- 24 10月, 2007 3 次提交
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由 Jeff Garzik 提交于
Tackle the relatively sane complaints of checkpatch --file. The vast majority is indentation and whitespace changes, the rest are * #include fixes * printk KERN_xxx prefix addition * BSS/initializer cleanups Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
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由 Ralf Baechle 提交于
Commits 58b053e4 ("Update arch/ to use sg helpers") 45711f1a ("[SG] Update drivers to use sg helpers") fa05f128 ("Update net/ to use sg helpers") converted many files to use the scatter gather helpers without ensuring that the necessary headerfile <linux/scatterlist> is included. This happened to work for ia64, powerpc, sparc64 and x86 because they happened to drag in that file via their <asm/dma-mapping.h>. On most of the others this probably broke. Instead of increasing the header file spider web I choose to include <linux/scatterlist.h> directly into the affectes files. Signed-off-by: NRalf Baechle <ralf@linux-mips.org> Signed-off-by: NJens Axboe <jens.axboe@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Emil Medve 提交于
Signed-off-by: NEmil Medve <Emilian.Medve@Freescale.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 23 10月, 2007 37 次提交
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由 Greg Ungerer 提交于
A new style serial driver for the Freescale ColdFire UART to replace the old style one currently in the tree (drivers/serial/mcfserial.c). Currently this UART is only found in the ColdFire CPU family of parts (thus I prefixed this patch [M68KNOMMU]). This has been around for a long while now, tested on all available platforms. Signed-off-by: NGreg Ungerer <gerg@uclinux.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Philippe De Muyter 提交于
Improve the readability of mii_do_cmd(). Signed-off-by: NPhilippe De Muyter <phdm@macqel.be> Signed-off-by: NGreg Ungerer <gerg@uclinux.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Philippe De Muyter 提交于
Indent all the `else' the same way. Remove some unecesary white space. Signed-off-by: NPhilippe De Muyter <phdm@macqel.be> Signed-off-by: NGreg Ungerer <gerg@uclinux.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jiri Slaby 提交于
ztxdone is jumped to even if tty is NULL and tty_wakeup placed after this label doesn't expect NULLed parameter, so this will cause an oops in some situations (why they scheduled a wakeup there before remove bottom half processing patch?). wakeup only in the case when we have non-null tty struct. Spotted by Adrian Bunk. Signed-off-by: NJiri Slaby <jirislaby@gmail.com> Cc: Adrian Bunk <bunk@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Dan Williams 提交于
ops_complete_biofill() runs outside of spin_lock(&sh->lock) and clears the 'pending' and 'ack' bits. Since the test_and_ack_op() macro only checks against 'complete' it can get an inconsistent snapshot of pending work. Move the clearing of these bits to handle_stripe5(), under the lock. Signed-off-by: NDan Williams <dan.j.williams@intel.com> Tested-by: NJoel Bertrand <joel.bertrand@systella.fr> Signed-off-by: NNeil Brown <neilb@suse.de> Cc: Stable <stable@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 NeilBrown 提交于
As page->index is unsigned, this all becomes an unsigned comparison, which almost always returns an error. Signed-off-by: NNeil Brown <neilb@suse.de> Cc: Stable <stable@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexey Korolev 提交于
This patch solves kernel deadlock issue seen on JFFF2 simultaneous operations. Detailed investigation of the issue showed that the kernel deadlock is caused by tons of recursive get_chip calls. Signed-off-by: NAlexey Korolev <akorolev@infradead.org> Acked-by: NNicolas Pitre <nico@cam.org> Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>
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由 FUJITA Tomonori 提交于
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 FUJITA Tomonori 提交于
arch/parisc/kernel/pci-dma.c: In function 'pa11_dma_map_sg': arch/parisc/kernel/pci-dma.c:487: error: 'struct scatterlist' has no member named 'page' arch/parisc/kernel/pci-dma.c: In function 'pa11_dma_unmap_sg': arch/parisc/kernel/pci-dma.c:508: error: 'struct scatterlist' has no member named 'page' arch/parisc/kernel/pci-dma.c:508: error: 'struct scatterlist' has no member named 'page' arch/parisc/kernel/pci-dma.c: In function 'pa11_dma_sync_sg_for_cpu': arch/parisc/kernel/pci-dma.c:535: error: 'struct scatterlist' has no member named 'page' arch/parisc/kernel/pci-dma.c:535: error: 'struct scatterlist' has no member named 'page' arch/parisc/kernel/pci-dma.c: In function 'pa11_dma_sync_sg_for_device': arch/parisc/kernel/pci-dma.c:545: error: 'struct scatterlist' has no member named 'page' arch/parisc/kernel/pci-dma.c:545: error: 'struct scatterlist' has no member named 'page' Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 FUJITA Tomonori 提交于
git-drivers/ide/ide-probe.c: In function 'hwif_init': drivers/ide/ide-probe.c:1327: error: implicit declaration of function 'sg_init_table' Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
Based on initial patch from Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Olof Johansson 提交于
