From 753ca06f4706cd6e57750a606afb08c5c5299643 Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Mon, 17 Oct 2022 08:38:21 +0000 Subject: s390x: Add KVM PV dump interface MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Let's add a few bits of code which hide the new KVM PV dump API from us via new functions. Signed-off-by: Janosch Frank Reviewed-by: Janis Schoetterl-Glausch Reviewed-by: Steffen Eiden [ Marc-André: fix up for compilation issue ] Signed-off-by: Marc-André Lureau Message-Id: <20221017083822.43118-10-frankja@linux.ibm.com> --- hw/s390x/pv.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) (limited to 'hw/s390x') diff --git a/hw/s390x/pv.c b/hw/s390x/pv.c index 4c012f2..728ba24 100644 --- a/hw/s390x/pv.c +++ b/hw/s390x/pv.c @@ -175,6 +175,57 @@ bool kvm_s390_pv_info_basic_valid(void) return info_valid; } +static int s390_pv_dump_cmd(uint64_t subcmd, uint64_t uaddr, uint64_t gaddr, + uint64_t len) +{ + struct kvm_s390_pv_dmp dmp = { + .subcmd = subcmd, + .buff_addr = uaddr, + .buff_len = len, + .gaddr = gaddr, + }; + int ret; + + ret = s390_pv_cmd(KVM_PV_DUMP, (void *)&dmp); + if (ret) { + error_report("KVM DUMP command %ld failed", subcmd); + } + return ret; +} + +int kvm_s390_dump_cpu(S390CPU *cpu, void *buff) +{ + struct kvm_s390_pv_dmp dmp = { + .subcmd = KVM_PV_DUMP_CPU, + .buff_addr = (uint64_t)buff, + .gaddr = 0, + .buff_len = info_dump.dump_cpu_buffer_len, + }; + struct kvm_pv_cmd pv = { + .cmd = KVM_PV_DUMP, + .data = (uint64_t)&dmp, + }; + + return kvm_vcpu_ioctl(CPU(cpu), KVM_S390_PV_CPU_COMMAND, &pv); +} + +int kvm_s390_dump_init(void) +{ + return s390_pv_dump_cmd(KVM_PV_DUMP_INIT, 0, 0, 0); +} + +int kvm_s390_dump_mem_state(uint64_t gaddr, size_t len, void *dest) +{ + return s390_pv_dump_cmd(KVM_PV_DUMP_CONFIG_STOR_STATE, (uint64_t)dest, + gaddr, len); +} + +int kvm_s390_dump_completion_data(void *buff) +{ + return s390_pv_dump_cmd(KVM_PV_DUMP_COMPLETE, (uint64_t)buff, 0, + info_dump.dump_config_finalize_len); +} + #define TYPE_S390_PV_GUEST "s390-pv-guest" OBJECT_DECLARE_SIMPLE_TYPE(S390PVGuest, S390_PV_GUEST) -- cgit v1.1