search for: clearpagereserved

...c_totalhigh_pages(); - } else + else balloon_stats.balloon_low--; - totalram_pages++; + adjust_managed_page_count(page, 1); return page; } @@ -372,9 +361,7 @@ static enum bp_state increase_reservation(unsigned long nr_pages) #endif /* Relinquish the page back to the allocator. */ - ClearPageReserved(page); - init_page_count(page); - __free_page(page); + __free_reserved_page(page); } balloon_stats.current_pages += rc; diff --git a/mm/hugetlb.c b/mm/hugetlb.c index f8feeec..95c5a6b 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1246,7 +1246,7 @@ static void __init gather_bootmem_preal...

...c_totalhigh_pages(); - } else + else balloon_stats.balloon_low--; - totalram_pages++; + adjust_managed_page_count(page, 1); return page; } @@ -372,9 +361,7 @@ static enum bp_state increase_reservation(unsigned long nr_pages) #endif /* Relinquish the page back to the allocator. */ - ClearPageReserved(page); - init_page_count(page); - __free_page(page); + __free_reserved_page(page); } balloon_stats.current_pages += rc; diff --git a/mm/hugetlb.c b/mm/hugetlb.c index f8feeec..95c5a6b 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1246,7 +1246,7 @@ static void __init gather_bootmem_preal...

...c_totalhigh_pages(); - } else + else balloon_stats.balloon_low--; - totalram_pages++; + adjust_managed_page_count(page, 1); return page; } @@ -372,9 +361,7 @@ static enum bp_state increase_reservation(unsigned long nr_pages) #endif /* Relinquish the page back to the allocator. */ - ClearPageReserved(page); - init_page_count(page); - __free_page(page); + __free_reserved_page(page); } balloon_stats.current_pages += rc; diff --git a/mm/hugetlb.c b/mm/hugetlb.c index f8feeec..95c5a6b 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1246,7 +1246,7 @@ static void __init gather_bootmem_preal...

Running with Xen option dom0_mem=6G and kernel option mem=8G, I would have expected that I would see the system with a 2G balloon right after boot. However, the balloon is empty. Briefly looking at this, it would seem to me that, with all pages being reserved when the system starts and only the populated ones getting the reserved status cleared in __free_pages_bootmem(), the condition to put pages

...if (xen_pv_domain() && !PageHighMem(page) && !xen_feature(XENFEAT_auto_translated_physmap)) { @@ -371,6 +372,7 @@ static enum bp_state increase_reservation(unsigned long nr_pages) 0); BUG_ON(ret); } +#endif /* Relinquish the page back to the allocator. */ ClearPageReserved(page); @@ -419,6 +421,7 @@ static enum bp_state decrease_reservation(unsigned long nr_pages, gfp_t gfp) scrub_page(page); +#ifdef CONFIG_XEN_HAVE_PVMMU if (xen_pv_domain() && !PageHighMem(page)) { if (!xen_feature(XENFEAT_auto_translated_physmap)) { ret = HYPERVISOR_updat...

...c_totalhigh_pages(); - } else + else balloon_stats.balloon_low--; - totalram_pages++; + adjust_managed_page_count(page, 1); return page; } @@ -374,9 +363,7 @@ static enum bp_state increase_reservation(unsigned long nr_pages) #endif /* Relinquish the page back to the allocator. */ - ClearPageReserved(page); - init_page_count(page); - __free_page(page); + __free_reserved_page(page); } balloon_stats.current_pages += rc; diff --git a/mm/hugetlb.c b/mm/hugetlb.c index f8feeec..95c5a6b 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1246,7 +1246,7 @@ static void __init gather_bootmem_preal...

...c_totalhigh_pages(); - } else + else balloon_stats.balloon_low--; - totalram_pages++; + adjust_managed_page_count(page, 1); return page; } @@ -374,9 +363,7 @@ static enum bp_state increase_reservation(unsigned long nr_pages) #endif /* Relinquish the page back to the allocator. */ - ClearPageReserved(page); - init_page_count(page); - __free_page(page); + __free_reserved_page(page); } balloon_stats.current_pages += rc; diff --git a/mm/hugetlb.c b/mm/hugetlb.c index f8feeec..95c5a6b 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1246,7 +1246,7 @@ static void __init gather_bootmem_preal...

...c_totalhigh_pages(); - } else + else balloon_stats.balloon_low--; - totalram_pages++; + adjust_managed_page_count(page, 1); return page; } @@ -374,9 +363,7 @@ static enum bp_state increase_reservation(unsigned long nr_pages) #endif /* Relinquish the page back to the allocator. */ - ClearPageReserved(page); - init_page_count(page); - __free_page(page); + __free_reserved_page(page); } balloon_stats.current_pages += rc; diff --git a/mm/hugetlb.c b/mm/hugetlb.c index f8feeec..95c5a6b 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1246,7 +1246,7 @@ static void __init gather_bootmem_preal...

