aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/virtual/lguest (follow)
AgeCommit message (Collapse)AuthorFilesLines
2011-09-27doc: fix broken referencesPaul Bolle1-1/+1
There are numerous broken references to Documentation files (in other Documentation files, in comments, etc.). These broken references are caused by typo's in the references, and by renames or removals of the Documentation files. Some broken references are simply odd. Fix these broken references, sometimes by dropping the irrelevant text they were part of. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-08-15lguest: allow booting guest with CONFIG_RELOCATABLE=yRusty Russell1-0/+3
The CONFIG_RELOCATABLE code tries to align the unpack destination to the value of 'kernel_alignment' in the setup_hdr. If that's 0, it tries to unpack to address 0, which in fact causes the gunzip code to call 'error("Out of memory while allocating output buffer")'. The bootloader (ie. the lguest Launcher in this case) should be doing setting this field; the normal bzImage is 16M, we can use the same. Reported-by: Stefanos Geraggelos <sgerag@cslab.ece.ntua.gr> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: stable@kernel.org
2011-07-22lguest: update commentsRusty Russell1-8/+4
Also removes a long-unused #define and an extraneous semicolon. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2011-07-22lguest: Simplify device initialization.Rusty Russell1-19/+6
We used to notify the Host every time we updated a device's status. However, it only really needs to know when we're resetting the device, or failed to initialize it, or when we've finished our feature negotiation. In particular, we used to wait for VIRTIO_CONFIG_S_DRIVER_OK in the status byte before starting the device service threads. But this corresponds to the successful finish of device initialization, which might (like virtio_blk's partition scanning) use the device. So we had a hack, if they used the device before we expected we started the threads anyway. Now we hook into the finalize_features hook in the Guest: at that point we tell the Launcher that it can rely on the features we have acked. On the Launcher side, we look at the status at that point, and start servicing the device. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2011-07-22lguest: Do not exit on non-fatal errorsSakari Ailus1-4/+6
Do not exit on some non-fatal errors: - writev() fails in net_output(). The result is a lost packet or packets. - writev() fails in console_output(). The result is partially lost console output. - readv() fails in net_input(). The result is a lost packet or packets. Rather than bringing the guest down, this patch ignores e.g. an allocation failure on the host side. Example: lguest: page allocation failure. order:4, mode:0x4d0 Pid: 4045, comm: lguest Tainted: G W 2.6.36 #1 Call Trace: [<c138d614>] ? printk+0x18/0x1c [<c106a4e2>] __alloc_pages_nodemask+0x4d2/0x570 [<c1087954>] cache_alloc_refill+0x2a4/0x4d0 [<c1305149>] ? __netif_receive_skb+0x189/0x270 [<c1087c5a>] __kmalloc+0xda/0xf0 [<c12fffa5>] __alloc_skb+0x55/0x100 [<c1305519>] ? net_rx_action+0x79/0x100 [<c12fafed>] sock_alloc_send_pskb+0x18d/0x280 [<c11fda25>] ? _copy_from_user+0x35/0x130 [<c13010b6>] ? memcpy_fromiovecend+0x56/0x80 [<c12a74dc>] tun_chr_aio_write+0x1cc/0x500 [<c108a125>] do_sync_readv_writev+0x95/0xd0 [<c11fda25>] ? _copy_from_user+0x35/0x130 [<c1089fa8>] ? rw_copy_check_uvector+0x58/0x100 [<c108a7bc>] do_readv_writev+0x9c/0x1d0 [<c12a7310>] ? tun_chr_aio_write+0x0/0x500 [<c108a93a>] vfs_writev+0x4a/0x60 [<c108aa21>] sys_writev+0x41/0x80 [<c138f061>] syscall_call+0x7/0xb Mem-Info: DMA per-cpu: CPU 0: hi: 0, btch: 1 usd: 0 Normal per-cpu: CPU 0: hi: 186, btch: 31 usd: 0 HighMem per-cpu: CPU 0: hi: 186, btch: 31 usd: 0 active_anon:134651 inactive_anon:50543 isolated_anon:0 active_file:96881 inactive_file:132007 isolated_file:0 unevictable:0 dirty:3 writeback:0 unstable:0 free:91374 slab_reclaimable:6300 slab_unreclaimable:2802 mapped:2281 shmem:9 pagetables:330 bounce:0 DMA free:3524kB min:64kB low:80kB high:96kB active_anon:0kB inactive_anon:8kB active_file:8760kB inactive_file:2760kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15868kB mlocked:0kB dirty:0kB writeback:0kB mapped:16kB shmem:0kB slab_reclaimable:88kB slab_unreclaimable:148kB kernel_stack:40kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 865 2016 2016 Normal free:150100kB min:3728kB low:4660kB high:5592kB active_anon:6224kB inactive_anon:15772kB active_file:324084kB inactive_file:325944kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:885944kB mlocked:0kB dirty:12kB writeback:0kB mapped:1520kB shmem:0kB slab_reclaimable:25112kB slab_unreclaimable:11060kB kernel_stack:1888kB pagetables:1320kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 9207 9207 HighMem free:211872kB min:512kB low:1752kB high:2992kB active_anon:532380kB inactive_anon:186392kB active_file:54680kB inactive_file:199324kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:1178504kB mlocked:0kB dirty:0kB writeback:0kB mapped:7588kB shmem:36kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 DMA: 3*4kB 65*8kB 35*16kB 18*32kB 11*64kB 9*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 3524kB Normal: 35981*4kB 344*8kB 158*16kB 28*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 150100kB HighMem: 5732*4kB 5462*8kB 2826*16kB 1598*32kB 84*64kB 10*128kB 7*256kB 1*512kB 1*1024kB 1*2048kB 9*4096kB = 211872kB 231237 total pagecache pages 2340 pages in swap cache Swap cache stats: add 160060, delete 157720, find 189017/194106 Free swap = 4179840kB Total swap = 4194300kB 524271 pages RAM 296946 pages HighMem 5668 pages reserved 867664 pages shared 82155 pages non-shared Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2011-05-30lguest: remove support for VIRTIO_F_NOTIFY_ON_EMPTY.Rusty Russell1-19/+1
No virtio device does this any more, so no need to clutter lguest with it. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2011-05-30lguest: fix up compilation after moveRusty Russell2-2/+2
ed16648eb5b86917f0b90bdcdbc857202da72f90 "Move kvm, uml, and lguest subdirectories" broke the lguest example launcher. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2011-05-06Correct occurrences ofRob Landley1-1/+2
- Documentation/kvm/ to Documentation/virtual/kvm - Documentation/uml/ to Documentation/virtual/uml - Documentation/lguest/ to Documentation/virtual/lguest throughout the kernel source tree. Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
2011-05-06Move kvm, uml, and lguest subdirectories under a common "virtual" directory, I.E:Rob Landley5-0/+2290
cd Documentation mkdir virtual git mv kvm uml lguest virtual Signed-off-by: Rob Landley <rlandley@parallels.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.