search for: shared_info

...04 15:10:46.000000000 +0200 +++ 2006-10-04/xen/arch/x86/domain_build.c 2006-10-04 15:11:03.000000000 +0200 @@ -325,6 +325,7 @@ int construct_dom0(struct domain *d, l1_pgentry_t gdt_l1e; set_bit(_DOMF_compat, &d->domain_flags); + v->vcpu_info = (void *)&d->shared_info->compat.vcpu_info[0]; if ( nr_pages != (unsigned int)nr_pages ) nr_pages = UINT_MAX; @@ -735,7 +736,7 @@ int construct_dom0(struct domain *d, /* Mask all upcalls... */ for ( i = 0; i < MAX_VIRT_CPUS; i++ ) - d->shared_info->vcpu_info[i].evtchn_...

Hi all. I am trying to debug a kernel that I built, and I hope I could see some debug info printing out via XENPRINTF. I use it in the source code of kernel like: XENPRINTF("nr_pages: %ld shared_info: 0x%lx flags: 0x%lx pt_base: 0x%lx " "mod_start: 0x%lx mod_len: 0x%lx\n", xen_start_info->nr_pages, xen_start_info->shared_info, xen_start_info->flags, xen_start_info->pt_base, xen_start_info->mod_start, xen_start_info->mod_len); But it doesn'...

Hi all. I am trying to debug a kernel that I built, and I hope I could see some debug info printing out via XENPRINTF. I use it in the source code of kernel like: XENPRINTF("nr_pages: %ld shared_info: 0x%lx flags: 0x%lx pt_base: 0x%lx " "mod_start: 0x%lx mod_len: 0x%lx\n", xen_start_info->nr_pages, xen_start_info->shared_info, xen_start_info->flags, xen_start_info->pt_base, xen_start_info->mod_start, xen_start_info->mod_len); But it doesn'...

...changed, 4 insertions(+), 4 deletions(-) diff --git a/xen/arch/arm/domain.c b/xen/arch/arm/domain.c index 5702399..4b38790 100644 --- a/xen/arch/arm/domain.c +++ b/xen/arch/arm/domain.c @@ -201,6 +201,9 @@ int arch_domain_create(struct domain *d, unsigned int domcr_flags) clear_page(d->shared_info); share_xen_page_with_guest( virt_to_page(d->shared_info), d, XENSHARE_writable); + + if ( (rc = p2m_alloc_table(d)) != 0 ) + goto fail; } d->max_vcpus = 8; diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 156...

...if ( frc != 0 ) + { + ERROR("Unable to set flag of restore."); + goto out; + } if ( read_exact(io_fd, &p2m_size, sizeof(unsigned long)) ) { @@ -1120,6 +1130,8 @@ /* restore saved vcpu_info and arch specific info */ MEMCPY_FIELD(new_shared_info, old_shared_info, vcpu_info); + MEMCPY_FIELD(new_shared_info, old_shared_info, wc_nsec); + MEMCPY_FIELD(new_shared_info, old_shared_info, wc_sec); MEMCPY_FIELD(new_shared_info, old_shared_info, arch); /* clear any pending events and the selector */ diff -r a5ed0dbc829f xen/arch/x8...

I''m having trouble switching into user mode with my domU kernel -- everytime I call __HYPERVISOR_iret, the hypervisor calls into my kernel via the registered callback handler. None of the bits in the event channel pending arrays are set. If I return via the iret call, the hypervisor immediately calls back into the handler. The user RIP never changes, so it is clearly not making forward

On Mon, 6 May 2013, Chen Baozi wrote: > On Mar 25, 2013, at 6:00 PM, Stefano Stabellini <Stefano.Stabellini@eu.citrix.com> wrote: > > > On Sun, 24 Mar 2013, Chen Baozi wrote: > >> Hi all, > >> > >> I''m reading Mini-OS''s codes and to estimate the amount of work porting it to > >> ARM (Ian''s GSoC idea this year). >

...ry 1st 1970) instead of at boot time - this may require some magic to sync_cmos_clock(), sync_xen_wallclock() and/or other functions so dom0 does not get too confused while changing the time during bootup 2) have time_init() and time_resume() calculate the hypervisor boot time from the shared_info ->wc_sec ->wc_nsec and the shared_info->per cpu vcpu_info->system_time -- if the host boot time changes (by more than a second?) adjust some local offset that we add into get_nsec_offset() and get_usec_offset() to always adjust the time right 3) get_time_values_from_xen() a...

Hi, After installing Rtools 3.1.0.1939 into c:\rtools31, when I call any (most?) of the commands in c:\rtools31\bin, I see strange messages printed to stderr. Example: C:\Rtools31>bin\tar 0 [main] tar 6084 shared_info::initialize: size of shared memory region changed from 27984 to 21136 bin/tar: You must specify one of the `-Acdtrux' options Try `bin/tar --help' or `bin/tar --usage' for more information. Sometimes I see quite a few of these just from running a single command. Can this be fixed? T...

...--- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1166,6 +1166,10 @@ asmlinkage void __init xen_start_kernel(void) */ xen_setup_stackprotector(); + /* Don''t do the full vcpu_info placement stuff until we have a + possible map and a non-dummy shared_info. */ + per_cpu(xen_vcpu, 0) = &HYPERVISOR_shared_info->vcpu_info[0]; + xen_init_irq_ops(); xen_init_cpuid_mask(); @@ -1207,9 +1211,6 @@ asmlinkage void __init xen_start_kernel(void) __supported_pte_mask &= ~(_PAGE_PWT | _PAGE_PCD); __support...

