Commit Graph

58629 Commits

Author SHA1 Message Date
Richard Henderson
3f68b8a5a6 target/arm: Change the type of vfp.regs
All direct users of this field want an integral value.  Drop all
of the extra casting between uint64_t and float64.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180119045438.28582-6-richard.henderson@linaro.org
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-25 11:45:28 +00:00
Richard Henderson
e7c06c4e4c target/arm: Use pointers in neon tbl helper
Rather than passing a regno to the helper, pass pointers to the
vector register directly.  This eliminates the need to pass in
the environment pointer and reduces the number of places that
directly access env->vfp.regs[].

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180119045438.28582-5-richard.henderson@linaro.org
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-25 11:45:28 +00:00
Richard Henderson
b13708bbbd target/arm: Use pointers in neon zip/uzp helpers
Rather than passing regnos to the helpers, pass pointers to the
vector registers directly.  This eliminates the need to pass in
the environment pointer and reduces the number of places that
directly access env->vfp.regs[].

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20180119045438.28582-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-25 11:45:28 +00:00
Richard Henderson
1a66ac61af target/arm: Use pointers in crypto helpers
Rather than passing regnos to the helpers, pass pointers to the
vector registers directly.  This eliminates the need to pass in
the environment pointer and reduces the number of places that
directly access env->vfp.regs[].

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20180119045438.28582-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-25 11:45:28 +00:00
Richard Henderson
cf96a68248 target/arm: Mark disas_set_insn_syndrome inline
If it isn't used when translate.h is included,
we'll get a compiler Werror.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20180119045438.28582-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-25 11:45:28 +00:00
Jean-Christophe Dubois
1b58d58f76 i.MX: Fix FEC/ENET receive funtions
The actual imx_eth_enable_rx() function is buggy.

It updates s->regs[ENET_RDAR] after calling qemu_flush_queued_packets().

qemu_flush_queued_packets() is going to call imx_XXX_receive() which itself
is going to call imx_eth_enable_rx().

By updating s->regs[ENET_RDAR] after calling qemu_flush_queued_packets()
we end up updating the register with an outdated value which might
lead to disabling the receive function in the i.MX FEC/ENET device.

This patch change the place where the register update is done so that the
register value stays up to date and the receive function can keep
running.

Reported-by: Fyleo <fyleo45@gmail.com>
Tested-by: Fyleo  <fyleo45@gmail.com>
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Message-id: 20180113113445.2705-1-jcd@tribudubois.net
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Tested-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-25 11:45:28 +00:00
Ard Biesheuvel
9aea1ea31a target/arm: Fix 32-bit address truncation
Commit ("3b39d734141a target/arm: Handle page table walk load failures
correctly") modified both versions of the page table walking code (i.e.,
arm_ldl_ptw and arm_ldq_ptw) to record the result of the translation in
a temporary 'data' variable so that it can be inspected before being
returned. However, arm_ldq_ptw() returns an uint64_t, and using a
temporary uint32_t variable truncates the upper bits, corrupting the
result. This causes problems when using more than 4 GB of memory in
a TCG guest. So use a uint64_t instead.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Message-id: 20180119194648.25501-1-ard.biesheuvel@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-25 11:45:28 +00:00
Peter Maydell
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Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-2.12-pull-request' into staging

# gpg: Signature made Tue 23 Jan 2018 14:47:41 GMT
# gpg:                using RSA key 0xF30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>"
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>"
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>"
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-2.12-pull-request:
  linux-user: implement renameat2
  page_unprotect(): handle calls to pages that are PAGE_WRITE
  linux-user: Propagate siginfo_t through to handle_cpu_signal()
  linux-user: remove nmi.c and fw-path-provider.c
  linux-user: Add getcpu() support
  linux-user: Add AT_SECURE auxval
  linux-user: Fix sched_get/setaffinity conversion
  linux-user/mmap.c: Avoid choosing NULL as start address
  linux-user: Translate flags argument to dup3 syscall
  linux-user: Don't use CMSG_ALIGN(sizeof struct cmsghdr)
  linux-user: Fix length calculations in host_to_target_cmsg()
  linux-user: wrap fork() in a start/end exclusive section
  linux-user: Fix locking order in fork_start()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-25 09:53:53 +00:00
linzhecheng
191f59dc17 vga: check the validation of memory addr when draw text
Start a vm with qemu-kvm -enable-kvm -vnc :66 -smp 1 -m 1024 -hda
redhat_5.11.qcow2  -device pcnet -vga cirrus,
then use VNC client to connect to VM, and excute the code below in guest
OS will lead to qemu crash:

