Commit Graph

98587 Commits

Author SHA1 Message Date
Alistair Francis
d057aaece7 hw/riscv: opentitan: Fixup resetvec
The resetvec for the OpenTitan machine ended up being set to an out of
date value, so let's fix that and bump it to the correct start address
(after the boot ROM)

Fixes: bf8803c64d "hw/riscv: opentitan: bump opentitan version"
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220914101108.82571-3-alistair.francis@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-09-27 07:04:38 +10:00
Alistair Francis
277b210dd8 target/riscv: Set the CPU resetvec directly
Instead of using our properties to set a config value which then might
be used to set the resetvec (depending on your timing), let's instead
just set the resetvec directly in the env struct.

This allows us to set the reset vec from the command line with:
    -global driver=riscv.hart_array,property=resetvec,value=0x20000400

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220914101108.82571-2-alistair.francis@wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-09-27 07:04:38 +10:00
Andrew Burgess
4c0f0b6619 target/riscv: remove fixed numbering from GDB xml feature files
The fixed register numbering in the various GDB feature files for
RISC-V only exists because these files were originally copied from the
GDB source tree.

However, the fixed numbering only exists in the GDB source tree so
that GDB, when it connects to a target that doesn't provide a target
description, will use a specific numbering scheme.

That numbering scheme is designed to be compatible with the first
versions of QEMU (for RISC-V), that didn't send a target description,
and relied on a fixed numbering scheme.

Because of the way that QEMU manages its target descriptions,
recording the number of registers in each feature, and just relying on
GDB's numbering starting from 0, then I propose that we remove all the
fixed numbering from the RISC-V feature xml files, and just rely on
the standard numbering scheme.  Plenty of other targets manage their
xml files this way, e.g. ARM, AArch64, Loongarch, m68k, rx, and s390.

Signed-off-by: Andrew Burgess <aburgess@redhat.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com>
Message-Id: <6069395f90e6fc24dac92197be815fedf42f5974.1661934573.git.aburgess@redhat.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-09-27 07:04:38 +10:00
Andrew Burgess
94452ac4cf target/riscv: remove fflags, frm, and fcsr from riscv-*-fpu.xml
While testing some changes to GDB's handling for the RISC-V registers
fcsr, fflags, and frm, I spotted that QEMU includes these registers
twice in the target description it sends to GDB, once in the fpu
feature, and once in the csr feature.

Right now things basically work OK, QEMU maps these registers onto two
different register numbers, e.g. fcsr maps to both 68 and 73, and GDB
can use either of these to access the register.

However, GDB's target descriptions don't really work this way, each
register should appear just once in a target description, mapping the
register name onto the number GDB should use when accessing the
register on the target.  Duplicate register names actually result in
duplicate registers on the GDB side, however, as the registers have
the same name, the user can only access one of these registers.

Currently GDB has a hack in place, specifically for RISC-V, to spot
the duplicate copies of these three registers, and hide them from the
user, ensuring the user only ever sees a single copy of each.

In this commit I propose fixing this issue on the QEMU side, and in
the process, simplify the fpu register handling a little.

I think we should, remove fflags, frm, and fcsr from the two (32-bit
and 64-bit) fpu feature xml files.  These files will only contain the
32 core floating point register f0 to f31.  The fflags, frm, and fcsr
registers will continue to be advertised in the csr feature as they
currently are.

With that change made, I will simplify riscv_gdb_get_fpu and
riscv_gdb_set_fpu, removing the extra handling for the 3 status
registers.

Signed-off-by: Andrew Burgess <aburgess@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <0fbf2a5b12e3210ff3867d5cf7022b3f3462c9c8.1661934573.git.aburgess@redhat.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-09-27 07:04:38 +10:00
Weiwei Li
a412829406 target/riscv: fix csr check for cycle{h}, instret{h}, time{h}, hpmcounter3-31{h}
- modify check for mcounteren to work in all less-privilege mode
- modify check for scounteren to work only when S mode is enabled
- distinguish the exception type raised by check for scounteren between U
and VU mode

Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220817083756.12471-1-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-09-27 07:04:38 +10:00
Rahul Pathak
513eb437ae target/riscv: Remove sideleg and sedeleg
sideleg and sedeleg csrs are not part of riscv isa spec
anymore, these csrs were part of N extension which
is removed from the riscv isa specification.

