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* Merge branch 'master' of ↵Linus Torvalds2007-07-18
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (24 commits) [NETFILTER]: xt_connlimit needs to depend on nf_conntrack [NETFILTER]: ipt_iprange.h must #include <linux/types.h> [IrDA]: Fix IrDA build failure [ATM]: nicstar needs virt_to_bus [NET]: move __dev_addr_discard adjacent to dev_addr_discard for readability [NET]: merge dev_unicast_discard and dev_mc_discard into one [NET]: move dev_mc_discard from dev_mcast.c to dev.c [NETLINK]: negative groups in netlink_setsockopt [PPPOL2TP]: Reset meta-data in xmit function [PPPOL2TP]: Fix use-after-free [PKT_SCHED]: Some typo fixes in net/sched/Kconfig [XFRM]: Fix crash introduced by struct dst_entry reordering [TCP]: remove unused argument to cong_avoid op [ATM]: [idt77252] Rename CONFIG_ATM_IDT77252_SEND_IDLE to not resemble a Kconfig variable [ATM]: [drivers] ioremap balanced with iounmap [ATM]: [lanai] sram_test_word() must be __devinit [ATM]: [nicstar] Replace C code with call to ARRAY_SIZE() macro. [ATM]: Eliminate dead config variable CONFIG_BR2684_FAST_TRANS. [ATM]: Replacing kmalloc/memset combination with kzalloc. [NET]: gen_estimator deadlock fix ...
| * [NETFILTER]: xt_connlimit needs to depend on nf_conntrackCornelia Huck2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With NF_CONNTRACK=n, NETFILTER_XT_MATCH_CONNLIMIT=m I get the following errors on current git: CC [M] net/netfilter/xt_connlimit.o In file included from net/netfilter/xt_connlimit.c:27: include/net/netfilter/nf_conntrack.h:100: error: field 'ct_general' has incomplete type include/net/netfilter/nf_conntrack.h: In function 'nf_ct_get': include/net/netfilter/nf_conntrack.h:164: error: 'const struct sk_buff' has no member named 'nfct' include/net/netfilter/nf_conntrack.h: In function 'nf_ct_put': include/net/netfilter/nf_conntrack.h:171: warning: implicit declaration of function 'nf_conntrack_put' include/net/netfilter/nf_conntrack.h: In function 'nf_ct_is_untracked': include/net/netfilter/nf_conntrack.h:253: error: 'const struct sk_buff' has no member named 'nfct' In file included from net/netfilter/xt_connlimit.c:28: include/net/netfilter/nf_conntrack_core.h: In function 'nf_conntrack_confirm': include/net/netfilter/nf_conntrack_core.h:68: error: 'struct sk_buff' has no member named 'nfct' Adding a dependency in Kconfig fixes this. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [NETFILTER]: ipt_iprange.h must #include <linux/types.h>Adrian Bunk2007-07-18
| | | | | | | | | | | | | | | | | | ipt_iprange.h must #include <linux/types.h> since it uses __be32. This patch fixes kernel Bugzilla #7604. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [IrDA]: Fix IrDA build failureSamuel Ortiz2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When having built-in IrDA, we hit the following error: `irda_sysctl_unregister' referenced in section `.init.text' of net/built-in.o: defined in discarded section `.exit.text' of net/built-in.o `irda_proc_unregister' referenced in section `.init.text' of net/built-in.o: defined in discarded section `.exit.text' of net/built-in.o `irsock_cleanup' referenced in section `.init.text' of net/built-in.o: defined in discarded section `.exit.text' of net/built-in.o `irttp_cleanup' referenced in section `.init.text' of net/built-in.o: defined in discarded section `.exit.text' of net/built-in.o `iriap_cleanup' referenced in section `.init.text' of net/built-in.o: defined in discarded section `.exit.text' of net/built-in.o `irda_device_cleanup' referenced in section `.init.text' of net/built-in.o: defined in discarded section `.exit.text' of net/built-in.o `irlap_cleanup' referenced in section `.init.text' of net/built-in.o: defined in discarded section `.exit.text' of net/built-in.o `irlmp_cleanup' referenced in section `.init.text' of net/built-in.o: defined in discarded section `.exit.text' of net/built-in.o make[1]: *** [.tmp_vmlinux1] Error 1 make: *** [_all] Error 2 This is due to the irda_init fix recently added, where we call __exit routines from an __init one. It is a build failure that I didn't catch because it doesn't show up when building IrDA as a module. My apologies for that. The following patch fixes that failure and is against your net-2.6 tree. I hope it can make it to the merge window, and stable@kernel.org is CCed on this mail. Signed-off-by: Samuel Ortiz <samuel@sortiz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [ATM]: nicstar needs virt_to_busStephen Rothwell2007-07-18
| | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [NET]: move __dev_addr_discard adjacent to dev_addr_discard for readabilityDenis Cheng2007-07-18
| | | | | | | | | | Signed-off-by: Denis Cheng <crquan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [NET]: merge dev_unicast_discard and dev_mc_discard into oneDenis Cheng2007-07-18
| | | | | | | | | | | | | | this two functions could share the dev->_xmit_lock acquired context. Signed-off-by: Denis Cheng <crquan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [NET]: move dev_mc_discard from dev_mcast.c to dev.cDenis Cheng2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Because this function is only called by unregister_netdevice, this moving could make this non-global function static, and also remove its declaration in netdevice.h; Any further, function __dev_addr_discard is also just called by dev_mc_discard and dev_unicast_discard, keeping this two functions both in one c file could make __dev_addr_discard also static and remove its declaration in netdevice.h; Futhermore, the sequential call to dev_unicast_discard and then dev_mc_discard in unregister_netdevice have a similar mechanism that: (netif_tx_lock_bh / __dev_addr_discard / netif_tx_unlock_bh), they should merged into one to eliminate duplicates in acquiring and releasing the dev->_xmit_lock, this would be done in my following patch. Signed-off-by: Denis Cheng <crquan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [NETLINK]: negative groups in netlink_setsockoptJohannes Berg2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | Reading netlink_setsockopt it's not immediately clear why there isn't a bug when you pass in negative numbers, the reason being that the >= comparison is really unsigned although 'val' is signed because nlk->ngroups is unsigned. Make 'val' unsigned too. [ Update the get_user() cast to match. --DaveM ] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [PPPOL2TP]: Reset meta-data in xmit functionPatrick McHardy2007-07-18
| | | | | | | | | | | | | | Reset netfilter data and IP CB, fix dst_entry leak. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [PPPOL2TP]: Fix use-after-freePatrick McHardy2007-07-18
| | | | | | | | | | | | | | Don't use skb->len after passing it to ip_queue_xmit. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [PKT_SCHED]: Some typo fixes in net/sched/KconfigGabriel Craciunescu2007-07-18
| | | | | | | | | | Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [XFRM]: Fix crash introduced by struct dst_entry reorderingPatrick McHardy2007-07-18
| | | | | | | | | | | | | | | | | | | | | | XFRM expects xfrm_dst->u.next to be same pointer as dst->next, which was broken by the dst_entry reordering in commit 1e19e02c~, causing an oops in xfrm_bundle_ok when walking the bundle upwards. Kill xfrm_dst->u.next and change the only user to use dst->next instead. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [TCP]: remove unused argument to cong_avoid opStephen Hemminger2007-07-18
| | | | | | | | | | | | | | | | | | None of the existing TCP congestion controls use the rtt value pased in the ca_ops->cong_avoid interface. Which is lucky because seq_rtt could have been -1 when handling a duplicate ack. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [ATM]: [idt77252] Rename CONFIG_ATM_IDT77252_SEND_IDLE to not resemble a ↵Robert P. J. Day2007-07-18
