In-kernel ITS emulation on ARM64 will require to supply requester IDs.
These IDs can now be retrieved from the device pointer using new
pci_requester_id() function.

This patch adds pci_dev pointer to KVM GSI routing functions and makes
callers passing it.

x86 architecture does not use requester IDs, but hw/i386/kvm/pci-assign.c
also made passing PCI device pointer instead of NULL for consistency with
the rest of the code.
Signed-off-by: NPavel Fedin <p.fedin@samsung.com>
Message-Id: <ce081423ba2394a4efc30f30708fca07656bc500.1444916432.git.p.fedin@samsung.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

For GICv3 ITS implementation we are going to use requester IDs in KVM IRQ
routing code. This patch introduces reusable convenient way to obtain this
ID from the device pointer. The new function is now used in some places,
where the same calculation was used.

MemTxAttrs.stream_id also renamed to requester_id in order to better
reflect semantics of the field.
Signed-off-by: NPavel Fedin <p.fedin@samsung.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Acked-by: NMichael S. Tsirkin <mst@redhat.com>
Message-Id: <5814bcb03a297f198e796b13ed9c35059c52f89b.1444916432.git.p.fedin@samsung.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

This capability is useful to determine whether we can use KVM ITS
emulation on ARM
Signed-off-by: NPavel Fedin <p.fedin@samsung.com>
Message-Id: <ff4ccb09b837d37defd639b885526949a25276de.1444916432.git.p.fedin@samsung.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

The first argument of g_free_rcu() is a pointer to a structure.  But
foo_reclaim is used as a function name in the previous example along
with &foo as a pointer to the structure being reclaimed.  Make the
example consistent with the previous one.
Signed-off-by: NSergey Fedorov <serge.fdrv@gmail.com>
Message-Id: <1444837604-13712-1-git-send-email-serge.fdrv@gmail.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

All backends now return errors through Error*, so the "Failed to
create chardev" placeholder error can only be reached if the backend
is not available (and only from the chardev-add QMP command; instead,
the -chardev command line option fails earlier).
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

The backend now always returns errors via the Error* argument.
This avoids a double error message.  Before:

    qemu-system-x86_64: -chardev stdio,id=base: cannot use stdio with -daemonize
    qemu-system-x86_64: -chardev stdio,id=base: Failed to create chardev

After:

    qemu-system-x86_64: -chardev stdio,id=base: cannot use stdio with -daemonize
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Conversion to Error * brings better error messages; before:

    qemu-system-x86_64: -chardev id=serial,backend=parallel,path=vl.c: Failed to create chardev

After:

    qemu-system-x86_64: -chardev id=serial,backend=parallel,path=vl.c: not a parallel port: Inappropriate ioctl for device
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Having creation as a member of the CharDriver struct removes the need
to export functions for qemu-char.c's usage.  After the conversion,
chardev backends implemented outside qemu-char.c will not need a stub
creation function anymore.

Ultimately all drivers will be converted.  For now, support the case
where cd->create == NULL.
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Move the #ifdef up into qmp_chardev_add, and avoid duplicating
the code that reports unavailable backends.  Split HAVE_CHARDEV_TTY
into HAVE_CHARDEV_SERIAL and HAVE_CHARDEV_PTY.
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Use the usual idioms for error propagation.
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

The README file is usually the first thing consulted when a user
or developer obtains a copy of the QEMU source. The current QEMU
README is lacking immediately useful information and so not very
friendly for first time encounters. It either redirects users to
qemu-doc.html (which does not exist until they've actually
compiled QEMU), or the website (which assumes the user has
convenient internet access at time of reading).

This fills out the README file as simple quick-start guide on
the topics of building source, submitting patches, licensing
and how to contact the QEMU community. It does not intend to be
comprehensive, instead referring people to an appropriate web
page to obtain more detailed information. The intent is to give
users quick guidance to get them going in the right direction.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>
Message-Id: <1444671679-17674-1-git-send-email-berrange@redhat.com>
Reviewed-by: NJohn Snow <jsnow@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

The QemuOpts-based code treats "option not set" and "option set
to false" the same way for the ipv4 and ipv6 options, because it
is meant to handle only the ",ipv4" and ",ipv6" substrings in
hand-crafted option parsers.

