From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 5/6] ARM: virt: use PSR_N_BIT for detecting boot CPU mode mismatch
Date: Fri, 11 Jan 2013 15:34:16 +0000 [thread overview]
Message-ID: <1357918457-20469-6-git-send-email-will.deacon@arm.com> (raw)
In-Reply-To: <1357918457-20469-1-git-send-email-will.deacon@arm.com>
During boot, we detect whether or not all CPUs are brought up in the
same mode and signal this to the kernel using the N bit in the SPSR.
This patch tidies up the checking code to use the PSR_N_BIT macro,
rather than hardcoding the bit field and commenting it as such.
Signed-off-by: Will Deacon <will.deacon@arm.com>
---
arch/arm/include/asm/virt.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/include/asm/virt.h b/arch/arm/include/asm/virt.h
index 86164df..50af92b 100644
--- a/arch/arm/include/asm/virt.h
+++ b/arch/arm/include/asm/virt.h
@@ -24,9 +24,9 @@
/*
* Flag indicating that the kernel was not entered in the same mode on every
* CPU. The zImage loader stashes this value in an SPSR, so we need an
- * architecturally defined flag bit here (the N flag, as it happens)
+ * architecturally defined flag bit here.
*/
-#define BOOT_CPU_MODE_MISMATCH (1<<31)
+#define BOOT_CPU_MODE_MISMATCH PSR_N_BIT
#ifndef __ASSEMBLY__
--
1.8.0
next prev parent reply other threads:[~2013-01-11 15:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-11 15:34 [PATCH 0/6] Random collection of hyp-boot fixes and updates Will Deacon
2013-01-11 15:34 ` [PATCH 1/6] ARM: virt: Avoid bx instruction for compatibility with <=ARMv4 Will Deacon
2013-01-11 15:34 ` [PATCH 2/6] ARM: virt: boot secondary CPUs through the right entry point Will Deacon
2013-01-11 15:34 ` [PATCH 3/6] ARM: virt: simplify __hyp_stub_install epilog Will Deacon
2013-01-11 15:34 ` [PATCH 4/6] ARM: virt: avoid clobbering lr when forcing svc mode Will Deacon
2013-01-11 15:34 ` Will Deacon [this message]
2013-01-11 15:34 ` [PATCH 6/6] ARM: virt: hide CONFIG_ARM_VIRT_EXT from user Will Deacon
2013-01-11 15:42 ` Christopher Covington
2013-01-11 16:43 ` Will Deacon
2013-01-11 17:22 ` Christopher Covington
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