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exec: add cpu_synchronize_state to cpu_memory_rw_debug 

I sometimes got "Cannot access memory" when using the x command
on the monitor. Turns out that the cpu env did contain stale data
(e.g. wrong control register content for page table origin).
We must synchronize the state of the CPU before walking the page
tables. A similar issues happens for a remote gdb, so lets
do the cpu_synchronize_state in cpu_memory_rw_debug.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <1488896348-13560-1-git-send-email-borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Christian Borntraeger 2017-03-07 15:19:08 +01:00 committed by Paolo Bonzini
parent 1e356fc14b
commit 79ca7a1b89
1 changed files with 2 additions and 0 deletions
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exec.c
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@ -43,6 +43,7 @@
#include "exec/ioport.h"
#include "sysemu/dma.h"
#include "sysemu/numa.h"
#include "sysemu/hw_accel.h"
#include "exec/address-spaces.h"
#include "sysemu/xen-mapcache.h"
#include "trace-root.h"
@ -3309,6 +3310,7 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr,
hwaddr phys_addr;
target_ulong page;
cpu_synchronize_state(cpu);
while (len > 0) {
int asidx;
MemTxAttrs attrs;