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Re: [Xen-ia64-devel] [Q] about assign_domain_page_replace

To: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

From: Akio Takebe <takebe_akio@xxxxxxxxxxxxxx>

Date: Mon, 11 Jun 2007 15:55:30 +0900

Cc: xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>

Delivery-date: Sun, 10 Jun 2007 23:54:01 -0700

List-id: Discussion of the ia64 port of Xen <xen-ia64-devel.lists.xensource.com>

Hi, Isaku Thank you for your patch. >On Fri, Jun 08, 2007 at 11:52:30PM +0900, Isaku Yamahata wrote: >> Thank you very much for information. It greatly helped. >> Could you try the attached patch with the previsou patch? >> I hope it fixes the foreign domain page mapping case. >> However there remains the grant table mapping issue. > >When backend maps ring page of frontend domain, >the debug message is printed out. >So only a few messages is okay. >When you tested, did you see only a few messages whose backtrace >includes grant table or many messages? I retried 15165 + test.patch (including your patch). I had the only following message while a booting of domU. But if I do shutdown on the domU, then Hypervisor doesn't panic. The following backtraces include __do_dom0vp_add_physmap(), Is that OK? (XEN) domain.c:536: arch_domain_create:536 domain 1 pervcpu_vhpt 1 (XEN) tlb_track.c:69: allocated 256 num_entries 256 num_free 256 (XEN) tlb_track.c:115: hash 0xf000004084af0000 hash_size 512 (XEN) regionreg.c:193: ### domain f000000007bc4080: rid=80000-c0000 mp_rid=2000 (XEN) domain.c:573: arch_domain_create: domain=f000000007bc4080 (XEN) mfn=0x000000000102003d, old_mfn=0x0000000001020001 (XEN) assign_domain_page_replace: old_mfn->count_info=0 (XEN) assign_domain_page_replace: mfn->count_info=4 (XEN) assign_domain_page_replace: (owner of old_mfn)=NULL (XEN) assign_domain_page_replace: (domain_id of mfn)=1 (XEN) (XEN) Call Trace: (XEN) [<f0000000040ab330>] show_stack+0x80/0xa0 (XEN) sp=f000000007bcfc10 bsp=f000000007bc9598 (XEN) [<f00000000406f7e0>] assign_domain_page_replace+0x2d0/0x3d0 (XEN) sp=f000000007bcfde0 bsp=f000000007bc9540 (XEN) [<f000000004070b70>] __dom0vp_add_physmap+0x330/0x630 (XEN) sp=f000000007bcfde0 bsp=f000000007bc94d8 (XEN) [<f0000000040524c0>] do_dom0vp_op+0x1e0/0x4d0 (XEN) sp=f000000007bcfdf0 bsp=f000000007bc9498 (XEN) [<f000000004002e30>] fast_hypercall+0x170/0x340 (XEN) sp=f000000007bcfe00 bsp=f000000007bc9498 (XEN) vcpu.c:1059:d1 vcpu_get_lrr0: Unmasked interrupts unsupported (XEN) vcpu.c:1068:d1 vcpu_get_lrr1: Unmasked interrupts unsupported (XEN) domain.c:943:d1 Domain set shared_info_va to 0xfffffffffff00000 (XEN) mfn=0x0000000000013402, old_mfn=0x00000000000667bb (XEN) assign_domain_page_replace: old_mfn->count_info=1 (XEN) assign_domain_page_replace: mfn->count_info=3 (XEN) assign_domain_page_replace: (domain_id of old_mfn)=0 (XEN) assign_domain_page_replace: (domain_id