int main()
 {
    iopl(3);
    srand(time(NULL));
    int a,b;
    while(1){
	a = rand()%0x100;
	b = 0x3c0 + (rand()%0x20);
        outb(a,b);
    }
    return 0;
}

The above code is writing the registers of VGA randomly.
We can write VGA CRT controller registers index 0x0C or 0x0D
(which is the start address register) to modify the
the display memory address of the upper left pixel
or character of the screen. The address may be out of the
range of vga ram. So we should check the validation of memory address
when reading or writing it to avoid segfault.

Signed-off-by: linzhecheng <linzhecheng@huawei.com>
Message-id: 20180111132724.13744-1-linzhecheng@huawei.com
Fixes: CVE-2018-5683
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-01-25 10:18:39 +01:00
Peter Maydell
f78b6f9b11 Block layer patches
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

# gpg: Signature made Tue 23 Jan 2018 12:38:36 GMT
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (29 commits)
  iotests: Disable some tests for compat=0.10
  iotests: Split 177 into two parts for compat=0.10
  iotests: Make 059 pass on machines with little RAM
  iotests: Filter compat-dependent info in 198
  iotests: Make 191 work with qcow2 options
  iotests: Make 184 image-less
  iotests: Make 089 compatible with compat=0.10
  iotests: Fix 067 for compat=0.10
  iotests: Fix 059's reference output
  iotests: Fix 051 for compat=0.10
  iotests: Fix 020 for vmdk
  iotests: Skip 103 for refcount_bits=1
  iotests: Forbid 020 for non-file protocols
  iotests: Drop format-specific in _filter_img_info
  iotests: Fix _img_info for backslashes
  block/vmdk: Add blkdebug events
  block/qcow: Add blkdebug events
  qcow2: No persistent dirty bitmaps for compat=0.10
  block/vmdk: Fix , instead of ; at end of line
  qemu-iotests: Fix locking issue in 102
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-24 22:55:57 +00:00
Peter Maydell
834a336eb9 virtio: quick fix
Fixes a regression in virtio that's causing issues
 for many people.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio: quick fix

Fixes a regression in virtio that's causing issues
for many people.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Wed 24 Jan 2018 17:20:24 GMT
# gpg:                using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream:
  Revert "qemu: add a cleanup callback function to EventNotifier"
  Revert "virtio: postpone the execution of event_notifier_cleanup function"
  Revert "virtio: improve virtio devices initialization time"

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-24 19:24:26 +00:00
Mark Cave-Ayland
bfec08b51c sabre: convert from SABRE_DPRINTF macro to trace-events
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
CC: Michael S. Tsirkin <mst@redhat.com>
CC: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com>
[for addition of trace-events to hw/pci-host]
Acked-by: Michael S. Tsirkin <mst@redhat.com>
2018-01-24 19:19:51 +00:00
Mark Cave-Ayland
9b30179460 apb: rename apb.c to sabre.c
This is the final stage in correcting the naming convention with respect to
sabre, APB and PBM. It is effectively a file rename from apb.c to sabre.c
along with touching up a few constants to remove the remaining references
to APB.

