forked from luck/tmp_suning_uos_patched
ccce9bb83e
The __cpuinit type of throwaway sections might have made sense
some time ago when RAM was more constrained, but now the savings
do not offset the cost and complications. For example, the fix in
commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time")
is a good example of the nasty type of bugs that can be created
with improper use of the various __init prefixes.
After a discussion on LKML[1] it was decided that cpuinit should go
the way of devinit and be phased out. Once all the users are gone,
we can then finally remove the macros themselves from linux/init.h.
This removes all the ia64 uses of the __cpuinit macros.
[1] https://lkml.org/lkml/2013/5/20/589
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/******************************************************************************
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* arch/ia64/xen/hypervisor.c
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*
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* Copyright (c) 2006 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/efi.h>
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#include <linux/export.h>
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#include <asm/xen/hypervisor.h>
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#include <asm/xen/privop.h>
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#include "irq_xen.h"
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struct shared_info *HYPERVISOR_shared_info __read_mostly =
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(struct shared_info *)XSI_BASE;
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EXPORT_SYMBOL(HYPERVISOR_shared_info);
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DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
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struct start_info *xen_start_info;
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EXPORT_SYMBOL(xen_start_info);
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EXPORT_SYMBOL(xen_domain_type);
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EXPORT_SYMBOL(__hypercall);
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/* Stolen from arch/x86/xen/enlighten.c */
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/*
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* Flag to determine whether vcpu info placement is available on all
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* VCPUs. We assume it is to start with, and then set it to zero on
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* the first failure. This is because it can succeed on some VCPUs
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* and not others, since it can involve hypervisor memory allocation,
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* or because the guest failed to guarantee all the appropriate
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* constraints on all VCPUs (ie buffer can't cross a page boundary).
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*
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* Note that any particular CPU may be using a placed vcpu structure,
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* but we can only optimise if the all are.
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*
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* 0: not available, 1: available
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*/
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static void __init xen_vcpu_setup(int cpu)
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{
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/*
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* WARNING:
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* before changing MAX_VIRT_CPUS,
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* check that shared_info fits on a page
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*/
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BUILD_BUG_ON(sizeof(struct shared_info) > PAGE_SIZE);
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per_cpu(xen_vcpu, cpu) = &HYPERVISOR_shared_info->vcpu_info[cpu];
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}
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void __init xen_setup_vcpu_info_placement(void)
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{
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int cpu;
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for_each_possible_cpu(cpu)
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xen_vcpu_setup(cpu);
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}
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void
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xen_cpu_init(void)
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{
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xen_smp_intr_init();
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}
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/**************************************************************************
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* opt feature
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*/
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void
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xen_ia64_enable_opt_feature(void)
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{
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/* Enable region 7 identity map optimizations in Xen */
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struct xen_ia64_opt_feature optf;
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optf.cmd = XEN_IA64_OPTF_IDENT_MAP_REG7;
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optf.on = XEN_IA64_OPTF_ON;
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optf.pgprot = pgprot_val(PAGE_KERNEL);
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optf.key = 0; /* No key on linux. */
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HYPERVISOR_opt_feature(&optf);
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}
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