These commits removed all traces of these csrs from
riscv spec (https://github.com/riscv/riscv-isa-manual) -

commit f8d27f805b65 ("Remove or downgrade more references to N extension (#674)")
commit b6cade07034d ("Remove N extension chapter for now")

Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220824145255.400040-1-rpathak@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-09-27 07:04:38 +10:00
Alex Bennée
0c2d467191 docs/system: clean up code escape for riscv virt platform
The example code is rendered slightly mangled due to missing code
block. Properly escape the code block and add shell prompt and qemu to
fit in with the other examples on the page.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220905163939.1599368-1-alex.bennee@linaro.org>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-09-27 07:04:38 +10:00
Wilfred Mallawa
7a426f83c3 hw/ssi: ibex_spi: update reg addr
Updates the `EVENT_ENABLE` register to offset `0x34` as per
OpenTitan spec [1].

[1] https://docs.opentitan.org/hw/ip/spi_host/doc/#Reg_event_enable

Signed-off-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220823061201.132342-5-wilfred.mallawa@opensource.wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-09-27 07:04:38 +10:00
Wilfred Mallawa
a44558636a hw/ssi: ibex_spi: fixup typos in ibex_spi_host
This patch fixes up minor typos in ibex_spi_host

Signed-off-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Message-Id: <20220823061201.132342-2-wilfred.mallawa@opensource.wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-09-27 07:04:38 +10:00
Stefan Hajnoczi
15aa08a405 Pull request
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Merge tag 'block-pull-request' of https://gitlab.com/stefanha/qemu into staging

Pull request

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* tag 'block-pull-request' of https://gitlab.com/stefanha/qemu:
  virtiofsd: use g_date_time_get_microsecond to get subsecond

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-09-26 15:23:58 -04:00
Stefan Hajnoczi
99d6b11b5b target-arm queue:
* hw/net/can: fix Xilinx ZynqMP CAN RX FIFO logic
  * Fix alignment for Neon VLD4.32
  * Refactoring of page-table-walk code
  * hw/acpi: Add ospm_status hook implementation for acpi-ged
  * hw/net/lan9118: Signal TSFL_INT flag when TX FIFO reaches specified level
  * chardev/baum: avoid variable-length arrays
  * io/channel-websock: avoid variable-length arrays
  * hw/net/e1000e_core: Use definition to avoid dynamic stack allocation
  * hw/ppc/pnv: Avoid dynamic stack allocation
  * hw/intc/xics: Avoid dynamic stack allocation
  * hw/i386/multiboot: Avoid dynamic stack allocation
  * hw/usb/hcd-ohci: Use definition to avoid dynamic stack allocation
  * ui/curses: Avoid dynamic stack allocation
  * tests/unit/test-vmstate: Avoid dynamic stack allocation
  * configure: fix various shellcheck-spotted issues and nits
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Merge tag 'pull-target-arm-20220922' of https://git.linaro.org/people/pmaydell/qemu-arm into staging

target-arm queue:
 * hw/net/can: fix Xilinx ZynqMP CAN RX FIFO logic
 * Fix alignment for Neon VLD4.32
 * Refactoring of page-table-walk code
 * hw/acpi: Add ospm_status hook implementation for acpi-ged
 * hw/net/lan9118: Signal TSFL_INT flag when TX FIFO reaches specified level
 * chardev/baum: avoid variable-length arrays
 * io/channel-websock: avoid variable-length arrays
 * hw/net/e1000e_core: Use definition to avoid dynamic stack allocation
 * hw/ppc/pnv: Avoid dynamic stack allocation
 * hw/intc/xics: Avoid dynamic stack allocation
 * hw/i386/multiboot: Avoid dynamic stack allocation
 * hw/usb/hcd-ohci: Use definition to avoid dynamic stack allocation
 * ui/curses: Avoid dynamic stack allocation
 * tests/unit/test-vmstate: Avoid dynamic stack allocation
 * configure: fix various shellcheck-spotted issues and nits

