Instead of having (current)three command line switches -std-vga,
-cirrusvga and -vmwarevga, provide one -vga switch which takes
an argument, so that:
qemu -std-vga becomes qemu -vga std
qemu -cirrusvga becomes qemu -vga cirrus
qemu -vmwarevga becomes qemu -vga vmware
Be more friendly when signalfd() fails, and also add configure checks to detect
that syscall(SYS_signalfd) actually works. malc pointed out that some installs
do not have /usr/include/linux headers that are in sync with the glibc headers
so why SYS_signalfd is defined, it's #defined to _NR_signalfd which is not
defined in the /usr/include/linux header.
While this is a distro bug, it doesn't hurt to do a more thorough job in
detection.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5334 c046a42c-6fe2-441c-8c8c-71466251a162
Implement an fd pool to get real AIO with posix-aio
This patch implements a simple fd pool to allow many AIO requests with
posix-aio. The result is significantly improved performance (identical to that
reported for linux-aio) for both cache=on and cache=off.
The fundamental problem with posix-aio is that it limits itself to one thread
per-file descriptor. I don't know why this is, but this patch provides a simple
mechanism to work around this (duplicating the file descriptor).
This isn't a great solution, but it seems like a reasonable intermediate step
between posix-aio and a custom thread-pool to replace it.
Ryan Harper will be posting some performance analysis he did comparing posix-aio
with fd pooling against linux-aio. The size of the posix-aio thread pool and
the fd pool were largely determined by him based on this analysis.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5323 c046a42c-6fe2-441c-8c8c-71466251a162
__GLIBC_PREREQ is defined in such a way that the ! cannot be used in front of
it on FreeBSD. Also, -lpthread is not implied by the build and we definitely
use it for compatfd support.
While at it, I added a default initialization for posix-aio that seems to
perform well in our testing.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5322 c046a42c-6fe2-441c-8c8c-71466251a162
On Intel CPUs, sysenter and sysexit are valid in 64-bit mode. This patch
makes both 64-bit aware and enables them for Intel CPUs.
Add cpu save/load for 64-bit wide sysenter variables.
Signed-off-by: Alexander Graf <agraf@suse.de>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5318 c046a42c-6fe2-441c-8c8c-71466251a162
This patch adds a Core 2 Duo CPU to the available CPU types. The CPU
definition tries to resemble a real CPU as good as possible, whilst not
exposing features qemu does not implement.
The patch also includes some minor additions that Core 2 Duo CPUs have:
- New MSR: MSR_IA32_PERF_STATUS
- CPUID up to level 5 (cache info and mwait)
Signed-off-by: Alexander Graf <agraf@suse.de>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5317 c046a42c-6fe2-441c-8c8c-71466251a162
Right now CPU vendor identification contains a lot of magic numbers. The
patch cleans them up to defines, so we can identify the CPU later on
without copying magic numbers.
Signed-off-by: Alexander Graf <agraf@suse.de>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5316 c046a42c-6fe2-441c-8c8c-71466251a162
fix bug in block-qcow2.c:alloc_cluster_offset() (Shahar Frank)
During the debugging of the new revision of the zero dedup patch I
stepped on the following bug in block-qcow2.c:alloc_cluster_offset(). I
am not sure what the exact damage this bug can do, but it may be very
nasty because you way not notice it effects until you will do some
snapshot operations or similar actions that rely on the reference
counting.
The bug is easy to spot using the new "check" verb I added to the
qemu-img in one of the previous patches. I will resend the qemu-img
patch again with the new version of the zero dedup.
Signed-off-by: Shahar Frank <shaharf@qumranet.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5313 c046a42c-6fe2-441c-8c8c-71466251a162
Reintroduce TEXT_CONSOLE_FIXED_SIZE and TEXT_CONSOLE for resizable vc's.
This partially reverts r4812 to fix an issue highlighted by Ryan Harper
with all vc's being fixed size which prevented backends with resizable
window (curses) from displaying okay.
