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Diffstat (limited to 'arch/x86/include/asm/xen/hypercall.h')
-rw-r--r--arch/x86/include/asm/xen/hypercall.h83
1 files changed, 64 insertions, 19 deletions
diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h
index a3c28ae4025..ca08a27b90b 100644
--- a/arch/x86/include/asm/xen/hypercall.h
+++ b/arch/x86/include/asm/xen/hypercall.h
@@ -39,12 +39,16 @@
#include <linux/string.h>
#include <linux/types.h>
+#include <trace/events/xen.h>
+
#include <asm/page.h>
#include <asm/pgtable.h>
#include <xen/interface/xen.h>
#include <xen/interface/sched.h>
#include <xen/interface/physdev.h>
+#include <xen/interface/platform.h>
+#include <xen/interface/xen-mca.h>
/*
* The hypercall asms have to meet several constraints:
@@ -287,7 +291,7 @@ HYPERVISOR_fpu_taskswitch(int set)
static inline int
HYPERVISOR_sched_op(int cmd, void *arg)
{
- return _hypercall2(int, sched_op_new, cmd, arg);
+ return _hypercall2(int, sched_op, cmd, arg);
}
static inline long
@@ -299,6 +303,20 @@ HYPERVISOR_set_timer_op(u64 timeout)
}
static inline int
+HYPERVISOR_mca(struct xen_mc *mc_op)
+{
+ mc_op->interface_version = XEN_MCA_INTERFACE_VERSION;
+ return _hypercall1(int, mca, mc_op);
+}
+
+static inline int
+HYPERVISOR_dom0_op(struct xen_platform_op *platform_op)
+{
+ platform_op->interface_version = XENPF_INTERFACE_VERSION;
+ return _hypercall1(int, dom0_op, platform_op);
+}
+
+static inline int
HYPERVISOR_set_debugreg(int reg, unsigned long value)
{
return _hypercall2(int, set_debugreg, reg, value);
@@ -325,7 +343,7 @@ HYPERVISOR_memory_op(unsigned int cmd, void *arg)
}
static inline int
-HYPERVISOR_multicall(void *call_list, int nr_calls)
+HYPERVISOR_multicall(void *call_list, uint32_t nr_calls)
{
return _hypercall2(int, multicall, call_list, nr_calls);
}
@@ -341,18 +359,14 @@ HYPERVISOR_update_va_mapping(unsigned long va, pte_t new_val,
return _hypercall4(int, update_va_mapping, va,
new_val.pte, new_val.pte >> 32, flags);
}
+extern int __must_check xen_event_channel_op_compat(int, void *);
static inline int
HYPERVISOR_event_channel_op(int cmd, void *arg)
{
int rc = _hypercall2(int, event_channel_op, cmd, arg);
- if (unlikely(rc == -ENOSYS)) {
- struct evtchn_op op;
- op.cmd = cmd;
- memcpy(&op.u, arg, sizeof(op.u));
- rc = _hypercall1(int, event_channel_op_compat, &op);
- memcpy(arg, &op.u, sizeof(op.u));
- }
+ if (unlikely(rc == -ENOSYS))
+ rc = xen_event_channel_op_compat(cmd, arg);
return rc;
}
@@ -368,17 +382,14 @@ HYPERVISOR_console_io(int cmd, int count, char *str)
return _hypercall3(int, console_io, cmd, count, str);
}
+extern int __must_check xen_physdev_op_compat(int, void *);
+
static inline int
HYPERVISOR_physdev_op(int cmd, void *arg)
{
int rc = _hypercall2(int, physdev_op, cmd, arg);
- if (unlikely(rc == -ENOSYS)) {
- struct physdev_op op;
- op.cmd = cmd;
- memcpy(&op.u, arg, sizeof(op.u));
- rc = _hypercall1(int, physdev_op_compat, &op);
- memcpy(arg, &op.u, sizeof(op.u));
- }
+ if (unlikely(rc == -ENOSYS))
+ rc = xen_physdev_op_compat(cmd, arg);
return rc;
}
@@ -422,10 +433,17 @@ HYPERVISOR_set_segment_base(int reg, unsigned long value)
#endif
static inline int
-HYPERVISOR_suspend(unsigned long srec)
+HYPERVISOR_suspend(unsigned long start_info_mfn)
{
- return _hypercall3(int, sched_op, SCHEDOP_shutdown,
- SHUTDOWN_suspend, srec);
+ struct sched_shutdown r = { .reason = SHUTDOWN_suspend };
+
+ /*
+ * For a PV guest the tools require that the start_info mfn be
+ * present in rdx/edx when the hypercall is made. Per the
+ * hypercall calling convention this is the third hypercall
+ * argument, which is start_info_mfn here.
