> On Feb 2, 2019, at 09:17, Andy Lutomirski wrote:
>
> On Fri, Feb 1, 2019 at 12:55 PM Chang S. Bae wrote:
>>
>> +
>> +/*
>> + * CPU/node NR is loaded from the limit (size) field of a special segment
>> + * descriptor entry in GDT.
>> + */
>> +.macro LOAD_CPU_AND_NODE_SEG_LIMIT reg:req
>> +
On Fri, Feb 1, 2019 at 12:55 PM Chang S. Bae wrote:
>
> GSBASE is used to find per-CPU data in the kernel. But when it is unknown,
> the per-CPU base can be found from the per_cpu_offset table with a CPU NR.
> The CPU NR is extracted from the limit field of the CPUNODE entry in GDT,
> or by the RD
GSBASE is used to find per-CPU data in the kernel. But when it is unknown,
the per-CPU base can be found from the per_cpu_offset table with a CPU NR.
The CPU NR is extracted from the limit field of the CPUNODE entry in GDT,
or by the RDPID instruction.
Also, add the GAS-compatible RDPID macro.
Th
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