Re: [PATCH 2/2] KVM: MIPS/Emulate: Properly implement TLBR for T&E

[Ralf Baechle <ralf@linux-mips.org>]

On Tue, Mar 14, 2017 at 05:00:08PM +0000, James Hogan wrote:

> Properly implement emulation of the TLBR instruction for Trap & Emulate.
> This instruction reads the TLB entry pointed at by the CP0_Index
> register into the other TLB registers, which may have the side effect of
> changing the current ASID. Therefore abstract the CP0_EntryHi and ASID
> changing code into a common function in the process.
> 
> A comment indicated that Linux doesn't use TLBR, which is true during
> normal use, however dumping of the TLB does use it (for example with the
> relatively recent 'x' magic sysrq key), as does a wired TLB entries test
> case in my KVM tests.

Acked-by: Ralf Baechle <ralf@linux-mips.org>

  Ralf