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ppc queue :

Browse source 
* debug facility improvements
 * timebase and decrementer fixes
 * record-replay fixes
 * TCG fixes
 * XIVE model improvements for multichip
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Merge tag 'pull-ppc-20230906' of https://github.com/legoater/qemu into staging

ppc queue :

* debug facility improvements
* timebase and decrementer fixes
* record-replay fixes
* TCG fixes
* XIVE model improvements for multichip

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* tag 'pull-ppc-20230906' of https://github.com/legoater/qemu: (35 commits)
  ppc/xive: Add support for the PC MMIOs
  ppc/xive: Handle END triggers between chips with MMIOs
  ppc/xive: Introduce a new XiveRouter end_notify() handler
  ppc/xive: Use address_space routines to access the machine RAM
  target/ppc: Fix the order of kvm_enable judgment about kvmppc_set_interrupt()
  hw/ppc/e500: fix broken snapshot replay
  target/ppc: Flush inputs to zero with NJ in ppc_store_vscr
  target/ppc: Fix LQ, STQ register-pair order for big-endian
  tests/avocado: ppc64 reverse debugging tests for pseries and powernv
  tests/avocado: reverse-debugging cope with re-executing breakpoints
  tests/avocado: boot ppc64 pseries replay-record test to Linux VFS mount
  spapr: Fix record-replay machine reset consuming too many events
  spapr: Fix machine reset deadlock from replay-record
  target/ppc: Fix timebase reset with record-replay
  target/ppc: Fix CPU reservation migration for record-replay
  hw/ppc: Read time only once to perform decrementer write
  hw/ppc: Reset timebase facilities on machine reset
  target/ppc: Migrate DECR SPR
  hw/ppc: Always store the decrementer value
  target/ppc: Sign-extend large decrementer to 64-bits
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2023-09-07 10:23:24 -04:00
commit 269e60635a
34 changed files with 925 additions and 205 deletions
Download patch file Download diff file Expand all files Collapse all files

3
tests/avocado/replay_kernel.py
View file

@ -255,8 +255,7 @@ class ReplayKernelNormal(ReplayKernelBase):
kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
kernel_command_line = self.KERNEL_COMMON_COMMAND_LINE + 'console=hvc0'
# icount is not good enough for PPC64 for complete boot yet
console_pattern = 'Kernel command line: %s' % kernel_command_line
console_pattern = 'VFS: Cannot open root device'
self.run_rr(kernel_path, kernel_command_line, console_pattern)
def test_ppc64_powernv(self):

54
tests/avocado/reverse_debugging.py
View file

@ -150,16 +150,33 @@ class ReverseDebugging(LinuxKernelTest):
self.check_pc(g, addr)
logger.info('found position %x' % addr)
logger.info('seeking to the end (icount %s)' % (last_icount - 1))
vm.qmp('replay-break', icount=last_icount - 1)
# continue - will return after pausing
g.cmd(b'c', b'T02thread:01;')
# visit the recorded instruction in forward order
logger.info('stepping forward')
for addr in steps:
self.check_pc(g, addr)
self.gdb_step(g)
logger.info('found position %x' % addr)
# set breakpoints for the instructions just stepped over
logger.info('setting breakpoints')
for addr in steps:
# hardware breakpoint at addr with len=1
g.cmd(b'Z1,%x,1' % addr, b'OK')
# this may hit a breakpoint if first instructions are executed
# again
logger.info('continuing execution')
vm.qmp('replay-break', icount=last_icount - 1)
# continue - will return after pausing
# This could stop at the end and get a T02 return, or by
# re-executing one of the breakpoints and get a T05 return.
g.cmd(b'c')
if self.vm_get_icount(vm) == last_icount - 1:
logger.info('reached the end (icount %s)' % (last_icount - 1))
else:
logger.info('hit a breakpoint again at %x (icount %s)' %
(self.get_pc(g), self.vm_get_icount(vm)))
logger.info('running reverse continue to reach %x' % steps[-1])
# reverse continue - will return after stopping at the breakpoint
g.cmd(b'bc', b'T05thread:01;')
@ -216,3 +233,32 @@ class ReverseDebugging_AArch64(ReverseDebugging):
self.reverse_debugging(
args=('-kernel', kernel_path))
class ReverseDebugging_ppc64(ReverseDebugging):
"""
:avocado: tags=accel:tcg
"""
REG_PC = 0x40
# unidentified gitlab timeout problem
@skipIf(os.getenv('GITLAB_CI'), 'Running on GitLab')
def test_ppc64_pseries(self):
"""
:avocado: tags=arch:ppc64
:avocado: tags=machine:pseries
"""
# SLOF branches back to its entry point, which causes this test
# to take the 'hit a breakpoint again' path. That's not a problem,
# just slightly different than the other machines.
self.endian_is_le = False
self.reverse_debugging()
@skipIf(os.getenv('GITLAB_CI'), 'Running on GitLab')
def test_ppc64_powernv(self):
"""
:avocado: tags=arch:ppc64
:avocado: tags=machine:powernv
"""
self.endian_is_le = False
self.reverse_debugging()