...01 17:18:20.000000000 -0500 @@ -787,7 +787,7 @@ void free_init_pages(char *what, unsigne unsigned long addr; BUG_ON(begin != ALIGN(begin, PAGE_SIZE)); - BUG_ON(end != ALIGN(end, PAGE_SIZE)); + WARN_ON(end != ALIGN(end, PAGE_SIZE)); for (addr = begin; addr < end; addr += PAGE_SIZE) { ClearPageReserved(virt_to_page(addr));

...ons(-) diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index f225cb1..6c6f884 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -875,6 +875,7 @@ int gnttab_copy_grant_page(grant_ref_t ref, struct page **pagep) SetPageForeign(page, gnttab_page_free); ClearPageReserved(page); + page->private = 0UL; page->mapping = NULL; out: -- 1.5.6.5 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

...01 17:18:20.000000000 -0500 @@ -787,7 +787,7 @@ void free_init_pages(char *what, unsigne unsigned long addr; BUG_ON(begin != ALIGN(begin, PAGE_SIZE)); - BUG_ON(end != ALIGN(end, PAGE_SIZE)); + WARN_ON(end != ALIGN(end, PAGE_SIZE)); for (addr = begin; addr < end; addr += PAGE_SIZE) { ClearPageReserved(virt_to_page(addr));

...INE: if (!vm->hotplug_active) break; @@ -666,8 +720,11 @@ static void virtio_mem_set_fake_offline(unsigned long pfn, struct page *page = pfn_to_page(pfn); __SetPageOffline(page); - if (!onlined) + if (!onlined) { SetPageDirty(page); + /* FIXME: remove after cleanups */ + ClearPageReserved(page); + } } } @@ -1717,6 +1774,11 @@ static void virtio_mem_remove(struct virtio_device *vdev) rc = virtio_mem_mb_remove(vm, mb_id); BUG_ON(rc); } + /* + * After we unregistered our callbacks, user space can no longer + * offline partially plugged online memory blocks. No need to w...

hi I try to understand the code of balloon ,and got confused about the following parts of code: static int decrease_reservation(unsigned long nr_pages) { .... if (!PageHighMem(page)) { v = phys_to_virt(pfn << PAGE_SHIFT); scrub_pages(v, 1); ret = HYPERVISOR_update_va_mapping( (unsigned long)v, __pte_ma(0), 0);

...ined type 'struct page' /usr/src/zaptel-1.4.0/zttranscode.c:210: error: increment of pointer to unknown structure /usr/src/zaptel-1.4.0/zttranscode.c:210: error: arithmetic on pointer to an incomplete type /usr/src/zaptel-1.4.0/zttranscode.c:211: error: implicit declaration of function 'ClearPageReserved' /usr/src/zaptel-1.4.0/zttranscode.c: In function 'zt_tc_mmap': /usr/src/zaptel-1.4.0/zttranscode.c:370: error: dereferencing pointer to incomplete type /usr/src/zaptel-1.4.0/zttranscode.c:376: error: dereferencing pointer to incomplete type /usr/src/zaptel-1.4.0/zttranscode.c:376: erro...

The original goal of this patchset is to fix the bug reported by https://bugzilla.kernel.org/show_bug.cgi?id=53501 Now it has also been expanded to reduce common code used by memory initializion. This is the first part, which applies to v3.9-rc1. It introduces following common helper functions to simplify free_initmem() and free_initrd_mem() on different architectures:

The original goal of this patchset is to fix the bug reported by https://bugzilla.kernel.org/show_bug.cgi?id=53501 Now it has also been expanded to reduce common code used by memory initializion. This is the first part, which applies to v3.9-rc1. It introduces following common helper functions to simplify free_initmem() and free_initrd_mem() on different architectures:

We have implemented hugepage support for guests in following manner In our implementation we added a parameter hugepage_num which is specified in the config file of the DomU. It is the number of hugepages that the guest is guaranteed to receive whenever the kernel asks for hugepage by using its boot time parameter or reserving after booting (eg. Using echo XX > /proc/sys/vm/nr_hugepages).

This series implements ballooning for Xen on ARM and builds and Mukesh''s PVH privcmd stuff to implement foreign page mapping on ARM, replacing the old "HACK: initial (very hacky) XENMAPSPACE_gmfn_foreign" patch. The baseline is a bit complex, it is basically Stefano''s xenarm-forlinus branch (commit bbd6eb29214e) merged with Konrad''s linux-next-pvh branch

Hi, This set of patches contains initial kexec/kdump implementation for Xen v2 (previous version were posted to few people by mistake; sorry for that). Currently only dom0 is supported, however, almost all infrustructure required for domU support is ready. Jan Beulich suggested to merge Xen x86 assembler code with baremetal x86 code. This could simplify and reduce a bit size of kernel code.

Hi, This set of patches contains initial kexec/kdump implementation for Xen v2 (previous version were posted to few people by mistake; sorry for that). Currently only dom0 is supported, however, almost all infrustructure required for domU support is ready. Jan Beulich suggested to merge Xen x86 assembler code with baremetal x86 code. This could simplify and reduce a bit size of kernel code.