e4ff5b8f54
paravirtualize gate page by allowing each pv_ops instances to define its own gate page. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/******************************************************************************
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* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/bug.h>
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#include <asm/paravirt.h>
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#define DECLARE(name) \
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extern unsigned long \
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__ia64_native_start_gate_##name##_patchlist[]; \
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extern unsigned long \
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__ia64_native_end_gate_##name##_patchlist[]
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DECLARE(fsyscall);
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DECLARE(brl_fsys_bubble_down);
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DECLARE(vtop);
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DECLARE(mckinley_e9);
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extern unsigned long __start_gate_section[];
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#define ASSIGN(name) \
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.start_##name##_patchlist = \
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(unsigned long)__ia64_native_start_gate_##name##_patchlist, \
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.end_##name##_patchlist = \
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(unsigned long)__ia64_native_end_gate_##name##_patchlist
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struct pv_patchdata pv_patchdata __initdata = {
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ASSIGN(fsyscall),
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ASSIGN(brl_fsys_bubble_down),
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ASSIGN(vtop),
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ASSIGN(mckinley_e9),
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.gate_section = (void*)__start_gate_section,
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};
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unsigned long __init
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paravirt_get_gate_patchlist(enum pv_gate_patchlist type)
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{
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#define CASE(NAME, name) \
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case PV_GATE_START_##NAME: \
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return pv_patchdata.start_##name##_patchlist; \
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case PV_GATE_END_##NAME: \
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return pv_patchdata.end_##name##_patchlist; \
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switch (type) {
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CASE(FSYSCALL, fsyscall);
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CASE(BRL_FSYS_BUBBLE_DOWN, brl_fsys_bubble_down);
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CASE(VTOP, vtop);
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CASE(MCKINLEY_E9, mckinley_e9);
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default:
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BUG();
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break;
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}
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return 0;
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}
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void * __init
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paravirt_get_gate_section(void)
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{
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return pv_patchdata.gate_section;
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}
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