similar to: balloon question

Hi all, this patch series enables xen-swiotlb on arm and arm64. It has been heavily reworked compared to the previous versions in order to achieve better performances and to address review comments. We are not using dma_mark_clean to ensure coherency anymore. We call the platform implementation of map_page and unmap_page. We assume that dom0 has been mapped 1:1 (physical address == machine

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);

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 all, I am using Xen 2.0.7. I have Broadcom NetXtreme BCM5704 Gigabit Ethernet (rev 02) cards which support frames greater than 1500. However when I boot into Xen and try to set the MTU to anything higher than 1500 (e.g., 4000, 8000 etc) I get a segmentation fault. After this fault, every command fails with a segmentation fault. I saw a similar bug report posted here:

Enhance adjust_managed_page_count() to adjust totalhigh_pages for highmem pages. And change code which directly adjusts totalram_pages to use adjust_managed_page_count() because it adjusts totalram_pages, totalhigh_pages and zone->managed_pages altogether in a safe way. Remove inc_totalhigh_pages() and dec_totalhigh_pages() from xen/balloon driver bacause adjust_managed_page_count() has

Enhance adjust_managed_page_count() to adjust totalhigh_pages for highmem pages. And change code which directly adjusts totalram_pages to use adjust_managed_page_count() because it adjusts totalram_pages, totalhigh_pages and zone->managed_pages altogether in a safe way. Remove inc_totalhigh_pages() and dec_totalhigh_pages() from xen/balloon driver bacause adjust_managed_page_count() has

Enhance adjust_managed_page_count() to adjust totalhigh_pages for highmem pages. And change code which directly adjusts totalram_pages to use adjust_managed_page_count() because it adjusts totalram_pages, totalhigh_pages and zone->managed_pages altogether in a safe way. Remove inc_totalhigh_pages() and dec_totalhigh_pages() from xen/balloon driver bacause adjust_managed_page_count() has

The ARM platform has no concept of PVMMU and therefor no HYPERVISOR_update_va_mapping et al. Allow this code to be compiled out when not required. In some similar situations (e.g. P2M) we have defined dummy functions to avoid this, however I think we can/should draw the line at dummying out actual hypercalls. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> --- arch/x86/xen/Kconfig

Hi, I am following http://xenbits.xen.org/docs/unstable/misc/vtpm.txt, but I''m having some problems when I try to start vtpmmgr-stubdom I''m using Xen 4.3 on Ubuntu 12.04 and I have a physical TPM. The config file for vTPM manager is: kernel="/usr/local/lib/xen/boot/vtpmmgr-stubdom.gz" memory=16 disk=["file:/var/vtpmmgr-stubdom.img,hda,w"]

Hi community, there are some problems to start vTPM vtpm-stubdom following docs/misc/vtpm.txt. When I start vtpm-stbdom, the vtpmmgr-stubdom will print out: === ERROR[VTPM]: LoadKey failure: Unrecognized uuid! 69743ae0-9d4a-4ad6-9819-e602085b6792 ERROR[VTPM]: Failed to load key ERROR in vtpmmgr_LoadHashKey at vtpm_cmd_handler.c:78 code: TPM_BAD_PARAMETER. === I start vtpmmgr-stubdom with

Hi community, there are some problems to start vTPM vtpm-stubdom following docs/misc/vtpm.txt. When I start vtpm-stbdom, the vtpmmgr-stubdom will print out: === ERROR[VTPM]: LoadKey failure: Unrecognized uuid! 69743ae0-9d4a-4ad6-9819-e602085b6792 ERROR[VTPM]: Failed to load key ERROR in vtpmmgr_LoadHashKey at vtpm_cmd_handler.c:78 code: TPM_BAD_PARAMETER. === I start vtpmmgr-stubdom with

make balloon driver not return pages which are in [xen_start_info->nr_pages, max_pfn] on ia64. On ia64 memory might be assigned sparsely. In that case xen_start_info->nr_pages and max_pfn doesn''t match while pages which are in [xen_start_info->nr_pages, max_pfn] are used. -- yamahata _______________________________________________ Xen-devel mailing list

Hi, Here is the third version of memory hotplug support for Xen guests patch. This one cleanly applies to git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git repository, xen/memory-hotplug head. On Fri, Aug 06, 2010 at 04:03:18PM +0400, Vasiliy G Tolstov wrote: [...] > Testing on sles 11 sp1 and opensuse 11.3. On results - send e-mail.. Thx. On Fri, Aug 06, 2010 at 12:34:08PM

Hi, I am sending this e-mail once again because it probably has been lost in abyss of Xen-devel/LKLM list. Here is the second version of memory hotplug support for Xen guests patch. This one cleanly applies to git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git repository, xen/memory-hotplug head. Changes: - /sys/devices/system/memory/probe interface has been removed;

Hi Folks, I need some large chunk of physical memory, so I allocate it early using alloc_bootmem_low_pages and use it later (akin to bigphysarea patch). The trouble I am having is the following. Suppose the virtual address for the memory area is 0xc14d6000. After xen_create_contiguous_region call, I do a virt_to_bus and the bus address comes out to be 0x18000000. So far so good. However,

Hi, I hope I''m right here. If not then please point me in the right direction. My problem in short: I have problems using (pinning, mmu_update) physical pages from 0x900000 to 0xB1000 usualy. I''m writing my own little amd64 64bit toy kernel (based on Mini-OS as starting point) for xen and I run into problems with the way the start of day sets up the physical pages. My kernel

Hi, I‘m trying to install vTPM based on Xen-4.2.2, linux-kernel 3.9.1 (Dom0) and TPM emulator. However, I cannot find the TPM backed driver in this version of Dom0 linux kernel. There is no CONFIG_XEN_TPMDEV_BACKEND in the kernel config file. The config file for Dom0 is attached. Maybe it provides some useful information. So, how to install a Xen TPM backend driver in the Dom0 linux-kernel.

Hi, I have noticed that, in the code of linux/drivers/xen/balloon.c, there exists the snippet as this: static int __init balloon_init(void) { unsigned long pfn; struct page *page; if (!xen_pv_domain()) return -ENODEV; ..... } Does it means the driver will not work in HVM? If so, where is the HVN-enabled code for that? 2010-11-16 Rui Chu _______________________________________________

On 9/15/20 10:36 PM, Christoph Hellwig wrote: > On Tue, Sep 15, 2020 at 09:39:47AM -0700, Ralph Campbell wrote: >>> I don't think any of the three ->page_free instances even cares about >>> the page refcount. >>> >> Not true. The page_free() callback records the page is free by setting >> a bit or putting the page on a free list but when it

On 9/15/20 9:29 AM, Christoph Hellwig wrote: > On Mon, Sep 14, 2020 at 04:53:25PM -0700, Ralph Campbell wrote: >> Since set_page_refcounted() is defined in mm_interal.h I would have to >> move the definition to someplace like page_ref.h or have the drivers >> cal init_page_count() or set_page_count() since get_page() calls >> VM_BUG_ON_PAGE() if refcount == 0. >>