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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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658b6eda20
This patch enables cpu model support in kvm/s390 via the vm attribute interface. During KVM initialization, the host properties cpuid, IBC value and the facility list are stored in the architecture specific cpu model structure. During vcpu setup, these properties are taken to initialize the related SIE state. This mechanism allows to adjust the properties from user space and thus to implement different selectable cpu models. This patch uses the IBC functionality to block instructions that have not been implemented at the requested CPU type and GA level compared to the full host capability. Userspace has to initialize the cpu model before vcpu creation. A cpu model change of running vcpus is not possible. Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
179 lines
4.8 KiB
C
179 lines
4.8 KiB
C
#ifndef __LINUX_KVM_S390_H
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#define __LINUX_KVM_S390_H
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/*
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* KVM s390 specific structures and definitions
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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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* Christian Borntraeger <borntraeger@de.ibm.com>
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*/
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#include <linux/types.h>
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#define __KVM_S390
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#define __KVM_HAVE_GUEST_DEBUG
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/* Device control API: s390-specific devices */
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#define KVM_DEV_FLIC_GET_ALL_IRQS 1
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#define KVM_DEV_FLIC_ENQUEUE 2
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#define KVM_DEV_FLIC_CLEAR_IRQS 3
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#define KVM_DEV_FLIC_APF_ENABLE 4
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#define KVM_DEV_FLIC_APF_DISABLE_WAIT 5
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#define KVM_DEV_FLIC_ADAPTER_REGISTER 6
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#define KVM_DEV_FLIC_ADAPTER_MODIFY 7
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/*
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* We can have up to 4*64k pending subchannels + 8 adapter interrupts,
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* as well as up to ASYNC_PF_PER_VCPU*KVM_MAX_VCPUS pfault done interrupts.
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* There are also sclp and machine checks. This gives us
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* sizeof(kvm_s390_irq)*(4*65536+8+64*64+1+1) = 72 * 266250 = 19170000
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* Lets round up to 8192 pages.
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*/
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#define KVM_S390_MAX_FLOAT_IRQS 266250
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#define KVM_S390_FLIC_MAX_BUFFER 0x2000000
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struct kvm_s390_io_adapter {
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__u32 id;
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__u8 isc;
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__u8 maskable;
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__u8 swap;
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__u8 pad;
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};
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#define KVM_S390_IO_ADAPTER_MASK 1
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#define KVM_S390_IO_ADAPTER_MAP 2
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#define KVM_S390_IO_ADAPTER_UNMAP 3
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struct kvm_s390_io_adapter_req {
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__u32 id;
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__u8 type;
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__u8 mask;
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__u16 pad0;
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__u64 addr;
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};
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/* kvm attr_group on vm fd */
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#define KVM_S390_VM_MEM_CTRL 0
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#define KVM_S390_VM_TOD 1
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#define KVM_S390_VM_CRYPTO 2
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#define KVM_S390_VM_CPU_MODEL 3
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/* kvm attributes for mem_ctrl */
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#define KVM_S390_VM_MEM_ENABLE_CMMA 0
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#define KVM_S390_VM_MEM_CLR_CMMA 1
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#define KVM_S390_VM_MEM_LIMIT_SIZE 2
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/* kvm attributes for KVM_S390_VM_TOD */
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#define KVM_S390_VM_TOD_LOW 0
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#define KVM_S390_VM_TOD_HIGH 1
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/* kvm attributes for KVM_S390_VM_CPU_MODEL */
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/* processor related attributes are r/w */
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#define KVM_S390_VM_CPU_PROCESSOR 0
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struct kvm_s390_vm_cpu_processor {
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__u64 cpuid;
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__u16 ibc;
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__u8 pad[6];
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__u64 fac_list[256];
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};
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/* machine related attributes are r/o */
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#define KVM_S390_VM_CPU_MACHINE 1
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struct kvm_s390_vm_cpu_machine {
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__u64 cpuid;
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__u32 ibc;
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__u8 pad[4];
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__u64 fac_mask[256];
