Keep track of whether we sent a reply to a request; this is a bit
paranoid but it means:
a) We should always recycle an element even if there was an error
in the request
b) Never try and send two replies on one queue element
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Route fuse out messages back through the same queue elements
that had the command that triggered the request.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Pop queue elements off queues, copy the data from them and
pass that to fuse.
Note: 'out' in a VuVirtqElement is from QEMU
'in' in libfuse is into the daemon
So we read from the out iov's to get a fuse_in_header
When we get a kick we've got to read all the elements until the queue
is empty.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Listen on our unix socket for the connection from QEMU, when we get it
initialise vhost-user and dive into our own loop variant (currently
dummy).
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
When run with vhost-user options we conect to the QEMU instead
via a socket. Start this off by creating the socket.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
The -o source=PATH option will be used by most command-line invocations.
Let's document it!
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Add options to specify parameters for virtio-fs paths, i.e.
./virtiofsd -o vhost_user_socket=/tmp/vhostqemu
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
If caller has not sent file handle in request, then using inode, retrieve
the fd opened using O_PATH and use that to open file again and issue
fsync. This will be needed when dax_flush() calls fsync. At that time
we only have inode information (and not file).
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
1) Use correct CONFIG_FALLOCATE macro to check if fallocate() is supported.(i.e configure
script sets CONFIG_FALLOCATE intead of HAVE_FALLOCATE if fallocate() is supported)
2) Replace HAVE_POSIX_FALLOCATE with CONFIG_POSIX_FALLOCATE.
Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Merged from two of Xiao Yang's patches
virtiofsd only supports major=7, minor>=31; trim out a lot of
old compatibility code.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
All of the fuse files include config.h and define GNU_SOURCE
where we don't have either under our build - remove them.
Fixup path to the kernel's fuse.h in the QEMUs world.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
QEMU's compiler enables warnings/errors for ignored values
and the (void) trick used in the fuse code isn't enough.
Turn all the return values into a return value on the function.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Notify reply support is unused by virtiofsd. The code would need to be
updated to validate input buffer sizes. Remove this unused code since
changes to it are untestable.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Classic FUSE file system daemons take a mountpoint argument but
virtiofsd exposes a vhost-user UNIX domain socket instead. The
mountpoint argument is not used by virtiofsd but the user is still
required to pass a dummy argument on the command-line.
Remove the mountpoint argument to clean up the command-line.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
passthrough_ll is one of the examples in the upstream fuse project
and is the main part of our daemon here. It passes through requests
from fuse to the underlying filesystem, using syscalls as directly
as possible.
From libfuse fuse-3.8.0
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Fixed up 'GPL' to 'GPLv2' as per Dan's comments and consistent
with the 'LICENSE' file in libfuse; patch sent to libfuse to fix
it upstream.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
fuse_lowlevel is one of the largest files from the library
and does most of the work. Add it separately to keep the diff
sizes small.
Again this is from upstream fuse-3.8.0
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Add most of the non-main .c files we need from upstream fuse-3.8.0
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Update scripts/update-linux-headers.sh to add fuse.h and
use it to pull in fuse.h from the kernel; from v5.5-rc1
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
The Exynos4210 serial driver uses an interrupt line to signal if receive
data is available. Connect that interrupt with the DMA controller's
'peripheral busy' gpio pin to stop the DMA if there is no more receive
data available. Without this patch, receive DMA runs wild and fills the
entire receive DMA buffer with invalid data.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-id: 20200123052540.6132-9-linux@roeck-us.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
To support receive DMA, we need to inform the DMA controller if receive data
is available. Otherwise the DMA controller keeps requesting data, causing
receive errors.
Implement this using an interrupt line. The instantiating code then needs
to connect the interrupt with the matching DMA controller GPIO pin.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-id: 20200123052540.6132-8-linux@roeck-us.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
First parameter to exynos4210_get_irq() is not the SPI port number,
but the interrupt group number. Interrupt groups are 20 for mdma
and 21 for pdma. Interrupts are not inverted. Controllers support 32
events (pdma) or 31 events (mdma). Events must all be routed to a single
interrupt line. Set other parameters as documented in Exynos4210 datasheet,
section 8 (DMA controller).
Fixes: 59520dc65e ("hw/arm/exynos4210: Add DMA support for the Exynos4210")
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-id: 20200123052540.6132-4-linux@roeck-us.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The qemu-block-drivers documentation is currently in
docs/qemu-block-drivers.texi in Texinfo format, which we present
to the user as:
* a qemu-block-drivers manpage
* a section of the main qemu-doc HTML documentation
Convert the documentation to rST format, and present it to
the user as:
* a qemu-block-drivers manpage
* part of the system/ Sphinx manual
This follows the same pattern we've done for qemu-ga and qemu-nbd.
We have to drop a cross-reference from the documentation of the
-cdrom option back to the qemu-block-drivers documentation, since
they're no longer within the same texinfo document.
