* [PATCH 1/2] x86/xen: make some functions static
2024-07-10 9:37 [PATCH 0/2] x86/xen: cleanup of xen private headers Juergen Gross
@ 2024-07-10 9:37 ` Juergen Gross
2024-07-10 9:37 ` [PATCH 2/2] x86/xen: eliminate some private header files Juergen Gross
2024-07-11 13:33 ` [PATCH 0/2] x86/xen: cleanup of xen private headers boris.ostrovsky
2 siblings, 0 replies; 4+ messages in thread
From: Juergen Gross @ 2024-07-10 9:37 UTC (permalink / raw)
To: linux-kernel, x86
Cc: Juergen Gross, Boris Ostrovsky, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, Dave Hansen, H. Peter Anvin, xen-devel
Some functions and variables in arch/x86/xen are used locally only,
make them static.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
arch/x86/xen/mmu.h | 4 ----
arch/x86/xen/mmu_pv.c | 11 ++++++-----
arch/x86/xen/xen-ops.h | 1 -
3 files changed, 6 insertions(+), 10 deletions(-)
diff --git a/arch/x86/xen/mmu.h b/arch/x86/xen/mmu.h
index 6e4c6bd62203..11fa577af6b4 100644
--- a/arch/x86/xen/mmu.h
+++ b/arch/x86/xen/mmu.h
@@ -17,10 +17,6 @@ bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn);
void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
-pte_t xen_ptep_modify_prot_start(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep);
-void xen_ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr,
- pte_t *ptep, pte_t pte);
-
unsigned long xen_read_cr2_direct(void);
extern void xen_init_mmu_ops(void);
diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c
index 54e0d311dcc9..8924129e284c 100644
--- a/arch/x86/xen/mmu_pv.c
+++ b/arch/x86/xen/mmu_pv.c
@@ -128,7 +128,7 @@ static DEFINE_SPINLOCK(xen_reservation_lock);
* looking at another vcpu's cr3 value, it should use this variable.
*/
DEFINE_PER_CPU(unsigned long, xen_cr3); /* cr3 stored as physaddr */
-DEFINE_PER_CPU(unsigned long, xen_current_cr3); /* actual vcpu cr3 */
+static DEFINE_PER_CPU(unsigned long, xen_current_cr3); /* actual vcpu cr3 */
static phys_addr_t xen_pt_base, xen_pt_size __initdata;
@@ -305,16 +305,17 @@ static void xen_set_pte(pte_t *ptep, pte_t pteval)
__xen_set_pte(ptep, pteval);
}
-pte_t xen_ptep_modify_prot_start(struct vm_area_struct *vma,
- unsigned long addr, pte_t *ptep)
+static pte_t xen_ptep_modify_prot_start(struct vm_area_struct *vma,
+ unsigned long addr, pte_t *ptep)
{
/* Just return the pte as-is. We preserve the bits on commit */
trace_xen_mmu_ptep_modify_prot_start(vma->vm_mm, addr, ptep, *ptep);
return *ptep;
}
-void xen_ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr,
- pte_t *ptep, pte_t pte)
+static void xen_ptep_modify_prot_commit(struct vm_area_struct *vma,
+ unsigned long addr,
+ pte_t *ptep, pte_t pte)
{
struct mmu_update u;
diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
index 79cf93f2c92f..9f29229e25b8 100644
--- a/arch/x86/xen/xen-ops.h
+++ b/arch/x86/xen/xen-ops.h
@@ -23,7 +23,6 @@ void xen_copy_trap_info(struct trap_info *traps);
DECLARE_PER_CPU_ALIGNED(struct vcpu_info, xen_vcpu_info);
DECLARE_PER_CPU(unsigned long, xen_cr3);
-DECLARE_PER_CPU(unsigned long, xen_current_cr3);
extern struct start_info *xen_start_info;
extern struct shared_info xen_dummy_shared_info;
--
2.43.0
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH 2/2] x86/xen: eliminate some private header files
2024-07-10 9:37 [PATCH 0/2] x86/xen: cleanup of xen private headers Juergen Gross
2024-07-10 9:37 ` [PATCH 1/2] x86/xen: make some functions static Juergen Gross
@ 2024-07-10 9:37 ` Juergen Gross
2024-07-11 13:33 ` [PATCH 0/2] x86/xen: cleanup of xen private headers boris.ostrovsky
2 siblings, 0 replies; 4+ messages in thread
From: Juergen Gross @ 2024-07-10 9:37 UTC (permalink / raw)
To: linux-kernel, x86
Cc: Juergen Gross, Boris Ostrovsky, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, Dave Hansen, H. Peter Anvin, Stefano Stabellini,
Oleksandr Tyshchenko, xen-devel
Under arch/x86/xen there is one large private header file xen-ops.h
containing most of the Xen-private x86 related declarations, and then
there are several small headers with a handful of declarations each.