| | | | | | | | | | | | | | | | Kconfig variable Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: chas williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [ATM]: [drivers] ioremap balanced with iounmapAmol Lad2007-07-18
| | | | | | | | | | | | Signed-off-by: Amol Lad <amol@verismonetworks.com> Signed-off-by: chas williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [ATM]: [lanai] sram_test_word() must be __devinitAdrian Bunk2007-07-18
| | | | | | | | | | | | Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: chas williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [ATM]: [nicstar] Replace C code with call to ARRAY_SIZE() macro.Robert P. J. Day2007-07-18
| | | | | | | | | | | | Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: chas williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [ATM]: Eliminate dead config variable CONFIG_BR2684_FAST_TRANS.Robert P. J. Day2007-07-18
| | | | | | | | | | Signed-off-by: chas williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [ATM]: Replacing kmalloc/memset combination with kzalloc.vignesh babu2007-07-18
| | | | | | | | | | | | Signed-off-by: vignesh babu <vignesh.babu@wipro.com> Signed-off-by: chas williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [NET]: gen_estimator deadlock fixRanko Zivojnovic2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -Fixes ABBA deadlock noted by Patrick McHardy <kaber@trash.net>: > There is at least one ABBA deadlock, est_timer() does: > read_lock(&est_lock) > spin_lock(e->stats_lock) (which is dev->queue_lock) > > and qdisc_destroy calls htb_destroy under dev->queue_lock, which > calls htb_destroy_class, then gen_kill_estimator and this > write_locks est_lock. To fix the ABBA deadlock the rate estimators are now kept on an rcu list. -The est_lock changes the use from protecting the list to protecting the update to the 'bstat' pointer in order to avoid NULL dereferencing. -The 'interval' member of the gen_estimator structure removed as it is not needed. Signed-off-by: Ranko Zivojnovic <ranko@spidernet.net> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [BNX2]: Update version to 1.6.3.Michael Chan2007-07-18
| | | | | | | | | | Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [BNX2]: Use constants for stats ticks.Michael Chan2007-07-18
| | | | | | | | | | | | | | Change all stats related magic numbers to constants. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [BNX2]: Add delay before reading firmware version.Michael Chan2007-07-18
| | | | | | | | | | | | | | | | | | The management firmware may still be loading during bnx2_init_one() because of the D3hot -> D0 transition and the firmware version may not be available without waiting a bit. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [BNX2]: Support NVRAM on 5709.Michael Chan2007-07-18
| | | | | | | | | | | | | | | | | | | | | | The NVRAM interface is slightly modified on the 5709. To properly support it, we need to change the buffered flag in the flash data structure into multiple flags to indicate buffered operation, address translation, and the use of write enable (WREN). The 5709 flash only requires the buffered operation bit to be set. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'master' of ↵Linus Torvalds2007-07-18
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Set vio->desc_buf to NULL after freeing. [SPARC]: Mark sparc and sparc64 as not having virt_to_bus [SPARC64]: Fix reset handling in VNET driver. [SPARC64]: Handle reset events in vio_link_state_change(). [SPARC64]: Handle LDC resets properly in domain-services driver. [SPARC64]: Massively simplify VIO device layer and support hot add/remove. [SPARC64]: Simplify VNET probing. [SPARC64]: Simplify VDC device probing. [SPARC64]: Add basic infrastructure for MD add/remove notification.
