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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-04 11:37:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-04 11:37:09 -0700 |
| commit | a96480723c287c502b02659f4b347aecaa651ea1 (patch) | |
| tree | 7abee4eb6d0d0b43103dc4f48554736d2b642bc2 /arch/x86/xen/time.c | |
| parent | a1be8edda4fe1f0a75007f26000a51436800869d (diff) | |
| parent | 3dbd8204af48d0da442f11ad39aa778a5fd462bf (diff) | |
| download | linux-a96480723c287c502b02659f4b347aecaa651ea1.tar.bz2 | |
Merge tag 'for-linus-4.12b-rc0b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from Juergen Gross:
"Xen fixes and featrues for 4.12. The main changes are:
- enable building the kernel with Xen support but without enabling
paravirtualized mode (Vitaly Kuznetsov)
- add a new 9pfs xen frontend driver (Stefano Stabellini)
- simplify Xen's cpuid handling by making use of cpu capabilities
(Juergen Gross)
- add/modify some headers for new Xen paravirtualized devices
(Oleksandr Andrushchenko)
- EFI reset_system support under Xen (Julien Grall)
- and the usual cleanups and corrections"
* tag 'for-linus-4.12b-rc0b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (57 commits)
xen: Move xen_have_vector_callback definition to enlighten.c
xen: Implement EFI reset_system callback
arm/xen: Consolidate calls to shutdown hypercall in a single helper
xen: Export xen_reboot
xen/x86: Call xen_smp_intr_init_pv() on BSP
xen: Revert commits da72ff5bfcb0 and 72a9b186292d
xen/pvh: Do not fill kernel's e820 map in init_pvh_bootparams()
xen/scsifront: use offset_in_page() macro
xen/arm,arm64: rename __generic_dma_ops to xen_get_dma_ops
xen/arm,arm64: fix xen_dma_ops after 815dd18 "Consolidate get_dma_ops..."
xen/9pfs: select CONFIG_XEN_XENBUS_FRONTEND
x86/cpu: remove hypervisor specific set_cpu_features
vmware: set cpu capabilities during platform initialization
x86/xen: use capabilities instead of fake cpuid values for xsave
x86/xen: use capabilities instead of fake cpuid values for x2apic
x86/xen: use capabilities instead of fake cpuid values for mwait
x86/xen: use capabilities instead of fake cpuid values for acpi
x86/xen: use capabilities instead of fake cpuid values for acc
x86/xen: use capabilities instead of fake cpuid values for mtrr
x86/xen: use capabilities instead of fake cpuid values for aperf
...
Diffstat (limited to 'arch/x86/xen/time.c')
| -rw-r--r-- | arch/x86/xen/time.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index 7a3089285c59..090c7eb4dca9 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -436,6 +436,14 @@ static void xen_hvm_setup_cpu_clockevents(void) void __init xen_hvm_init_time_ops(void) { + /* + * vector callback is needed otherwise we cannot receive interrupts + * on cpu > 0 and at this point we don't know how many cpus are + * available. + */ + if (!xen_have_vector_callback) + return; + if (!xen_feature(XENFEAT_hvm_safe_pvclock)) { printk(KERN_INFO "Xen doesn't support pvclock on HVM," "disable pv timer\n"); |