FM / asm-generic

/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/asm-generic/

/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/asm-generic

Name	Size	Mode	Actions
bitops/	-	0755	rm
vdso/	-	0755	rm
4level-fixup.h	1098	0644	edit dl rm
5level-fixup.h	1273	0644	edit dl rm
asm-offsets.h	35	0644	edit dl rm
asm-prototypes.h	507	0644	edit dl rm
atomic-instrumented.h	13623	0644	edit dl rm
atomic-long.h	8048	0644	edit dl rm
atomic.h	4391	0644	edit dl rm
atomic64.h	1797	0644	edit dl rm
audit_change_attr.h	484	0644	edit dl rm
audit_dir_write.h	528	0644	edit dl rm
audit_read.h	241	0644	edit dl rm
audit_signal.h	36	0644	edit dl rm
audit_write.h	461	0644	edit dl rm
barrier.h	6868	0644	edit dl rm
bitops-instrumented.h	7909	0644	edit dl rm
bitops.h	1119	0644	edit dl rm
bitsperlong.h	592	0644	edit dl rm
bug.h	6720	0644	edit dl rm
bugs.h	267	0644	edit dl rm
cache.h	384	0644	edit dl rm
cacheflush.h	1340	0644	edit dl rm
checksum.h	2329	0644	edit dl rm
cmpxchg-local.h	1464	0644	edit dl rm
cmpxchg.h	2286	0644	edit dl rm
compat.h	658	0644	edit dl rm
current.h	256	0644	edit dl rm
delay.h	1157	0644	edit dl rm
device.h	245	0644	edit dl rm
div64.h	7458	0644	edit dl rm
dma-contiguous.h	238	0644	edit dl rm
dma-mapping.h	248	0644	edit dl rm
dma.h	553	0644	edit dl rm
early_ioremap.h	1696	0644	edit dl rm
emergency-restart.h	248	0644	edit dl rm
error-injection.h	1178	0644	edit dl rm
exec.h	667	0644	edit dl rm
export.h	2002	0644	edit dl rm
extable.h	802	0644	edit dl rm
fb.h	271	0644	edit dl rm
fixmap.h	2904	0644	edit dl rm
ftrace.h	460	0644	edit dl rm
futex.h	2964	0644	edit dl rm
getorder.h	1487	0644	edit dl rm
gpio.h	4558	0644	edit dl rm
hardirq.h	532	0644	edit dl rm
hugetlb.h	1326	0644	edit dl rm
hw_irq.h	270	0644	edit dl rm
hyperv-tlfs.h	20696	0644	edit dl rm
ide_iops.h	791	0644	edit dl rm
int-ll64.h	863	0644	edit dl rm
io.h	24167	0644	edit dl rm
ioctl.h	506	0644	edit dl rm
iomap.h	4033	0644	edit dl rm
irq.h	403	0644	edit dl rm
irqflags.h	1543	0644	edit dl rm
irq_regs.h	980	0644	edit dl rm
irq_work.h	194	0644	edit dl rm
kdebug.h	182	0644	edit dl rm
kmap_size.h	263	0644	edit dl rm
kprobes.h	868	0644	edit dl rm
kvm_para.h	549	0644	edit dl rm
kvm_types.h	113	0644	edit dl rm
linkage.h	225	0644	edit dl rm
local.h	2282	0644	edit dl rm
local64.h	3887	0644	edit dl rm
mcs_spinlock.h	260	0644	edit dl rm
memory_model.h	2209	0644	edit dl rm
mm-arch-hooks.h	388	0644	edit dl rm
mmiowb.h	1731	0644	edit dl rm
mmiowb_types.h	249	0644	edit dl rm
mmu.h	449	0644	edit dl rm
mmu_context.h	881	0644	edit dl rm
mm_hooks.h	854	0644	edit dl rm
module.h	1118	0644	edit dl rm
mshyperv.h	8592	0644	edit dl rm
msi.h	1053	0644	edit dl rm
numa.h	1544	0644	edit dl rm
page.h	2454	0644	edit dl rm
param.h	367	0644	edit dl rm
parport.h	604	0644	edit dl rm
pci.h	401	0644	edit dl rm
pci_iomap.h	1775	0644	edit dl rm
percpu.h	13026	0644	edit dl rm
pgalloc.h	342	0644	edit dl rm
pgtable-nop4d-hack.h	1965	0644	edit dl rm
pgtable-nop4d.h	1772	0644	edit dl rm
pgtable-nopmd.h	1944	0644	edit dl rm
pgtable-nopud.h	2071	0644	edit dl rm
pgtable.h	33765	0644	edit dl rm
pgtable_uffd.h	1052	0644	edit dl rm
preempt.h	1994	0644	edit dl rm
ptrace.h	1615	0644	edit dl rm
qrwlock.h	4315	0644	edit dl rm
qrwlock_types.h	682	0644	edit dl rm
qspinlock.h	3816	0644	edit dl rm
qspinlock_types.h	2590	0644	edit dl rm
resource.h	1100	0644	edit dl rm
seccomp.h	1328	0644	edit dl rm
sections.h	5306	0644	edit dl rm
segment.h	249	0644	edit dl rm
serial.h	345	0644	edit dl rm
set_memory.h	362	0644	edit dl rm
signal.h	308	0644	edit dl rm
simd.h	436	0644	edit dl rm
sizes.h	78	0644	edit dl rm
spinlock.h	329	0644	edit dl rm
statfs.h	169	0644	edit dl rm
string.h	281	0644	edit dl rm
switch_to.h	962	0644	edit dl rm
syscall.h	6389	0644	edit dl rm
syscalls.h	739	0644	edit dl rm
termios-base.h	2164	0644	edit dl rm
termios.h	2877	0644	edit dl rm
timex.h	508	0644	edit dl rm
tlb.h	22153	0644	edit dl rm
tlbflush.h	485	0644	edit dl rm
topology.h	2234	0644	edit dl rm
trace_clock.h	391	0644	edit dl rm
uaccess.h	5272	0644	edit dl rm
unaligned.h	1078	0644	edit dl rm
unistd.h	318	0644	edit dl rm
user.h	242	0644	edit dl rm
vga.h	587	0644	edit dl rm
vmlinux.lds.h	28848	0644	edit dl rm
vtime.h	52	0644	edit dl rm
word-at-a-time.h	2817	0644	edit dl rm
xor.h	13961	0644	edit dl rm

