xen: features for 4.4-rc0
- Improve balloon driver memory hotplug placement. - Use unpopulated hotplugged memory for foreign pages (if supported/enabled). - Support 64 KiB guest pages on arm64. - CPU hotplug support on arm/arm64. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJWOeSkAAoJEFxbo/MsZsTRph0H/0nE8Tx0GyGtOyCYfBdInTvI WgjvL8VR1XrweZMVis3668MzhLSYg6b5lvJsoi+L3jlzYRyze43iHXsKfvp+8p0o TVUhFnlHEHF8ASEtPydAi6HgS7Dn9OQ9LaZ45R1Gk0rHnwJjIQonhTn2jB0yS9Am Hf4aZXP2NVZphjYcloqNsLH0G6mGLtgq8cS0uKcVO2YIrR4Dr3sfj9qfq9mflf8n sA/5ifoHRfOUD1vJzYs4YmIBUv270jSsprWK/Mi2oXIxUTBpKRAV1RVCAPW6GFci HIZjIJkjEPWLsvxWEs0dUFJQGp3jel5h8vFPkDWBYs3+9rILU2DnLWpKGNDHx3k= =vUfa -----END PGP SIGNATURE----- Merge tag 'for-linus-4.4-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from David Vrabel: - Improve balloon driver memory hotplug placement. - Use unpopulated hotplugged memory for foreign pages (if supported/enabled). - Support 64 KiB guest pages on arm64. - CPU hotplug support on arm/arm64. * tag 'for-linus-4.4-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (44 commits) xen: fix the check of e_pfn in xen_find_pfn_range x86/xen: add reschedule point when mapping foreign GFNs xen/arm: don't try to re-register vcpu_info on cpu_hotplug. xen, cpu_hotplug: call device_offline instead of cpu_down xen/arm: Enable cpu_hotplug.c xenbus: Support multiple grants ring with 64KB xen/grant-table: Add an helper to iterate over a specific number of grants xen/xenbus: Rename *RING_PAGE* to *RING_GRANT* xen/arm: correct comment in enlighten.c xen/gntdev: use types from linux/types.h in userspace headers xen/gntalloc: use types from linux/types.h in userspace headers xen/balloon: Use the correct sizeof when declaring frame_list xen/swiotlb: Add support for 64KB page granularity xen/swiotlb: Pass addresses rather than frame numbers to xen_arch_need_swiotlb arm/xen: Add support for 64KB page granularity xen/privcmd: Add support for Linux 64KB page granularity net/xen-netback: Make it running on 64KB page granularity net/xen-netfront: Make it running on 64KB page granularity block/xen-blkback: Make it running on 64KB page granularity block/xen-blkfront: Make it running on 64KB page granularity ...
This commit is contained in:
Linus Torvalds
commit
41ecf1404b
41 changed files with 1370 additions and 652 deletions
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@ -11,6 +11,8 @@
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#ifndef __LINUX_PUBLIC_GNTALLOC_H__
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#define __LINUX_PUBLIC_GNTALLOC_H__
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#include <linux/types.h>
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/*
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* Allocates a new page and creates a new grant reference.
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*/
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@ -19,17 +21,17 @@ _IOC(_IOC_NONE, 'G', 5, sizeof(struct ioctl_gntalloc_alloc_gref))
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struct ioctl_gntalloc_alloc_gref {
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/* IN parameters */
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/* The ID of the domain to be given access to the grants. */
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uint16_t domid;
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__u16 domid;
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/* Flags for this mapping */
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uint16_t flags;
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__u16 flags;
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/* Number of pages to map */
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uint32_t count;
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__u32 count;
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/* OUT parameters */
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/* The offset to be used on a subsequent call to mmap(). */
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uint64_t index;
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__u64 index;
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/* The grant references of the newly created grant, one per page */
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/* Variable size, depending on count */
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uint32_t gref_ids[1];
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__u32 gref_ids[1];
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};
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#define GNTALLOC_FLAG_WRITABLE 1
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@ -43,9 +45,9 @@ _IOC(_IOC_NONE, 'G', 6, sizeof(struct ioctl_gntalloc_dealloc_gref))
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struct ioctl_gntalloc_dealloc_gref {
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/* IN parameters */
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/* The offset returned in the map operation */
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uint64_t index;
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__u64 index;
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/* Number of references to unmap */
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uint32_t count;
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__u32 count;
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};
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/*
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@ -67,11 +69,11 @@ struct ioctl_gntalloc_unmap_notify {
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* be cleared. Otherwise, it can be any byte in the page whose
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* notification we are adjusting.
