Commit Graph

61021 Commits

Author SHA1 Message Date
Joe Perches
4be6131e32 checkpatch: emit a warning on file add/move/delete
Whenever files are added, moved, or deleted, the MAINTAINERS file
patterns can be out of sync or outdated.

To try to keep MAINTAINERS more up-to-date, add a one-time warning
whenever a patch does any of those.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20180430124651.10340-5-stefanha@redhat.com
(cherry picked from commit 13f1937ef33950b1112049972249e6191b82e6c9)
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>

Conflicts:
  QEMU WARN() only takes one argument, drop the 'type' value in the
  first argument.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2018-05-10 10:41:16 +01:00
Joe Perches
5fc7e4047e checkpatch: ignore email headers better
There are some patches created by git format-patch that when scanned by
checkpatch report errors on lines like

To:	address.tld

This is a checkpatch false positive.

Improve the logic a bit to ignore folded email headers to avoid emitting
these messages.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20180430124651.10340-4-stefanha@redhat.com
(cherry picked from commit 29ee1b0c67e0dd7dea8dd718e8326076bce5b6fe)
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2018-05-10 10:41:16 +01:00
Pasi Savanainen
bf139a0614 checkpatch: check utf-8 content from a commit log when it's missing from charset
Check that a commit log doesn't contain UTF-8 when a mail header
explicitly defines a different charset, like

'Content-Type: text/plain; charset="us-ascii"'

Signed-off-by: Pasi Savanainen <pasi.savanainen@nixu.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Message-id: 20180430124651.10340-3-stefanha@redhat.com
Cc: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit fa64205df9dfd7b7662cc64a7e82115c00e428e5)
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2018-05-10 10:41:16 +01:00
Joe Perches
b37c4aacf7 checkpatch: add a --strict check for utf-8 in commit logs
Some find using utf-8 in commit logs inappropriate.

Some patch commit logs contain unintended utf-8 characters when doing
things like copy/pasting compilation output.

Look for the start of any commit log by skipping initial lines that look
like email headers and "From: " lines.

Stop looking for utf-8 at the first signature line.

Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Message-id: 20180430124651.10340-2-stefanha@redhat.com
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 15662b3e8644905032c2e26808401a487d4e90c1)
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Conflicts:
  QEMU does not have CHK(), use WARN() instead.

  QEMU WARN() only takes one argument, drop the 'type' value in the
  first argument.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2018-05-10 10:41:16 +01:00
Stefan Hajnoczi
23d702d898 blockjob: drop block_job_pause/resume_all()
Commit 8119334918 ("block: Don't
block_job_pause_all() in bdrv_drain_all()") removed the only callers of
block_job_pause/resume_all().

Pausing and resuming now happens in child_job_drained_begin/end() so
it's no longer necessary to globally pause/resume jobs.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-id: 20180424085240.5798-1-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2018-05-10 10:41:12 +01:00
Peter Maydell
a8a94ef726 RISC-V: QEMU 2.13 Minor Fixes
* Require libfdt when configuring for 'riscv*-softmmu'
 * Increase HTIF priority and allow zero base address
 -----BEGIN PGP SIGNATURE-----
 
 iF0EABECAB0WIQR8mZMOsXzYugc9Xvpr8dezV+8+TwUCWvLKRQAKCRBr8dezV+8+
 TyOrAKCBiArCoNOD0lIvSdgu8Dv7dKOUaQCeMfS/FkM9wSTOnZgOPKPEZ3xreLY=
 =wUet
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/riscv/tags/riscv-qemu-2.13-minor-fixes-3' into staging

RISC-V: QEMU 2.13 Minor Fixes

* Require libfdt when configuring for 'riscv*-softmmu'
* Increase HTIF priority and allow zero base address