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# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [full]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [full]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [full]
# gpg:                 aka "Peter Maydell <peter@archaic.org.uk>" [unknown]
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* tag 'pull-target-arm-20220922' of https://git.linaro.org/people/pmaydell/qemu-arm: (39 commits)
  configure: Avoid use of 'local' as it is non-POSIX
  configure: Check mkdir result directly, not via $?
  configure: Remove use of backtick `...` syntax
  configure: Add './' on front of glob of */config-devices.mak.d
  configure: Add missing quoting for some easy cases
  configure: Remove unused meson_args variable
  configure: Remove unused python_version variable
  tests/unit/test-vmstate: Avoid dynamic stack allocation
  ui/curses: Avoid dynamic stack allocation
  hw/usb/hcd-ohci: Use definition to avoid dynamic stack allocation
  hw/i386/multiboot: Avoid dynamic stack allocation
  hw/intc/xics: Avoid dynamic stack allocation
  hw/ppc/pnv: Avoid dynamic stack allocation
  hw/net/e1000e_core: Use definition to avoid dynamic stack allocation
  io/channel-websock: Replace strlen(const_str) by sizeof(const_str) - 1
  chardev/baum: Avoid dynamic stack allocation
  chardev/baum: Use definitions to avoid dynamic stack allocation
  chardev/baum: Replace magic values by X_MAX / Y_MAX definitions
  hw/net/lan9118: Signal TSFL_INT flag when TX FIFO reaches specified level
  hw/acpi: Add ospm_status hook implementation for acpi-ged
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-09-26 13:38:26 -04:00
Thomas Huth
5890258aee Remove the slirp submodule (i.e. compile only with an external libslirp)
Since QEMU 7.1 we don't support Ubuntu 18.04 anymore, so the last big
important Linux distro that did not have a pre-packaged libslirp has
been dismissed. All other major distros seem to have a libslirp package
in their distribution already - according to repology.org:

          Fedora 35: 4.6.1
  CentOS 8 (RHEL-8): 4.4.0
          Debian 11: 4.4.0
 OpenSUSE Leap 15.3: 4.3.1
   Ubuntu LTS 20.04: 4.1.0
      FreeBSD Ports: 4.7.0
      NetBSD pkgsrc: 4.7.0
           Homebrew: 4.7.0
        MSYS2 mingw: 4.7.0

The only one that was still missing a libslirp package is OpenBSD - but
the next version (OpenBSD 7.2 which will be shipped in October) is going
to include a libslirp package. Since QEMU 7.2 will be published after
OpenBSD 7.2, we should be fine there, too.

So there is no real urgent need for keeping the slirp submodule in
the QEMU tree anymore. Thus let's drop the slirp submodule now and
rely on the libslirp packages from the distributions instead.

Message-Id: <20220824151122.704946-7-thuth@redhat.com>
Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-26 17:23:47 +02:00
Matthew Rosato
59d1ce4439 s390x/s390-virtio-ccw: add zpcii-disable machine property
The zpcii-disable machine property can be used to force-disable the use
of zPCI interpretation facilities for a VM.  By default, this setting
will be off for machine 7.2 and newer.

Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Message-Id: <20220902172737.170349-9-mjrosato@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
[thuth: Fix contextual conflict in ccw_machine_7_1_instance_options()]
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-26 17:23:47 +02:00
Matthew Rosato
9ee8f7e46a s390x/pci: reflect proper maxstbl for groups of interpreted devices
The maximum supported store block length might be different depending
on whether the instruction is interpretively executed (firmware-reported
maximum) or handled via userspace intercept (host kernel API maximum).
Choose the best available value during group creation.

Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Message-Id: <20220902172737.170349-8-mjrosato@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-26 17:23:47 +02:00
Matthew Rosato
30dcf4f7fd s390x/pci: let intercept devices have separate PCI groups
Let's use the reserved pool of simulated PCI groups to allow intercept
devices to have separate groups from interpreted devices as some group
values may be different. If we run out of simulated PCI groups, subsequent
intercept devices just get the default group.
Furthermore, if we encounter any PCI groups from hostdevs that are marked
as simulated, let's just assign them to the default group to avoid
conflicts between host simulated groups and our own simulated groups.

Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Message-Id: <20220902172737.170349-7-mjrosato@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-26 17:23:47 +02:00
Matthew Rosato
d0bc7091c2 s390x/pci: enable adapter event notification for interpreted devices
Use the associated kvm ioctl operation to enable adapter event notification
and forwarding for devices when requested.  This feature will be set up
with or without firmware assist based upon the 'forwarding_assist' setting.

Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Message-Id: <20220902172737.170349-6-mjrosato@linux.ibm.com>
[thuth: Rename "forwarding_assist" property to "forwarding-assist"]
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-26 17:23:47 +02:00
Matthew Rosato
15d0e7942d s390x/pci: don't fence interpreted devices without MSI-X
Lack of MSI-X support is not an issue for interpreted passthrough
devices, so let's let these in.  This will allow, for example, ISM
devices to be passed through -- but only when interpretation is
available and being used.

Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Message-Id: <20220902172737.170349-5-mjrosato@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-26 17:23:47 +02:00
Matthew Rosato
dd1d5fd968 s390x/pci: enable for load/store interpretation
If the ZPCI_OP ioctl reports that is is available and usable, then the
underlying KVM host will enable load/store intepretation for any guest
device without a SHM bit in the guest function handle.  For a device that
will be using interpretation support, ensure the guest function handle
matches the host function handle; this value is re-checked every time the
guest issues a SET PCI FN to enable the guest device as it is the only
opportunity to reflect function handle changes.

By default, unless interpret=off is specified, interpretation support will
always be assumed and exploited if the necessary ioctl and features are
available on the host kernel.  When these are unavailable, we will silently
revert to the interception model; this allows existing guest configurations
to work unmodified on hosts with and without zPCI interpretation support,
allowing QEMU to choose the best support model available.

Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220902172737.170349-4-mjrosato@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-26 17:23:47 +02:00
Matthew Rosato
21fa15298d s390x/pci: add routine to get host function handle from CLP info
In order to interface with the underlying host zPCI device, we need
to know its function handle. Add a routine to grab this from the
vfio CLP capabilities chain.

Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Message-Id: <20220902172737.170349-3-mjrosato@linux.ibm.com>
[thuth: Replace free(info) with g_free(info)]
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-26 17:23:47 +02:00
Chenyi Qiang
d525f73f91 Update linux headers to v6.0-rc4
commit 7e18e42e4b280c85b76967a9106a13ca61c16179

Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20220915091035.3897-3-chenyi.qiang@intel.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-26 17:23:47 +02:00
Chenyi Qiang
28d01b1d69 configure: Add -Wno-gnu-variable-sized-type-not-at-end
A Linux headers update to v6.0-rc switches some definitions from GNU
'zero-length-array' extension to the C-standard-defined flexible array
member. e.g.

struct kvm_msrs {
        __u32 nmsrs; /* number of msrs in entries */
        __u32 pad;

-       struct kvm_msr_entry entries[0];
+       struct kvm_msr_entry entries[];
};

Those (unlike the GNU zero-length-array) have some extra restrictions like
'this must be put at the end of a struct', which clang build would complain
about. e.g. the current code

struct {
        struct kvm_msrs info;
        struct kvm_msr_entry entries[1];
} msr_data = { }

generates the warning like:

target/i386/kvm/kvm.c:2868:25: error: field 'info' with variable sized
type 'struct kvm_msrs' not at the end of a struct or class is a GNU
extension [-Werror,-Wgnu-variable-sized-type-not-at-end]
        struct kvm_msrs info;
                        ^
In fact, the variable length 'entries[]' field in 'info' is zero-sized in
GNU defined semantics, which can give predictable offset for 'entries[1]'
in local msr_data. The local defined struct is just there to force a stack
allocation large enough for 1 kvm_msr_entry, a clever trick but requires to
turn off this clang warning.

Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20220915091035.3897-2-chenyi.qiang@intel.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-26 17:23:47 +02:00
Jason A. Donenfeld
3dbc5fdacb target/s390x: support PRNO_TRNG instruction
In order for hosts running inside of TCG to initialize the kernel's
random number generator, we should support the PRNO_TRNG instruction,
backed in the usual way with the qemu_guest_getrandom helper. This is
confirmed working on Linux 5.19.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Message-Id: <20220921100729.2942008-2-Jason@zx2c4.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
[thuth: turn prno-trng off in avocado test to avoid breaking it]
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-26 17:23:11 +02:00
Jameson Nash
65d4830dac linux-user: fix readlinkat handling with magic exe symlink
Exactly the same as f17f4989fa before was
for readlink. I suppose this was simply missed at the time.

