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[POWERPC] Fix CPU hotplug when using the SLB shadow buffer

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Before we register the SLB shadow buffer, we need to invalidate the
entries in the buffer, otherwise we can end up stale entries from when
we previously offlined the CPU.

This does this invalidate as well as unregistering the buffer with
PHYP before we offline the cpu.  Tested and fixes crashes seen on
970MP (thanks to tonyb) and POWER5.

Signed-off-by: Michael Neuling <[email protected]>
Signed-off-by: Paul Mackerras <[email protected]>
This commit is contained in:
Michael Neuling 2008-01-11 14:02:47 +11:00 • committed by Paul Mackerras
commit 473980a993
4 changed files with 12 additions and 0 deletions
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1
include/asm-powerpc/mmu-hash64.h
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@ -286,6 +286,7 @@ extern void hpte_init_iSeries(void);
extern void hpte_init_beat(void);
extern void hpte_init_beat_v3(void);
extern void slb_shadow_clear_all(void);
extern void stabs_alloc(void);
extern void slb_initialize(void);
extern void slb_flush_and_rebolt(void);