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powerpc/mm/64s: Use PPC_SLBFEE macro

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Old toolchains don't know about slbfee and break the build, eg:
  {standard input}:37: Error: Unrecognized opcode: `slbfee.'

Fix it by using the macro version. We need to add an underscore
version that takes raw register numbers from the inline asm, rather
than our Rx macros.

Fixes: e15a4fea4d ("powerpc/64s/hash: Add some SLB debugging tests")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2018-11-06 19:25:18 +11:00
parent 0ae790683f
commit 08e6a3434e
2 changed files with 4 additions and 1 deletions
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2
arch/powerpc/include/asm/ppc-opcode.h
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@ -493,6 +493,8 @@
__PPC_RS(t) | __PPC_RA0(a) | __PPC_RB(b))
#define PPC_SLBFEE_DOT(t, b) stringify_in_c(.long PPC_INST_SLBFEE | \
__PPC_RT(t) | __PPC_RB(b))
#define __PPC_SLBFEE_DOT(t, b) stringify_in_c(.long PPC_INST_SLBFEE | \
___PPC_RT(t) | ___PPC_RB(b))
#define PPC_ICBT(c,a,b) stringify_in_c(.long PPC_INST_ICBT | \
__PPC_CT(c) | __PPC_RA0(a) | __PPC_RB(b))
/* PASemi instructions */

3
arch/powerpc/mm/slb.c
View File

@ -19,6 +19,7 @@
#include <asm/mmu.h>
#include <asm/mmu_context.h>
#include <asm/paca.h>
#include <asm/ppc-opcode.h>
#include <asm/cputable.h>
#include <asm/cacheflush.h>
#include <asm/smp.h>
@ -65,7 +66,7 @@ static void assert_slb_presence(bool present, unsigned long ea)
WARN_ON_ONCE(mfmsr() & MSR_EE);
asm volatile("slbfee. %0, %1" : "=r"(tmp) : "r"(ea) : "cr0");
asm volatile(__PPC_SLBFEE_DOT(%0, %1) : "=r"(tmp) : "r"(ea) : "cr0");
WARN_ON(present == (tmp == 0));
#endif