Signed-off-by: Jameson Nash <vtjnash@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220808190727.875155-1-vtjnash@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-23 23:43:45 +02:00
Jason A. Donenfeld
9f17bfdab4 target/s390x: support SHA-512 extensions
In order to fully support MSA_EXT_5, we have to support the SHA-512
special instructions. So implement those.

The implementation began as something TweetNacl-like, and then was
adjusted to be useful here. It's not very beautiful, but it is quite
short and compact, which is what we're going for.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
[ restructure, add missing exception, add comments, fixup CPU model ]
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20220922153820.221811-1-david@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-23 15:18:52 +02:00
Ilya Leoshkevich
ab9ccfa850 linux-user/host/s390: Add vector instructions to host_signal_write()
The new noexec test fails on s390x with "unexpected SEGV". This test
overwrites code using libc's memcpy(), which uses VSTL instruction.
host_signal_write() does not recognize it, which causes SEGV to be
incorrectly forwarded to the test.

Add all vector instructions that write to memory to
host_signal_write().

Fixes: ab12c95d3f ("target/s390x: Make translator stop before the end of a page")
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20220920113907.334144-1-iii@linux.ibm.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-23 15:16:16 +02:00
Qiang Liu
d8c2e6f2f6 hcd-ohci: Drop ohci_service_iso_td() if ed->head & OHCI_DPTR_MASK is zero
An abort happens in ohci_frame_boundary() when ohci->done is 0 [1].

``` c
static void ohci_frame_boundary(void *opaque)
{
    // ...
    if (ohci->done_count == 0 && !(ohci->intr_status & OHCI_INTR_WD)) {
        if (!ohci->done)
            abort(); <----------------------------------------- [1]
```

This was reported in https://bugs.launchpad.net/qemu/+bug/1911216/,
https://lists.gnu.org/archive/html/qemu-devel/2021-06/msg03613.html, and
https://gitlab.com/qemu-project/qemu/-/issues/545. I can still reproduce it with
the latest QEMU.

This happends due to crafted ED with putting ISO_TD at physical address 0.

Suppose ed->head & OHCI_DPTR_MASK is 0 [2], and we memset 0 to the phyiscal
memory from 0 to sizeof(ohci_iso_td). Then, starting_frame [3] and frame_count
[4] are both 0. As we can control the value of ohci->frame_number (0 to 0x1f,
suppose 1), we then control the value of relative_frame_number to be 1 [6]. The
control flow goes to [7] where ohci->done is 0. Have returned from
ohci_service_iso_td(), ohci_frame_boundary() will abort() [1].

``` c
static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed)
{
    // ...
    addr = ed->head & OHCI_DPTR_MASK; // <--------------------- [2]

    if (ohci_read_iso_td(ohci, addr, &iso_td)) {   // <-------- [3]
        // ...

    starting_frame = OHCI_BM(iso_td.flags, TD_SF); // <-------- [4]
    frame_count = OHCI_BM(iso_td.flags, TD_FC);    // <-------- [5]
    relative_frame_number = USUB(ohci->frame_number, starting_frame);
                                                   // <-------- [6]
    if (relative_frame_number < 0) {
        return 1;
    } else if (relative_frame_number > frame_count) {
        // ...
        ohci->done = addr;                         // <-------- [7]
        // ...
    }
```

As only (afaik) a guest root user can manipulate ED, TD and the physical memory,
this assertion failure is not a security bug.

The idea to fix this issue is to drop ohci_service_iso_td() if ed->head &
OHCI_DPTR_MASK is 0, which is similar to the drop operation for
ohci_service_ed_list() when head is 0. Probably, a similar issue is in
ohci_service_td(). I drop ohci_service_td() if ed->head & OHCI_DPTR_MASK is 0.

