm: java Not tainted

Update, after few hours of qemu uptime I can see this oreport: CPU: AMD64 family15h, speed 3800 MHz (estimated) Counted CPU_CLK_UNHALTED events (CPU Clocks not Halted) with a unit mask of 0x00 (No unit mask) count 100000 samples % linenr info image name symbol name ------------------------------------------------------------------------------- 385793

Grant references for the xenstore and xenconsole shared pages exist, but currently only xenstore uses these references. Change the xenconsole daemon to prefer using the grant reference over map_foreign_range when mapping the shared console ring. This allows xenconsoled to be run in a domain other than dom0 if set up correctly - for libxl, the xenstore path /tool/xenconsoled/domid specifies the

On 6/22/20 1:10 PM, Zi Yan wrote: > On 22 Jun 2020, at 15:36, Ralph Campbell wrote: > >> On 6/21/20 4:20 PM, Zi Yan wrote: >>> On 19 Jun 2020, at 17:56, Ralph Campbell wrote: >>> >>>> Support transparent huge page migration to ZONE_DEVICE private memory. >>>> A new flag (MIGRATE_PFN_COMPOUND) is added to the input PFN array to >>>>

> On 5/16/19 10:35 PM, Pankaj Gupta wrote: > > Can I take it your reviewed/acked-by? or tested-by tag? for the virtio > > patch :)I don't feel that I have enough expertise to give the reviewed-by > > tag, but you can > take my acked-by + tested-by. > > Acked-by: Jakub Staron <jstaron at google.com> > Tested-by: Jakub Staron <jstaron at google.com>

On Mon, Jun 22, 2020 at 2:53 PM Zi Yan <ziy at nvidia.com> wrote: > > On 22 Jun 2020, at 17:31, Ralph Campbell wrote: > > > On 6/22/20 1:10 PM, Zi Yan wrote: > >> On 22 Jun 2020, at 15:36, Ralph Campbell wrote: > >> > >>> On 6/21/20 4:20 PM, Zi Yan wrote: > >>>> On 19 Jun 2020, at 17:56, Ralph Campbell wrote: > >>>>