| Message ID | 20191129094809.26684-2-frankja@linux.ibm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | s390x: Protected Virtualization support | expand |
[...] > > +struct IPLBlockPVComp { > + uint64_t tweak_pref; > + uint64_t addr; > + uint64_t size; > +} QEMU_PACKED; QEMU_PACKED should not be needed. > +typedef struct IPLBlockPVComp IPLBlockPVComp; > + > +struct IPLBlockPV { > + uint8_t reserved[84]; "reserved0" > + uint8_t reserved67[3]; Where does that magic 67 come from? (84 dec is 54 hex) > + uint8_t version; So, to this point we spent 88 bytes == 11 * uint64_t. > + uint32_t num_comp; ... so after this, all uint64_t (and components) are mis-aligned by 32bit - is that correct? > + uint64_t pv_header_addr; > + uint64_t pv_header_len; > + struct IPLBlockPVComp components[]; > +} QEMU_PACKED; > +typedef struct IPLBlockPV IPLBlockPV; > + > struct IplBlockCcw { > uint8_t reserved0[85]; > uint8_t ssid; > @@ -71,6 +89,7 @@ union IplParameterBlock { > union { > IplBlockCcw ccw; > IplBlockFcp fcp; > + IPLBlockPV pv; > IplBlockQemuScsi scsi; > }; > } QEMU_PACKED; > @@ -84,9 +103,11 @@ union IplParameterBlock { > typedef union IplParameterBlock IplParameterBlock; > > int s390_ipl_set_loadparm(uint8_t *loadparm); > +int s390_ipl_pv_check_comp(IplParameterBlock *iplb); > void s390_ipl_update_diag308(IplParameterBlock *iplb); > void s390_ipl_prepare_cpu(S390CPU *cpu); > IplParameterBlock *s390_ipl_get_iplb(void); > +IplParameterBlock *s390_ipl_get_iplb_secure(void); > > enum s390_reset { > /* default is a reset not triggered by a CPU e.g. issued by QMP */ > @@ -94,6 +115,7 @@ enum s390_reset { > S390_RESET_REIPL, > S390_RESET_MODIFIED_CLEAR, > S390_RESET_LOAD_NORMAL, > + S390_RESET_PV, I do wonder if that should be called S390_RESET_PV_START > }; > void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type); > void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type); > @@ -133,6 +155,7 @@ struct S390IPLState { > /*< private >*/ > DeviceState parent_obj; > IplParameterBlock iplb; > + IplParameterBlock iplb_pbt5; > QemuIplParameters qipl; > uint64_t start_addr; > uint64_t compat_start_addr; > @@ -140,6 +163,7 @@ struct S390IPLState { > uint64_t compat_bios_start_addr; > bool enforce_bios; > bool iplb_valid; > + bool iplb_valid_pbt5; > bool netboot; > /* reset related properties don't have to be migrated or reset */ > enum s390_reset reset_type; > @@ -161,9 +185,11 @@ QEMU_BUILD_BUG_MSG(offsetof(S390IPLState, iplb) & 3, "alignment of iplb wrong"); > > #define S390_IPL_TYPE_FCP 0x00 > #define S390_IPL_TYPE_CCW 0x02 > +#define S390_IPL_TYPE_PV 0x05 > #define S390_IPL_TYPE_QEMU_SCSI 0xff > > #define S390_IPLB_HEADER_LEN 8 > +#define S390_IPLB_MIN_PV_LEN 148 > #define S390_IPLB_MIN_CCW_LEN 200 > #define S390_IPLB_MIN_FCP_LEN 384 > #define S390_IPLB_MIN_QEMU_SCSI_LEN 200 > @@ -185,4 +211,11 @@ static inline bool iplb_valid_fcp(IplParameterBlock *iplb) > iplb->pbt == S390_IPL_TYPE_FCP; > } > > +static inline bool iplb_valid_se(IplParameterBlock *iplb) s/_se/_pv/ ? Or was that intended? > +{ > + return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_PV_LEN && > + iplb->pbt == S390_IPL_TYPE_PV; > +} > + > + Maybe drop one empty line > #endif > diff --git a/target/s390x/diag.c b/target/s390x/diag.c > index b5aec06d6b..112a6c92e0 100644 > --- a/target/s390x/diag.c > +++ b/target/s390x/diag.c [...]
