On 14/07/16 15:53, Alex Bennée wrote:
> Sergey Fedorov <[email protected]> writes:
>
>> From: Sergey Fedorov <[email protected]>
>>
>> These functions will be used to make translation block invalidation safe
>> with concurrent lockless lookup in the global hash table.
>>
>> Most targets don't use 'cs_base'; so marking TB as invalid is as simple
>> as assigning -1 to 'cs_base'. SPARC target stores the next program
>> counter into 'cs_base', and -1 is a fine invalid value since PC must bet
>> a multiple of 4 in SPARC. The only odd target is i386, for which a
>> special flag is introduced in place of removed 'HF_SOFTMMU_MASK'.
>>
>> Suggested-by: Paolo Bonzini <[email protected]>
>> Signed-off-by: Sergey Fedorov <[email protected]>
>> Signed-off-by: Sergey Fedorov <[email protected]>
>> ---
>> include/exec/exec-all.h | 10 ++++++++++
>> target-alpha/cpu.h | 14 ++++++++++++++
>> target-arm/cpu.h | 14 ++++++++++++++
>> target-cris/cpu.h | 14 ++++++++++++++
>> target-i386/cpu.h | 17 +++++++++++++++++
>> target-lm32/cpu.h | 14 ++++++++++++++
>> target-m68k/cpu.h | 14 ++++++++++++++
>> target-microblaze/cpu.h | 14 ++++++++++++++
>> target-mips/cpu.h | 14 ++++++++++++++
>> target-moxie/cpu.h | 14 ++++++++++++++
>> target-openrisc/cpu.h | 14 ++++++++++++++
>> target-ppc/cpu.h | 14 ++++++++++++++
>> target-s390x/cpu.h | 14 ++++++++++++++
>> target-sh4/cpu.h | 14 ++++++++++++++
>> target-sparc/cpu.h | 14 ++++++++++++++
>> target-sparc/translate.c | 1 +
>> target-tilegx/cpu.h | 14 ++++++++++++++
>> target-tricore/cpu.h | 14 ++++++++++++++
>> target-unicore32/cpu.h | 14 ++++++++++++++
>> target-xtensa/cpu.h | 14 ++++++++++++++
>> 20 files changed, 266 insertions(+)
>>
>> diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
>> index db79ab65cebe..61cc3a1fb8f7 100644
>> --- a/include/exec/exec-all.h
>> +++ b/include/exec/exec-all.h
>> @@ -256,6 +256,16 @@ void tb_free(TranslationBlock *tb);
>> void tb_flush(CPUState *cpu);
>> void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr);
>>
>> +static inline void tb_mark_invalid(TranslationBlock *tb)
>> +{
>> + cpu_get_invalid_tb_cpu_state(&tb->pc, &tb->cs_base, &tb->flags);
> Hmmm are we getting something here? Maybe cpu_tb_invalidate_cpu_state?
Just to be similar to cpu_get_tb_cpu_state().
>
>> +}
>> +
>> +static inline bool tb_is_invalid(TranslationBlock *tb)
>> +{
>> + return cpu_tb_cpu_state_is_invalidated(tb->pc, tb->cs_base, tb->flags);
>> +}
> Also why are we passing three pointers to parts of TranslationBlock? Why
> not just pass tb directly and be done with it?
I'm not sure we want to include exec/exec-all.h in target-*/cpu.h
>
> I'm sure the compiler does something sensible but seems overly verbose
> to me.
>
>> +
>> #if defined(USE_DIRECT_JUMP)
>>
>> #if defined(CONFIG_TCG_INTERPRETER)
(snip)
> Otherwise:
>
> Reviewed-by: Alex Bennée <[email protected]>
Kind regards,
Sergey