Edit: /usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/asm-generic/mshyperv.h (8592B)

/* SPDX-License-Identifier: GPL-2.0 */

/*
 * Linux-specific definitions for managing interactions with Microsoft's
 * Hyper-V hypervisor. The definitions in this file are architecture
 * independent. See arch/<arch>/include/asm/mshyperv.h for definitions
 * that are specific to architecture <arch>.
 *
 * Definitions that are specified in the Hyper-V Top Level Functional
 * Spec (TLFS) should not go in this file, but should instead go in
 * hyperv-tlfs.h.
 *
 * Copyright (C) 2019, Microsoft, Inc.
 *
 * Author : Michael Kelley <mikelley@microsoft.com>
 */

#ifndef _ASM_GENERIC_MSHYPERV_H
#define _ASM_GENERIC_MSHYPERV_H

#include <linux/types.h>
#include <linux/atomic.h>
#include <linux/bitops.h>
#include <linux/cpumask.h>
#include <linux/nmi.h>
#include <asm/ptrace.h>
#include <asm/hyperv-tlfs.h>

#define VTPM_BASE_ADDRESS 0xfed40000

struct ms_hyperv_info {
	u32 features;
	u32 priv_high;
	u32 misc_features;
	u32 hints;
	u32 nested_features;
	u32 max_vp_index;
	u32 max_lp_index;
	union {
		u32 isolation_config_a;
		struct {
			u32 paravisor_present : 1;
			u32 reserved_a1 : 31;
		};
	};
	union {
		u32 isolation_config_b;
		struct {
			u32 cvm_type : 4;
			u32 reserved_b1 : 1;
			u32 shared_gpa_boundary_active : 1;
			u32 shared_gpa_boundary_bits : 6;
			u32 reserved_b2 : 20;
		};
	};
	u64 shared_gpa_boundary;
	u8 vtl;
};
extern struct ms_hyperv_info ms_hyperv;
extern bool hv_nested;

extern void * __percpu *hyperv_pcpu_input_arg;
extern void * __percpu *hyperv_pcpu_output_arg;

extern u64 hv_do_hypercall(u64 control, void *inputaddr, void *outputaddr);
extern u64 hv_do_fast_hypercall8(u16 control, u64 input8);
bool hv_isolation_type_snp(void);
bool hv_isolation_type_tdx(void);