Merge the small headers into xen-ops.h.
While doing that, move the declaration of xen_fifo_events from
xen-ops.h into include/xen/events.h where it should have been from the
beginning.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
arch/x86/xen/apic.c | 2 -
arch/x86/xen/debugfs.c | 2 +-
arch/x86/xen/debugfs.h | 7 --
arch/x86/xen/enlighten.c | 2 -
arch/x86/xen/enlighten_hvm.c | 2 -
arch/x86/xen/enlighten_pv.c | 4 -
arch/x86/xen/mmu.c | 3 +-
arch/x86/xen/mmu.h | 24 ------
arch/x86/xen/mmu_hvm.c | 2 +-
arch/x86/xen/mmu_pv.c | 4 +-
arch/x86/xen/multicalls.c | 3 +-
arch/x86/xen/multicalls.h | 69 ----------------
arch/x86/xen/p2m.c | 2 -
arch/x86/xen/pmu.c | 1 -
arch/x86/xen/pmu.h | 22 ------
arch/x86/xen/setup.c | 1 -
arch/x86/xen/smp.c | 1 -
arch/x86/xen/smp.h | 51 ------------
arch/x86/xen/smp_hvm.c | 2 -
arch/x86/xen/smp_pv.c | 3 -
arch/x86/xen/suspend.c | 2 -
arch/x86/xen/xen-ops.h | 147 ++++++++++++++++++++++++++++++++++-
include/xen/events.h | 2 +
23 files changed, 152 insertions(+), 206 deletions(-)
delete mode 100644 arch/x86/xen/debugfs.h
delete mode 100644 arch/x86/xen/mmu.h
delete mode 100644 arch/x86/xen/multicalls.h
delete mode 100644 arch/x86/xen/pmu.h
delete mode 100644 arch/x86/xen/smp.h
diff --git a/arch/x86/xen/apic.c b/arch/x86/xen/apic.c
index 8b045dd25196..bb0f3f368446 100644
--- a/arch/x86/xen/apic.c
+++ b/arch/x86/xen/apic.c
@@ -10,8 +10,6 @@
#include <xen/xen.h>
#include <xen/interface/physdev.h>
#include "xen-ops.h"
-#include "pmu.h"
-#include "smp.h"
static unsigned int xen_io_apic_read(unsigned apic, unsigned reg)
{
diff --git a/arch/x86/xen/debugfs.c b/arch/x86/xen/debugfs.c
index 532410998684..b8c9f2a7d9b6 100644
--- a/arch/x86/xen/debugfs.c
+++ b/arch/x86/xen/debugfs.c
@@ -3,7 +3,7 @@
#include <linux/debugfs.h>
#include <linux/slab.h>
-#include "debugfs.h"
+#include "xen-ops.h"
static struct dentry *d_xen_debug;
diff --git a/arch/x86/xen/debugfs.h b/arch/x86/xen/debugfs.h
deleted file mode 100644
index 6b813ad1091c..000000000000
--- a/arch/x86/xen/debugfs.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _XEN_DEBUGFS_H
-#define _XEN_DEBUGFS_H
-
-struct dentry * __init xen_init_debugfs(void);
-
-#endif /* _XEN_DEBUGFS_H */
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 0305485edcd3..84e5adbd0925 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -20,8 +20,6 @@
#include <asm/setup.h>
#include "xen-ops.h"
-#include "smp.h"
-#include "pmu.h"
EXPORT_SYMBOL_GPL(hypercall_page);
diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c
index c001a2296582..24d2957a4726 100644
--- a/arch/x86/xen/enlighten_hvm.c
+++ b/arch/x86/xen/enlighten_hvm.c
@@ -28,8 +28,6 @@
#include <asm/xen/page.h>
#include "xen-ops.h"
-#include "mmu.h"
-#include "smp.h"
static unsigned long shared_info_pfn;
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
index 9ba53814ed6a..2c12ae42dc8b 100644
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -85,10 +85,6 @@
#endif
#include "xen-ops.h"
-#include "mmu.h"
-#include "smp.h"
-#include "multicalls.h"
-#include "pmu.h"
#include "../kernel/cpu/cpu.h" /* get_cpu_cap() */
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 60e9c37fd79f..c4c479373249 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -5,8 +5,7 @@
#include <asm/xen/hypercall.h>
#include <xen/interface/memory.h>
-#include "multicalls.h"
-#include "mmu.h"
+#include "xen-ops.h"