When converting InetSocketAddress to QemuOpts, however, it is
necessary to handle all three cases (not set, set to true, set
to false).  Currently we are not handling all cases correctly.
The rules are:

* if none or both options are absent, leave things as is

* if the single present option is Y, the other should be N.
This can be implemented by leaving things as is, or by setting
the other option to N as done in this patch.

* if the single present option is N, the other should be Y.
This is handled by the "else if" branch of this patch.

This ensures that the ipv4 option has an effect on Windows,
where creating the socket with PF_UNSPEC makes an ipv6
socket.  With this patch, ",ipv4" will result in a PF_INET
socket instead.
Reported-by: NSair, Umair <Umair_Sair@mentor.com>
Tested-by: NSair, Umair <Umair_Sair@mentor.com>
Reviewed-by: NDaniel P. Berrange <berrange@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Andrzej Zaborowski <balrogg@gmail.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com?
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Cc: Alexander Graf <agraf@suse.de>
Cc: Scott Wood <scottwood@freescale.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

checkpatch currently loops on fpu/softfloat.c
Turns out this is fixed in the Linux version of checkpatch.

So this is a port of Andy Whitcrofts fix from Linux,
Original commit was commit 89a883530fe7 ("checkpatch: ## is not a
valid modifier")

As suggested by Peter Maydell for the QEMU version we drop the last "|"
as there seems to be no need for that. (FWIW, the kernel discusion about
that dried out:
http://www.spinics.net/lists/kernel/msg1944421.html
)

Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <1444291524-66569-1-git-send-email-borntraeger@de.ibm.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

As the comment in kvm_set_phys_mem() says, KVM works in page size chunks.
However it uses hardcoded TARGET_PAGE_SIZE which is 4K on most platforms
while actual host may use different page size, for example, PPC64 hosts
use 64K system pages.

This replaces static TARGET_PAGE_SIZE with run-time calculated
qemu_real_host_page_size.
Signed-off-by: NAlexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <1444102257-17405-1-git-send-email-aik@ozlabs.ru>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

The header is included from basically everywhere, thanks to cpu.h.
It should be moved to the (TCG only) files that actually need it.
As a start, remove non-TCG stuff.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

HV_X64_MSR_VP_RUNTIME msr used by guest to get
"the time the virtual processor consumes running guest code,
and the time the associated logical processor spends running
hypervisor code on behalf of that guest."

Calculation of that time is performed by task_cputime_adjusted()
for vcpu task by KVM side.
Signed-off-by: NAndrey Smetanin <asmetanin@virtuozzo.com>
Signed-off-by: NDenis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Eduardo Habkost <ehabkost@redhat.com>
CC: "Andreas Färber" <afaerber@suse.de>
CC: Marcelo Tosatti <mtosatti@redhat.com>
Message-Id: <1442397584-16698-4-git-send-email-den@openvz.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

Hyper-V features bit HV_X64_MSR_VP_INDEX_AVAILABLE value is
based on cpu option "hv-vpindex" and kernel support of
HV_X64_MSR_VP_INDEX.
Signed-off-by: NAndrey Smetanin <asmetanin@virtuozzo.com>
Signed-off-by: NDenis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Eduardo Habkost <ehabkost@redhat.com>
CC: "Andreas Färber" <afaerber@suse.de>
CC: Marcelo Tosatti <mtosatti@redhat.com>
Message-Id: <1442397584-16698-3-git-send-email-den@openvz.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

HV_X64_MSR_RESET msr is used by Hyper-V based Windows guest
to reset guest VM by hypervisor. This msr is stateless so
no migration/fetch/update is required.

This code checks cpu option "hv-reset" and support by
kernel. If both conditions are met appropriate Hyper-V features
cpuid bit is set.
Signed-off-by: NAndrey Smetanin <asmetanin@virtuozzo.com>
Signed-off-by: NDenis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Eduardo Habkost <ehabkost@redhat.com>
CC: "Andreas Färber" <afaerber@suse.de>
CC: Marcelo Tosatti <mtosatti@redhat.com>
Message-Id: <1442397584-16698-2-git-send-email-den@openvz.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

linux-headers/linux/vhost.h is currently out of sync with Linux.  Do
not touch it in this update.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

The style here seems to be split according to the maintainer, but
traditionally open braces were placed on typedef lines.
Suggested-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>