Add missing dependencies for qemu-doc.* (Stefan Weil)
This patch fixes some items in Makefile:
* remove duplicate entries from .PHONY
* add missing entries to .PHONY
* sort entries in .PHONY alphabetically
* add missing dependencies for qemu-doc.* targets
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5307 c046a42c-6fe2-441c-8c8c-71466251a162
This patch allows to use a "real" SCSI tape with qemu using
"-drive /dev/sgX,if=scsi".
It allows to decode correctly transfer length when the type of the
device is a tape.
Some issues remain when the application reading the tape tries to go
beyond the end of the stream (but they must be corrected at the SCSI
controller level).
RedHat 9 shipped glibc 2.3. Modern versions of glibc do not have the aio thread
exit issue that the comment references. This patch adjusts the check to only
limit aio_init on glibc versions < 2.4.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5304 c046a42c-6fe2-441c-8c8c-71466251a162
Fix formatting for documentation of nbd command line options.
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5301 c046a42c-6fe2-441c-8c8c-71466251a162
Refactor AIO to allow multiple AIO implementations
This patch refactors the AIO layer to allow multiple AIO implementations. It's
only possible because of the recent signalfd() patch.
Right now, the AIO infrastructure is pretty specific to the block raw backend.
For other block devices to implement AIO, the qemu_aio_wait function must
support registration. This patch introduces a new function,
qemu_aio_set_fd_handler, which can be used to register a file descriptor to be
called back. qemu_aio_wait() now polls a set of file descriptors registered
with this function until one becomes readable or writable.
This patch should allow the implementation of alternative AIO backends (via a
thread pool or linux-aio) and AIO backends in non-traditional block devices
(like NBD).
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5297 c046a42c-6fe2-441c-8c8c-71466251a162
LSI SCSI: raise UDC on infinite loop (Marcelo Tosatti)
Raise UDC (Unexpected Disconnect) when a large enough number of
instructions has been executed by the SCRIPTS processor. This "solution"
is much simpler than temporarily interrupting execution.
This remedies the situation with Windows which downloads SCRIPTS code
that busy loops on guest main memory. Their drivers _do_ handle UDC
appropriately (at least XP and 2003).
It would be nicer to actually detect infinite loops, but until then,
this bandaid seems acceptable.
Since the situation seems to be rare enough, raise the number
of instructions to 10000 (previously 1000).
Three people other than myself had success with this patch.
Swap only altered elements of the grouplist in getgroups() (Kirill Shutemov).
getgroups() returns the number of supplementary group IDs, so it's
unnessary to swap the entire array. It can dramatically speed up
the syscall: on recent Linux kernels NGROUPS_MAX=65536.
Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5267 c046a42c-6fe2-441c-8c8c-71466251a162
Changes:
r219: Fix #size-cells for HelenOS, add /openprom/version node
r220: Fix typo
r221: More realistic mmu_translate
r222: Fix device names to allow Net/OpenBSD to boot
r223: add set-callback for Aurora 2.0
r224: Switch keyboard controller to translated mode so it works as expected
r225: Add mmu release (claim added in r219)
r226: Set variable defaults before nvram_init also for Sparc64 (cf. r136)
r227: Use nvram boot-args and boot-device variables also for Sparc64 (cf. r137)
r228: Fix compilation on OpenBSD: avoid accidental system include file use
r229: Rename /packages/client-iface to /openprom/client-services
r230
From Igor V. Kovalenko:
This openbios-grubfs-ext2fs-block.patch fixes a problem where inode
pointer is truncated to 32bit integer and then sign-extended to 64bit
integer while passing second pointer argument to ext2_rdfsb.
r231: Fix pad alignment
r232: Remove package finding code that finds unrelated packages
r233: Fix virtual to physical address translation (Igor Kovalenko)
r234: Implement itlb/dtlb directed writes (Igor Kovalenko)
r235: Fix warnings that would be caused by ld flag --warn-common
r236: Enable ld flag --warn-common
r237: Use the firmware device introduced in Qemu SVN r5256
misc tiny patches:
* add a 'check' target to the Makefile
* split code in crt.s to create the _exit syscall; also use the value of
main() as exit status
According to linux kernel sources, register a3 is set in case of failure
(and cleared in case of success) while register v0 contains the result
(or -errno in case of error).
The convention was not followed which results in weird behaviour.
projects / qemu-xen-4.2-testing.git / log