search for: gnttab_copy

...ude/asm/mm.h: 189:d0 Error pfn 30e290: rd=ffff830000fcf100, od=ffff830000fcf100, caf=00000000, taf=0000000000000000 (XEN) Xen call trace: (XEN) [<ffff83000010f240>] get_page+0x107/0x1b4 (XEN) [<ffff83000010f10a>] get_page_and_type+0x21/0x50 (XEN) [<ffff8300001116c4>] __gnttab_copy+0x3f5/0x5b4 (XEN) [<ffff830000111971>] gnttab_copy+0xee/0x1c4 (XEN) [<ffff830000111dbd>] do_grant_table_op+0x376/0x3bc (XEN) [<ffff8300001b83e2>] syscall_enter+0xa2/0xfc (XEN) (XEN) Guest stack trace from rbp=ffff830000ff3cf8: (XEN) ???????????????? <G><2>gra...

...th each physical CPU. With the patchset, the performance is 2x of the original throughput. Case 2: Dom0 has 4 vcpus pinned with 4 physical CPUs. With the patchset, the performance is 3.7x of the original throughput. when we test this patch, we found that the domain_lock in grant table operation (gnttab_copy()) becomes a bottle neck. We temporarily remove the global domain_lock to achieve good performance. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

...>credit_timeout.data = + (unsigned long)vif; + vif->credit_timeout.function = + tx_credit_callback; + mod_timer(&vif->credit_timeout, + next_credit); + + return true; + } + + return false; +} + static unsigned xen_netbk_tx_build_gops(struct xen_netbk *netbk) { struct gnttab_copy *gop = netbk->tx_copy_ops, *request_gop; @@ -1470,6 +1508,13 @@ static unsigned xen_netbk_tx_build_gops(struct xen_netbk *netbk) rmb(); /* Ensure that we see the request before we copy it. */ memcpy(&txreq, RING_GET_REQUEST(&vif->tx, idx), sizeof(txreq)); + /* pps-based sched...

When counting required slots for skb, netback directly uses DIV_ROUND_UP to get slots required by header data. This is wrong when offset in the page of header data is not zero, and is also inconsistent with following calculation for required slot in netbk_gop_skb. In netbk_gop_skb, required slots are calculated based on offset and len in page of header data. It is possible that required slots

...T_REQUEST(&vif->rx, vif->rx.req_cons++); meta = npo->meta + npo->meta_prod++; + meta->gso_type = 0; meta->gso_size = 0; meta->size = 0; meta->id = req->id; @@ -334,6 +335,7 @@ static void xenvif_gop_frag_copy(struct xenvif *vif, struct sk_buff *skb, struct gnttab_copy *copy_gop; struct xenvif_rx_meta *meta; unsigned long bytes; + int gso_type; /* Data must not cross a page boundary. */ BUG_ON(size + offset > PAGE_SIZE<<compound_order(page)); @@ -392,7 +394,14 @@ static void xenvif_gop_frag_copy(struct xenvif *vif, struct sk_buff *skb, }...

Hi Jeremy. According to your suggestion, I recreated patches for Ingo's x86.git tree. And this patch series includes Eddie's modification. Please review and forward them. (or push back to respin.) Recently the xen-ia64 community started to make efforts to merge xen/ia64 Linux to upstream. The first step is to merge up domU portion. This patchset is preliminary for xen/ia64 domU linux

Hi Jeremy. According to your suggestion, I recreated patches for Ingo's x86.git tree. And this patch series includes Eddie's modification. Please review and forward them. (or push back to respin.) Recently the xen-ia64 community started to make efforts to merge xen/ia64 Linux to upstream. The first step is to merge up domU portion. This patchset is preliminary for xen/ia64 domU linux

Hi all, this patch series makes the necessary changes to make sure that the current ARM hypercall ABI can be used as-is on 64 bit ARM platforms: - it defines xen_ulong_t as uint64_t on ARM; - it introduces a new macro to handle guest pointers, called XEN_GUEST_HANDLE_PARAM (that has size 4 bytes on aarch and is going to have size 8 bytes on aarch64); - it replaces all the occurrences of

