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  1. 12 6月, 2016 10 次提交
  3. 10 6月, 2016 6 次提交
  5. 09 6月, 2016 9 次提交
    • P
      target-i386: Move user-mode exception actions out of user-exec.c · 0c33682d
      由 Peter Maydell 提交于 
      The exception_action() function in user-exec.c is just a call to
cpu_loop_exit() for every target CPU except i386.  Since this
function is only called if the target's handle_mmu_fault() hook has
indicated an MMU fault, and that hook is only called from the
handle_cpu_signal() code path, we can simply move the x86-specific
setup into that hook, which allows us to remove the TARGET_I386
ifdef from user-exec.c.

Of the actions that were done by the call to raise_interrupt_err():
 * cpu_svm_check_intercept_param() is a no-op in user mode
 * check_exception() is a no-op since double faults are impossible
   for user-mode
 * assignments to cs->exception_index and env->error_code are no-ops
 * assigning to env->exception_next_eip is unnecessary because it
   is not used unless env->exception_is_int is true
 * cpu_loop_exit_restore() is equivalent to cpu_loop_exit() since
   pc is 0
which leaves just setting env_>exception_is_int as the action that
needs to be added to x86_cpu_handle_mmu_fault().
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NSergey Fedorov <sergey.fedorov@linaro.org>
Acked-by: NEduardo Habkost <ehabkost@redhat.com>
Acked-by: NRiku Voipio <riku.voipio@linaro.org>
Message-id: 1463494687-25947-7-git-send-email-peter.maydell@linaro.org
      0c33682d
    • P
      target-i386: Add comment about do_interrupt_user() next_eip argument · 33271823
      由 Peter Maydell 提交于 
      Add a comment to do_interrupt_user() along the same lines as the
existing one for do_interrupt_all() noting that the next_eip
argument is not used unless is_int is true or intno is EXCP_SYSCALL.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NSergey Fedorov <sergey.fedorov@linaro.org>
Acked-by: NEduardo Habkost <ehabkost@redhat.com>
Acked-by: NRiku Voipio <riku.voipio@linaro.org>
Message-id: 1463494687-25947-6-git-send-email-peter.maydell@linaro.org
      33271823
    • P
      user-exec: Don't reextract sigmask from usercontext pointer · a5852dc5
      由 Peter Maydell 提交于 
      Extracting the old signal mask from the usercontext pointer passed to
a signal handler is a pain because it is OS and CPU dependent.
Since we've already done it once and passed it to handle_cpu_signal(),
there's no need to do it again in cpu_exit_tb_from_sighandler().
This then means we don't need to pass a usercontext pointer in to
handle_cpu_signal() at all.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NSergey Fedorov <sergey.fedorov@linaro.org>
Acked-by: NEduardo Habkost <ehabkost@redhat.com>
Acked-by: NRiku Voipio <riku.voipio@linaro.org>
Message-id: 1463494687-25947-5-git-send-email-peter.maydell@linaro.org
      a5852dc5
    • P
      cpu-exec: Rename cpu_resume_from_signal() to cpu_loop_exit_noexc() · 6886b980
      由 Peter Maydell 提交于 
      The function cpu_resume_from_signal() is now always called with a
NULL puc argument, and is rather misnamed since it is never called
from a signal handler. It is essentially forcing an exit to the
top level cpu loop but without raising any exception, so rename
it to cpu_loop_exit_noexc() and drop the useless unused argument.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NSergey Fedorov <sergey.fedorov@linaro.org>
Acked-by: NEduardo Habkost <ehabkost@redhat.com>
Acked-by: NRiku Voipio <riku.voipio@linaro.org>
Message-id: 1463494687-25947-4-git-send-email-peter.maydell@linaro.org
      6886b980
    • P
      user-exec: Push resume-from-signal code out to handle_cpu_signal() · f213e72f
      由 Peter Maydell 提交于 
      Since the only caller of page_unprotect() which might cause it to
need to call cpu_resume_from_signal() is handle_cpu_signal() in
the user-mode code, push the longjump handling out to that function.

Since this is the only caller of cpu_resume_from_signal() which
passes a non-NULL puc argument, split the non-NULL handling into
a new cpu_exit_tb_from_sighandler() function. This allows us
to merge the softmmu and usermode implementations of the
cpu_resume_from_signal() function, which are now identical.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NSergey Fedorov <sergey.fedorov@linaro.org>
Acked-by: NEduardo Habkost <ehabkost@redhat.com>
Acked-by: NRiku Voipio <riku.voipio@linaro.org>
Message-id: 1463494687-25947-3-git-send-email-peter.maydell@linaro.org
      f213e72f
    • P
      translate-all.c: Don't pass puc, locked to tb_invalidate_phys_page() · 75809229
      由 Peter Maydell 提交于 
      The user-mode-only function tb_invalidate_phys_page() is only
called from two places:
 * page_unprotect(), which passes in a non-zero pc, a puc pointer
   and the value 'true' for the locked argument
 * page_set_flags(), which passes in a zero pc, a NULL puc pointer
   and a 'false' locked argument