Note that as part of the rename process the configuration variable
CONFIG_PCI_APB is changed to CONFIG_PCI_SABRE.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com>
2018-01-24 19:19:51 +00:00
Mark Cave-Ayland
5795162a9f sun4u: rename apb variables and constants
In order to reflect the previous change of TYPE_APB to TYPE_SABRE, update
the corresponding variable names to keep the terminology consistent.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com>
2018-01-24 19:19:51 +00:00
Mark Cave-Ayland
b14dcaf4a0 apb: rename QOM type from TYPE_APB to TYPE_SABRE
Similarly rename the corresponding APBState typedef to SabreState.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com>
2018-01-24 19:19:51 +00:00
Mark Cave-Ayland
8fb28035aa apb: QOMify sabre PCI host bridge
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com>
2018-01-24 19:19:51 +00:00
Mark Cave-Ayland
5560c58a50 apb: change pbm_pci_host prefix functions to use sabre_pci prefix
This is the proper name for the PBM host bridge as referenced in the Sun
documentation.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com>
2018-01-24 19:19:50 +00:00
Mark Cave-Ayland
fe984c7d0c apb: rename APB functions to use sabre prefix
As hinted in the comment at the top of the file, the naming convention for the
APB types/QOM functions isn't correct. As a starting point we can at least
rename the APB type and related functions to improve the readability of apb.c.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com>
2018-01-24 19:19:50 +00:00
Mark Cave-Ayland
90302adaba simba: rename PBMPCIBridge and QOM types to reflect simba naming
Here we rename PBMPCIBridge to SimbaPCIBridge and the QOM type from
TYPE_PBM_PCI_BRIDGE to TYPE_SIMBA_PCI_BRIDGE in improve the clarity
of the device name.

Also touch up the relevant spots in apb.c and various other function
names as appropriate.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com>
2018-01-24 19:19:50 +00:00
Mark Cave-Ayland
ffd9589ee2 apb: split simba PCI bridge into hw/pci-bridge/simba.c
Move the QOM type and macros into a new include/hw/pci-bridge/simba.h
file, and add a new CONFIG_SIMBA Makefile.objs variable which is enabled
for sparc64-softmmu builds only.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
CC: Michael S. Tsirkin <mst@redhat.com>
CC: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com>
2018-01-24 19:19:50 +00:00
Jean-Christophe Dubois
05b9ec96c1 sparc/leon3 irqmp: fix IRQ software ack
With the LEON3 IRQ controller IRQs can be acknowledged 2 ways:
* Explicitly by software writing to the CLEAR_OFFSET register
* Implicitly when the procesor is done running the trap handler attached
  to the IRQ.

The actual IRQMP code only allows the implicit processor triggered IRQ ack.
If software write explicitly to the CLEAR_OFFSET register, this will clear
the pending bit in the register value but this will not lower the ongoing
raised IRQ with the processor. The IRQ will be kept raised to the LEON
processor until the related trap handler is run and the processor implicitly
ack the interrupt. So with the actual IRQMP code trap handler have to be run
even if the software has already done its job by clearing the pending bit.

This feature has been tested on another LEON3 simulator (tsim_leon3 from
Gaisler) and it turns out that the Qemu implementation is not equivalent to
the tsim one. In tsim, if software does clear a pending interrupt before
the related interrupt handler is triggered the said interrupt handler will
not be called.

This patch brings the Qemu IRQMP implementation in line with the tsim
implementation by allowing IRQ to be acknowledged by software only.

Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Reviewed-by: Fabien Chouteau <chouteau@adacore.com>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2018-01-24 19:19:50 +00:00
Michael S. Tsirkin
e044c0f8dd Revert "qemu: add a cleanup callback function to EventNotifier"
This reverts commit f87d72f5c5 as that is
part of a patchset reported to break cleanup and migration.

Cc: Gal Hammer <ghammer@redhat.com>
Cc: Sitong Liu <siliu@redhat.com>
Cc: Xiaoling Gao <xiagao@redhat.com>
Suggested-by: Greg Kurz <groug@kaod.org>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reported-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
Reported-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
2018-01-24 19:20:19 +02:00
Michael S. Tsirkin
1ef8185a06 Revert "virtio: postpone the execution of event_notifier_cleanup function"
This reverts commit 4fe6d78b2e as it is
reported to break cleanup and migration.

Cc: Gal Hammer <ghammer@redhat.com>
Cc: Sitong Liu <siliu@redhat.com>
Cc: Xiaoling Gao <xiagao@redhat.com>
Suggested-by: Greg Kurz <groug@kaod.org>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reported-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
Reported-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
2018-01-24 19:20:19 +02:00
Michael S. Tsirkin
ce3a9eaff4 Revert "virtio: improve virtio devices initialization time"
This reverts commit 6f0bb23072.

