The patch titled
i386-pda: Store the interrupt regs pointer in the PDA
has been added to the -mm tree. Its filename is
i386-pda-implement-current-with-the-pda-fix.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: i386-pda: Store the interrupt regs pointer in the PDA
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Signed-off-by: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/asm-i386/irq_regs.h | 28 +++++++++++++++++++++++++++-
include/asm-i386/pda.h | 1 +
2 files changed, 28 insertions(+), 1 deletion(-)
diff -puN include/asm-i386/irq_regs.h~i386-pda-implement-current-with-the-pda-fix include/asm-i386/irq_regs.h
--- a/include/asm-i386/irq_regs.h~i386-pda-implement-current-with-the-pda-fix
+++ a/include/asm-i386/irq_regs.h
@@ -1 +1,27 @@
-#include <asm-generic/irq_regs.h>
+/*
+ * Per-cpu current frame pointer - the location of the last exception frame on
+ * the stack, stored in the PDA.
+ *
+ * Jeremy Fitzhardinge <jeremy@xxxxxxxx>
+ */
+#ifndef _ASM_I386_IRQ_REGS_H
+#define _ASM_I386_IRQ_REGS_H
+
+#include <asm/pda.h>
+
+static inline struct pt_regs *get_irq_regs(void)
+{
+ return read_pda(irq_regs);
+}
+
+static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
+{
+ struct pt_regs *old_regs;
+
+ old_regs = read_pda(irq_regs);
+ write_pda(irq_regs, new_regs);
+
+ return old_regs;
+}
+
+#endif /* _ASM_I386_IRQ_REGS_H */
diff -puN include/asm-i386/pda.h~i386-pda-implement-current-with-the-pda-fix include/asm-i386/pda.h
--- a/include/asm-i386/pda.h~i386-pda-implement-current-with-the-pda-fix
+++ a/include/asm-i386/pda.h
@@ -14,6 +14,7 @@ struct i386_pda
int cpu_number;
struct task_struct *pcurrent; /* current process */
+ struct pt_regs *irq_regs;
};
extern struct i386_pda *_cpu_pda[];
_
Patches currently in -mm which might be from jeremy@xxxxxxxx are
i386-use-asm-offsets-for-the-offsets-of-registers-into-the-pt_regs-struct-rather-than-having-hard-coded-constants.patch
i386-pda-basic-definitions-for-i386-pda.patch
i386-pda-initialize-the-per-cpu-data-area.patch
i386-pda-initialize-the-per-cpu-data-area-voyager-fix.patch
i386-pda-use-%gs-as-the-pda-base-segment-in-the-kernel.patch
i386-pda-fix-places-where-using-%gs-changes-the-usermode-abi.patch
i386-pda-update-sys_vm86-to-cope-with-changed-pt_regs-and-%gs-usage.patch
i386-pda-implement-smp_processor_id-with-the-pda.patch
i386-pda-implement-current-with-the-pda.patch
i386-pda-implement-current-with-the-pda-fix.patch
fix-fake-return-address.patch
generic-bug-implementation.patch
generic-bug-for-i386.patch
generic-bug-for-x86-64.patch
uml-add-generic-bug-support.patch
use-generic-bug-for-ppc.patch
bug-test-1.patch
time-uninline-jiffiesh-fix.patch
-
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