diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-04 11:37:09 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-04 11:37:09 -0700 |
commit | a96480723c287c502b02659f4b347aecaa651ea1 (patch) | |
tree | 7abee4eb6d0d0b43103dc4f48554736d2b642bc2 /drivers/xen/balloon.c | |
parent | a1be8edda4fe1f0a75007f26000a51436800869d (diff) | |
parent | 3dbd8204af48d0da442f11ad39aa778a5fd462bf (diff) |
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 'drivers/xen/balloon.c')
-rw-r--r-- | drivers/xen/balloon.c | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index a6d4378eb8d9..50dcb68d8070 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -709,6 +709,7 @@ void free_xenballooned_pages(int nr_pages, struct page **pages) } EXPORT_SYMBOL(free_xenballooned_pages); +#ifdef CONFIG_XEN_PV static void __init balloon_add_region(unsigned long start_pfn, unsigned long pages) { @@ -732,19 +733,22 @@ static void __init balloon_add_region(unsigned long start_pfn, balloon_stats.total_pages += extra_pfn_end - start_pfn; } +#endif static int __init balloon_init(void) { - int i; - if (!xen_domain()) return -ENODEV; pr_info("Initialising balloon driver\n"); +#ifdef CONFIG_XEN_PV balloon_stats.current_pages = xen_pv_domain() ? min(xen_start_info->nr_pages - xen_released_pages, max_pfn) : get_num_physpages(); +#else + balloon_stats.current_pages = get_num_physpages(); +#endif balloon_stats.target_pages = balloon_stats.current_pages; balloon_stats.balloon_low = 0; balloon_stats.balloon_high = 0; @@ -761,14 +765,20 @@ static int __init balloon_init(void) register_sysctl_table(xen_root); #endif - /* - * Initialize the balloon with pages from the extra memory - * regions (see arch/x86/xen/setup.c). - */ - for (i = 0; i < XEN_EXTRA_MEM_MAX_REGIONS; i++) - if (xen_extra_mem[i].n_pfns) - balloon_add_region(xen_extra_mem[i].start_pfn, - xen_extra_mem[i].n_pfns); +#ifdef CONFIG_XEN_PV + { + int i; + + /* + * Initialize the balloon with pages from the extra memory + * regions (see arch/x86/xen/setup.c). + */ + for (i = 0; i < XEN_EXTRA_MEM_MAX_REGIONS; i++) + if (xen_extra_mem[i].n_pfns) + balloon_add_region(xen_extra_mem[i].start_pfn, + xen_extra_mem[i].n_pfns); + } +#endif return 0; } |