Fixes: 7bfe577702 ("OHCI USB isochronous transfers support (Arnon Gilboa)")
Reported-by: Gaoning Pan <pgn@zju.edu.cn>
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Reported-by: Qiang Liu <cyruscyliu@gmail.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/545
Buglink: https://lists.gnu.org/archive/html/qemu-devel/2021-06/msg03613.html
Buglink: https://bugs.launchpad.net/qemu/+bug/1911216
Signed-off-by: Qiang Liu <cyruscyliu@gmail.com>
Message-Id: <20220826051557.119570-1-cyruscyliu@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 14:38:27 +02:00
Thomas Huth
0b33bb394d hw/usb/hcd-xhci: Check whether DMA accesses fail
If a guest sets up bad descriptors, it could force QEMU to access
non-existing memory regions. Thus we should check the return value
of dma_memory_read/write() to make sure that these errors don't go
unnoticed.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220817160016.49752-1-thuth@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 14:38:27 +02:00
Volker Rümelin
17b55372b5 ui/console: fix three double frees in png_save()
The png_destroy_write_struct() function frees all memory used by
libpng. Don't use the glib auto cleanup mechanism to free the
memory allocated by libpng again. For the pixman image, use only the
auto cleanup mechanism and remove the qemu_pixman_image_unref()
function call to prevent another double free.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1210
Fixes: 9a0a119a38 ("Added parameter to take screenshot with screendump as PNG")
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20220919061956.30929-1-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 14:38:27 +02:00
Marc-André Lureau
d18431547f ui/vdagent: fix serial reset of guest agent
In order to reset the guest agent, we send CLOSED & OPENED events.

They are correctly received by the guest kernel. However, they might not
be noticed by the guest agent process, as the IO task (poll() for
example) might be wake up after both CLOSED & OPENED have been
processed.

Wait until the guest agent is disconnected to re-open our side.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220912102455.111765-6-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 14:38:27 +02:00
Marc-André Lureau
72ce36f77c ui/clipboard: reset the serial state on reset
Not only we have to reset the vdagent clipboards serial state, but also
the current QEMU clipboards info serial (the value is currently used by
qemu_clipboard_check_serial, only used by -display dbus).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220912102455.111765-5-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 14:38:27 +02:00
Marc-André Lureau
e46d4d6842 ui/vdagent: always reset the clipboard serial on caps
The guest agent doesn't know what is the current serial state. Reset the
serial value whenever a new agent connection is established.

Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=2124446

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220912102455.111765-4-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 14:38:27 +02:00
Marc-André Lureau
0e23ae9c65 ui/clipboard: fix serial priority
The incoming grab event should have a higher serial.
See also "vdagent: introduce VD_AGENT_CAP_CLIPBOARD_GRAB_SERIAL":
045a6978d6

This is only a relevant fix for the -display dbus, only user of that
function.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220912102455.111765-3-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 14:38:27 +02:00
Marc-André Lureau
410840cdb1 ui: add some vdagent related traces
This helps debugging clipboard serial sync issues.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220912102455.111765-2-marcandre.lureau@redhat.com>

[ kraxel: code style fix ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 14:38:23 +02:00
Akihiko Odaki
64d3fec76c meson: Allow to enable gtk and sdl while cocoa is enabled
As ui/cocoa does no longer override main(), ui/gtk and ui/sdl
can be enabled even ui/cocoa is enabled.

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220819132756.74641-4-akihiko.odaki@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 14:36:33 +02:00
Akihiko Odaki
2dc7f90a83 Revert "main-loop: Disable block backend global state assertion on Cocoa"
This reverts commit 47281859f6.

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220819132756.74641-3-akihiko.odaki@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 14:36:33 +02:00
Akihiko Odaki
bab6a301c5 ui/cocoa: Run qemu_init in the main thread
This work is based on:
https://patchew.org/QEMU/20220317125534.38706-1-philippe.mathieu.daude@gmail.com/

Simplify the initialization dance by running qemu_init() in the main
thread before the Cocoa event loop starts. The secondary thread only
runs only qemu_main_loop() and qemu_cleanup().

This fixes a case where addRemovableDevicesMenuItems() calls
qmp_query_block() while expecting the main thread to still hold
the BQL.

