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hyperv-next for 5.16

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Merge tag 'hyperv-next-signed-20211102' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyperv updates from Wei Liu:

 - Initial patch set for Hyper-V isolation VM support (Tianyu Lan)

 - Fix a warning on preemption (Vitaly Kuznetsov)

 - A bunch of misc cleanup patches

* tag 'hyperv-next-signed-20211102' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  x86/hyperv: Protect set_hv_tscchange_cb() against getting preempted
  Drivers: hv : vmbus: Adding NULL pointer check
  x86/hyperv: Remove duplicate include
  x86/hyperv: Remove duplicated include in hv_init
  Drivers: hv: vmbus: Remove unused code to check for subchannels
  Drivers: hv: vmbus: Initialize VMbus ring buffer for Isolation VM
  Drivers: hv: vmbus: Add SNP support for VMbus channel initiate message
  x86/hyperv: Add ghcb hvcall support for SNP VM
  x86/hyperv: Add Write/Read MSR registers via ghcb page
  Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM
  x86/hyperv: Add new hvcall guest address host visibility support
  x86/hyperv: Initialize shared memory boundary in the Isolation VM.
  x86/hyperv: Initialize GHCB page in Isolation VM
This commit is contained in:
Linus Torvalds 2021-11-02 10:56:49 -07:00
commit 44261f8e28
21 changed files with 761 additions and 172 deletions
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25
include/linux/hyperv.h
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@ -803,6 +803,12 @@ struct vmbus_device {
#define VMBUS_DEFAULT_MAX_PKT_SIZE 4096
struct vmbus_gpadl {
u32 gpadl_handle;
u32 size;
void *buffer;
};
struct vmbus_channel {
struct list_head listentry;
@ -822,7 +828,7 @@ struct vmbus_channel {
bool rescind_ref; /* got rescind msg, got channel reference */
struct completion rescind_event;
u32 ringbuffer_gpadlhandle;
struct vmbus_gpadl ringbuffer_gpadlhandle;
/* Allocated memory for ring buffer */
struct page *ringbuffer_page;
@ -1100,19 +1106,6 @@ void vmbus_set_sc_create_callback(struct vmbus_channel *primary_channel,
void vmbus_set_chn_rescind_callback(struct vmbus_channel *channel,
void (*chn_rescind_cb)(struct vmbus_channel *));
/*
* Check if sub-channels have already been offerred. This API will be useful
* when the driver is unloaded after establishing sub-channels. In this case,
* when the driver is re-loaded, the driver would have to check if the
* subchannels have already been established before attempting to request
* the creation of sub-channels.
* This function returns TRUE to indicate that subchannels have already been
* created.
* This function should be invoked after setting the callback function for
* sub-channel creation.
*/
bool vmbus_are_subchannels_present(struct vmbus_channel *primary);
/* The format must be the same as struct vmdata_gpa_direct */
struct vmbus_channel_packet_page_buffer {
u16 type;
@ -1192,10 +1185,10 @@ extern int vmbus_sendpacket_mpb_desc(struct vmbus_channel *channel,
extern int vmbus_establish_gpadl(struct vmbus_channel *channel,
void *kbuffer,
u32 size,
u32 *gpadl_handle);
struct vmbus_gpadl *gpadl);
extern int vmbus_teardown_gpadl(struct vmbus_channel *channel,
u32 gpadl_handle);
struct vmbus_gpadl *gpadl);
void vmbus_reset_channel_cb(struct vmbus_channel *channel);