| * | [SPARC64]: Set vio->desc_buf to NULL after freeing.David S. Miller2007-07-18
| | | | | | | | | | | | | | | | | | Otherwise we trigger assertions on the next link-up. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC]: Mark sparc and sparc64 as not having virt_to_busStephen Rothwell2007-07-18
| | | | | | | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Fix reset handling in VNET driver.David S. Miller2007-07-18
| | | | | | | | | | | | | | | | | | | | | In vnet_event(), if the channel was reset, try to get the link going again by invoking vio_port_up() after dropping the lock. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Handle reset events in vio_link_state_change().David S. Miller2007-07-18
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Handle LDC resets properly in domain-services driver.David S. Miller2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | Reset the handshake and per-capability state so that when the link comes back up we'll renegotiate the DS version and then reregister all of the services. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Massively simplify VIO device layer and support hot add/remove.David S. Miller2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | Create and destroy VIO devices in response to MD update events. These run synchronously inside of the MD update mutex so the VIO layer doesn't need to do internal locking of any sort. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Simplify VNET probing.David S. Miller2007-07-18
| | | | | | | | | | | | | | | | | | | | | Only probe on the vdc-port VIO devices, create parent vnet objects on-demand. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Simplify VDC device probing.David S. Miller2007-07-18
| | | | | | | | | | | | | | | | | | | | | We just need to match on the vdc-port nodes, the parent is really not interesting at all. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | [SPARC64]: Add basic infrastructure for MD add/remove notification.David S. Miller2007-07-18
| |/ | | | | | | | | | | | | | | And add dummy handlers for the VIO device layer. These will be filled in with real code after the vdc, vnet, and ds drivers are reworked to have simpler dependencies on the VIO device tree. Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'xen-upstream' of ↵Linus Torvalds2007-07-18
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ssh://master.kernel.org/pub/scm/linux/kernel/git/jeremy/xen * 'xen-upstream' of ssh://master.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: (44 commits) xen: disable all non-virtual drivers xen: use iret directly when possible xen: suppress abs symbol warnings for unused reloc pointers xen: Attempt to patch inline versions of common operations xen: Place vcpu_info structure into per-cpu memory xen: handle external requests for shutdown, reboot and sysrq xen: machine operations xen: add virtual network device driver xen: add virtual block device driver. xen: add the Xenbus sysfs and virtual device hotplug driver xen: Add grant table support xen: use the hvc console infrastructure for Xen console xen: hack to prevent bad segment register reload xen: lazy-mmu operations xen: Add support for preemption xen: SMP guest support xen: Implement sched_clock xen: Account for stolen time xen: ignore RW mapping of RO pages in pagetable_init xen: Complete pagetable pinning ...
| * | xen: disable all non-virtual driversJeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | A domU Xen environment has no non-virtual drivers, so make sure they're all disabled at once. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Rusty Russell <rusty@rustcorp.com.au>
| * | xen: use iret directly when possibleJeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Most of the time we can simply use the iret instruction to exit the kernel, rather than having to use the iret hypercall - the only exception is if we're returning into vm86 mode, or from delivering an NMI (which we don't support yet). When running native, iret has the behaviour of testing for a pending interrupt atomically with re-enabling interrupts. Unfortunately there's no way to do this with Xen, so there's a window in which we could get a recursive exception after enabling events but before actually returning to userspace. This causes a problem: if the nested interrupt causes one of the task's TIF_WORK_MASK flags to be set, they will not be checked again before returning to userspace. This means that pending work may be left pending indefinitely, until the process enters and leaves the kernel again. The net effect is that a pending signal or reschedule event could be delayed for an unbounded amount of time. To deal with this, the xen event upcall handler checks to see if the EIP is within the critical section of the iret code, after events are (potentially) enabled up to the iret itself. If its within this range, it calls the iret critical section fixup, which adjusts the stack to deal with any unrestored registers, and then shifts the stack frame up to replace the previous invocation. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
| * | xen: suppress abs symbol warnings for unused reloc pointersJeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/i386/xen/xen-asm.S defines some small pieces of code which are used to implement a few paravirt_ops. They're designed so they can be used either in-place, or be inline patched into their callsites if there's enough space. Some of those operations need to make calls out (specifically, if you re-enable events [interrupts], and there's a pending event at that time). These calls need the call instruction to be relocated if the code is patched inline. In this case xen_foo_reloc is a section-relative symbol which points to xen_foo's required relocation. Other operations have no need of a relocation, and so their corresponding xen_bar_reloc is absolute 0. These are the cases which are triggering the warning. This patch adds those symbols to the list of safe abs symbols. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Adrian Bunk <bunk@stusta.de>