Overriding the code after calling qemu_init() is done by dynamically
replacing a function pointer variable, qemu_main when initializing
ui/cocoa, which unifies the static implementation of main() for
builds with ui/cocoa and ones without ui/cocoa.

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Message-Id: <20220819132756.74641-2-akihiko.odaki@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 14:36:33 +02:00
Daniel P. Berrangé
d135f78140 linux-user: use 'max' instead of 'qemu32' / 'qemu64' by default
The 'qemu64' CPU model implements the least featureful x86_64 CPU that's
possible. Historically this hasn't been an issue since it was rare for
OS distros to build with a higher mandatory CPU baseline.

With RHEL-9, however, the entire distro is built for the x86_64-v2 ABI
baseline:

  https://developers.redhat.com/blog/2021/01/05/building-red-hat-enterprise-linux-9-for-the-x86-64-v2-microarchitecture-level

It is likely that other distros may take similar steps in the not too
distant future. For example, it has been suggested for Fedora on a
number of occasions.

This new baseline is not compatible with the qemu64 CPU model though.
While it is possible to pass a '-cpu xxx' flag to qemu-x86_64, the
usage of QEMU doesn't always allow for this. For example, the args
are typically controlled via binfmt rules that the user has no ability
to change. This impacts users who are trying to use podman on aarch64
platforms, to run containers with x86_64 content. There's no arg to
podman that can be used to change the qemu-x86_64 args, and a non-root
user of podman can not change binfmt rules without elevating privileges:

  https://github.com/containers/podman/issues/15456#issuecomment-1228210973

Changing to the 'max' CPU model gives 'qemu-x86_64' maximum
compatibility with binaries it is likely to encounter in the wild,
and not likely to have a significant downside for existing usage.

Most other architectures already use an 'any' CPU model, which is
often mapped to 'max' (or similar) already, rather than the oldest
possible CPU model.

For the sake of consistency the 'i386' architecture is also changed
from using 'qemu32' to 'max'.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220923110413.70593-1-berrange@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-23 14:04:17 +02:00
Cal Peake
df6322a897 ui/console: Get tab completion working again in the SDL monitor vc
Define a QEMU special key constant for the tab key and add an entry for
it in the qcode_to_keysym table. This allows tab completion to work again
in the SDL monitor virtual console, which has been broken ever since the
migration from SDL1 to SDL2.

Signed-off-by: Cal Peake <cp@absolutedigital.net>
Message-Id: <7054816e-99c-7e2-6737-7cf98cc56e2@absolutedigital.net>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-09-23 13:42:09 +02:00
Christian Borntraeger
131aafa7ef s390x/tcg: Fix opcode for lzrf
Fix the opcode for Load and Zero Rightmost Byte (32).

Fixes: c2a5c1d718 ("target/s390x: Implement load-and-zero-rightmost-byte insns")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: qemu-stable@nongnu.org
Message-Id: <20220914105750.767697-1-borntraeger@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-23 08:36:07 +02:00
Stefan Hajnoczi
6160d8ff81 Xilinx queue
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Merge tag 'edgar/xilinx-next-2022-09-21.for-upstream' of https://github.com/edgarigl/qemu into staging

Xilinx queue

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# gpg: Signature made Wed 21 Sep 2022 15:45:40 EDT
# gpg:                using RSA key AC44FEDC14F7F1EBEDBF415129C596780F6BCA83
# gpg: Good signature from "Edgar E. Iglesias (Xilinx key) <edgar.iglesias@xilinx.com>" [unknown]
# gpg:                 aka "Edgar E. Iglesias <edgar.iglesias@gmail.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: AC44 FEDC 14F7 F1EB EDBF  4151 29C5 9678 0F6B CA83

* tag 'edgar/xilinx-next-2022-09-21.for-upstream' of https://github.com/edgarigl/qemu:
  hw/microblaze: pass random seed to fdt

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-09-22 13:24:28 -04:00
Stefan Hajnoczi
394876e008 Hexagon update
remove unused encodings
     add fmin/fmax tests for signed zero
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Merge tag 'pull-hex-20220919' of https://github.com/quic/qemu into staging

Hexagon update
    remove unused encodings
    add fmin/fmax tests for signed zero

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# gpg: Signature made Mon 19 Sep 2022 14:57:54 EDT
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# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
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* tag 'pull-hex-20220919' of https://github.com/quic/qemu:
  Hexagon (tests/tcg/hexagon): add fmin/fmax tests for signed zero
  Hexagon (target/hexagon) remove unused encodings

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-09-22 13:21:50 -04:00
Yusuke Okada
f16d15c927 virtiofsd: use g_date_time_get_microsecond to get subsecond
The "%f" specifier in g_date_time_format() is only available in glib
2.65.2 or later. If combined with older glib, the function returns null
and the timestamp displayed as "(null)".

