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[SPARC64]: Initial sun4v TLB miss handling infrastructure.

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Things are a little tricky because, unlike sun4u, we have
to:

1) do a hypervisor trap to do the TLB load.
2) do the TSB lookup calculations by hand

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2006-02-06 23:44:37 -08:00
parent 840aaef8db
commit d257d5da39
8 changed files with 349 additions and 18 deletions
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8
include/asm-sparc64/cpudata.h
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@@ -6,6 +6,8 @@
#ifndef _SPARC64_CPUDATA_H
#define _SPARC64_CPUDATA_H
#include <asm/hypervisor.h>
#ifndef __ASSEMBLY__
#include <linux/percpu.h>
@@ -57,6 +59,9 @@ struct trap_per_cpu {
/* D-cache line 2 */
unsigned long __pad2[4];
/* Dcache lines 3 and 4 */
struct hv_fault_status fault_info;
} __attribute__((aligned(64)));
extern struct trap_per_cpu trap_block[NR_CPUS];
extern void init_cur_cpu_trap(void);
@@ -88,8 +93,9 @@ extern struct gl_2insn_patch_entry __gl_2insn_patch, __gl_2insn_patch_end;
#define TRAP_PER_CPU_THREAD 0x00
#define TRAP_PER_CPU_PGD_PADDR 0x08
#define TRAP_PER_CPU_FAULT_INFO 0x20
#define TRAP_BLOCK_SZ_SHIFT 6
#define TRAP_BLOCK_SZ_SHIFT 7
#include <asm/scratchpad.h>