| * | xen: Attempt to patch inline versions of common operationsJeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patchs adds the mechanism to allow us to patch inline versions of common operations. The implementations of the direct-access versions save_fl, restore_fl, irq_enable and irq_disable are now in assembler, and the same code is used for both out of line and inline uses. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Chris Wright <chrisw@sous-sol.org> Cc: Keir Fraser <keir@xensource.com>
| * | xen: Place vcpu_info structure into per-cpu memoryJeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | An experimental patch for Xen allows guests to place their vcpu_info structs anywhere. We try to use this to place the vcpu_info into the PDA, which allows direct access. If this works, then switch to using direct access operations for irq_enable, disable, save_fl and restore_fl. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Chris Wright <chrisw@sous-sol.org> Cc: Keir Fraser <keir@xensource.com>
| * | xen: handle external requests for shutdown, reboot and sysrqJeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | The guest domain can be asked to shutdown or reboot itself, or have a sysrq key injected, via xenbus. This patch adds a watcher for those events, and does the appropriate action. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Chris Wright <chrisw@sous-sol.org>
| * | xen: machine operationsJeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | Make the appropriate hypercalls to halt and reboot the virtual machine. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Acked-by: Chris Wright <chrisw@sous-sol.org>
| * | xen: add virtual network device driverJeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The network device frontend driver allows the kernel to access network devices exported exported by a virtual machine containing a physical network device driver. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Acked-by: Jeff Garzik <jeff@garzik.org> Cc: Ian Pratt <ian.pratt@xensource.com> Cc: Christian Limpach <Christian.Limpach@cl.cam.ac.uk> Cc: Stephen Hemminger <shemminger@linux-foundation.org> Cc: Christoph Hellwig <hch@infradead.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Keir Fraser <Keir.Fraser@cl.cam.ac.uk> Cc: netdev@vger.kernel.org
| * | xen: add virtual block device driver.Jeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The block device frontend driver allows the kernel to access block devices exported exported by a virtual machine containing a physical block device driver. Signed-off-by: Ian Pratt <ian.pratt@xensource.com> Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Greg KH <greg@kroah.com> Cc: Jens Axboe <axboe@kernel.dk>
| * | xen: add the Xenbus sysfs and virtual device hotplug driverJeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This communicates with the machine control software via a registry residing in a controlling virtual machine. This allows dynamic creation, destruction and modification of virtual device configurations (network devices, block devices and CPUS, to name some examples). [ Greg, would you mind giving this a review? Thanks -J ] Signed-off-by: Ian Pratt <ian.pratt@xensource.com> Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk> Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Cc: Greg KH <greg@kroah.com>
| * | xen: Add grant table supportJeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add Xen 'grant table' driver which allows granting of access to selected local memory pages by other virtual machines and, symmetrically, the mapping of remote memory pages which other virtual machines have granted access to. This driver is a prerequisite for many of the Xen virtual device drivers, which grant the 'device driver domain' restricted and temporary access to only those memory pages that are currently involved in I/O operations. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ian Pratt <ian.pratt@xensource.com> Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk> Signed-off-by: Chris Wright <chrisw@sous-sol.org>
| * | xen: use the hvc console infrastructure for Xen consoleJeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement a Xen back-end for hvc console. * * * Add early printk support via hvc console, enable using "earlyprintk=xen" on the kernel command line. From: Gerd Hoffmann <kraxel@suse.de> Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: Olof Johansson <olof@lixom.net>
| * | xen: hack to prevent bad segment register reloadJeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The hypervisor saves and restores the segment registers as part of the state is saves while context switching. If, during a context switch, the next process doesn't use the TLS segments, it invalidates the GDT entry, causing the segment register reload to fault. This fault effectively doubles the cost of a context switch. This patch is a band-aid workaround which clears the usermode %gs after it has been saved for the previous process, but before it gets reloaded for the next, and it avoids having the hypervisor attempt to erroneously reload it. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org>
| * | xen: lazy-mmu operationsJeremy Fitzhardinge2007-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch uses the lazy-mmu hooks to batch mmu operations where possible. This is primarily useful for batching operations applied to active pagetables, which happens during mprotect, munmap, mremap and the like (mmap does not do bulk pagetable operations, so it isn't helped). Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Acked-by: Chris Wright <chrisw@sous-sol.org>
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