# gpg: Signature made Wed 09 May 2018 11:15:33 BST
# gpg:                using DSA key 6BF1D7B357EF3E4F
# gpg: Good signature from "Michael Clark <michaeljclark@mac.com>"
# gpg:                 aka "Michael Clark <mjc@sifive.com>"
# gpg:                 aka "Michael Clark <michael@metaparadigm.com>"
# 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: 7C99 930E B17C D8BA 073D  5EFA 6BF1 D7B3 57EF 3E4F

* remotes/riscv/tags/riscv-qemu-2.13-minor-fixes-3:
  riscv: requires libfdt
  riscv: htif: increase the priority of the htif subregion
  riscv: spike: allow base == 0

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-05-10 10:25:15 +01:00
Emilio G. Cota
5b4f1d2db9 target/riscv: convert to TranslatorOps
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Michael Clark <mjc@sifive.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
0114db1c82 target/riscv: convert to DisasContextBase
Notes:

- Did not convert {num,max}_insns, since the corresponding code
  will go away in the next patch.

- ctx->pc becomes ctx->base.pc_next, and ctx->next_pc becomes
  ctx->pc_succ_insn.

While at it, convert the remaining tb->cflags readers to tb_cflags().

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Michael Clark <mjc@sifive.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
b2e32021e7 target/riscv: convert to DisasJumpType
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Michael Clark <mjc@sifive.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
a4fd3ec3c7 target/openrisc: convert to TranslatorOps
Notes:

- Changed the num_insns test in insn_start to check for
  dc->base.num_insns > 1, since when tb_start is first
  called in a TB, base.num_insns is already set to 1.

- Removed DISAS_NEXT from the switch in tb_stop; use
  DISAS_TOO_MANY instead.

- Added an assert_not_reached on tb_stop for DISAS_NEXT
  and the default case.

- Merged the two separate log_target_disas calls into the
  disas_log op.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Stafford Horne <shorne@gmail.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
1ffa4bced0 target/openrisc: convert to DisasContextBase
While at it, set is_jmp to DISAS_NORETURN when generating
an exception.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Stafford Horne <shorne@gmail.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
c88691aadd target/s390x: convert to TranslatorOps
Note: I looked into dropping dc->do_debug. However, I don't see
an easy way to do it given that TOO_MANY is also valid
when we just translate more than max_insns. Thus, the check
for do_debug in "case DISAS_PC_CC_UPDATED" would still need
additional state to know whether or not we came from
breakpoint_check.

Acked-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by:   David Hildenbrand <david@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: qemu-s390x@nongnu.org
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
eccf741ab8 target/s390x: convert to DisasContextBase
Notes:

- Did not convert {num,max}_insns and is_jmp, since the corresponding
  code will go away in the next patch.

- Avoided a checkpatch error in use_exit_tb.

- As suggested by David, (1) Drop ctx.pc and use
  ctx.base.pc_next instead, and (2) Rename ctx.next_pc to
  ctx.pc_tmp and add a comment about it.

Acked-by: Cornelia Huck <cohuck@redhat.com>
Suggested-by: David Hildenbrand <david@redhat.com>
Reviewed-by:  David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: qemu-s390x@nongnu.org
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
21a8eced9b target/s390x: convert to DisasJumpType
The only non-trivial modification is the use of DISAS_TOO_MANY
in the same way is used by the generic translation loop.

Acked-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: qemu-s390x@nongnu.org
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
18f440edfb target/mips: convert to TranslatorOps
Notes:

- DISAS_TOO_MANY replaces the former "break" in the translation loop.
  However, care must be taken not to overwrite a previous condition
  in is_jmp; that's why in translate_insn we first check is_jmp and
  return if it's != DISAS_NEXT.

- Added an assert in translate_insn, before exiting due to an exception,
  to make sure that is_jmp is set to DISAS_NORETURN (the exception
  generation function always sets it.)

- Added an assert for the default case in is_jmp's switch.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Yongbok Kim <yongbok.kim@mips.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
12be92588c target/mips: use *ctx for DisasContext
No changes to the logic here; this is just to make the diff
that follows easier to read.