/* Helper functions that provide a consistent pattern for checking Hyper-V hypercall status. */
static inline int hv_result(u64 status)
{
	return status & HV_HYPERCALL_RESULT_MASK;
}

static inline bool hv_result_success(u64 status)
{
	return hv_result(status) == HV_STATUS_SUCCESS;
}

static inline unsigned int hv_repcomp(u64 status)
{
	/* Bits [43:32] of status have 'Reps completed' data. */
	return (status & HV_HYPERCALL_REP_COMP_MASK) >>
			 HV_HYPERCALL_REP_COMP_OFFSET;
}

/*
 * Rep hypercalls. Callers of this functions are supposed to ensure that
 * rep_count and varhead_size comply with Hyper-V hypercall definition.
 */
static inline u64 hv_do_rep_hypercall(u16 code, u16 rep_count, u16 varhead_size,
				      void *input, void *output)
{
	u64 control = code;
	u64 status;
	u16 rep_comp;

control |= (u64)varhead_size << HV_HYPERCALL_VARHEAD_OFFSET;
	control |= (u64)rep_count << HV_HYPERCALL_REP_COMP_OFFSET;

do {
		status = hv_do_hypercall(control, input, output);
		if (!hv_result_success(status))
			return status;

rep_comp = hv_repcomp(status);

control &= ~HV_HYPERCALL_REP_START_MASK;
		control |= (u64)rep_comp << HV_HYPERCALL_REP_START_OFFSET;

touch_nmi_watchdog();
	} while (rep_comp < rep_count);

return status;
}

/* Generate the guest OS identifier as described in the Hyper-V TLFS */
static inline u64 hv_generate_guest_id(u64 kernel_version)
{
	u64 guest_id;

guest_id = (((u64)HV_LINUX_VENDOR_ID) << 48);
	guest_id |= (kernel_version << 16);

return guest_id;
}

/* Free the message slot and signal end-of-message if required */
static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type)
{
	/*
	 * On crash we're reading some other CPU's message page and we need
	 * to be careful: this other CPU may already had cleared the header
	 * and the host may already had delivered some other message there.
	 * In case we blindly write msg->header.message_type we're going
	 * to lose it. We can still lose a message of the same type but
	 * we count on the fact that there can only be one
	 * CHANNELMSG_UNLOAD_RESPONSE and we don't care about other messages
	 * on crash.
	 */
	if (cmpxchg(&msg->header.message_type, old_msg_type,
		    HVMSG_NONE) != old_msg_type)
		return;

/*
	 * The cmxchg() above does an implicit memory barrier to
	 * ensure the write to MessageType (ie set to
	 * HVMSG_NONE) happens before we read the
	 * MessagePending and EOMing. Otherwise, the EOMing
	 * will not deliver any more messages since there is
	 * no empty slot
	 */
	if (msg->header.message_flags.msg_pending) {
		/*
		 * This will cause message queue rescan to
		 * possibly deliver another msg from the
		 * hypervisor
		 */
		hv_set_register(HV_REGISTER_EOM, 0);
	}
}

void hv_setup_vmbus_handler(void (*handler)(void));
void hv_remove_vmbus_handler(void);
void hv_setup_stimer0_handler(void (*handler)(void));
void hv_remove_stimer0_handler(void);

void hv_setup_kexec_handler(void (*handler)(void));
void hv_remove_kexec_handler(void);
void hv_setup_crash_handler(void (*handler)(struct pt_regs *regs));
void hv_remove_crash_handler(void);

extern int vmbus_interrupt;
extern int vmbus_irq;

extern bool hv_root_partition;

#if IS_ENABLED(CONFIG_HYPERV)
/*
 * Hypervisor's notion of virtual processor ID is different from
 * Linux' notion of CPU ID. This information can only be retrieved
 * in the context of the calling CPU. Setup a map for easy access
 * to this information.
 */
extern u32 *hv_vp_index;
extern u32 hv_max_vp_index;

extern u64 (*hv_read_reference_counter)(void);

