8f2abe6a1e
This path introduces handling of sie intercepts in three flavors: Intercepts are either handled completely in-kernel by kvm_handle_sie_intercept(), or passed to userspace with corresponding data in struct kvm_run in case kvm_handle_sie_intercept() returns -ENOTSUPP. In case of partial execution in kernel with the need of userspace support, kvm_handle_sie_intercept() may choose to set up struct kvm_run and return -EREMOTE. The trivial intercept reasons are handled in this patch: handle_noop() just does nothing for intercepts that don't require our support at all handle_stop() is called when a cpu enters stopped state, and it drops out to userland after updating our vcpu state handle_validity() faults in the cpu lowcore if needed, or passes the request to userland Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
132 lines
3.3 KiB
C
132 lines
3.3 KiB
C
/*
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* asm-s390/kvm_host.h - definition for kernel virtual machines on s390
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*
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* Copyright IBM Corp. 2008
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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 (version 2 only)
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* as published by the Free Software Foundation.
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*
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* Author(s): Carsten Otte <cotte@de.ibm.com>
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*/
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#ifndef ASM_KVM_HOST_H
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#define ASM_KVM_HOST_H
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#include <linux/kvm_host.h>
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#include <asm/debug.h>
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#define KVM_MAX_VCPUS 64
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#define KVM_MEMORY_SLOTS 32
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/* memory slots that does not exposed to userspace */
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#define KVM_PRIVATE_MEM_SLOTS 4
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struct kvm_guest_debug {
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};
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struct sca_entry {
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atomic_t scn;
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__u64 reserved;
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__u64 sda;
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__u64 reserved2[2];
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} __attribute__((packed));
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struct sca_block {
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__u64 ipte_control;
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__u64 reserved[5];
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__u64 mcn;
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__u64 reserved2;
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struct sca_entry cpu[64];
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} __attribute__((packed));
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#define KVM_PAGES_PER_HPAGE 256
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#define CPUSTAT_HOST 0x80000000
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#define CPUSTAT_WAIT 0x10000000
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#define CPUSTAT_ECALL_PEND 0x08000000
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#define CPUSTAT_STOP_INT 0x04000000
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#define CPUSTAT_IO_INT 0x02000000
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#define CPUSTAT_EXT_INT 0x01000000
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#define CPUSTAT_RUNNING 0x00800000
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#define CPUSTAT_RETAINED 0x00400000
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#define CPUSTAT_TIMING_SUB 0x00020000
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#define CPUSTAT_SIE_SUB 0x00010000
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#define CPUSTAT_RRF 0x00008000
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#define CPUSTAT_SLSV 0x00004000
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#define CPUSTAT_SLSR 0x00002000
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#define CPUSTAT_ZARCH 0x00000800
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#define CPUSTAT_MCDS 0x00000100
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#define CPUSTAT_SM 0x00000080
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#define CPUSTAT_G 0x00000008
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#define CPUSTAT_J 0x00000002
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#define CPUSTAT_P 0x00000001
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struct sie_block {
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atomic_t cpuflags; /* 0x0000 */
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__u32 prefix; /* 0x0004 */
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__u8 reserved8[32]; /* 0x0008 */
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__u64 cputm; /* 0x0028 */
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__u64 ckc; /* 0x0030 */
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__u64 epoch; /* 0x0038 */
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__u8 reserved40[4]; /* 0x0040 */
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__u16 lctl; /* 0x0044 */
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__s16 icpua; /* 0x0046 */
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__u32 ictl; /* 0x0048 */
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__u32 eca; /* 0x004c */
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__u8 icptcode; /* 0x0050 */
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__u8 reserved51; /* 0x0051 */
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__u16 ihcpu; /* 0x0052 */
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__u8 reserved54[2]; /* 0x0054 */
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__u16 ipa; /* 0x0056 */
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__u32 ipb; /* 0x0058 */
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__u32 scaoh; /* 0x005c */
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__u8 reserved60; /* 0x0060 */
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__u8 ecb; /* 0x0061 */
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__u8 reserved62[2]; /* 0x0062 */
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__u32 scaol; /* 0x0064 */
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__u8 reserved68[4]; /* 0x0068 */
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__u32 todpr; /* 0x006c */
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__u8 reserved70[16]; /* 0x0070 */
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__u64 gmsor; /* 0x0080 */
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__u64 gmslm; /* 0x0088 */
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psw_t gpsw; /* 0x0090 */
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__u64 gg14; /* 0x00a0 */
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__u64 gg15; /* 0x00a8 */
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__u8 reservedb0[80]; /* 0x00b0 */
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__u64 gcr[16]; /* 0x0100 */
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__u64 gbea; /* 0x0180 */
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__u8 reserved188[120]; /* 0x0188 */
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} __attribute__((packed));
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struct kvm_vcpu_stat {
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u32 exit_userspace;
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u32 exit_external_request;
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u32 exit_external_interrupt;
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u32 exit_stop_request;
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u32 exit_validity;
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};
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struct kvm_vcpu_arch {
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struct sie_block *sie_block;
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unsigned long guest_gprs[16];
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s390_fp_regs host_fpregs;
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unsigned int host_acrs[NUM_ACRS];
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s390_fp_regs guest_fpregs;
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unsigned int guest_acrs[NUM_ACRS];
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};
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struct kvm_vm_stat {
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u32 remote_tlb_flush;
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};
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struct kvm_arch{
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unsigned long guest_origin;
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unsigned long guest_memsize;
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struct sca_block *sca;
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debug_info_t *dbf;
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};
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extern int sie64a(struct sie_block *, __u64 *);
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#endif
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