On 08/03/18 16:06, Jan Beulich wrote:
>>>> On 02.03.18 at 09:14, <jgr...@suse.com> wrote:
>> @@ -123,22 +142,14 @@ unsigned int flush_area_local(const void *va, unsigned
>> int flags)
>> u32 t = pre_flush();
>>
>> if ( !cpu_has_invpcid )
>> - {
>> - unsigned long cr4 = read_cr4();
>> -
>> - write_cr4(cr4 & ~X86_CR4_PGE);
>> - barrier();
>> - write_cr4(cr4);
>> - }
>> + do_flush_tlb(0);
>> else
>> - {
>> /*
>> * Using invpcid to flush all mappings works
>> * regardless of whether PCID is enabled or not.
>> * It is faster than read-modify-write CR4.
>> */
>> invpcid_flush_all();
>> - }
>
> Btw, this is correct for FLUSH_TLB_GLOBAL, but goes too far for
> FLUSH_TLB.
You are aware that my patches didn't change anything in this regard?
Juergen
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