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linux/arch/powerpc/include/asm/kvm_book3s.h

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Add asm/kvm_book3s.h This adds the book3s specific header file that contains structs that are only valid on book3s specific code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 13:47:05 +08:00
/*
* 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.
*
* Copyright SUSE Linux Products GmbH 2009
*
* Authors: Alexander Graf <agraf@suse.de>
*/
#ifndef __ASM_KVM_BOOK3S_H__
#define __ASM_KVM_BOOK3S_H__
#include <linux/types.h>
#include <linux/kvm_host.h>
KVM: PPC: Use PACA backed shadow vcpu We're being horribly racy right now. All the entry and exit code hijacks random fields from the PACA that could easily be used by different code in case we get interrupted, for example by a #MC or even page fault. After discussing this with Ben, we figured it's best to reserve some more space in the PACA and just shove off some vcpu state to there. That way we can drastically improve the readability of the code, make it less racy and less complex. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-01-08 09:58:03 +08:00
#include <asm/kvm_book3s_64_asm.h>
Add asm/kvm_book3s.h This adds the book3s specific header file that contains structs that are only valid on book3s specific code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 13:47:05 +08:00
struct kvmppc_slb {
u64 esid;
u64 vsid;
u64 orige;
u64 origv;
bool valid;
bool Ks;
bool Kp;
bool nx;
KVM: PPC: Make large pages work An SLB entry contains two pieces of information related to size: 1) PTE size 2) SLB size The L bit defines the PTE be "large" (usually means 16MB), SLB_VSID_B_1T defines that the SLB should span 1 GB instead of the default 256MB. Apparently I messed things up and just put those two in one box, shaked it heavily and came up with the current code which handles large pages incorrectly, because it also treats large page SLB entries as "1TB" segment entries. This patch splits those two features apart, making Linux guests boot even when they have > 256MB. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-01-10 10:27:47 +08:00
bool large; /* PTEs are 16MB */
bool tb; /* 1TB segment */
Add asm/kvm_book3s.h This adds the book3s specific header file that contains structs that are only valid on book3s specific code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 13:47:05 +08:00
bool class;
};
struct kvmppc_sr {
u32 raw;
u32 vsid;
bool Ks;
bool Kp;
bool nx;
KVM: PPC: Book3S_32 guest MMU fixes This patch makes the VSID of mapped pages always reflecting all special cases we have, like split mode. It also changes the tlbie mask to 0x0ffff000 according to the spec. The mask we used before was incorrect. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-25 04:48:20 +08:00
bool valid;
Add asm/kvm_book3s.h This adds the book3s specific header file that contains structs that are only valid on book3s specific code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 13:47:05 +08:00
};
struct kvmppc_bat {
powerpc/kvm: Sync guest visible MMU state Currently userspace has no chance to find out which virtual address space we're in and resolve addresses. While that is a big problem for migration, it's also unpleasent when debugging, as gdb and the monitor don't work on virtual addresses. This patch exports enough of the MMU segment state to userspace to make debugging work and thus also includes the groundwork for migration. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-11-30 11:02:02 +08:00
u64 raw;
Add asm/kvm_book3s.h This adds the book3s specific header file that contains structs that are only valid on book3s specific code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 13:47:05 +08:00
u32 bepi;
u32 bepi_mask;
bool vs;
bool vp;
u32 brpn;
u8 wimg;
u8 pp;
};
struct kvmppc_sid_map {
u64 guest_vsid;
u64 guest_esid;
u64 host_vsid;
bool valid;
};
#define SID_MAP_BITS 9
#define SID_MAP_NUM (1 << SID_MAP_BITS)
#define SID_MAP_MASK (SID_MAP_NUM - 1)
struct kvmppc_vcpu_book3s {
struct kvm_vcpu vcpu;
KVM: PPC: Use PACA backed shadow vcpu We're being horribly racy right now. All the entry and exit code hijacks random fields from the PACA that could easily be used by different code in case we get interrupted, for example by a #MC or even page fault. After discussing this with Ben, we figured it's best to reserve some more space in the PACA and just shove off some vcpu state to there. That way we can drastically improve the readability of the code, make it less racy and less complex. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-01-08 09:58:03 +08:00
struct kvmppc_book3s_shadow_vcpu shadow_vcpu;
Add asm/kvm_book3s.h This adds the book3s specific header file that contains structs that are only valid on book3s specific code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 13:47:05 +08:00
struct kvmppc_sid_map sid_map[SID_MAP_NUM];
struct kvmppc_slb slb[64];
struct {
u64 esid;
u64 vsid;
} slb_shadow[64];
u8 slb_shadow_max;
struct kvmppc_sr sr[16];
struct kvmppc_bat ibat[8];
struct kvmppc_bat dbat[8];
u64 hid[6];
KVM: PPC: Add Gekko SPRs The Gekko has some SPR values that differ from other PPC core values and also some additional ones. Let's add support for them in our mfspr/mtspr emulator. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-02-19 18:00:33 +08:00
u64 gqr[8];
Add asm/kvm_book3s.h This adds the book3s specific header file that contains structs that are only valid on book3s specific code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 13:47:05 +08:00
int slb_nr;
KVM: PPC: Make DSISR 32 bits wide DSISR is only defined as 32 bits wide. So let's reflect that in the structs too. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-25 04:48:19 +08:00
u32 dsisr;
Add asm/kvm_book3s.h This adds the book3s specific header file that contains structs that are only valid on book3s specific code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 13:47:05 +08:00
u64 sdr1;
u64 hior;
u64 msr_mask;
u64 vsid_first;
u64 vsid_next;
u64 vsid_max;
int context_id;