For backward compatibility, g_date_time_get_microsecond should be used
to retrieve subsecond.

In this patch the g_date_time_format() leaves subsecond field as "%06d"
and let next snprintf to format with g_date_time_get_microsecond.

Signed-off-by: Yusuke Okada <okada.yusuke@jp.fujitsu.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: 20220818184618.2205172-1-yokada.996@gmail.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-09-22 13:13:47 -04:00
Peter Maydell
b3b5472db0 configure: Avoid use of 'local' as it is non-POSIX
We use the non-POSIX 'local' keyword in just two places in configure;
rewrite to avoid it.

In do_compiler(), just drop the 'local' keyword.  The variable
'compiler' is only used elsewhere in the do_compiler_werror()
function, which already uses the variable as a normal non-local one.

In probe_target_compiler(), $try and $t are both local; make them
normal variables and use a more obviously distinct variable name
for $t.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20220825150703.4074125-8-peter.maydell@linaro.org
2022-09-22 16:38:29 +01:00
Peter Maydell
563661c056 configure: Check mkdir result directly, not via $?
Shellcheck warns that we have one place where we run a command and
then check if it failed using $?; this is better written to simply
check the command in the 'if' statement directly.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20220825150703.4074125-7-peter.maydell@linaro.org
2022-09-22 16:38:29 +01:00
Peter Maydell
cc3c71e89f configure: Remove use of backtick ... syntax
There's only one place in configure where we use `...` to execute a
command and capture the result.  Switch to $() to match the rest of
the script. This silences a shellcheck warning.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20220825150703.4074125-6-peter.maydell@linaro.org
2022-09-22 16:38:29 +01:00
Peter Maydell
002d8c13df configure: Add './' on front of glob of */config-devices.mak.d
Shellcheck warns that in
 rm -f */config-devices.mak.d
the glob might expand to something with a '-' in it, which would
then be misinterpreted as an option to rm. Fix this by adding './'.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20220825150703.4074125-5-peter.maydell@linaro.org
2022-09-22 16:38:29 +01:00
Peter Maydell
64708615e7 configure: Add missing quoting for some easy cases
This commit adds quotes in some places which:
 * are spotted by shellcheck
 * are obviously incorrect
 * are easy to fix just by adding the quotes

It doesn't attempt fix all of the places shellcheck finds errors,
or even all the ones which are easy to fix. It's just a random
sampling which is hopefully easy to review and which cuts
down the size of the problem for next time somebody wants to
try to look at shellcheck errors.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20220825150703.4074125-4-peter.maydell@linaro.org
2022-09-22 16:38:29 +01:00
Peter Maydell
cbbc44d8ef configure: Remove unused meson_args variable
The meson_args variable was added in commit 3b4da13293, but
was not used in that commit and isn't used today.  Delete the
unnecessary assignment.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20220825150703.4074125-3-peter.maydell@linaro.org
2022-09-22 16:38:29 +01:00
Peter Maydell
342cf30413 configure: Remove unused python_version variable
Shellcheck correctly reports that we set python_version and never use
it.  This is a leftover from commit f933275789: we used to use
python_version purely to as part of the summary information printed
at the end of a configure run, and that commit changed to printing
the information from meson (which looks up the python version
itself). Remove the unused variable.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20220825150703.4074125-2-peter.maydell@linaro.org
2022-09-22 16:38:29 +01:00
Philippe Mathieu-Daudé
972d325a8d tests/unit/test-vmstate: Avoid dynamic stack allocation
Use autofree heap allocation instead of variable-length
array on the stack.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20220819153931.3147384-12-peter.maydell@linaro.org
2022-09-22 16:38:28 +01:00