+ */
+ return _hypercall3(int, sched_op, SCHEDOP_shutdown, &r, start_info_mfn);
}
static inline int
@@ -440,11 +458,20 @@ HYPERVISOR_hvm_op(int op, void *arg)
return _hypercall2(unsigned long, hvm_op, op, arg);
}
+static inline int
+HYPERVISOR_tmem_op(
+ struct tmem_op *op)
+{
+ return _hypercall1(int, tmem_op, op);
+}
+
static inline void
MULTI_fpu_taskswitch(struct multicall_entry *mcl, int set)
{
mcl->op = __HYPERVISOR_fpu_taskswitch;
mcl->args[0] = set;
+
+ trace_xen_mc_entry(mcl, 1);
}
static inline void
@@ -461,6 +488,8 @@ MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
mcl->args[2] = new_val.pte >> 32;
mcl->args[3] = flags;
}
+
+ trace_xen_mc_entry(mcl, sizeof(new_val) == sizeof(long) ? 3 : 4);
}
static inline void
@@ -471,6 +500,8 @@ MULTI_grant_table_op(struct multicall_entry *mcl, unsigned int cmd,
mcl->args[0] = cmd;
mcl->args[1] = (unsigned long)uop;
mcl->args[2] = count;
+
+ trace_xen_mc_entry(mcl, 3);
}
static inline void
@@ -490,6 +521,8 @@ MULTI_update_va_mapping_otherdomain(struct multicall_entry *mcl, unsigned long v
mcl->args[3] = flags;
mcl->args[4] = domid;
}
+
+ trace_xen_mc_entry(mcl, sizeof(new_val) == sizeof(long) ? 4 : 5);
}
static inline void
@@ -506,6 +539,8 @@ MULTI_update_descriptor(struct multicall_entry *mcl, u64 maddr,
mcl->args[2] = desc.a;
mcl->args[3] = desc.b;
}
+
+ trace_xen_mc_entry(mcl, sizeof(maddr) == sizeof(long) ? 2 : 4);
}
static inline void
@@ -514,6 +549,8 @@ MULTI_memory_op(struct multicall_entry *mcl, unsigned int cmd, void *arg)
mcl->op = __HYPERVISOR_memory_op;
mcl->args[0] = cmd;
mcl->args[1] = (unsigned long)arg;
+
+ trace_xen_mc_entry(mcl, 2);
}
static inline void
@@ -525,6 +562,8 @@ MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
mcl->args[1] = count;
mcl->args[2] = (unsigned long)success_count;
mcl->args[3] = domid;
+
+ trace_xen_mc_entry(mcl, 4);
}
static inline void
@@ -536,6 +575,8 @@ MULTI_mmuext_op(struct multicall_entry *mcl, struct mmuext_op *op, int count,
mcl->args[1] = count;
mcl->args[2] = (unsigned long)success_count;
mcl->args[3] = domid;
+
+ trace_xen_mc_entry(mcl, 4);
}
static inline void
@@ -544,6 +585,8 @@ MULTI_set_gdt(struct multicall_entry *mcl, unsigned long *frames, int entries)
mcl->op = __HYPERVISOR_set_gdt;
mcl->args[0] = (unsigned long)frames;
mcl->args[1] = entries;
+
+ trace_xen_mc_entry(mcl, 2);
}
static inline void
@@ -553,6 +596,8 @@ MULTI_stack_switch(struct multicall_entry *mcl,
mcl->op = __HYPERVISOR_stack_switch;
mcl->args[0] = ss;
mcl->args[1] = esp;
+
+ trace_xen_mc_entry(mcl, 2);
}
#endif /* _ASM_X86_XEN_HYPERCALL_H */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 13:25:22 +0000