unsigned long arbitrary_virt_to_mfn(void *vaddr)
{
diff --git a/arch/x86/xen/mmu.h b/arch/x86/xen/mmu.h
deleted file mode 100644
index 11fa577af6b4..000000000000
--- a/arch/x86/xen/mmu.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _XEN_MMU_H
-
-#include <linux/linkage.h>
-#include <asm/page.h>
-
-enum pt_level {
- PT_PGD,
- PT_P4D,
- PT_PUD,
- PT_PMD,
- PT_PTE
-};
-
-
-bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn);
-
-void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
-
-unsigned long xen_read_cr2_direct(void);
-
-extern void xen_init_mmu_ops(void);
-extern void xen_hvm_init_mmu_ops(void);
-#endif /* _XEN_MMU_H */
diff --git a/arch/x86/xen/mmu_hvm.c b/arch/x86/xen/mmu_hvm.c
index 509bdee3ab90..337955652202 100644
--- a/arch/x86/xen/mmu_hvm.c
+++ b/arch/x86/xen/mmu_hvm.c
@@ -5,7 +5,7 @@
#include <xen/interface/xen.h>
#include <xen/hvm.h>
-#include "mmu.h"
+#include "xen-ops.h"
#ifdef CONFIG_PROC_VMCORE
/*
diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c
index 8924129e284c..f1ce39d6d32c 100644
--- a/arch/x86/xen/mmu_pv.c
+++ b/arch/x86/xen/mmu_pv.c
@@ -82,9 +82,7 @@
#include <xen/hvc-console.h>
#include <xen/swiotlb-xen.h>
-#include "multicalls.h"
-#include "mmu.h"
-#include "debugfs.h"
+#include "xen-ops.h"
/*
* Prototypes for functions called via PV_CALLEE_SAVE_REGS_THUNK() in order
diff --git a/arch/x86/xen/multicalls.c b/arch/x86/xen/multicalls.c
index a8d699687d5c..d4cefd8a9af4 100644
--- a/arch/x86/xen/multicalls.c
+++ b/arch/x86/xen/multicalls.c
@@ -28,8 +28,7 @@
#include <asm/xen/hypercall.h>
-#include "multicalls.h"
-#include "debugfs.h"
+#include "xen-ops.h"
#define MC_BATCH 32
diff --git a/arch/x86/xen/multicalls.h b/arch/x86/xen/multicalls.h
deleted file mode 100644
index c3867b585e0d..000000000000
--- a/arch/x86/xen/multicalls.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _XEN_MULTICALLS_H
-#define _XEN_MULTICALLS_H
-
-#include <trace/events/xen.h>
-
-#include "xen-ops.h"
-
-/* Multicalls */
-struct multicall_space
-{
- struct multicall_entry *mc;
- void *args;
-};
-
-/* Allocate room for a multicall and its args */
-struct multicall_space __xen_mc_entry(size_t args);
-
-DECLARE_PER_CPU(unsigned long, xen_mc_irq_flags);
-
-/* Call to start a batch of multiple __xen_mc_entry()s. Must be
- paired with xen_mc_issue() */
-static inline void xen_mc_batch(void)
-{
- unsigned long flags;
-
- /* need to disable interrupts until this entry is complete */
- local_irq_save(flags);
- trace_xen_mc_batch(xen_get_lazy_mode());
- __this_cpu_write(xen_mc_irq_flags, flags);
-}
-
-static inline struct multicall_space xen_mc_entry(size_t args)
-{
- xen_mc_batch();
- return __xen_mc_entry(args);
-}
-
-/* Flush all pending multicalls */
-void xen_mc_flush(void);
-
-/* Issue a multicall if we're not in a lazy mode */
-static inline void xen_mc_issue(unsigned mode)
-{
- trace_xen_mc_issue(mode);
-
- if ((xen_get_lazy_mode() & mode) == 0)
- xen_mc_flush();
-
- /* restore flags saved in xen_mc_batch */
- local_irq_restore(this_cpu_read(xen_mc_irq_flags));
-}
-
-/* Set up a callback to be called when the current batch is flushed */
-void xen_mc_callback(void (*fn)(void *), void *data);
-
-/*
- * Try to extend the arguments of the previous multicall command. The
- * previous command's op must match. If it does, then it attempts to
- * extend the argument space allocated to the multicall entry by
- * arg_size bytes.