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*/
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uint64_t index;
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__u64 index;
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/* Action(s) to take on unmap */
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uint32_t action;
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__u32 action;
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/* Event channel to notify */
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uint32_t event_channel_port;
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__u32 event_channel_port;
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};
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/* Clear (set to zero) the byte specified by index */
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@ -33,11 +33,13 @@
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#ifndef __LINUX_PUBLIC_GNTDEV_H__
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#define __LINUX_PUBLIC_GNTDEV_H__
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#include <linux/types.h>
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struct ioctl_gntdev_grant_ref {
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/* The domain ID of the grant to be mapped. */
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uint32_t domid;
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__u32 domid;
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/* The grant reference of the grant to be mapped. */
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uint32_t ref;
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__u32 ref;
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};
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/*
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@ -50,11 +52,11 @@ _IOC(_IOC_NONE, 'G', 0, sizeof(struct ioctl_gntdev_map_grant_ref))
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struct ioctl_gntdev_map_grant_ref {
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/* IN parameters */
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/* The number of grants to be mapped. */
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uint32_t count;
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uint32_t pad;
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__u32 count;
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__u32 pad;
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/* OUT parameters */
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/* The offset to be used on a subsequent call to mmap(). */
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uint64_t index;
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__u64 index;
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/* Variable IN parameter. */
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/* Array of grant references, of size @count. */
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struct ioctl_gntdev_grant_ref refs[1];
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@ -70,10 +72,10 @@ _IOC(_IOC_NONE, 'G', 1, sizeof(struct ioctl_gntdev_unmap_grant_ref))
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struct ioctl_gntdev_unmap_grant_ref {
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/* IN parameters */
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/* The offset was returned by the corresponding map operation. */
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uint64_t index;
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__u64 index;
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/* The number of pages to be unmapped. */
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uint32_t count;
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uint32_t pad;
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__u32 count;
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__u32 pad;
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};
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/*
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@ -93,13 +95,13 @@ _IOC(_IOC_NONE, 'G', 2, sizeof(struct ioctl_gntdev_get_offset_for_vaddr))
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struct ioctl_gntdev_get_offset_for_vaddr {
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/* IN parameters */
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/* The virtual address of the first mapped page in a range. */
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uint64_t vaddr;
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__u64 vaddr;
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/* OUT parameters */
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/* The offset that was used in the initial mmap() operation. */
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uint64_t offset;
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__u64 offset;
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/* The number of pages mapped in the VM area that begins at @vaddr. */
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uint32_t count;
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uint32_t pad;
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__u32 count;
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__u32 pad;
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};
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/*
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@ -113,7 +115,7 @@ _IOC(_IOC_NONE, 'G', 3, sizeof(struct ioctl_gntdev_set_max_grants))
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struct ioctl_gntdev_set_max_grants {
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/* IN parameter */
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/* The maximum number of grants that may be mapped at once. */
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uint32_t count;
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__u32 count;
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};
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/*
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@ -135,11 +137,11 @@ struct ioctl_gntdev_unmap_notify {
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* be cleared. Otherwise, it can be any byte in the page whose
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* notification we are adjusting.
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*/
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uint64_t index;
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__u64 index;
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/* Action(s) to take on unmap */
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uint32_t action;
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__u32 action;
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/* Event channel to notify */
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uint32_t event_channel_port;
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__u32 event_channel_port;
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};
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/* Clear (set to zero) the byte specified by index */
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