This reverts commit f87d72f5c5 as that is
reported to break cleanup and migration.

Cc: Gal Hammer <ghammer@redhat.com>
Cc: Sitong Liu <siliu@redhat.com>
Cc: Xiaoling Gao <xiagao@redhat.com>
Suggested-by: Greg Kurz <groug@kaod.org>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reported-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
Reported-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
2018-01-24 19:20:19 +02:00
Peter Maydell
82de978a8b target/xtensa updates:
- make mini-bootloader independent of the initial CPU state;
 - add noMMU XTFPGA variants;
 - add two noMMU cores: de212 and sample_controller;
 - fix issues reported by coverity against xtensa translator and disassembler.
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 gy8+yJrXbEWPHeWZ4MtX
 =qf0K
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/xtensa/tags/20180122-xtensa' into staging

target/xtensa updates:

- make mini-bootloader independent of the initial CPU state;
- add noMMU XTFPGA variants;
- add two noMMU cores: de212 and sample_controller;
- fix issues reported by coverity against xtensa translator and disassembler.

# gpg: Signature made Mon 22 Jan 2018 20:00:01 GMT
# gpg:                using RSA key 0x51F9CC91F83FA044
# gpg: Good signature from "Max Filippov <filippov@cadence.com>"
# gpg:                 aka "Max Filippov <max.filippov@cogentembedded.com>"
# gpg:                 aka "Max Filippov <jcmvbkbc@gmail.com>"
# Primary key fingerprint: 2B67 854B 98E5 327D CDEB  17D8 51F9 CC91 F83F A044

* remotes/xtensa/tags/20180122-xtensa:
  target/xtensa: disas/xtensa: fix coverity warnings
  target/xtensa: add sample_controller core
  target/xtensa: allow different default CPU for MMU/noMMU
  target/xtensa: add de212 core
  hw/xtensa/xtfpga: support noMMU cores
  hw/xtensa/xtfpga: extract flash configuration
  hw/xtensa: extract xtensa_create_memory_regions
  target/xtensa: fix default sysrom/sysram addresses
  hw/xtensa/xtfpga: clean up function/structure names
  hw/xtensa/xtfpga: rewrite mini bootloader

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-24 16:59:36 +00:00
Peter Maydell
25bfd5a75f Pull request
v2:
  * Drop merge failure from a previous pull request that broke virtio-blk on ARM
    guests
  * Add Parallels XML patch series
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 =mjmD
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Pull request

v2:
 * Drop merge failure from a previous pull request that broke virtio-blk on ARM
   guests
 * Add Parallels XML patch series

# gpg: Signature made Mon 22 Jan 2018 16:00:40 GMT
# gpg:                using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/block-pull-request:
  block/parallels: add backing support to readv/writev
  block/parallels: replace some magic numbers
  block/parallels: move some structures into header
  configure: add dependency
  docs/interop/prl-xml: description of Parallels Disk format
  block: add block_set_io_throttle virtio-blk-pci QMP example

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-24 15:28:36 +00:00
Andreas Schwab
95d0307cc1 linux-user: implement renameat2
This is needed for new architectures like RISC-V which do not provide any
other rename-like syscall.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <mvm607su9qs.fsf@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-01-23 14:27:33 +01:00
Peter Maydell
9c4bbee9e3 page_unprotect(): handle calls to pages that are PAGE_WRITE
If multiple guest threads in user-mode emulation write to a
page which QEMU has marked read-only because of cached TCG
translations, the threads can race in page_unprotect:

 * threads A & B both try to do a write to a page with code in it at
   the same time (ie which we've made non-writeable, so SEGV)
 * they race into the signal handler with this faulting address
 * thread A happens to get to page_unprotect() first and takes the
   mmap lock, so thread B sits waiting for it to be done
 * A then finds the page, marks it PAGE_WRITE and mprotect()s it writable
 * A can then continue OK (returns from signal handler to retry the
   memory access)
 * ...but when B gets the mmap lock it finds that the page is already
   PAGE_WRITE, and so it exits page_unprotect() via the "not due to
   protected translation" code path, and wrongly delivers the signal
   to the guest rather than just retrying the access

In particular, this meant that trying to run 'javac' in user-mode
emulation would fail with a spurious guest SIGSEGV.