- *
- * The returned multicall_space will return with mc pointing to the
- * command on success, or NULL on failure, and args pointing to the
- * newly allocated space.
- */
-struct multicall_space xen_mc_extend_args(unsigned long op, size_t arg_size);
-
-#endif /* _XEN_MULTICALLS_H */
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 99918beccd80..3c4c20db7e39 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -81,7 +81,6 @@
#include <xen/balloon.h>
#include <xen/grant_table.h>
-#include "multicalls.h"
#include "xen-ops.h"
#define P2M_MID_PER_PAGE (PAGE_SIZE / sizeof(unsigned long *))
@@ -795,7 +794,6 @@ int clear_foreign_p2m_mapping(struct gnttab_unmap_grant_ref *unmap_ops,
#ifdef CONFIG_XEN_DEBUG_FS
#include <linux/debugfs.h>
-#include "debugfs.h"
static int p2m_dump_show(struct seq_file *m, void *v)
{
static const char * const type_name[] = {
diff --git a/arch/x86/xen/pmu.c b/arch/x86/xen/pmu.c
index 246d67dab510..f06987b0efc3 100644
--- a/arch/x86/xen/pmu.c
+++ b/arch/x86/xen/pmu.c
@@ -10,7 +10,6 @@
#include <xen/interface/xenpmu.h>
#include "xen-ops.h"
-#include "pmu.h"
/* x86_pmu.handle_irq definition */
#include "../events/perf_event.h"
diff --git a/arch/x86/xen/pmu.h b/arch/x86/xen/pmu.h
deleted file mode 100644
index 65c58894fc79..000000000000
--- a/arch/x86/xen/pmu.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __XEN_PMU_H
-#define __XEN_PMU_H
-
-#include <xen/interface/xenpmu.h>
-
-extern bool is_xen_pmu;
-
-irqreturn_t xen_pmu_irq_handler(int irq, void *dev_id);
-#ifdef CONFIG_XEN_HAVE_VPMU
-void xen_pmu_init(int cpu);
-void xen_pmu_finish(int cpu);
-#else
-static inline void xen_pmu_init(int cpu) {}
-static inline void xen_pmu_finish(int cpu) {}
-#endif
-bool pmu_msr_read(unsigned int msr, uint64_t *val, int *err);
-bool pmu_msr_write(unsigned int msr, uint32_t low, uint32_t high, int *err);
-int pmu_apic_update(uint32_t reg);
-unsigned long long xen_read_pmc(int counter);
-
-#endif /* __XEN_PMU_H */
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index 380591028cb8..a0c3e77e3d5b 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -34,7 +34,6 @@
#include <xen/features.h>
#include <xen/hvc-console.h>
#include "xen-ops.h"
-#include "mmu.h"
#define GB(x) ((uint64_t)(x) * 1024 * 1024 * 1024)
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index 935771726f9c..05f92c812ac8 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -9,7 +9,6 @@
#include <xen/hvc-console.h>
#include "xen-ops.h"
-#include "smp.h"
static DEFINE_PER_CPU(struct xen_common_irq, xen_resched_irq) = { .irq = -1 };
static DEFINE_PER_CPU(struct xen_common_irq, xen_callfunc_irq) = { .irq = -1 };
diff --git a/arch/x86/xen/smp.h b/arch/x86/xen/smp.h
deleted file mode 100644
index b8efdbc693f7..000000000000
--- a/arch/x86/xen/smp.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _XEN_SMP_H
-
-#ifdef CONFIG_SMP
-
-void asm_cpu_bringup_and_idle(void);
-asmlinkage void cpu_bringup_and_idle(void);
-
-extern void xen_send_IPI_mask(const struct cpumask *mask,
- int vector);
-extern void xen_send_IPI_mask_allbutself(const struct cpumask *mask,
- int vector);
-extern void xen_send_IPI_allbutself(int vector);
-extern void xen_send_IPI_all(int vector);
-extern void xen_send_IPI_self(int vector);
-
-extern int xen_smp_intr_init(unsigned int cpu);
-extern void xen_smp_intr_free(unsigned int cpu);
-int xen_smp_intr_init_pv(unsigned int cpu);
-void xen_smp_intr_free_pv(unsigned int cpu);
-
-void xen_smp_count_cpus(void);
-void xen_smp_cpus_done(unsigned int max_cpus);
-
-void xen_smp_send_reschedule(int cpu);
-void xen_smp_send_call_function_ipi(const struct cpumask *mask);
-void xen_smp_send_call_function_single_ipi(int cpu);
-
-void __noreturn xen_cpu_bringup_again(unsigned long stack);
-
-struct xen_common_irq {
- int irq;
- char *name;
-};
-#else /* CONFIG_SMP */
-
-static inline int xen_smp_intr_init(unsigned int cpu)
-{
- return 0;
-}
