From: Mark Rutland <mark.rutland@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: ardb@kernel.org, broonie@kernel.org, catalin.marinas@arm.com,
james.morse@arm.com, madvenka@linux.microsoft.com,
mark.rutland@arm.com, maz@kernel.org, suzuki.poulose@arm.com,
will@kernel.org
Subject: [PATCH 2/6] arm64: assembler: add set_this_cpu_offset
Date: Thu, 20 May 2021 12:50:27 +0100 [thread overview]
Message-ID: <20210520115031.18509-3-mark.rutland@arm.com> (raw)
In-Reply-To: <20210520115031.18509-1-mark.rutland@arm.com>
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Suzuki Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
---
arch/arm64/include/asm/assembler.h | 18 +++++++++++++-----
arch/arm64/mm/proc.S | 12 ++----------
2 files changed, 15 insertions(+), 15 deletions(-)
diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h
index 8418c1bd8f04..f0188903557f 100644
--- a/arch/arm64/include/asm/assembler.h
+++ b/arch/arm64/include/asm/assembler.h
@@ -232,17 +232,25 @@ lr .req x30 // link register
* @dst: destination register
*/
#if defined(__KVM_NVHE_HYPERVISOR__) || defined(__KVM_VHE_HYPERVISOR__)
- .macro this_cpu_offset, dst
+ .macro get_this_cpu_offset, dst
mrs \dst, tpidr_el2
.endm
#else
- .macro this_cpu_offset, dst
+ .macro get_this_cpu_offset, dst
alternative_if_not ARM64_HAS_VIRT_HOST_EXTN
mrs \dst, tpidr_el1
alternative_else
mrs \dst, tpidr_el2
alternative_endif
.endm
+
+ .macro set_this_cpu_offset, src
+alternative_if_not ARM64_HAS_VIRT_HOST_EXTN
+ msr tpidr_el1, \src
+alternative_else
+ msr tpidr_el2, \src
+alternative_endif
+ .endm
#endif
/*
@@ -253,7 +261,7 @@ alternative_endif
.macro adr_this_cpu, dst, sym, tmp
adrp \tmp, \sym
add \dst, \tmp, #:lo12:\sym
- this_cpu_offset \tmp
+ get_this_cpu_offset \tmp
add \dst, \dst, \tmp
.endm
@@ -264,7 +272,7 @@ alternative_endif
*/
.macro ldr_this_cpu dst, sym, tmp
adr_l \dst, \sym
- this_cpu_offset \tmp
+ get_this_cpu_offset \tmp
ldr \dst, [\dst, \tmp]
.endm
@@ -745,7 +753,7 @@ USER(\label, ic ivau, \tmp2) // invalidate I line PoU
cbz \tmp, \lbl
#endif
adr_l \tmp, irq_stat + IRQ_CPUSTAT_SOFTIRQ_PENDING
- this_cpu_offset \tmp2
+ get_this_cpu_offset \tmp2
ldr w\tmp, [\tmp, \tmp2]
cbnz w\tmp, \lbl // yield on pending softirq in task context
.Lnoyield_\@:
diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S
index 0a48191534ff..bb64ca6544a7 100644
--- a/arch/arm64/mm/proc.S
+++ b/arch/arm64/mm/proc.S
@@ -83,11 +83,7 @@ SYM_FUNC_START(cpu_do_suspend)
mrs x9, mdscr_el1
mrs x10, oslsr_el1
mrs x11, sctlr_el1
-alternative_if_not ARM64_HAS_VIRT_HOST_EXTN
- mrs x12, tpidr_el1
-alternative_else
- mrs x12, tpidr_el2
-alternative_endif
+ get_this_cpu_offset x12
mrs x13, sp_el0
stp x2, x3, [x0]
stp x4, x5, [x0, #16]
@@ -145,11 +141,7 @@ SYM_FUNC_START(cpu_do_resume)
msr mdscr_el1, x10
msr sctlr_el1, x12
-alternative_if_not ARM64_HAS_VIRT_HOST_EXTN
- msr tpidr_el1, x13
-alternative_else
- msr tpidr_el2, x13
-alternative_endif
+ set_this_cpu_offset x13
msr sp_el0, x14
/*
* Restore oslsr_el1 by writing oslar_el1
--
2.11.0
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next prev parent reply other threads:[~2021-05-20 11:53 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-20 11:50 [PATCH 0/6] arm64: boot cleanups Mark Rutland
2021-05-20 11:50 ` [PATCH 1/6] arm64: Implement stack trace termination record Mark Rutland
2021-05-20 11:50 ` Mark Rutland [this message]
2021-05-20 11:50 ` [PATCH 3/6] arm64: smp: remove pointless secondary_data maintenance Mark Rutland
2021-05-20 11:50 ` [PATCH 4/6] arm64: smp: remove stack from secondary_data Mark Rutland
2021-05-20 11:50 ` [PATCH 5/6] arm64: smp: unify task and sp setup Mark Rutland
2021-05-20 11:50 ` [PATCH 6/6] arm64: smp: initialize cpu offset earlier Mark Rutland
2021-05-20 14:46 ` [PATCH 0/6] arm64: boot cleanups Ard Biesheuvel
2021-05-26 22:16 ` Will Deacon
2021-05-27 9:33 ` Mark Rutland
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