While at it, remove the unnecessary 'struct' in
'struct TranslationBlock'.

Note that checkpatch complains with a false positive:
  ERROR: space prohibited after that '&' (ctx:WxW)
  #75: FILE: target/mips/translate.c:20220:
  +    ctx->kscrexist = (env->CP0_Config4 >> CP0C4_KScrExist) & 0xff;
                                                              ^
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Yongbok Kim <yongbok.kim@mips.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
eeb3bba847 target/mips: convert to DisasContextBase
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Yongbok Kim <yongbok.kim@mips.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
b28425babc target/mips: convert to DisasJumpType
Notes:

- BS_EXCP in generate_exception_err and after hen_helper_wait
  becomes DISAS_NORETURN, because we do not return after
  raising an exception.

- Some uses of BS_EXCP are misleading in that they're used
  only as a "not BS_STOP" exit condition, i.e. they have nothing
  to do with an actual exception. For those cases, define
  and use DISAS_EXIT, which is clearer. With this and the
  above change, BS_EXCP goes away completely.

- fix a comment typo (s/intetrupt/interrupt/).

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Yongbok Kim <yongbok.kim@mips.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
cd314a7d01 target/mips: use lookup_and_goto_ptr on BS_STOP
The TB after BS_STOP is not fixed (e.g. helper_mtc0_hwrena
changes hflags, which ends up changing the TB flags via
cpu_get_tb_cpu_state). This requires a full lookup (i.e.
with flags) via lookup_and_goto_ptr instead of gen_goto_tb,
since the latter only looks at the PC for in-page goto's. Fix it.

Reported-by: Richard Henderson <richard.henderson@linaro.org>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
6e61bc9410 target/sparc: convert to TranslatorOps
Notes:

- Moved the cross-page check from the end of translate_insn to
  init_disas_context.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Artyom Tarasenko <atar4qemu@gmail.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
af00be490b target/sparc: convert to DisasContextBase
Notes:

- pc and npc are left unmodified, since they can point to out-of-TB
  jump targets.

- Got rid of last_pc in gen_intermediate_code(), using base.pc_next
  instead. Only update pc_next (1) on a breakpoint (so that tb->size
  includes the insn), and (2) after reading the current instruction
  from memory. This allows us to use base.pc_next in the BP check,
  which is what the translator loop does.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Artyom Tarasenko <atar4qemu@gmail.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
c5e6ccdf6c target/sparc: convert to DisasJumpType
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Artyom Tarasenko <atar4qemu@gmail.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
fd1b3d3864 target/sh4: convert to TranslatorOps
This was fairly straightforward since it had already been converted
to DisasContextBase; just had to add TARGET_TOO_MANY to the switch
in tb_stop.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
b542683d77 translator: merge max_insns into DisasContextBase
While at it, use int for both num_insns and max_insns to make
sure we have same-type comparisons.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
6cd79443d3 target/mips: avoid integer overflow in next_page PC check
If the PC is in the last page of the address space, next_page_start
overflows to 0. Fix it.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Yongbok Kim <yongbok.kim@mips.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
071bd2b628 target/s390x: avoid integer overflow in next_page PC check
If the PC is in the last page of the address space, next_page_start
overflows to 0. Fix it.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: David Hildenbrand <david@redhat.com>
Cc: qemu-s390x@nongnu.org
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
bfe7ad5be7 target/arm: avoid integer overflow in next_page PC check
If the PC is in the last page of the address space, next_page_start
overflows to 0. Fix it.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
56371527f3 target/microblaze: avoid integer overflow in next_page PC check
If the PC is in the last page of the address space, next_page_start
overflows to 0. Fix it.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
5c433a7aac target/tilegx: avoid integer overflow in next_page PC check
If the PC is in the last page of the address space, next_page_start
overflows to 0. Fix it.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
818c187781 target/unicore32: avoid integer overflow in next_page PC check
If the PC is in the last page of the address space, next_page_start
overflows to 0. Fix it.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
4e8b44b6c2 target/xtensa: avoid integer overflow in next_page PC check
If the PC is in the last page of the address space, next_page_start
overflows to 0. Fix it.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
4302303d3c target/lm32: avoid integer overflow in next_page PC check
If the PC is in the last page of the address space, next_page_start
overflows to 0. Fix it.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Michael Walle <michael@walle.cc>
Cc: Michael Walle <michael@walle.cc>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
3ac5e413c0 target/cris: avoid integer overflow in next_page PC check
If the PC is in the last page of the address space, next_page_start
overflows to 0. Fix it.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Emilio G. Cota
33572269a5 target/riscv: avoid integer overflow in next_page PC check
If the PC is in the last page of the address space, next_page_start
overflows to 0. Fix it.