If the pc is non-zero then we may call cpu_resume_from_signal(),
which does a longjmp out of the calling code (and out of the
signal handler); this is to cover the case of a target CPU with
"precise self-modifying code" (currently only x86) executing
a store instruction which modifies code in the same TB as the
store itself. Rather than doing the longjump directly here,
return a flag to the caller which indicates whether the current
TB was modified, and move the longjump to page_unprotect.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NSergey Fedorov <sergey.fedorov@linaro.org>
Acked-by: NEduardo Habkost <ehabkost@redhat.com>
Acked-by: NRiku Voipio <riku.voipio@linaro.org>
Message-id: 1463494687-25947-2-git-send-email-peter.maydell@linaro.org
      75809229
    • X
      hw/arm: virt uart fix · 9bbbf649
      由 xiaoqiang zhao 提交于 
      commit f0d1d2c1
("hw/char: QOM'ify pl011 model") break qemu-system-arm virt machine
if option '-machine secure=on' is provided.

The function create_uart is called twice. So make CharDriverState pointer
a parameter to create_uart instead of hardcoded.
Signed-off-by: Nxiaoqiang zhao <zxq_yx_007@163.com>
Tested-by: NJerome Forissier <jerome.forissier@linaro.org>
Message-id: 1465353045-26323-1-git-send-email-zxq_yx_007@163.com
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
      9bbbf649
    • P
      Merge remote-tracking branch 'remotes/riku/tags/pull-linux-user-20160608' into staging · b66e10e4
      由 Peter Maydell 提交于 
      linux-user pull request for June 2016

# gpg: Signature made Wed 08 Jun 2016 14:27:14 BST
# gpg:                using RSA key 0xB44890DEDE3C9BC0
# gpg: Good signature from "Riku Voipio <riku.voipio@iki.fi>"
# gpg:                 aka "Riku Voipio <riku.voipio@linaro.org>"

* remotes/riku/tags/pull-linux-user-20160608: (44 commits)
  linux-user: In fork_end(), remove correct CPUs from CPU list
  linux-user: Special-case ERESTARTSYS in target_strerror()
  linux-user: Make target_strerror() return 'const char *'
  linux-user: Correct signedness of target_flock l_start and l_len fields
  linux-user: Use safe_syscall wrapper for ioctl
  linux-user: Use safe_syscall wrapper for accept and accept4 syscalls
  linux-user: Use safe_syscall wrapper for semop
  linux-user: Use safe_syscall wrapper for epoll_wait syscalls
  linux-user: Use safe_syscall wrapper for poll and ppoll syscalls
  linux-user: Use safe_syscall wrapper for sleep syscalls
  linux-user: Use safe_syscall wrapper for rt_sigtimedwait syscall
  linux-user: Use safe_syscall wrapper for flock
  linux-user: Use safe_syscall wrapper for mq_timedsend and mq_timedreceive
  linux-user: Use safe_syscall wrapper for msgsnd and msgrcv
  linux-user: Use safe_syscall wrapper for send* and recv* syscalls
  linux-user: Use safe_syscall wrapper for connect syscall
  linux-user: Use safe_syscall wrapper for readv and writev syscalls
  linux-user: Fix error conversion in 64-bit fadvise syscall
  linux-user: Fix NR_fadvise64 and NR_fadvise64_64 for 32-bit guests
  linux-user: Fix handling of arm_fadvise64_64 syscall
  ...
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Conflicts:
	configure
	scripts/qemu-binfmt-conf.sh
      b66e10e4
    • P
      Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging · 6f50f25c
      由 Peter Maydell 提交于 
      Block layer patches

# gpg: Signature made Wed 08 Jun 2016 09:31:38 BST
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"

* remotes/kevin/tags/for-upstream: (31 commits)
  qemu-img bench: Add --flush-interval
  qemu-img bench: Implement -S (step size)
  qemu-img bench: Make start offset configurable
  qemu-img bench: Sequential writes
  qemu-img bench
  block: Don't emulate natively supported pwritev flags
  blockdev: clean up error handling in do_open_tray
  block: Fix bdrv_all_delete_snapshot() error handling
  qcow2: avoid extra flushes in qcow2
  raw-posix: Fetch max sectors for host block device
  block: assert that bs->request_alignment is a power of 2
  migration/block: Convert saving to BlockBackend
  migration/block: Convert load to BlockBackend
  block: Kill bdrv_co_write_zeroes()
  vmdk: Convert to bdrv_co_pwrite_zeroes()
  raw_bsd: Convert to bdrv_co_pwrite_zeroes()
  raw-posix: Convert to bdrv_co_pwrite_zeroes()
  qed: Convert to bdrv_co_pwrite_zeroes()
  gluster: Convert to bdrv_co_pwrite_zeroes()
  blkreplay: Convert to bdrv_co_pwrite_zeroes()
  ...
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
      6f50f25c
  7. 08 6月, 2016 15 次提交