Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 67d9b5a..1ce131f 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -14,6 +14,7 @@
#include <uapi/linux/hyperv.h>
+#include <linux/mm.h>
#include <linux/types.h>
#include <linux/scatterlist.h>
#include <linux/list.h>
@@ -23,12 +24,55 @@
#include <linux/mod_devicetable.h>
#include <linux/interrupt.h>
#include <linux/reciprocal_div.h>
+#include <asm/hyperv-tlfs.h>
#define MAX_PAGE_BUFFER_COUNT 32
#define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */
#pragma pack(push, 1)
+/*
+ * Types for GPADL, decides is how GPADL header is created.
+ *
+ * It doesn't make much difference between BUFFER and RING if PAGE_SIZE is the
+ * same as HV_HYP_PAGE_SIZE.
+ *
+ * If PAGE_SIZE is bigger than HV_HYP_PAGE_SIZE, the headers of ring buffers
+ * will be of PAGE_SIZE, however, only the first HV_HYP_PAGE will be put
+ * into gpadl, therefore the number for HV_HYP_PAGE and the indexes of each
+ * HV_HYP_PAGE will be different between different types of GPADL, for example
+ * if PAGE_SIZE is 64K:
+ *
+ * BUFFER:
+ *
+ * gva: |-- 64k --|-- 64k --| ... |
+ * gpa: | 4k | 4k | ... | 4k | 4k | 4k | ... | 4k |
+ * index: 0 1 2 15 16 17 18 .. 31 32 ...
+ * | | ... | | | ... | ...
+ * v V V V V V
+ * gpadl: | 4k | 4k | ... | 4k | 4k | 4k | ... | 4k | ... |
+ * index: 0 1 2 ... 15 16 17 18 .. 31 32 ...
+ *
+ * RING:
+ *
+ * | header | data | header | data |
+ * gva: |-- 64k --|-- 64k --| ... |-- 64k --|-- 64k --| ... |
+ * gpa: | 4k | .. | 4k | 4k | ... | 4k | ... | 4k | .. | 4k | .. | ... |
+ * index: 0 1 16 17 18 31 ... n n+1 n+16 ... 2n
+ * | / / / | / /
+ * | / / / | / /
+ * | / / ... / ... | / ... /
+ * | / / / | / /
+ * | / / / | / /
+ * V V V V V V v
+ * gpadl: | 4k | 4k | ... | ... | 4k | 4k | ... |
+ * index: 0 1 2 ... 16 ... n-15 n-14 n-13 ... 2n-30
+ */
+enum hv_gpadl_type {
+ HV_GPADL_BUFFER,
+ HV_GPADL_RING
+};
+
/* Single-page buffer */
struct hv_page_buffer {
u32 len;
@@ -111,15 +155,19 @@
} feature_bits;
/* Pad it to PAGE_SIZE so that data starts on page boundary */
- u8 reserved2[4028];
+ u8 reserved2[PAGE_SIZE - 68];
/*
* Ring data starts here + RingDataStartOffset
* !!! DO NOT place any fields below this !!!
*/
- u8 buffer[0];
+ u8 buffer[];
} __packed;
+/* Calculate the proper size of a ringbuffer, it must be page-aligned */
+#define VMBUS_RING_SIZE(payload_sz) PAGE_ALIGN(sizeof(struct hv_ring_buffer) + \
+ (payload_sz))
+
struct hv_ring_buffer_info {
struct hv_ring_buffer *ring_buffer;
u32 ring_size; /* Include the shared header */
@@ -182,19 +230,21 @@
* 2 . 4 (Windows 8)
* 3 . 0 (Windows 8 R2)
* 4 . 0 (Windows 10)
+ * 4 . 1 (Windows 10 RS3)
* 5 . 0 (Newer Windows 10)
+ * 5 . 1 (Windows 10 RS4)
+ * 5 . 2 (Windows Server 2019, RS5)
*/
#define VERSION_WS2008 ((0 << 16) | (13))
#define VERSION_WIN7 ((1 << 16) | (1))
#define VERSION_WIN8 ((2 << 16) | (4))
#define VERSION_WIN8_1 ((3 << 16) | (0))
-#define VERSION_WIN10 ((4 << 16) | (0))
+#define VERSION_WIN10 ((4 << 16) | (0))
+#define VERSION_WIN10_V4_1 ((4 << 16) | (1))
#define VERSION_WIN10_V5 ((5 << 16) | (0))
-
-#define VERSION_INVAL -1
-
-#define VERSION_CURRENT VERSION_WIN10_V5
+#define VERSION_WIN10_V5_1 ((5 << 16) | (1))
+#define VERSION_WIN10_V5_2 ((5 << 16) | (2))
/* Make maximum size of pipe payload of 16K */
#define MAX_PIPE_DATA_PAYLOAD (sizeof(u8) * 16384)
@@ -311,7 +361,7 @@