/* Sentinel value for an uninitialized entry in hv_vp_index array */
#define VP_INVAL	U32_MAX

int __init hv_common_init(void);
void __init hv_common_free(void);
int hv_common_cpu_init(unsigned int cpu);
int hv_common_cpu_die(unsigned int cpu);

void *hv_alloc_hyperv_page(void);
void *hv_alloc_hyperv_zeroed_page(void);
void hv_free_hyperv_page(unsigned long addr);

/**
 * hv_cpu_number_to_vp_number() - Map CPU to VP.
 * @cpu_number: CPU number in Linux terms
 *
 * This function returns the mapping between the Linux processor
 * number and the hypervisor's virtual processor number, useful
 * in making hypercalls and such that talk about specific
 * processors.
 *
 * Return: Virtual processor number in Hyper-V terms
 */
static inline int hv_cpu_number_to_vp_number(int cpu_number)
{
	return hv_vp_index[cpu_number];
}

static inline int __cpumask_to_vpset(struct hv_vpset *vpset,
				    const struct cpumask *cpus,
				    bool exclude_self)
{
	int cpu, vcpu, vcpu_bank, vcpu_offset, nr_bank = 1;
	int this_cpu = smp_processor_id();
	int max_vcpu_bank = hv_max_vp_index / HV_VCPUS_PER_SPARSE_BANK;

/* vpset.valid_bank_mask can represent up to HV_MAX_SPARSE_VCPU_BANKS banks */
	if (max_vcpu_bank >= HV_MAX_SPARSE_VCPU_BANKS)
		return 0;

/*
	 * Clear all banks up to the maximum possible bank as hv_tlb_flush_ex
	 * structs are not cleared between calls, we risk flushing unneeded
	 * vCPUs otherwise.
	 */
	for (vcpu_bank = 0; vcpu_bank <= max_vcpu_bank; vcpu_bank++)
		vpset->bank_contents[vcpu_bank] = 0;

/*
	 * Some banks may end up being empty but this is acceptable.
	 */
	for_each_cpu(cpu, cpus) {
		if (exclude_self && cpu == this_cpu)
			continue;
		vcpu = hv_cpu_number_to_vp_number(cpu);
		if (vcpu == VP_INVAL)
			return -1;
		vcpu_bank = vcpu / HV_VCPUS_PER_SPARSE_BANK;
		vcpu_offset = vcpu % HV_VCPUS_PER_SPARSE_BANK;
		__set_bit(vcpu_offset, (unsigned long *)
			  &vpset->bank_contents[vcpu_bank]);
		if (vcpu_bank >= nr_bank)
			nr_bank = vcpu_bank + 1;
	}
	vpset->valid_bank_mask = GENMASK_ULL(nr_bank - 1, 0);
	return nr_bank;
}

static inline int cpumask_to_vpset(struct hv_vpset *vpset,
				    const struct cpumask *cpus)
{
	return __cpumask_to_vpset(vpset, cpus, false);
}

static inline int cpumask_to_vpset_noself(struct hv_vpset *vpset,
				    const struct cpumask *cpus)
{
	WARN_ON_ONCE(preemptible());
	return __cpumask_to_vpset(vpset, cpus, true);
}

void hyperv_report_panic(struct pt_regs *regs, long err, bool in_die);
bool hv_is_hyperv_initialized(void);
bool hv_is_hibernation_supported(void);
enum hv_isolation_type hv_get_isolation_type(void);
bool hv_is_isolation_supported(void);
bool hv_isolation_type_snp(void);
u64 hv_ghcb_hypercall(u64 control, void *input, void *output, u32 input_size);
u64 hv_tdx_hypercall(u64 control, u64 param1, u64 param2);
void hyperv_cleanup(void);
bool hv_query_ext_cap(u64 cap_query);
void hv_setup_dma_ops(struct device *dev, bool coherent);
#else /* CONFIG_HYPERV */
static inline bool hv_is_hyperv_initialized(void) { return false; }
static inline bool hv_is_hibernation_supported(void) { return false; }
static inline void hyperv_cleanup(void) {}
static inline bool hv_is_isolation_supported(void) { return false; }
static inline enum hv_isolation_type hv_get_isolation_type(void)
{
	return HV_ISOLATION_TYPE_NONE;
}
#endif /* CONFIG_HYPERV */

#endif

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