KVM: PPC: Emulate trap SRR1 flags properly Book3S needs some flags in SRR1 to get to know details about an interrupt. One such example is the trap instruction. It tells the guest kernel that a program interrupt is due to a trap using a bit in SRR1. This patch implements above behavior, making WARN_ON behave like WARN_ON. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-01-08 09:58:07 +08:00
ulong prog_flags; /* flags to inject when giving a 700 trap */
Add asm/kvm_book3s.h This adds the book3s specific header file that contains structs that are only valid on book3s specific code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 13:47:05 +08:00
};
#define CONTEXT_HOST 0
#define CONTEXT_GUEST 1
#define CONTEXT_GUEST_END 2
KVM: PPC: Ensure split mode works On PowerPC we can go into MMU Split Mode. That means that either data relocation is on but instruction relocation is off or vice versa. That mode didn't work properly, as we weren't always flushing entries when going into a new split mode, potentially mapping different code or data that we're supposed to. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-25 04:48:17 +08:00
#define VSID_REAL_DR 0x7ffffffffff00000
#define VSID_REAL_IR 0x7fffffffffe00000
#define VSID_SPLIT_MASK 0x7fffffffffe00000
#define VSID_REAL 0x7fffffffffc00000
#define VSID_BAT 0x7fffffffffb00000
Add asm/kvm_book3s.h This adds the book3s specific header file that contains structs that are only valid on book3s specific code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 13:47:05 +08:00
#define VSID_PR 0x8000000000000000
extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, u64 ea, u64 ea_mask);
extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, u64 pa_start, u64 pa_end);
extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
extern struct kvmppc_pte *kvmppc_mmu_find_pte(struct kvm_vcpu *vcpu, u64 ea, bool data);
KVM: PPC: Make software load/store return eaddr The Book3S KVM implementation contains some helper functions to load and store data from and to virtual addresses. Unfortunately, this helper used to keep the physical address it so nicely found out for us to itself. So let's change that and make it return the physical address it resolved. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-02-19 18:00:38 +08:00
extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
Add asm/kvm_book3s.h This adds the book3s specific header file that contains structs that are only valid on book3s specific code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 13:47:05 +08:00
extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
powerpc/kvm: Sync guest visible MMU state Currently userspace has no chance to find out which virtual address space we're in and resolve addresses. While that is a big problem for migration, it's also unpleasent when debugging, as gdb and the monitor don't work on virtual addresses. This patch exports enough of the MMU segment state to userspace to make debugging work and thus also includes the groundwork for migration. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-11-30 11:02:02 +08:00
extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
bool upper, u32 val);
KVM: PPC: Make ext giveup non-static We need to call the ext giveup handlers from code outside of book3s.c. So let's make it non-static. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-02-19 18:00:39 +08:00
extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
KVM: PPC: Implement Paired Single emulation The one big thing about the Gekko is paired singles. Paired singles are an extension to the instruction set, that adds 32 single precision floating point registers (qprs), some SPRs to modify the behavior of paired singled operations and instructions to deal with qprs to the instruction set. Unfortunately, it also changes semantics of existing operations that affect single values in FPRs. In most cases they get mirrored to the coresponding QPR. Thanks to that we need to emulate all FPU operations and all the new paired single operations too. In order to achieve that, we use the just introduced FPU call helpers to call the real FPU whenever the guest wants to modify an FPR. Additionally we also fix up the QPR values along the way. That way we can execute paired single FPU operations without implementing a soft fpu. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-02-19 18:00:44 +08:00
extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
Add asm/kvm_book3s.h This adds the book3s specific header file that contains structs that are only valid on book3s specific code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 13:47:05 +08:00
extern u32 kvmppc_trampoline_lowmem;
extern u32 kvmppc_trampoline_enter;
KVM: PPC: Call SLB patching code in interrupt safe manner Currently we're racy when doing the transition from IR=1 to IR=0, from the module memory entry code to the real mode SLB switching code. To work around that I took a look at the RTAS entry code which is faced with a similar problem and did the same thing: A small helper in linear mapped memory that does mtmsr with IR=0 and then RFIs info the actual handler. Thanks to that trick we can safely take page faults in the entry code and only need to be really wary of what to do as of the SLB switching part. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-01-08 09:58:06 +08:00
extern void kvmppc_rmcall(ulong srr0, ulong srr1);
KVM: PPC: Add helper functions to call real mode loaders Linux contains quite some bits of code to load FPU, Altivec and VSX lazily for a task. It calls those bits in real mode, coming from an interrupt handler. For KVM we better reuse those, so let's wrap a bit of trampoline magic around them and then we can call them from normal module code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-01-15 21:49:10 +08:00
extern void kvmppc_load_up_fpu(void);
extern void kvmppc_load_up_altivec(void);
extern void kvmppc_load_up_vsx(void);
Add asm/kvm_book3s.h This adds the book3s specific header file that contains structs that are only valid on book3s specific code. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-10-30 13:47:05 +08:00
static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
{
return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu);
}
static inline ulong dsisr(void)
{
ulong r;
asm ( "mfdsisr %0 " : "=r" (r) );
return r;
}
extern void kvm_return_point(void);
#define INS_DCBZ 0x7c0007ec
#endif /* __ASM_KVM_BOOK3S_H__ */