Reported-by: Richard Henderson <richard.henderson@linaro.org>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Michael Clark <mjc@sifive.com>
Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Michael Clark <mjc@sifive.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 10:12:21 -07:00
Richard Henderson
abebf92597 tcg: Limit the number of ops in a TB
In 6001f7729e we partially attempt to address the branch
displacement overflow caused by 15fa08f845.

However, gcc/testsuite/gcc.target/aarch64/advsimd-intrinsics/vqtbX.c
is a testcase that contains a TB so large as to overflow anyway.
The limit here of 8000 ops produces a maximum output TB size of
24112 bytes on a ppc64le host with that test case.  This is still
much less than the maximum forward branch distance of 32764 bytes.

Cc: qemu-stable@nongnu.org
Fixes: 15fa08f845 ("tcg: Dynamically allocate TCGOps")
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 08:30:57 -07:00
Peter Maydell
7eb30ef0ba tcg/i386: Fix dup_vec in non-AVX2 codepath
The VPUNPCKLD* instructions are all "non-destructive source",
indicated by "NDS" in the encoding string in the x86 ISA manual.
This means that they take two source operands, one of which is
encoded in the VEX.vvvv field. We were incorrectly treating them
as if they were destructive-source and passing 0 as the 'v'
argument of tcg_out_vex_modrm(). This meant we were always
using %xmm0 as one of the source operands, causing incorrect
results if the register allocator happened to want to use
something else. For instance the input AArch64 insn:
 DUP v26.16b, w21
which becomes TCG IR ops:
 dup_vec v128,e8,tmp2,x21
 st_vec v128,e8,tmp2,env,$0xa40
was assembled to:
0x607c568c:  c4 c1 7a 7e 86 e8 00 00  vmovq    0xe8(%r14), %xmm0
0x607c5694:  00
0x607c5695:  c5 f9 60 c8              vpunpcklbw %xmm0, %xmm0, %xmm1
0x607c5699:  c5 f9 61 c9              vpunpcklwd %xmm1, %xmm0, %xmm1
0x607c569d:  c5 f9 70 c9 00           vpshufd  $0, %xmm1, %xmm1
0x607c56a2:  c4 c1 7a 7f 8e 40 0a 00  vmovdqu  %xmm1, 0xa40(%r14)
0x607c56aa:  00

when the vpunpcklwd insn should be "%xmm1, %xmm1, %xmm1".
This resulted in our incorrectly setting the output vector to
q26=0000320000003200:0000320000003200
when given an input of x21 == 0000000002803200
rather than the expected all-zeroes.

Pass the correct source register number to tcg_out_vex_modrm()
for these insns.