Handle this by making page_unprotect() assume that a call for a page
which is already PAGE_WRITE is due to a race of this sort and return
a "fault handled" indication.

Since this would cause an infinite loop if we ever called
page_unprotect() for some other kind of fault than "write failed due
to bad access permissions", tighten the condition in
handle_cpu_signal() to check the signal number and si_code, and add a
comment so that if somebody does ever find themselves debugging an
infinite loop of faults they have some clue about why.

(The trick for identifying the correct setting for
current_tb_invalidated for thread B (needed to handle the precise-SMC
case) is due to Richard Henderson.  Paolo Bonzini suggested just
relying on si_code rather than trying anything more complicated.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1511879725-9576-3-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-01-23 14:20:53 +01:00
Peter Maydell
a78b1299f1 linux-user: Propagate siginfo_t through to handle_cpu_signal()
Currently all the architecture/OS specific cpu_signal_handler()
functions call handle_cpu_signal() without passing it the
siginfo_t. We're going to want that so we can look at the si_code
to determine whether this is a SEGV_ACCERR access violation or
some other kind of fault, so change the functions to pass through
the pointer to the siginfo_t rather than just the si_addr value.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1511879725-9576-2-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-01-23 14:20:52 +01:00
Laurent Vivier
bfdec7f80e linux-user: remove nmi.c and fw-path-provider.c
linux-user binaries don't need firmware and NMI,
so don't add them in this case, move QDEV
firmware functions to qdev-fw.c

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20171103193802.11876-1-laurent@vivier.eu>
2018-01-23 14:20:52 +01:00
Samuel Thibault
b827c3ed30 linux-user: Add getcpu() support
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180112081435.21299-1-samuel.thibault@ens-lyon.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-01-23 14:20:52 +01:00
Marco A L Barbosa
444cd5c3ae linux-user: Add AT_SECURE auxval
Signed-off-by: Marco A L Barbosa <malbarbo@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180111183714.22834-2-malbarbo@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-01-23 14:20:52 +01:00
Samuel Thibault
2e0a8713bd linux-user: Fix sched_get/setaffinity conversion
sched_get/setaffinity linux-user syscalls were missing conversions for
little/big endian, which is hairy since longs may not be the same size
either.

For simplicity, this just introduces loops to convert bit by bit like is
done for select.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180109201643.1479-1-samuel.thibault@ens-lyon.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-01-23 14:20:52 +01:00
Maximilian Riemensberger
95e6d4305a linux-user/mmap.c: Avoid choosing NULL as start address
mmap() is required by the linux kernel ABI and POSIX to return a
non-NULL address when the implementation chooses a start address for the
mapping.

The current implementation of mmap_find_vma_reserved() can return NULL
as start address of a mapping which leads to subsequent crashes inside
the guests glibc, e.g. output of qemu-arm-static --strace executing a
test binary stx_test:

    1879 mmap2(NULL,8388608,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS|0x20000,-1,0) = 0x00000000
    1879 write(2,0xf6fd39d0,79) stx_test: allocatestack.c:514: allocate_stack: Assertion `mem != NULL' failed.

This patch fixes mmap_find_vma_reserved() by skipping NULL as start
address while searching for a suitable mapping start address.

CC: Riku Voipio <riku.voipio@iki.fi>
CC: Laurent Vivier <laurent@vivier.eu>
CC: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Maximilian Riemensberger <riemensberger@cadami.net>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1515286904-86418-1-git-send-email-riemensberger@cadami.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-01-23 14:20:52 +01:00
Peter Maydell
10fa993aae linux-user: Translate flags argument to dup3 syscall
The third argument to dup3() is a flags word which may be
O_CLOEXEC. We weren't translating this flag from target to
host value, which meant that if the target used a different
value from the host (eg sparc guest and x86 host) the dup3()
call would fail EINVAL. Do the correct translation.