Fix fallout from 18dabf47: In file included from include/linux/dma-mapping.h:52, from drivers/base/dma-mapping.c:10: include/asm/dma-mapping.h: In function 'dma_map_sg': include/asm/dma-mapping.h:288: error: 'struct scatterlist' has no member named 'page' include/asm/dma-mapping.h:288: error: 'struct scatterlist' has no member named 'page' include/asm/dma-mapping.h:288: error: 'struct scatterlist' has no member named 'page' include/asm/dma-mapping.h:289: error: 'struct scatterlist' has no member named 'page' include/asm/dma-mapping.h:290: error: 'struct scatterlist' has no member named 'page' include/asm/dma-mapping.h: In function 'dma_sync_sg_for_cpu': include/asm/dma-mapping.h:331: error: 'struct scatterlist' has no member named 'page' drivers/scsi/ps3rom.c: In function 'fetch_to_dev_buffer': drivers/scsi/ps3rom.c:150: error: 'struct scatterlist' has no member named 'page' Signed-off-by: NOlof Johansson <olof@lixom.net> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Olof Johansson 提交于
More fallout from sg_page changes: drivers/infiniband/hw/ehca/ehca_mrmw.c: In function 'ehca_set_pagebuf_user1': drivers/infiniband/hw/ehca/ehca_mrmw.c:1779: error: 'struct scatterlist' has no member named 'page' drivers/infiniband/hw/ehca/ehca_mrmw.c: In function 'ehca_check_kpages_per_ate': drivers/infiniband/hw/ehca/ehca_mrmw.c:1835: error: 'struct scatterlist' has no member named 'page' drivers/infiniband/hw/ehca/ehca_mrmw.c: In function 'ehca_set_pagebuf_user2': drivers/infiniband/hw/ehca/ehca_mrmw.c:1870: error: 'struct scatterlist' has no member named 'page' Signed-off-by: NOlof Johansson <olof@lixom.net> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Rusty Russell 提交于
Jes complains that page table code still uses lgread_u32 even though it now uses general kernel pte types. The best thing to do is to generalize lgread_u32 and lgwrite_u32. This means we lose the efficiency of getuser(). We could potentially regain it if we used __copy_from_user instead of copy_from_user, but I'm not certain that our range check is equivalent to access_ok() on all platforms. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Acked-by: NJes Sorensen <jes@sgi.com>
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由 Rusty Russell 提交于
This makes lguest able to use the virtio devices. We change the device descriptor page from a simple array to a variable length "type, config_len, status, config data..." format, and implement virtio_config_ops to read from that config data. We use the virtio ring implementation for an efficient Guest <-> Host virtqueue mechanism, and the new LHCALL_NOTIFY hypercall to kick the host when it changes. We also use LHCALL_NOTIFY on kernel addresses for very very early console output. We could have another hypercall, but this hack works quite well. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
This patch gets rid of the old lguest host I/O infrastructure and replaces it with a single hypercall "LHCALL_NOTIFY" which takes an address. The main change is the removal of io.c: that mainly did inter-guest I/O, which virtio doesn't yet support. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
This gets rid of the lguest bus, drivers and DMA mechanism, to make way for a generic virtio mechanism. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
These helper routines supply most of the virtqueue_ops for hypervisors which want to use a ring for virtio. Unlike the previous lguest implementation: 1) The rings are variable sized (2^n-1 elements). 2) They have an unfortunate limit of 65535 bytes per sg element. 3) The page numbers are always 64 bit (PAE anyone?) 4) They no longer place used[] on a separate page, just a separate cacheline. 5) We do a modulo on a variable. We could be tricky if we cared. 6) Interrupts and notifies are suppressed using flags within the rings. Users need only get the ring pages and provide a notify hook (KVM wants the guest to allocate the rings, lguest does it sanely). Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Cc: Dor Laor <dor.laor@qumranet.com>
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由 Rusty Russell 提交于
This adds the logic to convert the virtio ids into module aliases, and includes a modalias entry in sysfs and the env var to make probing work. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
This is an hvc-based virtio console driver. It's suboptimal becuase hvc expects to have raw access to interrupts and virtio doesn't assume that, so it currently polls. There are two solutions: expose hvc's "kick" interface, or wean off hvc. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
The block driver uses scatter-gather lists with sg[0] being the request information (struct virtio_blk_outhdr) with the type, sector and inbuf id. The next N sg entries are the bio itself, then the last sg is the status byte. Whether the N entries are in or out depends on whether it's a read or a write. We accept the normal (SCSI) ioctls: they get handed through to the other side which can then handle it or reply that it's unsupported. It's not clear that this actually works in general, since I don't know if blk_pc_request() requests have an accurate rq_data_dir(). Although we try to reply -ENOTTY on unsupported commands, ioctl(fd, CDROMEJECT) returns success to userspace. This needs a separate patch. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Cc: Jens Axboe <jens.axboe@oracle.com>
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由 Rusty Russell 提交于
The network driver uses two virtqueues: one for input packets and one for output packets. This has nice locking properties (ie. we don't do any for recv vs send). TODO: 1) Big packets. 2) Multi-client devices (maybe separate driver?). 3) Resolve freeing of old xmit skbs (Christian Borntraeger) Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: netdev@vger.kernel.org