Fixes: 770c2fc7bb
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180504153431.5169-1-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09 08:30:57 -07:00
KONRAD Frederic
a666409f0d
riscv: requires libfdt
When compiling on a machine without libfdt installed the configure script
should try to get libfdt from the git or should die because otherwise
CONFIG_LIBFDT is not set and the build process end in an error in the link
phase.. eg:

hw/riscv/virt.o: In function `riscv_virt_board_init':
qemu/src/hw/riscv/virt.c:317: undefined reference to `qemu_fdt_setprop_cell'
qemu/src/hw/riscv/virt.c:319: undefined reference to `qemu_fdt_setprop_cell'
qemu/src/hw/riscv/virt.c:345: undefined reference to `qemu_fdt_dumpdtb'
collect2: error: ld returned 1 exit status
make[1]: *** [qemu-system-riscv64] Error 1
make: *** [subdir-riscv64-softmmu] Error 2

Cc: qemu-stable@nongnu.org
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Michael Clark <mjc@sifive.com>
Signed-off-by: KONRAD Frederic <frederic.konrad@adacore.com>
Signed-off-by: Michael Clark <mjc@sifive.com>

Message-Id: <1525360636-18229-4-git-send-email-frederic.konrad@adacore.com>
2018-05-09 22:14:28 +12:00
Daniel P. Berrangé
45b47130f4 qemu-doc: provide details of supported build platforms
Describe the policy the project uses to decide which OS are supported as
build platforms. This will:

  - Allow maintainers to determine when the minimum version of a 3rd
    party piece of software can be increased without negatively
    impacting supported platforms.

  - Allow tailoring of CI environments to match the intended supported
    build platforms.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20180504160026.14017-2-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-05-09 00:13:40 +02:00
Thomas Huth
d8ab6cb798 qemu-options: Remove deprecated -no-kvm-irqchip
We've never documented this option in our qemu-doc, so apart from the users
that already used the old qemu-kvm fork before, most users should not be
aware of this option at all. It's been marked as deprecated in the source
code for a long time already, and officially marked as deprecated in the
documentation since QEMU v2.10, so it should be fine to remove this now.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1525453270-23074-5-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-09 00:13:40 +02:00
Thomas Huth
ec910caba9 qemu-options: Remove deprecated -no-kvm-pit-reinjection
Deprecated since the beginning when it was added for compatibility with
the ancient qemu-kvm fork of QEMU, and it even printed out the deprecation
warning since right from the start (i.e. QEMU v1.3.0), so it's really time
to remove this now.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1525453270-23074-4-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-09 00:13:40 +02:00
Thomas Huth
1217d6ca2b qemu-options: Bail out on unsupported options instead of silently ignoring them
The dangling remainder of the -tdf option revealed a deficiency in our
option parsing: Options that have been declared, but are not supported
in the switch-case statement in vl.c and not handled in the OS-specifc
os_parse_cmd_args() functions are currently silently ignored. We should
rather tell the users that they specified something that we can not
handle, so let's print an error message and exit instead.

Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1525453270-23074-3-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-09 00:13:39 +02:00
Thomas Huth
281b95231d qemu-options: Remove remainders of the -tdf option
The -tdf options has been removed with d07aa197c5,
but apparently I forgot to remove the corresponding two lines from
qemu-options.hx, so this option is still "available" and just silently
ignored. Kill it now for good.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1525453270-23074-2-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-09 00:13:39 +02:00
Thomas Huth
454012997e qemu-options: Mark -virtioconsole as deprecated
The qemu-doc already states that this option is only maintained for
backward compatibility and "-device virtconsole" should be used
instead. So let's take the next step and mark this option officially
as deprecated.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1525446790-16139-1-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-09 00:13:39 +02:00
Paolo Bonzini
bf3175b499 target/i386: sev: fix memory leaks
Reported by Coverity.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-09 00:13:39 +02:00
Daniel P. Berrangé
950c4e6c94 opts: don't silently truncate long option values
The existing QemuOpts parsing code uses a fixed size 1024 byte buffer
for storing the option values. If a value exceeded this size it was
silently truncated and no error reported to the user. Long option values
is not a common scenario, but it is conceivable that they will happen.
eg if the user has a very deeply nested filesystem it would be possible
to come up with a disk path that was > 1024 bytes. Most of the time if
such data was silently truncated, the user would get an error about
opening a non-existant disk. If they're unlucky though, QEMU might use a
completely different disk image from another VM, which could be
considered a security issue. Another example program was in using the
-smbios command line arg with very large data blobs. In this case the
silent truncation will be providing semantically incorrect data to the
guest OS for SMBIOS tables.