struct gpa_range {
u32 byte_count;
u32 byte_offset;
- u64 pfn_array[0];
+ u64 pfn_array[];
};
/*
@@ -423,7 +473,7 @@
CHANNELMSG_19 = 19,
CHANNELMSG_20 = 20,
CHANNELMSG_TL_CONNECT_REQUEST = 21,
- CHANNELMSG_22 = 22,
+ CHANNELMSG_MODIFYCHANNEL = 22,
CHANNELMSG_TL_CONNECT_RESULT = 23,
CHANNELMSG_COUNT
};
@@ -561,7 +611,7 @@
u32 gpadl;
u16 range_buflen;
u16 rangecount;
- struct gpa_range range[0];
+ struct gpa_range range[];
} __packed;
/* This is the followup packet that contains more PFNs. */
@@ -569,7 +619,7 @@
struct vmbus_channel_message_header header;
u32 msgnumber;
u32 gpadl;
- u64 pfn[0];
+ u64 pfn[];
} __packed;
struct vmbus_channel_gpadl_created {
@@ -618,6 +668,13 @@
guid_t host_service_id;
} __packed;
+/* Modify Channel parameters, cf. vmbus_send_modifychannel() */
+struct vmbus_channel_modifychannel {
+ struct vmbus_channel_message_header header;
+ u32 child_relid;
+ u32 target_vp;
+} __packed;
+
struct vmbus_channel_version_response {
struct vmbus_channel_message_header header;
u8 version_supported;
@@ -670,7 +727,7 @@
* The channel message that goes out on the "wire".
* It will contain at minimum the VMBUS_CHANNEL_MESSAGE_HEADER header
*/
- unsigned char msg[0];
+ unsigned char msg[];
};
struct vmbus_close_msg {
@@ -687,11 +744,6 @@
} u;
};
-enum hv_numa_policy {
- HV_BALANCED = 0,
- HV_LOCALIZED,
-};
-
enum vmbus_device_type {
HV_IDE = 0,
HV_SCSI,
@@ -769,6 +821,15 @@
void (*onchannel_callback)(void *context);
void *channel_callback_context;
+ void (*change_target_cpu_callback)(struct vmbus_channel *channel,
+ u32 old, u32 new);
+
+ /*
+ * Synchronize channel scheduling and channel removal; see the inline
+ * comments in vmbus_chan_sched() and vmbus_reset_channel_cb().
+ */
+ spinlock_t sched_lock;
+
/*
* A channel can be marked for one of three modes of reading:
* BATCHED - callback called from taslket and should read
@@ -790,22 +851,16 @@
u64 sig_event;
/*
- * Starting with win8, this field will be used to specify
- * the target virtual processor on which to deliver the interrupt for
- * the host to guest communication.
- * Prior to win8, incoming channel interrupts would only
- * be delivered on cpu 0. Setting this value to 0 would
- * preserve the earlier behavior.
+ * Starting with win8, this field will be used to specify the
+ * target CPU on which to deliver the interrupt for the host
+ * to guest communication.
+ *
+ * Prior to win8, incoming channel interrupts would only be
+ * delivered on CPU 0. Setting this value to 0 would preserve
+ * the earlier behavior.
*/
- u32 target_vp;
- /* The corresponding CPUID in the guest */
u32 target_cpu;
/*
- * State to manage the CPU affiliation of channels.
- */
- struct cpumask alloced_cpus_in_node;
- int numa_node;
- /*
* Support for sub-channels. For high performance devices,
* it will be useful to have multiple sub-channels to support
* a scalable communication infrastructure with the host.
@@ -834,12 +889,6 @@
void (*chn_rescind_callback)(struct vmbus_channel *channel);
/*
- * The spinlock to protect the structure. It is being used to protect
- * test-and-set access to various attributes of the structure as well
- * as all sc_list operations.
- */
- spinlock_t lock;
- /*
* All Sub-channels of a primary channel are linked here.
*/
struct list_head sc_list;
@@ -852,11 +901,6 @@
* Support per-channel state for use by vmbus drivers.
