468a12c2b5
When running the 64-bit Book3s PR code without CONFIG_PREEMPT_NONE, we were doing a few things wrong, most notably access to PACA fields without making sure that the pointers stay stable accross the access (preempt_disable()). This patch moves to_svcpu towards a get/put model which allows us to disable preemption while accessing the shadow vcpu fields in the PACA. That way we can run preemptible and everyone's happy! Reported-by: Jörg Sommer <joerg@alea.gnuu.de> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/*
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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, version 2, as
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* published by the Free Software Foundation.
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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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright SUSE Linux Products GmbH 2010
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*
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* Authors: Alexander Graf <agraf@suse.de>
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*/
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#ifndef __ASM_KVM_BOOK3S_32_H__
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#define __ASM_KVM_BOOK3S_32_H__
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static inline struct kvmppc_book3s_shadow_vcpu *svcpu_get(struct kvm_vcpu *vcpu)
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{
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return to_book3s(vcpu)->shadow_vcpu;
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}
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static inline void svcpu_put(struct kvmppc_book3s_shadow_vcpu *svcpu)
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{
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}
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#define PTE_SIZE 12
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#define VSID_ALL 0
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#define SR_INVALID 0x00000001 /* VSID 1 should always be unused */
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#define SR_KP 0x20000000
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#define PTE_V 0x80000000
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#define PTE_SEC 0x00000040
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#define PTE_M 0x00000010
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#define PTE_R 0x00000100
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#define PTE_C 0x00000080
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#define SID_SHIFT 28
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#define ESID_MASK 0xf0000000
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#define VSID_MASK 0x00fffffff0000000ULL
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#endif /* __ASM_KVM_BOOK3S_32_H__ */
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