Fixes: https://bugs.launchpad.net/qemu/+bug/1704658
Reported-by: Bruno Haible  <bruno@clisp.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1513351080-25917-1-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-01-23 14:20:52 +01:00
Peter Maydell
ad762b990f linux-user: Don't use CMSG_ALIGN(sizeof struct cmsghdr)
The Linux struct cmsghdr is already guaranteed to be sufficiently
aligned that CMSG_ALIGN(sizeof struct cmsghdr) is always equal
to sizeof struct cmsghdr. Stop doing the unnecessary alignment
arithmetic for host and target cmsghdr.

This follows kernel commit 1ff8cebf49ed9e9ca2 and brings our
TARGET_CMSG_* macros back into line with the kernel ones,
as well as making them easier to understand.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1513345976-22958-3-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-01-23 14:20:52 +01:00
Peter Maydell
7174970a94 linux-user: Fix length calculations in host_to_target_cmsg()
The handling of length calculations in host_to_target_cmsg()
was rather confused:
 * when checking for whether the target cmsg header fit in
   the remaining buffer, we were using the host struct size,
   not the target size
 * we were setting tgt_len to "target payload + header length"
   but then using it as if it were the target payload length alone
 * in various message type cases we weren't handling the possibility
   that host or target buffers were truncated

Fix these problems. The second one in particular is liable
to result in us overrunning the guest provided buffer,
since we will try to convert more data than is actually
present.

Fixes: https://bugs.launchpad.net/qemu/+bug/1701808
Reported-by: Bruno Haible  <bruno@clisp.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1513345976-22958-2-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-01-23 14:20:52 +01:00
Peter Maydell
06065c451f linux-user: wrap fork() in a start/end exclusive section
When we do a fork() in usermode emulation, we need to be in
a start/end exclusive section, so that we can ensure that no
other thread is in an RCU section. Otherwise you can get this
deadlock:

- fork thread: has mmap_lock, waits for rcu_sync_lock
  (because rcu_init_lock() is registered as a pthread_atfork() hook)
- RCU thread: has rcu_sync_lock, waits for rcu_read_(un)lock
- another CPU thread: in RCU critical section, waits for mmap_lock

This can show up if you have a heavily multithreaded guest program
that does a fork().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reported-by: Stuart Monteith <stuart.monteith@linaro.org>
Message-Id: <1512650481-1723-1-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-01-23 14:20:52 +01:00
Peter Maydell
024949caf3 linux-user: Fix locking order in fork_start()
Our locking order is that the tb lock should be taken
inside the mmap_lock, but fork_start() grabs locks the
other way around. This means that if a heavily multithreaded
guest process (such as Java) calls fork() it can deadlock,
with the thread that called fork() stuck in fork_start()
with the tb lock and waiting for the mmap lock, but some
other thread in tb_find() with the mmap lock and waiting
for the tb lock. The cpu_list_lock() should also always be
taken last, not first.

Fix this by making fork_start() grab the locks in the
right order. The order in which we drop locks doesn't
matter, so we leave fork_end() the way it is.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-stable@nongnu.org
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <1512397331-15238-1-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-01-23 14:20:52 +01:00
Peter Maydell
238e2d93c9 Various fixes/improvements, and support for the new 81/82
facility bits.
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Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20180122' into staging

Various fixes/improvements, and support for the new 81/82
facility bits.

# gpg: Signature made Mon 22 Jan 2018 11:54:46 GMT
# gpg:                using RSA key 0xDECF6B93C6F02FAF
# gpg: Good signature from "Cornelia Huck <conny@cornelia-huck.de>"
# gpg:                 aka "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
# gpg:                 aka "Cornelia Huck <cohuck@kernel.org>"
# gpg:                 aka "Cornelia Huck <cohuck@redhat.com>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20180122:
  s390x/kvm: provide stfle.81
  s390x/kvm: Handle bpb feature
  linux-headers: update
  s390x/tcg: fixup TEST PROTECTION
  s390x: fix storage attributes migration for non-small guests
  hw/s390x: Replace fprintf(stderr, "*\n" with qemu_log_mask()
  s390x/sclp: fix missing be conversion
  s390x/tcg: implement TEST PROTECTION
  s390x/sclp: fixup highest CPU address

