From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
segher@kernel.crashing.org
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] powerpc/32: replace LOAD_MSR_KERNEL() by LOAD_REG_IMMEDIATE()
Date: Tue, 13 Aug 2019 09:59:37 +0000 (UTC) [thread overview]
Message-ID: <db961e057f67865896c2c153475f8f32119e1492.1565690241.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <61d2a0b6f0c89b1ee546851ce9b6bd345e5ec968.1565690241.git.christophe.leroy@c-s.fr>
LOAD_MSR_KERNEL() and LOAD_REG_IMMEDIATE() are doing the same thing
in the same way. Drop LOAD_MSR_KERNEL()
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
arch/powerpc/kernel/entry_32.S | 18 +++++++++---------
arch/powerpc/kernel/head_32.h | 21 ++++-----------------
2 files changed, 13 insertions(+), 26 deletions(-)
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 54fab22c9a43..972b05504a0a 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -230,7 +230,7 @@ transfer_to_handler_cont:
*/
lis r12,reenable_mmu@h
ori r12,r12,reenable_mmu@l
- LOAD_MSR_KERNEL(r0, MSR_KERNEL)
+ LOAD_REG_IMMEDIATE(r0, MSR_KERNEL)
mtspr SPRN_SRR0,r12
mtspr SPRN_SRR1,r0
SYNC
@@ -304,7 +304,7 @@ stack_ovf:
addi r1,r1,THREAD_SIZE-STACK_FRAME_OVERHEAD
lis r9,StackOverflow@ha
addi r9,r9,StackOverflow@l
- LOAD_MSR_KERNEL(r10,MSR_KERNEL)
+ LOAD_REG_IMMEDIATE(r10,MSR_KERNEL)
#if defined(CONFIG_PPC_8xx) && defined(CONFIG_PERF_EVENTS)
mtspr SPRN_NRI, r0
#endif
@@ -324,7 +324,7 @@ trace_syscall_entry_irq_off:
bl trace_hardirqs_on
/* Now enable for real */
- LOAD_MSR_KERNEL(r10, MSR_KERNEL | MSR_EE)
+ LOAD_REG_IMMEDIATE(r10, MSR_KERNEL | MSR_EE)
mtmsr r10
REST_GPR(0, r1)
@@ -394,7 +394,7 @@ ret_from_syscall:
#endif
mr r6,r3
/* disable interrupts so current_thread_info()->flags can't change */
- LOAD_MSR_KERNEL(r10,MSR_KERNEL) /* doesn't include MSR_EE */
+ LOAD_REG_IMMEDIATE(r10,MSR_KERNEL) /* doesn't include MSR_EE */
/* Note: We don't bother telling lockdep about it */
SYNC
MTMSRD(r10)
@@ -824,7 +824,7 @@ ret_from_except:
* can't change between when we test it and when we return
* from the interrupt. */
/* Note: We don't bother telling lockdep about it */
- LOAD_MSR_KERNEL(r10,MSR_KERNEL)
+ LOAD_REG_IMMEDIATE(r10,MSR_KERNEL)
SYNC /* Some chip revs have problems here... */
MTMSRD(r10) /* disable interrupts */
@@ -991,7 +991,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_NEED_PAIRED_STWCX)
* can restart the exception exit path at the label
* exc_exit_restart below. -- paulus
*/
- LOAD_MSR_KERNEL(r10,MSR_KERNEL & ~MSR_RI)
+ LOAD_REG_IMMEDIATE(r10,MSR_KERNEL & ~MSR_RI)
SYNC
MTMSRD(r10) /* clear the RI bit */
.globl exc_exit_restart
@@ -1066,7 +1066,7 @@ exc_exit_restart_end:
REST_NVGPRS(r1); \
lwz r3,_MSR(r1); \
andi. r3,r3,MSR_PR; \
- LOAD_MSR_KERNEL(r10,MSR_KERNEL); \
+ LOAD_REG_IMMEDIATE(r10,MSR_KERNEL); \
bne user_exc_return; \
lwz r0,GPR0(r1); \
lwz r2,GPR2(r1); \
@@ -1236,7 +1236,7 @@ recheck:
* neither. Those disable/enable cycles used to peek at
* TI_FLAGS aren't advertised.