On 11/29/19 11:09 AM, David Hildenbrand wrote: > [...] >> >> +struct IPLBlockPVComp { >> + uint64_t tweak_pref; >> + uint64_t addr; >> + uint64_t size; >> +} QEMU_PACKED; > > QEMU_PACKED should not be needed. > >> +typedef struct IPLBlockPVComp IPLBlockPVComp; >> + >> +struct IPLBlockPV { >> + uint8_t reserved[84]; > > "reserved0" > >> + uint8_t reserved67[3]; > > Where does that magic 67 come from? (84 dec is 54 hex) > >> + uint8_t version; > > So, to this point we spent 88 bytes == 11 * uint64_t. I'll have a look > >> + uint32_t num_comp; > > ... so after this, all uint64_t (and components) are mis-aligned by > 32bit - is that correct? > >> + uint64_t pv_header_addr; >> + uint64_t pv_header_len; >> + struct IPLBlockPVComp components[]; >> +} QEMU_PACKED; >> +typedef struct IPLBlockPV IPLBlockPV; >> + >> struct IplBlockCcw { >> uint8_t reserved0[85]; >> uint8_t ssid; >> @@ -71,6 +89,7 @@ union IplParameterBlock { >> union { >> IplBlockCcw ccw; >> IplBlockFcp fcp; >> + IPLBlockPV pv; >> IplBlockQemuScsi scsi; >> }; >> } QEMU_PACKED; >> @@ -84,9 +103,11 @@ union IplParameterBlock { >> typedef union IplParameterBlock IplParameterBlock; >> >> int s390_ipl_set_loadparm(uint8_t *loadparm); >> +int s390_ipl_pv_check_comp(IplParameterBlock *iplb); >> void s390_ipl_update_diag308(IplParameterBlock *iplb); >> void s390_ipl_prepare_cpu(S390CPU *cpu); >> IplParameterBlock *s390_ipl_get_iplb(void); >> +IplParameterBlock *s390_ipl_get_iplb_secure(void); >> >> enum s390_reset { >> /* default is a reset not triggered by a CPU e.g. issued by QMP */ >> @@ -94,6 +115,7 @@ enum s390_reset { >> S390_RESET_REIPL, >> S390_RESET_MODIFIED_CLEAR, >> S390_RESET_LOAD_NORMAL, >> + S390_RESET_PV, > > I do wonder if that should be called S390_RESET_PV_START I have no strong feelings for the name, whatever floats you boat(s) > >> }; >> void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type); >> void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type); >> @@ -133,6 +155,7 @@ struct S390IPLState { >> /*< private >*/ >> DeviceState parent_obj; >> IplParameterBlock iplb; >> + IplParameterBlock iplb_pbt5; >> QemuIplParameters qipl; >> uint64_t start_addr; >> uint64_t compat_start_addr; >> @@ -140,6 +163,7 @@ struct S390IPLState { >> uint64_t compat_bios_start_addr; >> bool enforce_bios; >> bool iplb_valid; >> + bool iplb_valid_pbt5; >> bool netboot; >> /* reset related properties don't have to be migrated or reset */ >> enum s390_reset reset_type; >> @@ -161,9 +185,11 @@ QEMU_BUILD_BUG_MSG(offsetof(S390IPLState, iplb) & 3, "alignment of iplb wrong"); >> >> #define S390_IPL_TYPE_FCP 0x00 >> #define S390_IPL_TYPE_CCW 0x02 >> +#define S390_IPL_TYPE_PV 0x05 >> #define S390_IPL_TYPE_QEMU_SCSI 0xff >> >> #define S390_IPLB_HEADER_LEN 8 >> +#define S390_IPLB_MIN_PV_LEN 148 >> #define S390_IPLB_MIN_CCW_LEN 200 >> #define S390_IPLB_MIN_FCP_LEN 384 >> #define S390_IPLB_MIN_QEMU_SCSI_LEN 200 >> @@ -185,4 +211,11 @@ static inline bool iplb_valid_fcp(IplParameterBlock *iplb) >> iplb->pbt == S390_IPL_TYPE_FCP; >> } >> >> +static inline bool iplb_valid_se(IplParameterBlock *iplb) > > s/_se/_pv/ ? Or was that intended? Not intended, the rename in the middle of the project took some tolls. > >> +{ >> + return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_PV_LEN && >> + iplb->pbt == S390_IPL_TYPE_PV; >> +} >> + >> + > > Maybe drop one empty line Sure > >> #endif >> diff --git a/target/s390x/diag.c b/target/s390x/diag.c >> index b5aec06d6b..112a6c92e0 100644 >> --- a/target/s390x/diag.c >> +++ b/target/s390x/diag.c > [...] > >
On Fri, 29 Nov 2019 12:18:56 +0100 Janosch Frank <frankja@linux.ibm.com> wrote: > On 11/29/19 11:09 AM, David Hildenbrand wrote: > >> @@ -94,6 +115,7 @@ enum s390_reset { > >> S390_RESET_REIPL, > >> S390_RESET_MODIFIED_CLEAR, > >> S390_RESET_LOAD_NORMAL, > >> + S390_RESET_PV, > > > > I do wonder if that should be called S390_RESET_PV_START > > I have no strong feelings for the name, whatever floats you boat(s) PVY_MC_PVFACE? But seriously speaking, I'd also prefer S390_RESET_PV_START.
On 29/11/2019 10.47, Janosch Frank wrote: [...] > Subcodes 8-10 are not valid in protected mode, we have to do a subcode > 3 and then the 8 and 10 combination for a protected reboot. So if 8-10 are not valid in protected mode... > @@ -59,6 +61,9 @@ int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3) > #define DIAG308_LOAD_NORMAL_DUMP 4 > #define DIAG308_SET 5 > #define DIAG308_STORE 6 > +#define DIAG308_PV_SET 8 > +#define DIAG308_PV_STORE 9 > +#define DIAG308_PV_START 10 > > static int diag308_parm_check(CPUS390XState *env, uint64_t r1, uint64_t addr, > uintptr_t ra, bool write) > @@ -105,6 +110,7 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, uintptr_t ra) > s390_ipl_reset_request(cs, S390_RESET_REIPL); > break; > case DIAG308_SET: > + case DIAG308_PV_SET: ... should you maybe add a check here (and the other cases) to make sure that the guest is currently not running in PV mode? Or is this taken care of by the Ultravisor already? > if (diag308_parm_check(env, r1, addr, ra, false)) { > return; > } > @@ -117,7 +123,8 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, uintptr_t ra) > > cpu_physical_memory_read(addr, iplb, be32_to_cpu(iplb->len)); > > - if (!iplb_valid_ccw(iplb) && !iplb_valid_fcp(iplb)) { > + if (!iplb_valid_ccw(iplb) && !iplb_valid_fcp(iplb) && > + !(iplb_valid_se(iplb) && s390_ipl_pv_check_comp(iplb) >= 0)) { > env->regs[r1 + 1] = DIAG_308_RC_INVALID; > goto out; > } > @@ -128,10 +135,15 @@ out: > g_free(iplb); > return; > case DIAG308_STORE: > + case DIAG308_PV_STORE: > if (diag308_parm_check(env, r1, addr, ra, true)) { > return; > } > - iplb = s390_ipl_get_iplb(); > + if (subcode == DIAG308_PV_STORE) { > + iplb = s390_ipl_get_iplb_secure(); > + } else { > + iplb = s390_ipl_get_iplb(); > + } > if (iplb) { > cpu_physical_memory_write(addr, iplb, be32_to_cpu(iplb->len)); > env->regs[r1 + 1] = DIAG_308_RC_OK; > @@ -139,6 +151,16 @@ out: > env->regs[r1 + 1] = DIAG_308_RC_NO_CONF; > } > return; > + break; Please remove the break. Or the return. But let's not do both. > + case DIAG308_PV_START: > + iplb = s390_ipl_get_iplb_secure(); > + if (!iplb_valid_se(iplb)) { > + env->regs[r1 + 1] = DIAG_308_RC_NO_PV_CONF; > + return; > + } > + > + s390_ipl_reset_request(cs, S390_RESET_PV); > + break; > default: > s390_program_interrupt(env, PGM_SPECIFICATION, ra); > break; > Thomas
