From: Michael Ellerman <mpe@ellerman.id.au>
To: linuxppc-dev@ozlabs.org
Cc: npiggin@gmail.com
Subject: [PATCH 2/3] powerpc/mm/64s: Use PPC_SLBFEE macro
Date: Tue, 6 Nov 2018 23:37:08 +1100 [thread overview]
Message-ID: <20181106123709.940-2-mpe@ellerman.id.au> (raw)
In-Reply-To: <20181106123709.940-1-mpe@ellerman.id.au>
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: e15a4fea4dee ("powerpc/64s/hash: Add some SLB debugging tests")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
arch/powerpc/include/asm/ppc-opcode.h | 2 ++
arch/powerpc/mm/slb.c | 3 ++-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
index 6093bc8f74e5..a6e9e314c707 100644
--- a/arch/powerpc/include/asm/ppc-opcode.h
+++ b/arch/powerpc/include/asm/ppc-opcode.h
@@ -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 */
diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c
index f3e002ee457b..457fd29448b1 100644
--- a/arch/powerpc/mm/slb.c
+++ b/arch/powerpc/mm/slb.c
@@ -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
--
2.17.2
next prev parent reply other threads:[~2018-11-06 12:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-06 12:37 [PATCH 1/3] powerpc/mm/64s: Consolidate SLB assertions Michael Ellerman
2018-11-06 12:37 ` Michael Ellerman [this message]
2018-11-06 12:37 ` [PATCH 3/3] powerpc/mm/64s: Only use slbfee on CPUs that support it Michael Ellerman
2018-11-07 0:20 ` Nicholas Piggin
2018-11-07 21:27 ` [1/3] powerpc/mm/64s: Consolidate SLB assertions Michael Ellerman
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