Hi all I''m hacking on a netback trying to identify whether TLB flushes causes heavy performance penalty on Tx path. The hack is quite nasty (you would not want to know, trust me). Basically what is doesn''t is, 1) alter network protocol to pass along mfns instead of grant references, 2) when the backend sees a new mfn, map it RO and cache it in its own address space. With this

Hi all, this patch series makes the necessary changes to make sure that the current ARM hypercall ABI can be used as-is on 64 bit ARM platforms: - it defines xen_ulong_t as uint64_t on ARM; - it introduces a new macro to handle guest pointers, called XEN_GUEST_HANDLE_PARAM (that has size 4 bytes on aarch and is going to have size 8 bytes on aarch64); - it replaces all the occurrences of

Hi. This patchset implements ia64/xen domU support based on ia64/pv_ops frame work which was sent as another patchest. Changes from take 5 are rebased to Linux 2.6.26-rc3, bug fix ivt.S paravirtualization and multi entry point support. I believe these patches can be applied to the linux ia64 repository. This patchset does the followings. - Some preparation work. Mainly importing header files to

Hi. This patchset implements ia64/xen domU support based on ia64/pv_ops frame work which was sent as another patchest. Changes from take 5 are rebased to Linux 2.6.26-rc3, bug fix ivt.S paravirtualization and multi entry point support. I believe these patches can be applied to the linux ia64 repository. This patchset does the followings. - Some preparation work. Mainly importing header files to

Hi. This patchset implements xen/ia64 domU support. Qing He and Eddie Dong also has been woring on pv_ops so that I want to discuss before going further and avoid duplicated work. I suppose that Eddie will also post his own patch. So reviewing both patches, we can reach to better pv_ops interface. - I didn't changed the ia64 intrinsic paravirtulization abi from the last post. Presumably it

Hi. This patchset implements xen/ia64 domU support. Qing He and Eddie Dong also has been woring on pv_ops so that I want to discuss before going further and avoid duplicated work. I suppose that Eddie will also post his own patch. So reviewing both patches, we can reach to better pv_ops interface. - I didn't changed the ia64 intrinsic paravirtulization abi from the last post. Presumably it

Hi. This patchset implements ia64/xen domU support based on ia64/pv_ops frame work which was sent as another patchest. This patchset does the followings. - Some preparation work. Mainly importing header files to define related structures. - Then, define functions related to hypercall which is the way to communicate with Xen hypervisor. - Add some helper functions which is necessary to

Hi. This patchset implements ia64/xen domU support based on ia64/pv_ops frame work which was sent as another patchest. This patchset does the followings. - Some preparation work. Mainly importing header files to define related structures. - Then, define functions related to hypercall which is the way to communicate with Xen hypervisor. - Add some helper functions which is necessary to

Hi. This patchset implements ia64/xen domU support based on ia64/pv_ops frame work which was sent as another patchest. Please review and comments. This patchset does the followings. - Some preparation work. Mainly importing header files to define related structures. - Then, define functions related to hypercall which is the way to communicate with Xen hypervisor. - Add some helper functions

Hi. This patchset implements ia64/xen domU support based on ia64/pv_ops frame work which was sent as another patchest. Please review and comments. This patchset does the followings. - Some preparation work. Mainly importing header files to define related structures. - Then, define functions related to hypercall which is the way to communicate with Xen hypervisor. - Add some helper functions

Hi. This patchset implements ia64/xen domU support based on ia64/pv_ops frame work which was already merged to linux ia64 test branch. This patch is for linux ia64 test branch. This patchset does the followings. - Some preparation work. Mainly importing header files to define related structures. - Then, define functions related to hypercall which is the way to communicate with Xen hypervisor.

Hi. This patchset implements ia64/xen domU support based on ia64/pv_ops frame work which was already merged to linux ia64 test branch. This patch is for linux ia64 test branch. This patchset does the followings. - Some preparation work. Mainly importing header files to define related structures. - Then, define functions related to hypercall which is the way to communicate with Xen hypervisor.