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| author | Eduardo Habkost <ehabkost@redhat.com> | 2015-10-08 17:10:27 -0300 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2015-10-23 12:59:27 -0200 |
| commit | 9055330ffbf5ca85f024c29874799d9c8bd17aa9 (patch) | |
| tree | 822b261193f7a3242e8c6845ced0ef8abde918aa /target-i386 | |
| parent | 36eb6e096729f9aade3a6af7dbe4d0a990335d7e (diff) | |
| download | qemu-9055330ffbf5ca85f024c29874799d9c8bd17aa9.zip qemu-9055330ffbf5ca85f024c29874799d9c8bd17aa9.tar.gz qemu-9055330ffbf5ca85f024c29874799d9c8bd17aa9.tar.bz2 | |
target-i386: Ensure bit 10 on DR7 is never cleared
Bit 10 of DR7 is documented as always set to 1, so ensure that's
always the case.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/bpt_helper.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/target-i386/bpt_helper.c b/target-i386/bpt_helper.c index 23ce828..49472ea 100644 --- a/target-i386/bpt_helper.c +++ b/target-i386/bpt_helper.c @@ -85,6 +85,8 @@ void cpu_x86_update_dr7(CPUX86State *env, uint32_t new_dr7) target_ulong old_dr7 = env->dr[7]; int i; + new_dr7 |= DR7_FIXED_1; + /* If nothing is changing except the global/local enable bits, then we can make the change more efficient. */ if (((old_dr7 ^ new_dr7) & ~0xff) == 0) { |