From: wei.guo.simon@gmail.com
To: linuxppc-dev@lists.ozlabs.org
Cc: Paul Mackerras <paulus@ozlabs.org>,
kvm@vger.kernel.org, kvm-ppc@vger.kernel.org,
Simon Guo <wei.guo.simon@gmail.com>
Subject: [PATCH v2 03/30] powerpc: export tm_enable()/tm_disable/tm_abort() APIs
Date: Wed, 28 Feb 2018 01:37:10 +0800 [thread overview]
Message-ID: <1519753057-11059-4-git-send-email-wei.guo.simon@gmail.com> (raw)
In-Reply-To: <1519753057-11059-1-git-send-email-wei.guo.simon@gmail.com>
From: Simon Guo <wei.guo.simon@gmail.com>
This patch exports tm_enable()/tm_disable/tm_abort() APIs, which
will be used for PR KVM transaction memory logic.
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Reviewed-by: Paul Mackerras <paulus@ozlabs.org>
---
arch/powerpc/include/asm/asm-prototypes.h | 3 +++
arch/powerpc/include/asm/tm.h | 2 --
arch/powerpc/kernel/tm.S | 12 ++++++++++++
arch/powerpc/mm/hash_utils_64.c | 1 +
4 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/asm-prototypes.h b/arch/powerpc/include/asm/asm-prototypes.h
index 7330150..002abfc 100644
--- a/arch/powerpc/include/asm/asm-prototypes.h
+++ b/arch/powerpc/include/asm/asm-prototypes.h
@@ -126,4 +126,7 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4,
void _mcount(void);
unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip);
+void tm_enable(void);
+void tm_disable(void);
+void tm_abort(uint8_t cause);
#endif /* _ASM_POWERPC_ASM_PROTOTYPES_H */
diff --git a/arch/powerpc/include/asm/tm.h b/arch/powerpc/include/asm/tm.h
index b1658c9..e94f6db 100644
--- a/arch/powerpc/include/asm/tm.h
+++ b/arch/powerpc/include/asm/tm.h
@@ -10,12 +10,10 @@
#ifndef __ASSEMBLY__
-extern void tm_enable(void);
extern void tm_reclaim(struct thread_struct *thread,
uint8_t cause);
extern void tm_reclaim_current(uint8_t cause);
extern void tm_recheckpoint(struct thread_struct *thread);
-extern void tm_abort(uint8_t cause);
extern void tm_save_sprs(struct thread_struct *thread);
extern void tm_restore_sprs(struct thread_struct *thread);
diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S
index b92ac8e..ff12f47 100644
--- a/arch/powerpc/kernel/tm.S
+++ b/arch/powerpc/kernel/tm.S
@@ -12,6 +12,7 @@
#include <asm/ptrace.h>
#include <asm/reg.h>
#include <asm/bug.h>
+#include <asm/export.h>
#ifdef CONFIG_VSX
/* See fpu.S, this is borrowed from there */
@@ -55,6 +56,16 @@ _GLOBAL(tm_enable)
or r4, r4, r3
mtmsrd r4
1: blr
+EXPORT_SYMBOL_GPL(tm_enable);
+
+_GLOBAL(tm_disable)
+ mfmsr r4
+ li r3, MSR_TM >> 32
+ sldi r3, r3, 32
+ andc r4, r4, r3
+ mtmsrd r4
+ blr
+EXPORT_SYMBOL_GPL(tm_disable);
_GLOBAL(tm_save_sprs)
mfspr r0, SPRN_TFHAR
@@ -78,6 +89,7 @@ _GLOBAL(tm_restore_sprs)
_GLOBAL(tm_abort)
TABORT(R3)
blr
+EXPORT_SYMBOL_GPL(tm_abort);
/* void tm_reclaim(struct thread_struct *thread,
* uint8_t cause)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 655a5a9..d354de6 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -63,6 +63,7 @@
#include <asm/trace.h>
#include <asm/ps3.h>
#include <asm/pte-walk.h>
+#include <asm/asm-prototypes.h>
#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
--
1.8.3.1
next prev parent reply other threads:[~2018-02-27 17:38 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-27 17:37 [PATCH v2 00/30] KVM: PPC: Book3S PR: Transaction memory support on PR KVM wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 01/30] powerpc: export symbol msr_check_and_set() wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 02/30] powerpc: add TEXASR related macros wei.guo.simon
2018-02-27 17:37 ` wei.guo.simon [this message]
2018-02-27 17:37 ` [PATCH v2 04/30] KVM: PPC: Book3S PR: Move kvmppc_save_tm/kvmppc_restore_tm to separate file wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 05/30] KVM: PPC: Book3S PR: add new parameter (guest MSR) for kvmppc_save_tm()/kvmppc_restore_tm() wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 06/30] KVM: PPC: Book3S PR: turn on FP/VSX/VMX MSR bits in kvmppc_save_tm() wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 07/30] KVM: PPC: Book3S PR: add C function wrapper for _kvmppc_save/restore_tm() wei.guo.simon
2018-05-15 6:05 ` Paul Mackerras
2018-05-15 12:41 ` Simon Guo
2018-02-27 17:37 ` [PATCH v2 08/30] KVM: PPC: Book3S PR: In PR KVM suspends Transactional state when inject an interrupt wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 09/30] KVM: PPC: Book3S PR: PR KVM pass through MSR TM/TS bits to shadow_msr wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 10/30] KVM: PPC: Book3S PR: Sync TM bits to shadow msr for problem state guest wei.guo.simon
2018-05-15 6:01 ` [PATCH v2 00/30] KVM: PPC: Book3S PR: Transaction memory support on PR KVM Paul Mackerras
2018-05-15 11:44 ` Simon Guo
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