-static inline void xen_smp_intr_free(unsigned int cpu) {}
-
-static inline int xen_smp_intr_init_pv(unsigned int cpu)
-{
- return 0;
-}
-static inline void xen_smp_intr_free_pv(unsigned int cpu) {}
-static inline void xen_smp_count_cpus(void) { }
-#endif /* CONFIG_SMP */
-
-#endif
diff --git a/arch/x86/xen/smp_hvm.c b/arch/x86/xen/smp_hvm.c
index ac95d1981cc0..485c1d8804f7 100644
--- a/arch/x86/xen/smp_hvm.c
+++ b/arch/x86/xen/smp_hvm.c
@@ -5,8 +5,6 @@
#include <xen/events.h>
#include "xen-ops.h"
-#include "smp.h"
-
static void __init xen_hvm_smp_prepare_boot_cpu(void)
{
diff --git a/arch/x86/xen/smp_pv.c b/arch/x86/xen/smp_pv.c
index ac41d83b38d3..7ea57f728b89 100644
--- a/arch/x86/xen/smp_pv.c
+++ b/arch/x86/xen/smp_pv.c
@@ -46,9 +46,6 @@
#include <xen/hvc-console.h>
#include "xen-ops.h"
-#include "mmu.h"
-#include "smp.h"
-#include "pmu.h"
cpumask_var_t xen_cpu_initialized_map;
diff --git a/arch/x86/xen/suspend.c b/arch/x86/xen/suspend.c
index 1d83152c761b..77a6ea1c60e4 100644
--- a/arch/x86/xen/suspend.c
+++ b/arch/x86/xen/suspend.c
@@ -15,8 +15,6 @@
#include <asm/fixmap.h>
#include "xen-ops.h"
-#include "mmu.h"
-#include "pmu.h"
static DEFINE_PER_CPU(u64, spec_ctrl);
diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
index 9f29229e25b8..e7775dff9452 100644
--- a/arch/x86/xen/xen-ops.h
+++ b/arch/x86/xen/xen-ops.h
@@ -5,8 +5,15 @@
#include <linux/init.h>
#include <linux/clocksource.h>
#include <linux/irqreturn.h>
+#include <linux/linkage.h>
+
+#include <xen/interface/xenpmu.h>
#include <xen/xen-ops.h>
+#include <asm/page.h>
+
+#include <trace/events/xen.h>
+
/* These are code, but not functions. Defined in entry.S */
extern const char xen_failsafe_callback[];
@@ -28,8 +35,6 @@ extern struct start_info *xen_start_info;
extern struct shared_info xen_dummy_shared_info;
extern struct shared_info *HYPERVISOR_shared_info;
-extern bool xen_fifo_events;
-
void xen_setup_mfn_list_list(void);
void xen_build_mfn_list_list(void);
void xen_setup_machphys_mapping(void);
@@ -176,4 +181,142 @@ static inline void xen_hvm_post_suspend(int suspend_cancelled) {}
void xen_add_extra_mem(unsigned long start_pfn, unsigned long n_pfns);
+struct dentry * __init xen_init_debugfs(void);
+
+enum pt_level {
+ PT_PGD,
+ PT_P4D,
+ PT_PUD,
+ PT_PMD,
+ PT_PTE
+};
+
+bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn);
+void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
+unsigned long xen_read_cr2_direct(void);
+void xen_init_mmu_ops(void);
+void xen_hvm_init_mmu_ops(void);
+
+/* Multicalls */
+struct multicall_space
+{
+ struct multicall_entry *mc;
+ void *args;
+};
+
+/* Allocate room for a multicall and its args */
+struct multicall_space __xen_mc_entry(size_t args);
+
+DECLARE_PER_CPU(unsigned long, xen_mc_irq_flags);
+
+/* Call to start a batch of multiple __xen_mc_entry()s. Must be
+ paired with xen_mc_issue() */
+static inline void xen_mc_batch(void)
+{
+ unsigned long flags;
+
+ /* need to disable interrupts until this entry is complete */
+ local_irq_save(flags);
+ trace_xen_mc_batch(xen_get_lazy_mode());
+ __this_cpu_write(xen_mc_irq_flags, flags);
+}
+
+static inline struct multicall_space xen_mc_entry(size_t args)
+{
+ xen_mc_batch();
+ return __xen_mc_entry(args);
+}
+
+/* Flush all pending multicalls */
+void xen_mc_flush(void);
+
+/* Issue a multicall if we're not in a lazy mode */
+static inline void xen_mc_issue(unsigned mode)
+{
+ trace_xen_mc_issue(mode);
+
+ if ((xen_get_lazy_mode() & mode) == 0)
+ xen_mc_flush();
+
+ /* restore flags saved in xen_mc_batch */
+ local_irq_restore(this_cpu_read(xen_mc_irq_flags));
+}
+
+/* Set up a callback to be called when the current batch is flushed */
+void xen_mc_callback(void (*fn)(void *), void *data);
+
+/*
+ * Try to extend the arguments of the previous multicall command. The
+ * previous command's op must match. If it does, then it attempts to
+ * extend the argument space allocated to the multicall entry by
+ * arg_size bytes.