As noted in a comment, the manpage output is slightly compromised
due to limitations in Sphinx. In an ideal world, the HTML output
would have the various headings like 'Disk image file formats'
as top-level section headings (which then appear in the overall
system manual's table-of-contents), and it would not have the
section headings which make sense only for the manpage like
'synopsis', 'description', and 'see also'. Unfortunately, the
mechanism Sphinx provides for restricting pieces of documentation
is limited to the point of being flawed: the 'only::' directive
is implemented as a filter that is applied at a very late stage
in the document processing pipeline, rather than as an early
equivalent of an #ifdef. This means that Sphinx's process of
identifying which section heading markup styles are which levels
of heading gets confused if the 'only::' directive contains
section headings which would affect the heading-level of a
later heading. I have opted to prioritise making the HTML format
look better, with the compromise being that in the manpage
the 'Disk image file formats' &c headings are top-level headings
rather than being sub-headings under the traditional 'Description'
top-level section title.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20200116141511.16849-4-peter.maydell@linaro.org
The qemu-nbd documentation is currently in qemu-nbd.texi in Texinfo
format, which we present to the user as:
* a qemu-nbd manpage
* a section of the main qemu-doc HTML documentation
Convert the documentation to rST format, and present it to the user as:
* a qemu-nbd manpage
* part of the interop/ Sphinx manual
This follows the same pattern as commit 27a296fce9 did for the
qemu-ga manpage.
All the content of the old manpage is retained, except that I have
dropped the "This is free software; see the source for copying
conditions. There is NO warranty..." text that was in the old AUTHOR
section; Sphinx's manpage builder doesn't expect that much text in
the AUTHOR section, and since none of our other manpages have it it
seems easiest to delete it rather than try to figure out where else
in the manpage to put it.
The only other textual change is that I have had to give the
--nocache option its own description ("Equivalent to --cache=none")
because Sphinx doesn't have an equivalent of using item/itemx
to share a description between two options.
Some minor aspects of the formatting have changed, to suit what is
easiest for Sphinx to output. (The most notable is that Sphinx
option section option syntax doesn't support '--option foo=bar'
with bar underlined rather than bold, so we have to switch to
'--option foo=BAR' instead.)
The contents of qemu-option-trace.texi are now duplicated in
docs/interop/qemu-option-trace.rst.inc, until such time as we complete
the conversion of the other files which use it; since it has had only
3 changes in 3 years, this shouldn't be too awkward a burden.
(We use .rst.inc because if this file fragment has a .rst extension
then Sphinx complains about not seeing it in a toctree.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20200116141511.16849-2-peter.maydell@linaro.org
We were incorrectly requiring ARMv8.4 support for the pauth
tests, but Pointer Authentication is an ARMv8.3 extension.
Further, hiding the required architecture within asm() is
not correct.
Correct the architecture version requested, and specify it
in the cflags of the (cross-) compiler rather than in the asm.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200116230809.19078-3-richard.henderson@linaro.org
[PMM: tweaked commit message]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Fix mmap guest space and brk
Add FS/FD/RTC/KCOV ioctls
# gpg: Signature made Thu 23 Jan 2020 08:21:41 GMT
# gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg: issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg: aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C
* remotes/vivier2/tags/linux-user-for-5.0-pull-request:
linux-user: Add support for read/clear RTC voltage low detector using ioctls
linux-user: Add support for getting/setting RTC PLL correction using ioctls
linux-user: Add support for getting/setting RTC wakeup alarm using ioctls
linux-user: Add support for getting/setting RTC periodic interrupt and epoch using ioctls
linux-user: Add support for getting/setting RTC time and alarm using ioctls
linux-user: Add support for enabling/disabling RTC features using ioctls
linux-user: Add support for TYPE_LONG and TYPE_ULONG in do_ioctl()
linux-user: Add support for KCOV_INIT_TRACE ioctl
linux-user: Add support for KCOV_<ENABLE|DISABLE> ioctls
configure: Detect kcov support and introduce CONFIG_KCOV
linux-user: Add support for FDFMT<BEG|TRK|END> ioctls
linux-user: Add support for FD<SETEMSGTRESH|SETMAXERRS|GETMAXERRS> ioctls
linux-user: Add support for FS_IOC32_<GET|SET>VERSION ioctls
linux-user: Add support for FS_IOC32_<GET|SET>FLAGS ioctls
linux-user: Add support for FS_IOC_<GET|SET>VERSION ioctls
linux-user: Reserve space for brk
linux-user:Fix align mistake when mmap guest space
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Remove another limit to NB_MMU_MODES.
Fix compilation using uclibc.
Fix defaulting of -accel parameters.
Tidy cputlb basic routines.
Adjust git.orderfile for decodetree.
# gpg: Signature made Wed 22 Jan 2020 02:44:18 GMT
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F
* remotes/rth/tags/pull-tcg-20200121:
scripts/git.orderfile: Display decodetree before C source
cputlb: Hoist timestamp outside of loops over tlbs
cputlb: Initialize tlbs as flushed
cputlb: Partially merge tlb_dyn_init into tlb_init
cputlb: Split out tlb_mmu_flush_locked
cputlb: Hoist tlb portions in tlb_flush_one_mmuidx_locked
cputlb: Hoist tlb portions in tlb_mmu_resize_locked
cputlb: Pass CPUTLBDescFast to tlb_n_entries and sizeof_tlb
cputlb: Make tlb_n_entries private to cputlb.c
cputlb: Merge tlb_table_flush_by_mmuidx into tlb_flush_one_mmuidx_locked
vl: Only choose enabled accelerators in configure_accelerators
vl: Remove useless test in configure_accelerators
vl: Reduce scope of variables in configure_accelerators
vl: Remove unused variable in configure_accelerators
util/cacheinfo: fix crash when compiling with uClibc
cputlb: Handle NB_MMU_MODES > TARGET_PAGE_BITS_MIN
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Dr. David Alan Gilbert
Stefan Hajnoczi
Vivek Goyal
Xiao Yang
Peter Maydell
Guenter Roeck
Philippe Mathieu-Daudé
Andrew Jones
Keqian Zhu
Richard Henderson
Vincent Dehors
Clement Deschamps