On 11/29/19 1:40 PM, Thomas Huth wrote: > On 29/11/2019 10.47, Janosch Frank wrote: > [...] >> Subcodes 8-10 are not valid in protected mode, we have to do a subcode >> 3 and then the 8 and 10 combination for a protected reboot. > > So if 8-10 are not valid in protected mode... > >> @@ -59,6 +61,9 @@ int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3) >> #define DIAG308_LOAD_NORMAL_DUMP 4 >> #define DIAG308_SET 5 >> #define DIAG308_STORE 6 >> +#define DIAG308_PV_SET 8 >> +#define DIAG308_PV_STORE 9 >> +#define DIAG308_PV_START 10 >> >> static int diag308_parm_check(CPUS390XState *env, uint64_t r1, uint64_t addr, >> uintptr_t ra, bool write) >> @@ -105,6 +110,7 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, uintptr_t ra) >> s390_ipl_reset_request(cs, S390_RESET_REIPL); >> break; >> case DIAG308_SET: >> + case DIAG308_PV_SET: > > ... should you maybe add a check here (and the other cases) to make sure > that the guest is currently not running in PV mode? Or is this taken > care of by the Ultravisor already? The Ultravisor takes care of that. > >> if (diag308_parm_check(env, r1, addr, ra, false)) { >> return; >> } >> @@ -117,7 +123,8 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, uintptr_t ra) >> >> cpu_physical_memory_read(addr, iplb, be32_to_cpu(iplb->len)); >> >> - if (!iplb_valid_ccw(iplb) && !iplb_valid_fcp(iplb)) { >> + if (!iplb_valid_ccw(iplb) && !iplb_valid_fcp(iplb) && >> + !(iplb_valid_se(iplb) && s390_ipl_pv_check_comp(iplb) >= 0)) { >> env->regs[r1 + 1] = DIAG_308_RC_INVALID; >> goto out; >> } >> @@ -128,10 +135,15 @@ out: >> g_free(iplb); >> return; >> case DIAG308_STORE: >> + case DIAG308_PV_STORE: >> if (diag308_parm_check(env, r1, addr, ra, true)) { >> return; >> } >> - iplb = s390_ipl_get_iplb(); >> + if (subcode == DIAG308_PV_STORE) { >> + iplb = s390_ipl_get_iplb_secure(); >> + } else { >> + iplb = s390_ipl_get_iplb(); >> + } >> if (iplb) { >> cpu_physical_memory_write(addr, iplb, be32_to_cpu(iplb->len)); >> env->regs[r1 + 1] = DIAG_308_RC_OK; >> @@ -139,6 +151,16 @@ out: >> env->regs[r1 + 1] = DIAG_308_RC_NO_CONF; >> } >> return; >> + break; > > Please remove the break. Or the return. But let's not do both. Right, I forgot to remove that... > >> + case DIAG308_PV_START: >> + iplb = s390_ipl_get_iplb_secure(); >> + if (!iplb_valid_se(iplb)) { >> + env->regs[r1 + 1] = DIAG_308_RC_NO_PV_CONF; >> + return; >> + } >> + >> + s390_ipl_reset_request(cs, S390_RESET_PV); >> + break; >> default: >> s390_program_interrupt(env, PGM_SPECIFICATION, ra); >> break; >> > > Thomas >
