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authorJames Morse <james.morse@arm.com>2017-11-02 15:12:34 +0300
committerWill Deacon <will.deacon@arm.com>2017-11-02 18:55:40 +0300
commit0fbeb318754860b37150fd42c2058d636a431426 (patch)
treef2031ebae16d0c649f59b4e0b3400824c35ce68a /arch/arm64/kernel/hibernate.c
parentc10f0d06ad2652913acd21a630f4c2a97cebbfbd (diff)
downloadlinux-0fbeb318754860b37150fd42c2058d636a431426.tar.xz
arm64: explicitly mask all exceptions
There are a few places where we want to mask all exceptions. Today we do this in a piecemeal fashion, typically we expect the caller to have masked irqs and the arch code masks debug exceptions, ignoring serror which is probably masked. Make it clear that 'mask all exceptions' is the intention by adding helpers to do exactly that. This will let us unmask SError without having to add 'oh and SError' to these paths. Signed-off-by: James Morse <james.morse@arm.com> Reviewed-by: Julien Thierry <julien.thierry@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/hibernate.c')
-rw-r--r--arch/arm64/kernel/hibernate.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/arm64/kernel/hibernate.c b/arch/arm64/kernel/hibernate.c
index 095d3c170f5d..3009b8b80f08 100644
--- a/arch/arm64/kernel/hibernate.c
+++ b/arch/arm64/kernel/hibernate.c
@@ -27,6 +27,7 @@
#include <asm/barrier.h>
#include <asm/cacheflush.h>
#include <asm/cputype.h>
+#include <asm/daifflags.h>
#include <asm/irqflags.h>
#include <asm/kexec.h>
#include <asm/memory.h>
@@ -285,7 +286,7 @@ int swsusp_arch_suspend(void)
return -EBUSY;
}
- local_dbg_save(flags);
+ flags = local_daif_save();
if (__cpu_suspend_enter(&state)) {
/* make the crash dump kernel image visible/saveable */
@@ -315,7 +316,7 @@ int swsusp_arch_suspend(void)
__cpu_suspend_exit();
}
- local_dbg_restore(flags);
+ local_daif_restore(flags);
return ret;
}