cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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kvm_book3s_asm.h (3665B)


      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 *
      4 * Copyright SUSE Linux Products GmbH 2009
      5 *
      6 * Authors: Alexander Graf <agraf@suse.de>
      7 */
      8
      9#ifndef __ASM_KVM_BOOK3S_ASM_H__
     10#define __ASM_KVM_BOOK3S_ASM_H__
     11
     12/* XICS ICP register offsets */
     13#define XICS_XIRR		4
     14#define XICS_MFRR		0xc
     15#define XICS_IPI		2	/* interrupt source # for IPIs */
     16
     17/* Maximum number of threads per physical core */
     18#define MAX_SMT_THREADS		8
     19
     20/* Maximum number of subcores per physical core */
     21#define MAX_SUBCORES		4
     22
     23#ifdef __ASSEMBLY__
     24
     25#ifdef CONFIG_KVM_BOOK3S_HANDLER
     26
     27#include <asm/kvm_asm.h>
     28
     29.macro DO_KVM intno
     30	.if (\intno == BOOK3S_INTERRUPT_SYSTEM_RESET) || \
     31	    (\intno == BOOK3S_INTERRUPT_MACHINE_CHECK) || \
     32	    (\intno == BOOK3S_INTERRUPT_DATA_STORAGE) || \
     33	    (\intno == BOOK3S_INTERRUPT_INST_STORAGE) || \
     34	    (\intno == BOOK3S_INTERRUPT_DATA_SEGMENT) || \
     35	    (\intno == BOOK3S_INTERRUPT_INST_SEGMENT) || \
     36	    (\intno == BOOK3S_INTERRUPT_EXTERNAL) || \
     37	    (\intno == BOOK3S_INTERRUPT_EXTERNAL_HV) || \
     38	    (\intno == BOOK3S_INTERRUPT_ALIGNMENT) || \
     39	    (\intno == BOOK3S_INTERRUPT_PROGRAM) || \
     40	    (\intno == BOOK3S_INTERRUPT_FP_UNAVAIL) || \
     41	    (\intno == BOOK3S_INTERRUPT_DECREMENTER) || \
     42	    (\intno == BOOK3S_INTERRUPT_SYSCALL) || \
     43	    (\intno == BOOK3S_INTERRUPT_TRACE) || \
     44	    (\intno == BOOK3S_INTERRUPT_PERFMON) || \
     45	    (\intno == BOOK3S_INTERRUPT_ALTIVEC) || \
     46	    (\intno == BOOK3S_INTERRUPT_VSX)
     47
     48	b	kvmppc_trampoline_\intno
     49kvmppc_resume_\intno:
     50
     51	.endif
     52.endm
     53
     54#else
     55
     56.macro DO_KVM intno
     57.endm
     58
     59#endif /* CONFIG_KVM_BOOK3S_HANDLER */
     60
     61#else  /*__ASSEMBLY__ */
     62
     63struct kvmppc_vcore;
     64
     65/* Struct used for coordinating micro-threading (split-core) mode changes */
     66struct kvm_split_mode {
     67	unsigned long	rpr;
     68	unsigned long	pmmar;
     69	unsigned long	ldbar;
     70	u8		subcore_size;
     71	u8		do_nap;
     72	u8		napped[MAX_SMT_THREADS];
     73	struct kvmppc_vcore *vc[MAX_SUBCORES];
     74};
     75
     76/*
     77 * This struct goes in the PACA on 64-bit processors.  It is used
     78 * to store host state that needs to be saved when we enter a guest
     79 * and restored when we exit, but isn't specific to any particular
     80 * guest or vcpu.  It also has some scratch fields used by the guest
     81 * exit code.
     82 */
     83struct kvmppc_host_state {
     84	ulong host_r1;
     85	ulong host_r2;
     86	ulong host_msr;
     87	ulong vmhandler;
     88	ulong scratch0;
     89	ulong scratch1;
     90	ulong scratch2;
     91	u8 in_guest;
     92	u8 restore_hid5;
     93	u8 napping;
     94
     95#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
     96	u8 hwthread_req;
     97	u8 hwthread_state;
     98	u8 host_ipi;
     99	u8 ptid;		/* thread number within subcore when split */
    100	u8 fake_suspend;
    101	struct kvm_vcpu *kvm_vcpu;
    102	struct kvmppc_vcore *kvm_vcore;
    103	void __iomem *xics_phys;
    104	void __iomem *xive_tima_phys;
    105	void __iomem *xive_tima_virt;
    106	u32 saved_xirr;
    107	u64 dabr;
    108	u64 host_mmcr[10];	/* MMCR 0,1,A, SIAR, SDAR, MMCR2, SIER, MMCR3, SIER2/3 */
    109	u32 host_pmc[8];
    110	u64 host_purr;
    111	u64 host_spurr;
    112	u64 host_dscr;
    113	u64 dec_expires;
    114	struct kvm_split_mode *kvm_split_mode;
    115#endif
    116#ifdef CONFIG_PPC_BOOK3S_64
    117	u64 cfar;
    118	u64 ppr;
    119	u64 host_fscr;
    120#endif
    121};
    122
    123struct kvmppc_book3s_shadow_vcpu {
    124	bool in_use;
    125	ulong gpr[14];
    126	u32 cr;
    127	ulong xer;
    128	ulong ctr;
    129	ulong lr;
    130	ulong pc;
    131
    132	ulong shadow_srr1;
    133	ulong fault_dar;
    134	u32 fault_dsisr;
    135	u32 last_inst;
    136
    137#ifdef CONFIG_PPC_BOOK3S_32
    138	u32     sr[16];			/* Guest SRs */
    139
    140	struct kvmppc_host_state hstate;
    141#endif
    142
    143#ifdef CONFIG_PPC_BOOK3S_64
    144	u8 slb_max;			/* highest used guest slb entry */
    145	struct  {
    146		u64     esid;
    147		u64     vsid;
    148	} slb[64];			/* guest SLB */
    149	u64 shadow_fscr;
    150#endif
    151};
    152
    153#endif /*__ASSEMBLY__ */
    154
    155/* Values for kvm_state */
    156#define KVM_HWTHREAD_IN_KERNEL	0
    157#define KVM_HWTHREAD_IN_IDLE	1
    158#define KVM_HWTHREAD_IN_KVM	2
    159
    160#endif /* __ASM_KVM_BOOK3S_ASM_H__ */