On Fri, 29 Nov 2019 15:08:58 +0100 Janosch Frank <frankja@linux.ibm.com> wrote: > On 11/29/19 1:40 PM, Thomas Huth wrote: > > On 29/11/2019 10.47, Janosch Frank wrote: > > [...] > >> Subcodes 8-10 are not valid in protected mode, we have to do a subcode > >> 3 and then the 8 and 10 combination for a protected reboot. > > > > So if 8-10 are not valid in protected mode... > > > >> @@ -59,6 +61,9 @@ int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3) > >> #define DIAG308_LOAD_NORMAL_DUMP 4 > >> #define DIAG308_SET 5 > >> #define DIAG308_STORE 6 > >> +#define DIAG308_PV_SET 8 > >> +#define DIAG308_PV_STORE 9 > >> +#define DIAG308_PV_START 10 > >> > >> static int diag308_parm_check(CPUS390XState *env, uint64_t r1, uint64_t addr, > >> uintptr_t ra, bool write) > >> @@ -105,6 +110,7 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, uintptr_t ra) > >> s390_ipl_reset_request(cs, S390_RESET_REIPL); > >> break; > >> case DIAG308_SET: > >> + case DIAG308_PV_SET: > > > > ... should you maybe add a check here (and the other cases) to make sure > > that the guest is currently not running in PV mode? Or is this taken > > care of by the Ultravisor already? > > The Ultravisor takes care of that. I'm wondering whether we should add some asserts. If the uv is broken, we're hosed anyway; but it might make the code flow more obvious?
diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c index ca544d64c5..a077926f36 100644 --- a/hw/s390x/ipl.c +++ b/hw/s390x/ipl.c @@ -529,15 +529,56 @@ static bool is_virtio_scsi_device(IplParameterBlock *iplb) return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_SCSI); } +int s390_ipl_pv_check_comp(IplParameterBlock *iplb) +{ + int i; + IPLBlockPV *ipib_pv = &iplb->pv; + + if (ipib_pv->num_comp == 0) { + return -EINVAL; + } + + for (i = 0; i < ipib_pv->num_comp; i++) { + + /* Addr must be 4k aligned */ + if (ipib_pv->components[i].addr & ~TARGET_PAGE_MASK) { + return -EINVAL; + } + + /* Tweak prefix is monotonously increasing with each component */ + if (i < ipib_pv->num_comp - 1 && + ipib_pv->components[i].tweak_pref > + ipib_pv->components[i + 1].tweak_pref) { + return -EINVAL; + } + } + return 1; +} + void s390_ipl_update_diag308(IplParameterBlock *iplb) { S390IPLState *ipl = get_ipl_device(); - ipl->iplb = *iplb; - ipl->iplb_valid = true; + if (iplb->pbt == 5) { + ipl->iplb_pbt5 = *iplb; + ipl->iplb_valid_pbt5 = true; + } else { + ipl->iplb = *iplb; + ipl->iplb_valid = true; + } ipl->netboot = is_virtio_net_device(iplb); } +IplParameterBlock *s390_ipl_get_iplb_secure(void) +{ + S390IPLState *ipl = get_ipl_device(); + + if (!ipl->iplb_valid_pbt5) { + return NULL; + } + return &ipl->iplb_pbt5; +} + IplParameterBlock *s390_ipl_get_iplb(void) { S390IPLState *ipl = get_ipl_device(); @@ -552,7 +593,8 @@ void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type) { S390IPLState *ipl = get_ipl_device(); - if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL) { + if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL || + reset_type == S390_RESET_PV) { /* use CPU 0 for full resets */ ipl->reset_cpu_index = 0; } else { diff --git a/hw/s390x/ipl.h b/hw/s390x/ipl.h index d4813105db..7b8a493509 100644 --- a/hw/s390x/ipl.h +++ b/hw/s390x/ipl.h @@ -15,6 +15,24 @@ #include "cpu.h" #include "hw/qdev-core.h" +struct IPLBlockPVComp { + uint64_t tweak_pref; + uint64_t addr; + uint64_t size; +} QEMU_PACKED; +typedef struct IPLBlockPVComp IPLBlockPVComp; + +struct IPLBlockPV { + uint8_t reserved[84]; + uint8_t reserved67[3]; + uint8_t version; + uint32_t num_comp; + uint64_t pv_header_addr; + uint64_t pv_header_len; + struct IPLBlockPVComp components[]; +} QEMU_PACKED; +typedef struct IPLBlockPV IPLBlockPV; + struct IplBlockCcw { uint8_t reserved0[85]; uint8_t ssid; @@ -71,6 +89,7 @@ union IplParameterBlock { union { IplBlockCcw ccw; IplBlockFcp fcp; + IPLBlockPV pv; IplBlockQemuScsi scsi; }; } QEMU_PACKED; @@ -84,9 +103,11 @@ union IplParameterBlock { typedef union IplParameterBlock IplParameterBlock; int s390_ipl_set_loadparm(uint8_t *loadparm); +int s390_ipl_pv_check_comp(IplParameterBlock *iplb); void s390_ipl_update_diag308(IplParameterBlock *iplb); void s390_ipl_prepare_cpu(S390CPU *cpu); IplParameterBlock *s390_ipl_get_iplb(void); +IplParameterBlock *s390_ipl_get_iplb_secure(void); enum s390_reset { /* default is a reset not triggered by a CPU e.g. issued by QMP */ @@ -94,6 +115,7 @@ enum s390_reset { S390_RESET_REIPL, S390_RESET_MODIFIED_CLEAR, S390_RESET_LOAD_NORMAL, + S390_RESET_PV, }; void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type); void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type); @@ -133,6 +155,7 @@ struct S390IPLState { /*< private >*/ DeviceState parent_obj; IplParameterBlock iplb; + IplParameterBlock iplb_pbt5; QemuIplParameters qipl; uint64_t start_addr; uint64_t compat_start_addr; @@ -140,6 +163,7 @@ struct S390IPLState { uint64_t compat_bios_start_addr; bool enforce_bios; bool iplb_valid; + bool iplb_valid_pbt5; bool netboot; /* reset related properties don't have to be migrated or reset */ enum s390_reset reset_type; @@ -161,9 +185,11 @@ QEMU_BUILD_BUG_MSG(offsetof(S390IPLState, iplb) & 3, "alignment of iplb wrong"); #define S390_IPL_TYPE_FCP 0x00 #define S390_IPL_TYPE_CCW 0x02 +#define S390_IPL_TYPE_PV 0x05 #define S390_IPL_TYPE_QEMU_SCSI 0xff #define S390_IPLB_HEADER_LEN 8 +#define S390_IPLB_MIN_PV_LEN 148 #define S390_IPLB_MIN_CCW_LEN 200 #define S390_IPLB_MIN_FCP_LEN 384 #define S390_IPLB_MIN_QEMU_SCSI_LEN 200 @@ -185,4 +211,11 @@ static inline bool iplb_valid_fcp(IplParameterBlock *iplb) iplb->pbt == S390_IPL_TYPE_FCP; } +static inline bool iplb_valid_se(IplParameterBlock *iplb) +{ + return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_PV_LEN && + iplb->pbt == S390_IPL_TYPE_PV; +} + + #endif diff --git a/target/s390x/diag.c b/target/s390x/diag.c index b5aec06d6b..112a6c92e0 100644 --- a/target/s390x/diag.c +++ b/target/s390x/diag.c @@ -52,6 +52,8 @@ int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3) #define DIAG_308_RC_OK 0x0001 #define DIAG_308_RC_NO_CONF 0x0102 #define DIAG_308_RC_INVALID 0x0402 +#define DIAG_308_RC_NO_PV_CONF 0x0a02 +#define DIAG_308_RC_INV_FOR_PV 0x0b02 #define DIAG308_RESET_MOD_CLR 0 #define DIAG308_RESET_LOAD_NORM 1 @@ -59,6 +61,9 @@ int handle_diag_288(CPUS390XState *env, uint64_t r1, uint64_t r3) #define DIAG308_LOAD_NORMAL_DUMP 4 #define DIAG308_SET 5 #define DIAG308_STORE 6 +#define DIAG308_PV_SET 8 +#define DIAG308_PV_STORE 9 +#define DIAG308_PV_START 10 static int diag308_parm_check(CPUS390XState *env, uint64_t r1, uint64_t addr, uintptr_t ra, bool write) @@ -105,6 +110,7 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, uintptr_t ra) s390_ipl_reset_request(cs, S390_RESET_REIPL); break; case DIAG308_SET: + case DIAG308_PV_SET: if (diag308_parm_check(env, r1, addr, ra, false)) { return; } @@ -117,7 +123,8 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, uintptr_t ra) cpu_physical_memory_read(addr, iplb, be32_to_cpu(iplb->len)); - if (!iplb_valid_ccw(iplb) && !iplb_valid_fcp(iplb)) { + if (!iplb_valid_ccw(iplb) && !iplb_valid_fcp(iplb) && + !(iplb_valid_se(iplb) && s390_ipl_pv_check_comp(iplb) >= 0)) { env->regs[r1 + 1] = DIAG_308_RC_INVALID; goto out; } @@ -128,10 +135,15 @@ out: g_free(iplb); return; case DIAG308_STORE: + case DIAG308_PV_STORE: if (diag308_parm_check(env, r1, addr, ra, true)) { return; } - iplb = s390_ipl_get_iplb(); + if (subcode == DIAG308_PV_STORE) { + iplb = s390_ipl_get_iplb_secure(); + } else { + iplb = s390_ipl_get_iplb(); + } if (iplb) { cpu_physical_memory_write(addr, iplb, be32_to_cpu(iplb->len)); env->regs[r1 + 1] = DIAG_308_RC_OK; @@ -139,6 +151,16 @@ out: env->regs[r1 + 1] = DIAG_308_RC_NO_CONF; } return; + break; + case DIAG308_PV_START: + iplb = s390_ipl_get_iplb_secure(); + if (!iplb_valid_se(iplb)) { + env->regs[r1 + 1] = DIAG_308_RC_NO_PV_CONF; + return; + } + + s390_ipl_reset_request(cs, S390_RESET_PV); + break; default: s390_program_interrupt(env, PGM_SPECIFICATION, ra); break;
For diag308 subcodes 8 - 10 we have a new ipib of type 5. The ipib holds the address and length of the secure execution header, as well as a list of guest components. Each component is a block of memory, for example kernel or initrd, which needs to be decrypted by the Ultravisor in order to run a protected VM. The secure execution header instructs the Ultravisor on how to handle the protected VM and its components. Subcodes 8 and 9 are similiar to 5 and 6 and subcode 10 will finally start the protected guest. Subcodes 8-10 are not valid in protected mode, we have to do a subcode 3 and then the 8 and 10 combination for a protected reboot. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> --- hw/s390x/ipl.c | 48 ++++++++++++++++++++++++++++++++++++++++++--- hw/s390x/ipl.h | 33 +++++++++++++++++++++++++++++++ target/s390x/diag.c | 26 ++++++++++++++++++++++-- 3 files changed, 102 insertions(+), 5 deletions(-)