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-23 13:10:24 +00:00
Kevin Wolf
8c0c5e636e Block patches
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 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'mreitz/tags/pull-block-2018-01-23' into queue-block

Block patches

# gpg: Signature made Tue Jan 23 12:35:11 2018 CET
# gpg:                using RSA key F407DB0061D5CF40
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>"
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1  1829 F407 DB00 61D5 CF40

* mreitz/tags/pull-block-2018-01-23: (25 commits)
  iotests: Disable some tests for compat=0.10
  iotests: Split 177 into two parts for compat=0.10
  iotests: Make 059 pass on machines with little RAM
  iotests: Filter compat-dependent info in 198
  iotests: Make 191 work with qcow2 options
  iotests: Make 184 image-less
  iotests: Make 089 compatible with compat=0.10
  iotests: Fix 067 for compat=0.10
  iotests: Fix 059's reference output
  iotests: Fix 051 for compat=0.10
  iotests: Fix 020 for vmdk
  iotests: Skip 103 for refcount_bits=1
  iotests: Forbid 020 for non-file protocols
  iotests: Drop format-specific in _filter_img_info
  iotests: Fix _img_info for backslashes
  block/vmdk: Add blkdebug events
  block/qcow: Add blkdebug events
  qcow2: No persistent dirty bitmaps for compat=0.10
  block/vmdk: Fix , instead of ; at end of line
  qemu-iotests: Fix locking issue in 102
  ...

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-01-23 12:40:46 +01:00
Max Reitz
94254c9b11 iotests: Disable some tests for compat=0.10
Tests 080, 130, 137, and 176 simply do not work with compat=0.10 for the
reasons stated there.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20171123020832.8165-10-mreitz@redhat.com>
[eblake: fix 177 in a separate commit]
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 20180117165420.15946-3-eblake@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2018-01-23 12:34:43 +01:00
Eric Blake
d6ac6e9363 iotests: Split 177 into two parts for compat=0.10
When originally written, test 177 explicitly took care to run
with compat=0.10.  Then I botched my own test in commit
81c219ac and f0a9c18f, by adding additional actions that require
v3 images.  Split out the new code into a new v3-only test, 204,
and revert 177 back to its original state other than a new comment.

Reported-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 20180117165420.15946-2-eblake@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2018-01-23 12:34:43 +01:00
Max Reitz
2291712c39 iotests: Make 059 pass on machines with little RAM
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171129192411.6637-1-mreitz@redhat.com
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2018-01-23 12:34:43 +01:00
Max Reitz
b01a1944e5 iotests: Filter compat-dependent info in 198
There is a bit of image-specific information which depends on the qcow2
compat level.  Filter it so that 198 works with compat=0.10 (and any
refcount_bits value).

Note that we cannot simply drop the --format-specific switch because we
do need the "encrypt" information.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171123020832.8165-18-mreitz@redhat.com
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2018-01-23 12:34:43 +01:00
Max Reitz
2483537ed9 iotests: Make 191 work with qcow2 options
In order for 191 to work with an explicit refcount_bits or compat=0.10,
we should strip format-specific information from the output--and we can
do so by using _filter_img_info.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171123020832.8165-17-mreitz@redhat.com
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2018-01-23 12:34:43 +01:00
Max Reitz
b5d92efa08 iotests: Make 184 image-less
184 does not need an image, so don't use one.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171123020832.8165-16-mreitz@redhat.com
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2018-01-23 12:34:43 +01:00
Max Reitz
9853f5c496 iotests: Make 089 compatible with compat=0.10
The only thing that is missing is a _filter_img_info after the
"$QEMU_IO -c info" invocations.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171123020832.8165-15-mreitz@redhat.com
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2018-01-23 12:34:43 +01:00
Max Reitz
e121034d14 iotests: Fix 067 for compat=0.10
067 works very well with compat=0.10 once you remove format-specific
information from the QMP output.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171123020832.8165-14-mreitz@redhat.com
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2018-01-23 12:34:43 +01:00
Max Reitz
76bf133c43 iotests: Fix 059's reference output
As of commit 9877860e7b, vmdk fails
differently when opening the sample image.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171123020832.8165-13-mreitz@redhat.com
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2018-01-23 12:34:43 +01:00