of mfn)=1 (XEN) (XEN) Call Trace: (XEN) [<f0000000040ab330>] show_stack+0x80/0xa0 (XEN) sp=f000000007bdfbe0 bsp=f000000007bd9478 (XEN) [<f00000000406f7e0>] assign_domain_page_replace+0x2d0/0x3d0 (XEN) sp=f000000007bdfdb0 bsp=f000000007bd9420 (XEN) [<f000000004070680>] create_grant_host_mapping+0x1d0/0x390 (XEN) sp=f000000007bdfdb0 bsp=f000000007bd93b8 (XEN) [<f000000004021110>] do_grant_table_op+0xcb0/0x3350 (XEN) sp=f000000007bdfdc0 bsp=f000000007bd92b0 (XEN) [<f000000004002e30>] fast_hypercall+0x170/0x340 (XEN) sp=f000000007bdfe00 bsp=f000000007bd92b0 (XEN) mm.c:698:d1 vcpu 0 iip 0xa0000001004fbbc0: bad I/O port access d 1 0x64 (XEN) mfn=0x0000000000060d17, old_mfn=0x0000000000066dfc (XEN) assign_domain_page_replace: old_mfn->count_info=1 (XEN) assign_domain_page_replace: mfn->count_info=3 (XEN) assign_domain_page_replace: (domain_id of old_mfn)=0 (XEN) assign_domain_page_replace: (domain_id of mfn)=1 (XEN) (XEN) Call Trace: (XEN) [<f0000000040ab330>] show_stack+0x80/0xa0 (XEN) sp=f000000007bdfbe0 bsp=f000000007bd9498 (XEN) [<f00000000406f7e0>] assign_domain_page_replace+0x2d0/0x3d0 (XEN) sp=f000000007bdfdb0 bsp=f000000007bd9440 (XEN) [<f000000004070680>] create_grant_host_mapping+0x1d0/0x390 (XEN) sp=f000000007bdfdb0 bsp=f000000007bd93d8 (XEN) [<f000000004021110>] do_grant_table_op+0xcb0/0x3350 (XEN) sp=f000000007bdfdc0 bsp=f000000007bd92d0 (XEN) [<f000000004002e30>] fast_hypercall+0x170/0x340 (XEN) sp=f000000007bdfe00 bsp=f000000007bd92d0 (XEN) mfn=0x00000000000134df, old_mfn=0x0000000000066d42 (XEN) assign_domain_page_replace: old_mfn->count_info=1 (XEN) assign_domain_page_replace: mfn->count_info=3 (XEN) assign_domain_page_replace: (domain_id of old_mfn)=0 (XEN) assign_domain_page_replace: (domain_id of mfn)=1 (XEN) (XEN) Call Trace: (XEN) [<f0000000040ab330>] show_stack+0x80/0xa0 (XEN) sp=f000000007bdfbe0 bsp=f000000007bd9440 (XEN) [<f00000000406f7e0>] assign_domain_page_replace+0x2d0/0x3d0 (XEN) sp=f000000007bdfdb0 bsp=f000000007bd93e0 (XEN) [<f000000004070680>] create_grant_host_mapping+0x1d0/0x390 (XEN) sp=f000000007bdfdb0 bsp=f000000007bd9380 (XEN) [<f000000004021110>] do_grant_table_op+0xcb0/0x3350 (XEN) sp=f000000007bdfdc0 bsp=f000000007bd9278 (XEN) [<f000000004002e30>] fast_hypercall+0x170/0x340 (XEN) sp=f000000007bdfe00 bsp=f000000007bd9278 The backtrace seems to be happend at xen_ia64_dom_fw_map() for boot_param. 111 int 112 xen_ia64_dom_fw_setup(struct xc_dom_image *d, uint64_t brkimm, 113 unsigned long bp_mpa, unsigned long maxmem) 114 { [snip..] 147 /* Create page for boot_param. */ 148 bp = xen_ia64_dom_fw_map(d, bp_mpa); <<<<<HERE 149 if (bp == NULL) { 150 rc = -errno; 151 goto out; 152 } 153 rc = dom_fw_init(d, brkimm, bp, imva_tables_base, 154 (unsigned long)imva_hypercall_base, maxmem); [snip...] 165 166 return rc; 167 } Best Regards, Akio Takebe

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