*/
void *per_channel_state;
- /*
- * To support per-cpu lookup mapping of relid to channel,
- * link up channels based on their CPU affinity.
- */
- struct list_head percpu_list;
/*
* Defer freeing channel until after all cpu's have
@@ -895,21 +939,16 @@
*/
bool low_latency;
- /*
- * NUMA distribution policy:
- * We support two policies:
- * 1) Balanced: Here all performance critical channels are
- * distributed evenly amongst all the NUMA nodes.
- * This policy will be the default policy.
- * 2) Localized: All channels of a given instance of a
- * performance critical service will be assigned CPUs
- * within a selected NUMA node.
- */
- enum hv_numa_policy affinity_policy;
-
bool probe_done;
/*
+ * Cache the device ID here for easy access; this is useful, in
+ * particular, in situations where the channel's device_obj has
+ * not been allocated/initialized yet.
+ */
+ u16 device_id;
+
+ /*
* We must offload the handling of the primary/sub channels
* from the single-threaded vmbus_connection.work_queue to
* two different workqueue, otherwise we can block
@@ -934,6 +973,21 @@
* full outbound ring buffer.
*/
u64 out_full_first;
+
+ /* enabling/disabling fuzz testing on the channel (default is false)*/
+ bool fuzz_testing_state;
+
+ /*
+ * Interrupt delay will delay the guest from emptying the ring buffer
+ * for a specific amount of time. The delay is in microseconds and will
+ * be between 1 to a maximum of 1000, its default is 0 (no delay).
+ * The Message delay will delay guest reading on a per message basis
+ * in microseconds between 1 to 1000 with the default being 0
+ * (no delay).
+ */
+ u32 fuzz_testing_interrupt_delay;
+ u32 fuzz_testing_message_delay;
+
};
static inline bool is_hvsock_channel(const struct vmbus_channel *c)
@@ -947,12 +1001,6 @@
return c->offermsg.offer.sub_channel_index != 0;
}
-static inline void set_channel_affinity_state(struct vmbus_channel *c,
- enum hv_numa_policy policy)
-{
- c->affinity_policy = policy;
-}
-
static inline void set_channel_read_mode(struct vmbus_channel *c,
enum hv_callback_mode mode)
{
@@ -1000,7 +1048,7 @@
c->low_latency = false;
}
-void vmbus_onmessage(void *context);
+void vmbus_onmessage(struct vmbus_channel_message_header *hdr);
int vmbus_request_offers(void);
@@ -1182,6 +1230,10 @@
struct vmbus_channel *channel;
struct kset *channels_kset;
+
+ /* place holder to keep track of the dir for hv device in debugfs */
+ struct dentry *debug_dir;
+
};
@@ -1414,6 +1466,8 @@
void (*util_cb)(void *);
int (*util_init)(struct hv_util_service *);
void (*util_deinit)(void);
+ int (*util_pre_suspend)(void);
+ int (*util_pre_resume)(void);
};
struct vmbuspipe_hdr {
@@ -1508,6 +1562,7 @@
int vmbus_send_tl_connect_request(const guid_t *shv_guest_servie_id,
const guid_t *shv_host_servie_id);
+int vmbus_send_modifychannel(u32 child_relid, u32 target_vp);
void vmbus_set_event(struct vmbus_channel *channel);
/* Get the start of the ring buffer. */
@@ -1623,4 +1678,22 @@
extern struct hyperv_pci_block_ops hvpci_block_ops;
+static inline unsigned long virt_to_hvpfn(void *addr)
+{
+ phys_addr_t paddr;
+
+ if (is_vmalloc_addr(addr))
+ paddr = page_to_phys(vmalloc_to_page(addr)) +
+ offset_in_page(addr);
+ else
+ paddr = __pa(addr);
+
+ return paddr >> HV_HYP_PAGE_SHIFT;
+}
+
+#define NR_HV_HYP_PAGES_IN_PAGE (PAGE_SIZE / HV_HYP_PAGE_SIZE)
+#define offset_in_hvpage(ptr) ((unsigned long)(ptr) & ~HV_HYP_PAGE_MASK)
+#define HVPFN_UP(x) (((x) + HV_HYP_PAGE_SIZE-1) >> HV_HYP_PAGE_SHIFT)
+#define page_to_hvpfn(page) (page_to_pfn(page) * NR_HV_HYP_PAGES_IN_PAGE)
+
#endif /* _HYPERV_H */