+ *
+ * The returned multicall_space will return with mc pointing to the
+ * command on success, or NULL on failure, and args pointing to the
+ * newly allocated space.
+ */
+struct multicall_space xen_mc_extend_args(unsigned long op, size_t arg_size);
+
+extern bool is_xen_pmu;
+
+irqreturn_t xen_pmu_irq_handler(int irq, void *dev_id);
+#ifdef CONFIG_XEN_HAVE_VPMU
+void xen_pmu_init(int cpu);
+void xen_pmu_finish(int cpu);
+#else
+static inline void xen_pmu_init(int cpu) {}
+static inline void xen_pmu_finish(int cpu) {}
+#endif
+bool pmu_msr_read(unsigned int msr, uint64_t *val, int *err);
+bool pmu_msr_write(unsigned int msr, uint32_t low, uint32_t high, int *err);
+int pmu_apic_update(uint32_t reg);
+unsigned long long xen_read_pmc(int counter);
+
+#ifdef CONFIG_SMP
+
+void asm_cpu_bringup_and_idle(void);
+asmlinkage void cpu_bringup_and_idle(void);
+
+extern void xen_send_IPI_mask(const struct cpumask *mask,
+ int vector);
+extern void xen_send_IPI_mask_allbutself(const struct cpumask *mask,
+ int vector);
+extern void xen_send_IPI_allbutself(int vector);
+extern void xen_send_IPI_all(int vector);
+extern void xen_send_IPI_self(int vector);
+
+extern int xen_smp_intr_init(unsigned int cpu);
+extern void xen_smp_intr_free(unsigned int cpu);
+int xen_smp_intr_init_pv(unsigned int cpu);
+void xen_smp_intr_free_pv(unsigned int cpu);
+
+void xen_smp_count_cpus(void);
+void xen_smp_cpus_done(unsigned int max_cpus);
+
+void xen_smp_send_reschedule(int cpu);
+void xen_smp_send_call_function_ipi(const struct cpumask *mask);
+void xen_smp_send_call_function_single_ipi(int cpu);
+
+void __noreturn xen_cpu_bringup_again(unsigned long stack);
+
+struct xen_common_irq {
+ int irq;
+ char *name;
+};
+#else /* CONFIG_SMP */
+
+static inline int xen_smp_intr_init(unsigned int cpu)
+{
+ return 0;
+}
+static inline void xen_smp_intr_free(unsigned int cpu) {}
+
+static inline int xen_smp_intr_init_pv(unsigned int cpu)
+{
+ return 0;
+}
+static inline void xen_smp_intr_free_pv(unsigned int cpu) {}
+static inline void xen_smp_count_cpus(void) { }
+#endif /* CONFIG_SMP */
+
#endif /* XEN_OPS_H */
diff --git a/include/xen/events.h b/include/xen/events.h
index 3b07409f8032..de5da58a0205 100644
--- a/include/xen/events.h
+++ b/include/xen/events.h
@@ -144,4 +144,6 @@ static inline void xen_evtchn_close(evtchn_port_t port)
BUG();
}
+extern bool xen_fifo_events;
+
#endif /* _XEN_EVENTS_H */
--
2.43.0
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