*/
- LOAD_MSR_KERNEL(r10,MSR_KERNEL)
+ LOAD_REG_IMMEDIATE(r10,MSR_KERNEL)
SYNC
MTMSRD(r10) /* disable interrupts */
lwz r9,TI_FLAGS(r2)
@@ -1329,7 +1329,7 @@ _GLOBAL(enter_rtas)
lwz r4,RTASBASE(r4)
mfmsr r9
stw r9,8(r1)
- LOAD_MSR_KERNEL(r0,MSR_KERNEL)
+ LOAD_REG_IMMEDIATE(r0,MSR_KERNEL)
SYNC /* disable interrupts so SRR0/1 */
MTMSRD(r0) /* don't get trashed */
li r9,MSR_KERNEL & ~(MSR_IR|MSR_DR)
diff --git a/arch/powerpc/kernel/head_32.h b/arch/powerpc/kernel/head_32.h
index 4a692553651f..8abc7783dbe5 100644
--- a/arch/powerpc/kernel/head_32.h
+++ b/arch/powerpc/kernel/head_32.h
@@ -5,19 +5,6 @@
#include <asm/ptrace.h> /* for STACK_FRAME_REGS_MARKER */
/*
- * MSR_KERNEL is > 0x8000 on 4xx/Book-E since it include MSR_CE.
- */
-.macro __LOAD_MSR_KERNEL r, x
-.if \x >= 0x8000
- lis \r, (\x)@h
- ori \r, \r, (\x)@l
-.else
- li \r, (\x)
-.endif
-.endm
-#define LOAD_MSR_KERNEL(r, x) __LOAD_MSR_KERNEL r, x
-
-/*
* Exception entry code. This code runs with address translation
* turned off, i.e. using physical addresses.
* We assume sprg3 has the physical address of the current
@@ -92,7 +79,7 @@
#ifdef CONFIG_40x
rlwinm r9,r9,0,14,12 /* clear MSR_WE (necessary?) */
#else
- LOAD_MSR_KERNEL(r10, MSR_KERNEL & ~(MSR_IR|MSR_DR)) /* can take exceptions */
+ LOAD_REG_IMMEDIATE(r10, MSR_KERNEL & ~(MSR_IR|MSR_DR)) /* can take exceptions */
MTMSRD(r10) /* (except for mach check in rtas) */
#endif
lis r10,STACK_FRAME_REGS_MARKER@ha /* exception frame marker */
@@ -140,10 +127,10 @@
* otherwise we might risk taking an interrupt before we tell lockdep
* they are enabled.
*/
- LOAD_MSR_KERNEL(r10, MSR_KERNEL)
+ LOAD_REG_IMMEDIATE(r10, MSR_KERNEL)
rlwimi r10, r9, 0, MSR_EE
#else
- LOAD_MSR_KERNEL(r10, MSR_KERNEL | MSR_EE)
+ LOAD_REG_IMMEDIATE(r10, MSR_KERNEL | MSR_EE)
#endif
#if defined(CONFIG_PPC_8xx) && defined(CONFIG_PERF_EVENTS)
mtspr SPRN_NRI, r0
@@ -187,7 +174,7 @@
#define EXC_XFER_TEMPLATE(hdlr, trap, msr, tfer, ret) \
li r10,trap; \
stw r10,_TRAP(r11); \
- LOAD_MSR_KERNEL(r10, msr); \
+ LOAD_REG_IMMEDIATE(r10, msr); \
bl tfer; \
.long hdlr; \
.long ret
--
2.13.3
next prev parent reply other threads:[~2019-08-13 10:04 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-13 9:59 [PATCH 1/2] powerpc: rewrite LOAD_REG_IMMEDIATE() as an intelligent macro Christophe Leroy
2019-08-13 9:59 ` Christophe Leroy [this message]
2019-08-14 2:08 ` Paul Mackerras
2019-08-14 9:46 ` Christophe Leroy
2019-08-14 20:10 ` Segher Boessenkool
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=db961e057f67865896c2c153475f8f32119e1492.1565690241.git.christophe.leroy@c-s.fr \
--to=christophe.leroy@c-s.fr \
--cc=benh@kernel.crashing.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mpe@ellerman.id.au \
--cc=paulus@samba.org \
--cc=segher@kernel.crashing.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).