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![Alexander Graf](/assets/img/avatar_default.png)
There are multiple features in PowerPC KVM that can now be enabled depending on the user's wishes. Some of the combinations don't make sense or don't work though. So this patch adds a way to check if the executing environment would actually be able to run the guest properly. It also adds sanity checks if PVR is set (should always be true given the current code flow), if PAPR is only used with book3s_64 where it works and that HV KVM is only used in PAPR mode. Signed-off-by: Alexander Graf <agraf@suse.de>
303 lines
7 KiB
C
303 lines
7 KiB
C
/*
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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, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright IBM Corp. 2007
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*
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* Authors: Hollis Blanchard <hollisb@us.ibm.com>
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*/
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#ifndef __LINUX_KVM_POWERPC_H
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#define __LINUX_KVM_POWERPC_H
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#include <linux/types.h>
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/* Select powerpc specific features in <linux/kvm.h> */
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#define __KVM_HAVE_SPAPR_TCE
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#define __KVM_HAVE_PPC_SMT
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struct kvm_regs {
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__u64 pc;
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__u64 cr;
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__u64 ctr;
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__u64 lr;
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__u64 xer;
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__u64 msr;
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__u64 srr0;
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__u64 srr1;
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__u64 pid;
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__u64 sprg0;
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__u64 sprg1;
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__u64 sprg2;
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__u64 sprg3;
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__u64 sprg4;
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__u64 sprg5;
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__u64 sprg6;
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__u64 sprg7;
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__u64 gpr[32];
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};
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#define KVM_SREGS_E_IMPL_NONE 0
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#define KVM_SREGS_E_IMPL_FSL 1
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#define KVM_SREGS_E_FSL_PIDn (1 << 0) /* PID1/PID2 */
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/*
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* Feature bits indicate which sections of the sregs struct are valid,
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* both in KVM_GET_SREGS and KVM_SET_SREGS. On KVM_SET_SREGS, registers
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* corresponding to unset feature bits will not be modified. This allows
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* restoring a checkpoint made without that feature, while keeping the
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* default values of the new registers.
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*
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* KVM_SREGS_E_BASE contains:
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* CSRR0/1 (refers to SRR2/3 on 40x)
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* ESR
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* DEAR
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* MCSR
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* TSR
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* TCR
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* DEC
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* TB
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* VRSAVE (USPRG0)
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*/
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#define KVM_SREGS_E_BASE (1 << 0)
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/*
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* KVM_SREGS_E_ARCH206 contains:
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*
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* PIR
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* MCSRR0/1
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* DECAR
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* IVPR
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*/
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#define KVM_SREGS_E_ARCH206 (1 << 1)
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/*
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* Contains EPCR, plus the upper half of 64-bit registers
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* that are 32-bit on 32-bit implementations.
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*/
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#define KVM_SREGS_E_64 (1 << 2)
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#define KVM_SREGS_E_SPRG8 (1 << 3)
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#define KVM_SREGS_E_MCIVPR (1 << 4)
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/*
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* IVORs are used -- contains IVOR0-15, plus additional IVORs
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* in combination with an appropriate feature bit.
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*/
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#define KVM_SREGS_E_IVOR (1 << 5)
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/*
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* Contains MAS0-4, MAS6-7, TLBnCFG, MMUCFG.
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* Also TLBnPS if MMUCFG[MAVN] = 1.
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*/
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#define KVM_SREGS_E_ARCH206_MMU (1 << 6)
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/* DBSR, DBCR, IAC, DAC, DVC */
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#define KVM_SREGS_E_DEBUG (1 << 7)
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/* Enhanced debug -- DSRR0/1, SPRG9 */
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#define KVM_SREGS_E_ED (1 << 8)
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/* Embedded Floating Point (SPE) -- IVOR32-34 if KVM_SREGS_E_IVOR */
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#define KVM_SREGS_E_SPE (1 << 9)
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/* External Proxy (EXP) -- EPR */
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#define KVM_SREGS_EXP (1 << 10)
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/* External PID (E.PD) -- EPSC/EPLC */
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#define KVM_SREGS_E_PD (1 << 11)
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/* Processor Control (E.PC) -- IVOR36-37 if KVM_SREGS_E_IVOR */
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#define KVM_SREGS_E_PC (1 << 12)
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/* Page table (E.PT) -- EPTCFG */
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#define KVM_SREGS_E_PT (1 << 13)
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/* Embedded Performance Monitor (E.PM) -- IVOR35 if KVM_SREGS_E_IVOR */
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#define KVM_SREGS_E_PM (1 << 14)
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/*
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* Special updates:
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*
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* Some registers may change even while a vcpu is not running.
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* To avoid losing these changes, by default these registers are
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* not updated by KVM_SET_SREGS. To force an update, set the bit
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* in u.e.update_special corresponding to the register to be updated.
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*
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* The update_special field is zero on return from KVM_GET_SREGS.
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*
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* When restoring a checkpoint, the caller can set update_special
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* to 0xffffffff to ensure that everything is restored, even new features
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* that the caller doesn't know about.
