xen: make the ballon driver work for hvm domains (53d5522c) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/xen/balloon.c

+9 −5

Original line number	Diff line number	Diff line
		@@ -232,7 +232,7 @@ static int increase_reservation(unsigned long nr_pages)
		set_phys_to_machine(pfn, frame_list[i]);

		/* Link back into the page tables if not highmem. */
		if (pfn < max_low_pfn) {
		if (!xen_hvm_domain() && pfn < max_low_pfn) {
		int ret;
		ret = HYPERVISOR_update_va_mapping(
		(unsigned long)__va(pfn << PAGE_SHIFT),
		@@ -280,7 +280,7 @@ static int decrease_reservation(unsigned long nr_pages)

		scrub_page(page);

		if (!PageHighMem(page)) {
		if (!xen_hvm_domain() && !PageHighMem(page)) {
		ret = HYPERVISOR_update_va_mapping(
		(unsigned long)__va(pfn << PAGE_SHIFT),
		__pte_ma(0), 0);
		@@ -392,15 +392,19 @@ static struct notifier_block xenstore_notifier;

		static int __init balloon_init(void)
		{
		unsigned long pfn, extra_pfn_end;
		unsigned long pfn, nr_pages, extra_pfn_end;
		struct page *page;

		if (!xen_pv_domain())
		if (!xen_domain())
		return -ENODEV;

		pr_info("xen_balloon: Initialising balloon driver.\n");

		balloon_stats.current_pages = min(xen_start_info->nr_pages, max_pfn);
		if (xen_pv_domain())
		nr_pages = xen_start_info->nr_pages;
		else
		nr_pages = max_pfn;
		balloon_stats.current_pages = min(nr_pages, max_pfn);
		balloon_stats.target_pages = balloon_stats.current_pages;
		balloon_stats.balloon_low = 0;
		balloon_stats.balloon_high = 0;