kernel/linux.git/include/xen/interface/xen.h, branch v6.12.80

xen/x86: obtain upper 32 bits of video frame buffer address for Dom0

2022-01-06T07:55:34+00:00

The hypervisor has been supplying this information for a couple of major releases. Make use of it. The need to set a flag in the capabilities field also points out that the prior setting of that field from the hypervisor interface's gbl_caps one was wrong, so that code gets deleted (there's also no equivalent of this in native boot code). Signed-off-by: Jan Beulich Reviewed-by: Boris Ostrovsky Link: https://lore.kernel.org/r/a3df8bf3-d044-b7bb-3383-cd5239d6d4af@suse.com Signed-off-by: Juergen Gross

xen: fix wrong SPDX headers of Xen related headers

2021-11-02T12:45:44+00:00

Commit b24413180f5600 ("License cleanup: add SPDX GPL-2.0 license identifier to files with no license") was meant to do a tree-wide cleanup for files without any license information by adding a SPDX GPL-2.0 line to them. Unfortunately this was applied even to several Xen-related headers which have been originally under the MIT license, but obviously have been copied to the Linux tree from the Xen project without keeping the license boiler plate as required. Correct that by changing the license of those files back to "MIT". Some files still contain the MIT license text. Replace that by the related SPDX line. Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky Link: https://lore.kernel.org/r/20211015143312.29900-1-jgross@suse.com Signed-off-by: Boris Ostrovsky

xen: add wc_sec_hi to struct shared_info

2021-02-04T14:19:38+00:00

Xen added this in 2015 (Xen 4.6). On x86_64 and Arm it fills what was previously a 32-bit hole in the generic shared_info structure; on i386 it had to go at the end of struct arch_shared_info. Signed-off-by: David Woodhouse

xen/privcmd: add IOCTL_PRIVCMD_MMAP_RESOURCE

2018-05-14T13:25:37+00:00

My recent Xen patch series introduces a new HYPERVISOR_memory_op to support direct priv-mapping of certain guest resources (such as ioreq pages, used by emulators) by a tools domain, rather than having to access such resources via the guest P2M. This patch adds the necessary infrastructure to the privcmd driver and Xen MMU code to support direct resource mapping. NOTE: The adjustment in the MMU code is partially cosmetic. Xen will now allow a PV tools domain to map guest pages either by GFN or MFN, thus the term 'mfn' has been swapped for 'pfn' in the lower layers of the remap code. Signed-off-by: Paul Durrant Reviewed-by: Boris Ostrovsky Signed-off-by: Juergen Gross

xen/privcmd: Add IOCTL_PRIVCMD_DM_OP

2017-02-14T20:13:43+00:00

Recently a new dm_op[1] hypercall was added to Xen to provide a mechanism for restricting device emulators (such as QEMU) to a limited set of hypervisor operations, and being able to audit those operations in the kernel of the domain in which they run. This patch adds IOCTL_PRIVCMD_DM_OP as gateway for __HYPERVISOR_dm_op. NOTE: There is no requirement for user-space code to bounce data through locked memory buffers (as with IOCTL_PRIVCMD_HYPERCALL) since privcmd has enough information to lock the original buffers directly. [1] http://xenbits.xen.org/gitweb/?p=xen.git;a=commit;h=524a98c2 Signed-off-by: Paul Durrant Acked-by: Stefano Stabellini Signed-off-by: Boris Ostrovsky

xen: update xen headers

2016-07-06T09:42:13+00:00

Update some Xen headers to be able to use new functionality. Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky Reviewed-by: Stefano Stabellini Signed-off-by: David Vrabel

xen: rename dom0_op to platform_op

2015-12-21T14:40:55+00:00

The dom0_op hypercall has been renamed to platform_op since Xen 3.2, which is ancient, and modern upstream Linux kernels cannot run as dom0 and it anymore anyway. Signed-off-by: Stefano Stabellini Reviewed-by: Boris Ostrovsky

xen/PMU: Initialization code for Xen PMU

2015-08-20T11:25:20+00:00

Map shared data structure that will hold CPU registers, VPMU context, V/PCPU IDs of the CPU interrupted by PMU interrupt. Hypervisor fills this information in its handler and passes it to the guest for further processing. Set up PMU VIRQ. Now that perf infrastructure will assume that PMU is available on a PV guest we need to be careful and make sure that accesses via RDPMC instruction don't cause fatal traps by the hypervisor. Provide a nop RDPMC handler. For the same reason avoid issuing a warning on a write to APIC's LVTPC. Both of these will be made functional in later patches. Signed-off-by: Boris Ostrovsky Reviewed-by: David Vrabel Signed-off-by: David Vrabel

xen/PMU: Sysfs interface for setting Xen PMU mode

2015-08-20T11:24:26+00:00

Set Xen's PMU mode via /sys/hypervisor/pmu/pmu_mode. Add XENPMU hypercall. Signed-off-by: Boris Ostrovsky Reviewed-by: Konrad Rzeszutek Wilk Signed-off-by: David Vrabel

xen: sync with xen headers

2015-08-20T11:24:16+00:00

Use the newest headers from the xen tree to get some new structure layouts. Signed-off-by: Juergen Gross Reviewed-by: David Vrabel Acked-by: Konrad Rzeszutek Wilk Signed-off-by: David Vrabel