...(d->grant_table) ) mfn = virt_to_mfn(d->grant_table->shared_raw[idx]); + else + return -EINVAL; } d->arch.grant_table_gpfn[idx] = gpfn; @@ -999,6 +1003,8 @@ static int xenmem_add_to_physmap_one( case XENMAPSPACE_shared_info: if ( idx == 0 ) mfn = virt_to_mfn(d->shared_info); + else + return -EINVAL; break; case XENMAPSPACE_gmfn_foreign: { -- 1.8.3.1

...} if ( read_exact(io_fd, &p2m_size, sizeof(unsigned long)) ) { @@ -1120,6 +1130,8 @@ /* restore saved vcpu_info and arch specific info */ MEMCPY_FIELD(new_shared_info, old_shared_info, vcpu_info); + MEMCPY_FIELD(new_shared_info, old_shared_info, wc_nsec); + MEMCPY_FIELD(new_shared_info, old_shared_info, wc_sec); MEMCPY_FIELD(new_shared_info,...

Modify the cpufreq ondemand governor so that it can get idle and total ticks from the Xen hypervisor. Linux and Xen have different ideas of what an idle tick is, so the Xen values for both have to be returned in the same platform hypercall. Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com> diff -r b4278beaf354 xen/arch/x86/platform_hypercall.c --- a/xen/arch/x86/platform_hypercall.c

...addresses pointing into the initial mapping to the just-established permanent ones. */ @@ -739,6 +773,24 @@ void __meminit init_memory_mapping(unsig for (; start < end; start += PAGE_SIZE) WARN_ON(HYPERVISOR_update_va_mapping( start, __pte_ma(0), 0)); + + /* Switch to the real shared_info page, and clear the + * dummy page. */ + set_fixmap(FIX_SHARED_INFO, xen_start_info->shared_info); + HYPERVISOR_shared_info = (shared_info_t *)fix_to_virt(FIX_SHARED_INFO); + memset(empty_zero_page, 0, sizeof(empty_zero_page)); + + /* Setup mapping of lower 1st MB */ + for (next = 0; next...

...box. I overcame vcpu_info[MAX_VIRT_CPUS] by doing vcpu placement hypercall in guest, but now running into evt channel limit (lots of devices): unsigned long evtchn_pending[sizeof(unsigned long) * 8]; which limits to 512 max for my 64bit dom0. The only recourse seems to create a new struct shared_info_v2{}, and re-arrange it a bit with lot more event channels. Since, start_info has magic with version info, I can just check that in guest and use new shared_info...(doing the design on the fly here). I can create a new vcpuop saying the guest is using newer version. Or forget new version of sh...

Hi all. I''m now try to read and write puseud physical memory of domU from Dom0 with xenaccess(this is using libxc). #http://xenaccess.sourceforge.net/ With xenaccess, I''m succeeded read and writing almost of the memory. But It fail when I try to access head 1M region and some bit regions. To be precise, xc_map_foreign_range() of libxc returns error code. **

...is allocated vcpu. Initially during dom0 creation alloc_vcpu is called to create vcpu structs for all the available cpu''s and assigned to dom0. But its not the case for domU creation. 1. So how will dom0 relinquish/share vcpu to/with a newly created domU. Does this happen as part of the shared_info page mapping?? 2. Till the end of DOMCTL_createdomain hypercall d->vcpu is null but by the start of xc_linux_bulid_internal function d->vcpu is pointing to some vcpu. How is this?? 3. As part of the domU config file we can constraint the domU to a specific CPU. How is this achieved unless the...

...m> diff -r 4f838d2ac31a xen/arch/x86/hvm/io.c --- a/xen/arch/x86/hvm/io.c Fri Feb 24 14:41:45 2006 +++ b/xen/arch/x86/hvm/io.c Fri Feb 24 13:38:39 2006 @@ -720,10 +720,8 @@ * Re-set the selector and master flags in case any other notifications * are pending. */ - if ( d->shared_info->evtchn_pending[port/BITS_PER_LONG] ) - set_bit(port/BITS_PER_LONG, &v->vcpu_info->evtchn_pending_sel); - if ( v->vcpu_info->evtchn_pending_sel ) - v->vcpu_info->evtchn_upcall_pending = 1; + set_bit(port/BITS_PER_LONG, &v->vcpu_info->evtchn_pen...

...xc/xc_linux_build.c xen-unstable-working/tools/libxc/xc_linux_build.c --- xen-unstable/tools/libxc/xc_linux_build.c 2005-05-24 13:10:24.000000000 +1000 +++ xen-unstable-working/tools/libxc/xc_linux_build.c 2005-05-31 17:44:08.000000000 +1000 @@ -50,7 +50,8 @@ unsigned long shared_info_frame, unsigned int control_evtchn, unsigned long flags, - unsigned int vcpus) + unsigned int vcpus, + unsigned int store_evtchn, unsigned long *store_mfn) { l1_pgentry_...

...+unsigned long mfn_zero; extern char stack[]; extern void page_walk(unsigned long virt_addr); @@ -492,10 +493,13 @@ static void clear_bootstrap(void) static void clear_bootstrap(void) { struct xen_memory_reservation reservation; - xen_pfn_t mfns[] = { virt_to_mfn(0), virt_to_mfn(&shared_info) }; + xen_pfn_t mfns[] = { virt_to_mfn(&shared_info) }; int n = sizeof(mfns)/sizeof(*mfns); pte_t nullpte = { }; + /* Use page 0 as the CoW zero page */ + memset(NULL, 0, PAGE_SIZE); + mfn_zero = pfn_to_mfn(0); if (HYPERVISOR_update_va_mapping(0, nullpte, UVMF_INVLP...