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由 Rusty Russell 提交于
This attempts to implement a "virtual I/O" layer which should allow common drivers to be efficiently used across most virtual I/O mechanisms. It will no-doubt need further enhancement. The virtio drivers add buffers to virtio queues; as the buffers are consumed the driver "interrupt" callbacks are invoked. There is also a generic implementation of config space which drivers can query to get setup information from the host. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Cc: Dor Laor <dor.laor@qumranet.com> Cc: Arnd Bergmann <arnd@arndb.de>
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由 Rusty Russell 提交于
1) This allows us to get alot closer to booting bzImages. 2) It means we don't have to know page_offset. 3) The Guest needs to modify the boot pagetables to create the PAGE_OFFSET mapping before jumping to C code. 4) guest_pa() walks the page tables rather than using page_offset. 5) We don't use page_offset to figure out whether to emulate: it was always kinda quesationable, and won't work for instructions done before remapping (bzImage unpacking in particular). 6) We still want the kernel address for tlb flushing: have the initial hypercall give us that, too. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
(Based on Ron Minnich's LGUEST_PLAN9_SYSCALL patch). This patch allows Guests to specify what system call vector they want, and we try to reserve it. We only allow one non-Linux system call vector, to try to avoid DoS on the Host. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Matias Zabaljauregui 提交于
This is my first step in the migration of page_tables.c to the kernel types and functions/macros (2.6.23-rc3). Seems to be working OK. Signed-off-by: NMatias Zabaljauregui <matias.zabaljauregui@cern.ch> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Jes Sorensen 提交于
Move setup_regs() to lguest_arch_setup_regs() in i386_core.c given that this is very architecture specific. Signed-off-by: NJes Sorensen <jes@sgi.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Jes Sorensen 提交于
Apply Clue 2x4 to lguest userland<->kernel handling code and the lguest launcher. Pointers are not to be passed in u32's! Basic rule of thumb: Anything passing u32's back and forth should be passing unsigned longs to be portable to 64 bit archs. For those who forgotten already, I repeat: NO POINTERS IN u32! Signed-off-by: NJes Sorensen <jes@sgi.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Jes Sorensen 提交于
Clean up the hypercall code to make the code in hypercalls.c architecture independent. First process the common hypercalls and then call lguest_arch_do_hcall() if the call hasn't been handled. Rename struct hcall_ring to hcall_args. This patch requires the previous patch which reorganize the layout of struct lguest_regs on i386 so they match the layout of struct hcall_args. Signed-off-by: NJes Sorensen <jes@sgi.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
Currently we look at the "trapnum" to see if the Guest wants a hypercall. But once the hypercall is done we have to reset trapnum to a bogus value, otherwise if we exit to userspace and return, we'd run the same hypercall twice (that was a nasty bug to find!). This has two main effects: 1) When Jes's patch changes the hypercall args to be a generic "struct hcall_args" we simply change the type of "lg->hcall". It's set by arch code, so if it has to copy args or something it can do so, and point "hcall" into lg->arch somewhere. 2) Async hypercalls only get run when an actual hypercall is pending. This simplfies the code a little and is a more logical semantic. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Jes Sorensen 提交于
Move eax next to ebx/ecx/edx in struct lguest_regs on i386, so they will be located together and allow it to map directly to a struct hcall_ring entry (which will be renamed struct hcall_args as in a subsequent patch). This is in preparation for making the code hcall code architecture independent. Signed-off-by: NJes Sorensen <jes@sgi.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Jes Sorensen 提交于
Separate i386 architecture specific from core.c and move it to x86/core.c and add x86/lguest.h header file to match. Signed-off-by: NJes Sorensen <jes@sgi.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
This simplifies the code a little, in preparation for allowing alternate system call vectors in guests (Plan 9 uses 0x40). Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
Back when we had all the Guest state in the switcher, we had a fixed array of them. This is no longer necessary. If we switch the network code to using random_ether_addr (46 bits is enough to avoid clashes), we can get rid of the concept of "guest id" altogether. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
In order to avoid problematic special linking of the Launcher, we give the Host an offset: this means we can use any memory region in the Launcher as Guest memory rather than insisting on mmap() at 0. The result is quite pleasing: a number of casts are replaced with simple additions. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
lguest uses a "switcher" shim mapped high to bounce between host and guest. As lguest becomes less i386-centric, we separate this code into a subdir. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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