* [PATCH 2/4] xen: allow pv-only hypercalls only with CONFIG_XEN_PV
2021-10-28 8:12 [PATCH 0/4] xen: do some cleanup Juergen Gross
@ 2021-10-28 8:12 ` Juergen Gross
2021-11-01 19:15 ` [PATCH 0/4] xen: do some cleanup Boris Ostrovsky
1 sibling, 0 replies; 4+ messages in thread
From: Juergen Gross @ 2021-10-28 8:12 UTC (permalink / raw)
To: xen-devel, x86, linux-kernel
Cc: Juergen Gross, Stefano Stabellini, Russell King, Catalin Marinas,
Will Deacon, Boris Ostrovsky, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, Dave Hansen, H. Peter Anvin, linux-arm-kernel
Put the definitions of the hypercalls usable only by pv guests inside
CONFIG_XEN_PV sections.
On Arm two dummy functions related to pv hypercalls can be removed.
While at it remove the no longer supported tmem hypercall definition.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
arch/arm/xen/enlighten.c | 1 -
arch/arm/xen/hypercall.S | 1 -
arch/arm64/xen/hypercall.S | 1 -
arch/x86/include/asm/xen/hypercall.h | 211 +++++++++++++--------------
include/xen/arm/hypercall.h | 15 --
5 files changed, 102 insertions(+), 127 deletions(-)
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 7f1c106b746f..7619fbffcea2 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -442,7 +442,6 @@ EXPORT_SYMBOL_GPL(HYPERVISOR_hvm_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_memory_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_physdev_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_vcpu_op);
-EXPORT_SYMBOL_GPL(HYPERVISOR_tmem_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_platform_op_raw);
EXPORT_SYMBOL_GPL(HYPERVISOR_multicall);
EXPORT_SYMBOL_GPL(HYPERVISOR_vm_assist);
diff --git a/arch/arm/xen/hypercall.S b/arch/arm/xen/hypercall.S
index b11bba542fac..f794dac9859a 100644
--- a/arch/arm/xen/hypercall.S
+++ b/arch/arm/xen/hypercall.S
@@ -88,7 +88,6 @@ HYPERCALL2(hvm_op);
HYPERCALL2(memory_op);
HYPERCALL2(physdev_op);
HYPERCALL3(vcpu_op);
-HYPERCALL1(tmem_op);
HYPERCALL1(platform_op_raw);
HYPERCALL2(multicall);
HYPERCALL2(vm_assist);
diff --git a/arch/arm64/xen/hypercall.S b/arch/arm64/xen/hypercall.S
index 5b09aca55108..9d01361696a1 100644
--- a/arch/arm64/xen/hypercall.S
+++ b/arch/arm64/xen/hypercall.S
@@ -80,7 +80,6 @@ HYPERCALL2(hvm_op);
HYPERCALL2(memory_op);
HYPERCALL2(physdev_op);
HYPERCALL3(vcpu_op);
-HYPERCALL1(tmem_op);
HYPERCALL1(platform_op_raw);
HYPERCALL2(multicall);
HYPERCALL2(vm_assist);
diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h
index 02156b76aa92..b4832ec1a047 100644
--- a/arch/x86/include/asm/xen/hypercall.h
+++ b/arch/x86/include/asm/xen/hypercall.h
@@ -248,6 +248,7 @@ privcmd_call(unsigned int call,
return res;
}
+#ifdef CONFIG_XEN_PV
static inline int
HYPERVISOR_set_trap_table(struct trap_info *table)
{
@@ -280,6 +281,107 @@ HYPERVISOR_callback_op(int cmd, void *arg)
return _hypercall2(int, callback_op, cmd, arg);
}
+static inline int
+HYPERVISOR_set_debugreg(int reg, unsigned long value)
+{
+ return _hypercall2(int, set_debugreg, reg, value);
+}
+
+static inline unsigned long
+HYPERVISOR_get_debugreg(int reg)
+{
+ return _hypercall1(unsigned long, get_debugreg, reg);
+}
+
+static inline int
+HYPERVISOR_update_descriptor(u64 ma, u64 desc)
+{
+ return _hypercall2(int, update_descriptor, ma, desc);
+}
+
+static inline int
+HYPERVISOR_update_va_mapping(unsigned long va, pte_t new_val,
+ unsigned long flags)
+{
+ return _hypercall3(int, update_va_mapping, va, new_val.pte, flags);
+}
+
+static inline int
+HYPERVISOR_set_segment_base(int reg, unsigned long value)
+{
+ return _hypercall2(int, set_segment_base, reg, value);
+}
+
+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
+MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
+ pte_t new_val, unsigned long flags)
+{
+ mcl->op = __HYPERVISOR_update_va_mapping;
+ mcl->args[0] = va;
+ mcl->args[1] = new_val.pte;
+ mcl->args[2] = flags;
+
+ trace_xen_mc_entry(mcl, 3);
+}
+
+static inline void
+MULTI_update_descriptor(struct multicall_entry *mcl, u64 maddr,
+ struct desc_struct desc)
+{
+ mcl->op = __HYPERVISOR_update_descriptor;
+ mcl->args[0] = maddr;
+ mcl->args[1] = *(unsigned long *)&desc;
+
+ trace_xen_mc_entry(mcl, 2);
+}
+
+static inline void
+MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
+ int count, int *success_count, domid_t domid)
+{
+ mcl->op = __HYPERVISOR_mmu_update;
+ mcl->args[0] = (unsigned long)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
+MULTI_mmuext_op(struct multicall_entry *mcl, struct mmuext_op *op, int count,