If the operating system didn't limit the user's argv when spawning QEMU,
the code should honour whatever length arguments were given without
imposing its own length restrictions. This patch thus changes the code
to use a heap allocated buffer for storing the values during parsing,
lifting the arbitrary length restriction.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20180416111743.8473-4-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-05-09 00:13:39 +02:00
Daniel P. Berrangé
e652714f98 opts: don't silently truncate long parameter keys
The existing QemuOpts parsing code uses a fixed size 128 byte buffer
for storing the parameter keys. If a key exceeded this size it was
silently truncate and no error reported to the user. This behaviour was
reasonable & harmless because traditionally the key names are all
statically declared, and it was known that no code was declaring a key
longer than 127 bytes. This assumption, however, ceased to be valid once
the block layer added support for dot-separate compound keys. This
syntax allows for keys that can be arbitrarily long, limited only by the
number of block drivers you can stack up. With this usage, silently
truncating the key name can never lead to correct behaviour.

Hopefully such truncation would turn into an error, when the block code
then tried to extract options later, but there's no guarantee that will
happen. It is conceivable that an option specified by the user may be
truncated and then ignored. This could have serious consequences,
possibly even leading to security problems if the ignored option set a
security relevant parameter.

If the operating system didn't limit the user's argv when spawning QEMU,
the code should honour whatever length arguments were given without
imposing its own length restrictions. This patch thus changes the code
to use a heap allocated buffer for storing the keys during parsing,
lifting the arbitrary length restriction.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20180416111743.8473-3-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-05-09 00:13:39 +02:00
Daniel P. Berrangé
20efc49ed6 accel: use g_strsplit for parsing accelerator names
Instead of re-using the get_opt_name() method from QemuOpts to split a
string on ':', just use g_strsplit().

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20180416111743.8473-2-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-05-09 00:13:38 +02:00
Roman Kagan
7afcfd32a6 update-linux-headers: drop hyperv.h
As of mainline linux commit 5a485803221777013944cbd1a7cd5c62efba3ffa
"x86/hyper-v: move hyperv.h out of uapi" by Vitaly Kuznetsov, no linux
uapi header includes it, so we no longer need to create a stub for it.

Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180413143354.17614-1-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-09 00:13:38 +02:00
Peter Xu
d820fa5b62 qemu-thread: always keep the posix wrapper layer
We will conditionally have a wrapper layer depending on whether the host
has the PTHREAD_SETNAME capability.  It complicates stuff.  Let's keep
the wrapper there; we opt out the pthread_setname_np() call only.

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180412053444.17801-1-peterx@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-09 00:13:38 +02:00
Paolo Bonzini
48564041a7 exec: reintroduce MemoryRegion caching
MemoryRegionCache was reverted to "normal" address_space_* operations
for 2.9, due to lack of support for IOMMUs.  Reinstate the
optimizations, caching only the IOMMU translation at address_cache_init
but not the IOMMU lookup and target AddressSpace translation are not
cached; now that MemoryRegionCache supports IOMMUs, it becomes more widely
applicable too.

The inlined fast path is defined in memory_ldst_cached.inc.h, while the
slow path uses memory_ldst.inc.c as before.  The smaller fast path causes
a little code size reduction in MemoryRegionCache users:

    hw/virtio/virtio.o text size before: 32373
    hw/virtio/virtio.o text size after: 31941

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-09 00:13:38 +02:00