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*/
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#define KVM_SREGS_E_UPDATE_MCSR (1 << 0)
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#define KVM_SREGS_E_UPDATE_TSR (1 << 1)
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#define KVM_SREGS_E_UPDATE_DEC (1 << 2)
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#define KVM_SREGS_E_UPDATE_DBSR (1 << 3)
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/*
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* Book3S special bits to indicate contents in the struct by maintaining
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* backwards compatibility with older structs. If adding a new field,
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* please make sure to add a flag for that new field */
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#define KVM_SREGS_S_HIOR (1 << 0)
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/*
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* In KVM_SET_SREGS, reserved/pad fields must be left untouched from a
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* previous KVM_GET_REGS.
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*
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* Unless otherwise indicated, setting any register with KVM_SET_SREGS
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* directly sets its value. It does not trigger any special semantics such
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* as write-one-to-clear. Calling KVM_SET_SREGS on an unmodified struct
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* just received from KVM_GET_SREGS is always a no-op.
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*/
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struct kvm_sregs {
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__u32 pvr;
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union {
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struct {
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__u64 sdr1;
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struct {
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struct {
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__u64 slbe;
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__u64 slbv;
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} slb[64];
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} ppc64;
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struct {
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__u32 sr[16];
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__u64 ibat[8];
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__u64 dbat[8];
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} ppc32;
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__u64 flags; /* KVM_SREGS_S_ */
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__u64 hior;
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} s;
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struct {
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union {
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struct { /* KVM_SREGS_E_IMPL_FSL */
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__u32 features; /* KVM_SREGS_E_FSL_ */
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__u32 svr;
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__u64 mcar;
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__u32 hid0;
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/* KVM_SREGS_E_FSL_PIDn */
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__u32 pid1, pid2;
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} fsl;
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__u8 pad[256];
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} impl;
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__u32 features; /* KVM_SREGS_E_ */
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__u32 impl_id; /* KVM_SREGS_E_IMPL_ */
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__u32 update_special; /* KVM_SREGS_E_UPDATE_ */
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__u32 pir; /* read-only */
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__u64 sprg8;
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__u64 sprg9; /* E.ED */
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__u64 csrr0;
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__u64 dsrr0; /* E.ED */
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__u64 mcsrr0;
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__u32 csrr1;
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__u32 dsrr1; /* E.ED */
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__u32 mcsrr1;
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__u32 esr;
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__u64 dear;
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__u64 ivpr;
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__u64 mcivpr;
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__u64 mcsr; /* KVM_SREGS_E_UPDATE_MCSR */
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__u32 tsr; /* KVM_SREGS_E_UPDATE_TSR */
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__u32 tcr;
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__u32 decar;
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__u32 dec; /* KVM_SREGS_E_UPDATE_DEC */
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/*
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* Userspace can read TB directly, but the
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* value reported here is consistent with "dec".
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*
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* Read-only.
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*/
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__u64 tb;
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__u32 dbsr; /* KVM_SREGS_E_UPDATE_DBSR */
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__u32 dbcr[3];
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__u32 iac[4];
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__u32 dac[2];
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__u32 dvc[2];
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__u8 num_iac; /* read-only */
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__u8 num_dac; /* read-only */
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__u8 num_dvc; /* read-only */
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__u8 pad;
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__u32 epr; /* EXP */
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__u32 vrsave; /* a.k.a. USPRG0 */
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__u32 epcr; /* KVM_SREGS_E_64 */
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__u32 mas0;
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__u32 mas1;
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__u64 mas2;
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__u64 mas7_3;
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__u32 mas4;
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__u32 mas6;
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__u32 ivor_low[16]; /* IVOR0-15 */
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__u32 ivor_high[18]; /* IVOR32+, plus room to expand */
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__u32 mmucfg; /* read-only */
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__u32 eptcfg; /* E.PT, read-only */
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__u32 tlbcfg[4];/* read-only */
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__u32 tlbps[4]; /* read-only */
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__u32 eplc, epsc; /* E.PD */
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} e;
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__u8 pad[1020];
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} u;
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};
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struct kvm_fpu {
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__u64 fpr[32];
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};
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struct kvm_debug_exit_arch {
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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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};
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#define KVM_REG_MASK 0x001f
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#define KVM_REG_EXT_MASK 0xffe0
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#define KVM_REG_GPR 0x0000
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#define KVM_REG_FPR 0x0020
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#define KVM_REG_QPR 0x0040
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#define KVM_REG_FQPR 0x0060
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#define KVM_INTERRUPT_SET -1U
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#define KVM_INTERRUPT_UNSET -2U
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#define KVM_INTERRUPT_SET_LEVEL -3U
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#define KVM_CPU_440 1
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#define KVM_CPU_E500V2 2
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#define KVM_CPU_3S_32 3
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#define KVM_CPU_3S_64 4
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/* for KVM_CAP_SPAPR_TCE */
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struct kvm_create_spapr_tce {
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__u64 liobn;
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__u32 window_size;
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};
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/* for KVM_ALLOCATE_RMA */
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struct kvm_allocate_rma {
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__u64 rma_size;
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};
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#endif /* __LINUX_KVM_POWERPC_H */
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