+ int *success_count, domid_t domid)
+{
+ mcl->op = __HYPERVISOR_mmuext_op;
+ mcl->args[0] = (unsigned long)op;
+ mcl->args[1] = count;
+ mcl->args[2] = (unsigned long)success_count;
+ mcl->args[3] = domid;
+
+ trace_xen_mc_entry(mcl, 4);
+}
+
+static inline void
+MULTI_stack_switch(struct multicall_entry *mcl,
+ unsigned long ss, unsigned long esp)
+{
+ mcl->op = __HYPERVISOR_stack_switch;
+ mcl->args[0] = ss;
+ mcl->args[1] = esp;
+
+ trace_xen_mc_entry(mcl, 2);
+}
+#endif
+
static inline int
HYPERVISOR_sched_op(int cmd, void *arg)
{
@@ -308,24 +410,6 @@ HYPERVISOR_platform_op(struct xen_platform_op *op)
return _hypercall1(int, platform_op, op);
}
-static inline int
-HYPERVISOR_set_debugreg(int reg, unsigned long value)
-{
- return _hypercall2(int, set_debugreg, reg, value);
-}
-
-static inline unsigned long
-HYPERVISOR_get_debugreg(int reg)
-{
- return _hypercall1(unsigned long, get_debugreg, reg);
-}
-
-static inline int
-HYPERVISOR_update_descriptor(u64 ma, u64 desc)
-{
- return _hypercall2(int, update_descriptor, ma, desc);
-}
-
static inline long
HYPERVISOR_memory_op(unsigned int cmd, void *arg)
{
@@ -338,13 +422,6 @@ HYPERVISOR_multicall(void *call_list, uint32_t nr_calls)
return _hypercall2(int, multicall, call_list, nr_calls);
}
-static inline int
-HYPERVISOR_update_va_mapping(unsigned long va, pte_t new_val,
- unsigned long flags)
-{
- return _hypercall3(int, update_va_mapping, va, new_val.pte, flags);
-}
-
static inline int
HYPERVISOR_event_channel_op(int cmd, void *arg)
{
@@ -387,14 +464,6 @@ HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args)
return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args);
}
-#ifdef CONFIG_X86_64
-static inline int
-HYPERVISOR_set_segment_base(int reg, unsigned long value)
-{
- return _hypercall2(int, set_segment_base, reg, value);
-}
-#endif
-
static inline int
HYPERVISOR_suspend(unsigned long start_info_mfn)
{
@@ -415,13 +484,6 @@ 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 int
HYPERVISOR_xenpmu_op(unsigned int op, void *arg)
{
@@ -439,73 +501,4 @@ HYPERVISOR_dm_op(
return ret;
}
-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
-MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
- pte_t new_val, unsigned long flags)
-{
- mcl->op = __HYPERVISOR_update_va_mapping;
- mcl->args[0] = va;
- mcl->args[1] = new_val.pte;
- mcl->args[2] = flags;
-
- trace_xen_mc_entry(mcl, 3);
-}
-
-static inline void
-MULTI_update_descriptor(struct multicall_entry *mcl, u64 maddr,
- struct desc_struct desc)
-{
- mcl->op = __HYPERVISOR_update_descriptor;
- mcl->args[0] = maddr;
- mcl->args[1] = *(unsigned long *)&desc;
-
- trace_xen_mc_entry(mcl, 2);
-}
-
-static inline void
-MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
- int count, int *success_count, domid_t domid)
-{
- mcl->op = __HYPERVISOR_mmu_update;
- mcl->args[0] = (unsigned long)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
-MULTI_mmuext_op(struct multicall_entry *mcl, struct mmuext_op *op, int count,
- int *success_count, domid_t domid)
-{
- mcl->op = __HYPERVISOR_mmuext_op;
- mcl->args[0] = (unsigned long)op;
- mcl->args[1] = count;
- mcl->args[2] = (unsigned long)success_count;
- mcl->args[3] = domid;
-
- trace_xen_mc_entry(mcl, 4);
-}
-
-static inline void
-MULTI_stack_switch(struct multicall_entry *mcl,
- unsigned long ss, unsigned long esp)
-{
- 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 */
diff --git a/include/xen/arm/hypercall.h b/include/xen/arm/hypercall.h
index b40485e54d80..9d7dd1c65a21 100644
--- a/include/xen/arm/hypercall.h
+++ b/include/xen/arm/hypercall.h
@@ -53,7 +53,6 @@ unsigned long HYPERVISOR_hvm_op(int op, void *arg);
int HYPERVISOR_memory_op(unsigned int cmd, void *arg);
int HYPERVISOR_physdev_op(int cmd, void *arg);
int HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args);
-int HYPERVISOR_tmem_op(void *arg);
int HYPERVISOR_vm_assist(unsigned int cmd, unsigned int type);
int HYPERVISOR_dm_op(domid_t domid, unsigned int nr_bufs,
struct xen_dm_op_buf *bufs);
@@ -74,18 +73,4 @@ HYPERVISOR_suspend(unsigned long start_info_mfn)
return HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
}
-static inline void
-MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
- unsigned int new_val, unsigned long flags)
-{
- BUG();
-}
-
-static inline void
-MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
- int count, int *success_count, domid_t domid)
-{
- BUG();
-}
-
#endif /* _ASM_ARM_XEN_HYPERCALL_H */
--
2.26.2
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