Skip to content

Q
qemu

openeuler / qemu

通知 10
Star 0
Fork 0
Q
qemu

体验新版 GitCode，发现更多精彩内容 >>

切换分支/标签
  1. 04 10月, 2011 1 次提交
  3. 16 9月, 2011 2 次提交
  5. 10 9月, 2011 1 次提交
    • B
      kvm: remove unnecessary assignments · 6115c0a8
      由 Blue Swirl 提交于 
      Avoid these warnings from clang analyzer:
/src/qemu/target-i386/kvm.c:772:5: warning: Value stored to 'cwd' is never read
    cwd = swd = twd = 0;
/src/qemu/target-i386/kvm.c:772:11: warning: Although the value stored to 'swd' is used in the enclosing expression, the value is never actually read from 'swd'
    cwd = swd = twd = 0;
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
      6115c0a8
  7. 03 9月, 2011 1 次提交
    • S
      Use new macro QEMU_PACKED for packed structures · 541dc0d4
      由 Stefan Weil 提交于 
      Most changes were made using these commands:

git grep -la '__attribute__((packed))'|xargs perl -pi -e 's/__attribute__\(\(packed\)\)/QEMU_PACKED/'
git grep -la '__attribute__ ((packed))'|xargs perl -pi -e 's/__attribute__ \(\(packed\)\)/QEMU_PACKED/'
git grep -la '__attribute__((__packed__))'|xargs perl -pi -e 's/__attribute__\(\(__packed__\)\)/QEMU_PACKED/'
git grep -la '__attribute__ ((__packed__))'|xargs perl -pi -e 's/__attribute__ \(\(__packed__\)\)/QEMU_PACKED/'
git grep -la '__attribute((packed))'|xargs perl -pi -e 's/__attribute\(\(packed\)\)/QEMU_PACKED/'

Whitespace in linux-user/syscall_defs.h was fixed manually
to avoid warnings from scripts/checkpatch.pl.

Manual changes were also applied to hw/pc.c.

I did not fix indentation with tabs in block/vvfat.c.
The patch will show 4 errors with scripts/checkpatch.pl.
Signed-off-by: NStefan Weil <weil@mail.berlios.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
      541dc0d4
  9. 25 8月, 2011 1 次提交
  11. 21 8月, 2011 1 次提交
  13. 05 8月, 2011 2 次提交
  15. 21 6月, 2011 4 次提交
  17. 19 6月, 2011 1 次提交
    • J
      kvm: x86: Save/restore FPU OP, IP and DP · 42cc8fa6
      由 Jan Kiszka 提交于 
      These FPU states are properly maintained by KVM but not yet by TCG. So
far we unconditionally set them to 0 in the guest which may cause
state corruptions, though not with modern guests.

To avoid breaking backward migration, use a conditional subsection that
is only written if any of the three fields is non-zero. The guest's
FNINIT clears them frequently, and cleared IA32_MISC_ENABLE MSR[2]
reduces the probability of non-zero values further so that this
subsection is not expected to restrict migration in any common scenario.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>
      42cc8fa6
  19. 14 6月, 2011 1 次提交
  21. 01 6月, 2011 1 次提交
  23. 02 5月, 2011 2 次提交
  25. 17 3月, 2011 5 次提交
  27. 15 3月, 2011 7 次提交
    • H
      KVM, MCE, unpoison memory address across reboot · 3c85e74f
      由 Huang Ying 提交于 
      In Linux kernel HWPoison processing implementation, the virtual
address in processes mapping the error physical memory page is marked
as HWPoison.  So that, the further accessing to the virtual
address will kill corresponding processes with SIGBUS.

If the error physical memory page is used by a KVM guest, the SIGBUS
will be sent to QEMU, and QEMU will simulate a MCE to report that
memory error to the guest OS.  If the guest OS can not recover from
the error (for example, the page is accessed by kernel code), guest OS
will reboot the system.  But because the underlying host virtual
address backing the guest physical memory is still poisoned, if the
guest system accesses the corresponding guest physical memory even
after rebooting, the SIGBUS will still be sent to QEMU and MCE will be
simulated.  That is, guest system can not recover via rebooting.

In fact, across rebooting, the contents of guest physical memory page
need not to be kept.  We can allocate a new host physical page to
back the corresponding guest physical address.

This patch fixes this issue in QEMU-KVM via calling qemu_ram_remap()
to clear the corresponding page table entry, so that make it possible
to allocate a new page to recover the issue.

[ Jan: rebasing and tiny cleanups]
Signed-off-by: NHuang Ying <ying.huang@intel.com>
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
      3c85e74f
    • J
      kvm: x86: Fail kvm_arch_init_vcpu if MCE initialization fails · 75d49497
      由 Jan Kiszka 提交于 
      There is no reason to continue if the kernel claims to support MCE but
then fails to process our request.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
CC: Huang Ying <ying.huang@intel.com>
CC: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
CC: Jin Dongming <jin.dongming@np.css.fujitsu.com>
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
      75d49497
    • J
      kvm: x86: Clean up kvm_setup_mce · 32a42024
      由 Jan Kiszka 提交于 
      There is nothing to abstract here. Fold kvm_setup_mce into its caller
and fix up the error reporting (return code of kvm_vcpu_ioctl holds the
error value).
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
CC: Huang Ying <ying.huang@intel.com>
CC: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
CC: Jin Dongming <jin.dongming@np.css.fujitsu.com>
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
      32a42024
    • J
      kvm: x86: Consolidate TCG and KVM MCE injection code · c34d440a
      由 Jan Kiszka 提交于 
      This switches KVM's MCE injection path to cpu_x86_inject_mce, both for
SIGBUS and monitor initiated events. This means we prepare the MCA MSRs
in the VCPUState also for KVM.

We have to drop the MSRs writeback restrictions for this purpose which
is now safe as every uncoordinated MSR injection is removed with this
patch.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
CC: Huang Ying <ying.huang@intel.com>
CC: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
CC: Jin Dongming <jin.dongming@np.css.fujitsu.com>
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
      c34d440a
    • J
      kvm: x86: Inject pending MCE events on state writeback · ab443475
      由 Jan Kiszka 提交于 
      The current way of injecting MCE events without updating of and
synchronizing with the CPUState is broken and causes spurious
corruptions of the MCE-related parts of the CPUState.

As a first step towards a fix, enhance the state writeback code with
support for injecting events that are pending in the CPUState. A pending
exception will then be signaled via cpu_interrupt(CPU_INTERRUPT_MCE).
And, just like for TCG, we need to leave the halt state when
CPU_INTERRUPT_MCE is pending (left broken for the to-be-removed old KVM
code).

This will also allow to unify TCG and KVM injection code.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
CC: Huang Ying <ying.huang@intel.com>
CC: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
CC: Jin Dongming <jin.dongming@np.css.fujitsu.com>
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
      ab443475
    • J
      kvm: Rename kvm_arch_process_irqchip_events to async_events · 99036865
      由 Jan Kiszka 提交于 
      We will broaden the scope of this function on x86 beyond irqchip events.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
      99036865
    • J
      kvm: x86: Move MCE functions together · 419fb20a
      由 Jan Kiszka 提交于 
      Pure function suffling to avoid multiple #ifdef KVM_CAP_MCE sections,
no functional changes. While at it, annotate some #ifdef sections.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
CC: Huang Ying <ying.huang@intel.com>
CC: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
CC: Jin Dongming <jin.dongming@np.css.fujitsu.com>
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
      419fb20a
  29. 13 3月, 2011 1 次提交
  31. 14 2月, 2011 7 次提交
  33. 23 1月, 2011 2 次提交