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OpenCloudOS-Kernel/arch/powerpc/include/asm/kvm_book3s_32.h

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 266 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation 51 franklin street fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 67 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141333.953658117@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-29 22:12:40 +08:00
/* SPDX-License-Identifier: GPL-2.0-only */
KVM: PPC: Add kvm_book3s_32.h In analogy to the 64 bit specific header file, this is the 32 bit pendant. With this in place we can just always call to_svcpu and be assured we get the right pointer anywhere. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-16 06:11:38 +08:00
/*
*
* Copyright SUSE Linux Products GmbH 2010
*
* Authors: Alexander Graf <agraf@suse.de>
*/
#ifndef __ASM_KVM_BOOK3S_32_H__
#define __ASM_KVM_BOOK3S_32_H__
KVM: PPC: Use get/set for to_svcpu to help preemption 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>
2011-12-09 21:44:13 +08:00
static inline struct kvmppc_book3s_shadow_vcpu *svcpu_get(struct kvm_vcpu *vcpu)
KVM: PPC: Add kvm_book3s_32.h In analogy to the 64 bit specific header file, this is the 32 bit pendant. With this in place we can just always call to_svcpu and be assured we get the right pointer anywhere. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-16 06:11:38 +08:00
{
KVM: PPC: Book3S PR: Allocate kvm_vcpu structs from kvm_vcpu_cache This makes PR KVM allocate its kvm_vcpu structs from the kvm_vcpu_cache rather than having them embedded in the kvmppc_vcpu_book3s struct, which is allocated with vzalloc. The reason is to reduce the differences between PR and HV KVM in order to make is easier to have them coexist in one kernel binary. With this, the kvm_vcpu struct has a pointer to the kvmppc_vcpu_book3s struct. The pointer to the kvmppc_book3s_shadow_vcpu struct has moved from the kvmppc_vcpu_book3s struct to the kvm_vcpu struct, and is only present for 32-bit, since it is only used for 32-bit. Signed-off-by: Paul Mackerras <paulus@samba.org> [agraf: squash in compile fix from Aneesh] Signed-off-by: Alexander Graf <agraf@suse.de>
2013-09-20 12:52:49 +08:00
return vcpu->arch.shadow_vcpu;
KVM: PPC: Add kvm_book3s_32.h In analogy to the 64 bit specific header file, this is the 32 bit pendant. With this in place we can just always call to_svcpu and be assured we get the right pointer anywhere. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-16 06:11:38 +08:00
}
KVM: PPC: Use get/set for to_svcpu to help preemption 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>
2011-12-09 21:44:13 +08:00
static inline void svcpu_put(struct kvmppc_book3s_shadow_vcpu *svcpu)
{
}
KVM: PPC: Add kvm_book3s_32.h In analogy to the 64 bit specific header file, this is the 32 bit pendant. With this in place we can just always call to_svcpu and be assured we get the right pointer anywhere. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-16 06:11:38 +08:00
#define PTE_SIZE 12
#define VSID_ALL 0
#define SR_INVALID 0x00000001 /* VSID 1 should always be unused */
#define SR_KP 0x20000000
#define PTE_V 0x80000000
#define PTE_SEC 0x00000040
#define PTE_M 0x00000010
#define PTE_R 0x00000100
#define PTE_C 0x00000080
#define SID_SHIFT 28
#define ESID_MASK 0xf0000000
#define VSID_MASK 0x00fffffff0000000ULL
powerpc: Build fix for powerpc KVM Fix build failure for powerpc KVM by adding missing VPN_SHIFT definition and the ';' arch/powerpc/kvm/book3s_32_mmu_host.c: In function 'kvmppc_mmu_map_page': arch/powerpc/kvm/book3s_32_mmu_host.c:176: error: 'VPN_SHIFT' undeclared (first use in this function) arch/powerpc/kvm/book3s_32_mmu_host.c:176: error: (Each undeclared identifier is reported only once arch/powerpc/kvm/book3s_32_mmu_host.c:176: error: for each function it appears in.) arch/powerpc/kvm/book3s_32_mmu_host.c:178: error: expected ';' before 'next_pteg' arch/powerpc/kvm/book3s_32_mmu_host.c:190: error: label 'next_pteg' used but not defined make[1]: *** [arch/powerpc/kvm/book3s_32_mmu_host.o] Error 1 Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-10-17 06:25:45 +08:00
#define VPN_SHIFT 12
KVM: PPC: Add kvm_book3s_32.h In analogy to the 64 bit specific header file, this is the 32 bit pendant. With this in place we can just always call to_svcpu and be assured we get the right pointer anywhere. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-04-16 06:11:38 +08:00
#endif /* __ASM_KVM_BOOK3S_32_H__ */