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__u64 fac_list[256];
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};
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/* kvm attributes for crypto */
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#define KVM_S390_VM_CRYPTO_ENABLE_AES_KW 0
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#define KVM_S390_VM_CRYPTO_ENABLE_DEA_KW 1
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#define KVM_S390_VM_CRYPTO_DISABLE_AES_KW 2
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#define KVM_S390_VM_CRYPTO_DISABLE_DEA_KW 3
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/* for KVM_GET_REGS and KVM_SET_REGS */
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struct kvm_regs {
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/* general purpose regs for s390 */
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__u64 gprs[16];
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};
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/* for KVM_GET_SREGS and KVM_SET_SREGS */
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struct kvm_sregs {
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__u32 acrs[16];
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__u64 crs[16];
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};
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/* for KVM_GET_FPU and KVM_SET_FPU */
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struct kvm_fpu {
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__u32 fpc;
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__u64 fprs[16];
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};
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#define KVM_GUESTDBG_USE_HW_BP 0x00010000
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#define KVM_HW_BP 1
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#define KVM_HW_WP_WRITE 2
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#define KVM_SINGLESTEP 4
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struct kvm_debug_exit_arch {
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__u64 addr;
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__u8 type;
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__u8 pad[7]; /* Should be set to 0 */
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};
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struct kvm_hw_breakpoint {
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__u64 addr;
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__u64 phys_addr;
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__u64 len;
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__u8 type;
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__u8 pad[7]; /* Should be set to 0 */
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};
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/* for KVM_SET_GUEST_DEBUG */
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struct kvm_guest_debug_arch {
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__u32 nr_hw_bp;
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__u32 pad; /* Should be set to 0 */
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struct kvm_hw_breakpoint __user *hw_bp;
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};
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/* for KVM_SYNC_PFAULT and KVM_REG_S390_PFTOKEN */
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#define KVM_S390_PFAULT_TOKEN_INVALID 0xffffffffffffffffULL
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#define KVM_SYNC_PREFIX (1UL << 0)
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#define KVM_SYNC_GPRS (1UL << 1)
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#define KVM_SYNC_ACRS (1UL << 2)
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#define KVM_SYNC_CRS (1UL << 3)
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#define KVM_SYNC_ARCH0 (1UL << 4)
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#define KVM_SYNC_PFAULT (1UL << 5)
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/* definition of registers in kvm_run */
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struct kvm_sync_regs {
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__u64 prefix; /* prefix register */
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__u64 gprs[16]; /* general purpose registers */
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__u32 acrs[16]; /* access registers */
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__u64 crs[16]; /* control registers */
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__u64 todpr; /* tod programmable register [ARCH0] */
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__u64 cputm; /* cpu timer [ARCH0] */
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__u64 ckc; /* clock comparator [ARCH0] */
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__u64 pp; /* program parameter [ARCH0] */
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__u64 gbea; /* guest breaking-event address [ARCH0] */
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__u64 pft; /* pfault token [PFAULT] */
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__u64 pfs; /* pfault select [PFAULT] */
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__u64 pfc; /* pfault compare [PFAULT] */
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};
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#define KVM_REG_S390_TODPR (KVM_REG_S390 | KVM_REG_SIZE_U32 | 0x1)
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#define KVM_REG_S390_EPOCHDIFF (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x2)
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#define KVM_REG_S390_CPU_TIMER (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x3)
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#define KVM_REG_S390_CLOCK_COMP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x4)
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#define KVM_REG_S390_PFTOKEN (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x5)
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#define KVM_REG_S390_PFCOMPARE (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x6)
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#define KVM_REG_S390_PFSELECT (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x7)
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#define KVM_REG_S390_PP (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x8)
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#define KVM_REG_S390_GBEA (KVM_REG_S390 | KVM_REG_SIZE_U64 | 0x9)
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#endif
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