From mboxrd@z Thu Jan 1 00:00:00 1970 From: Juergen Gross Subject: Re: [Xen-devel] [RESEND Patch V3 00/15] xen: support pv-domains larger than 512GB Date: Mon, 04 May 2015 10:22:28 +0200 Message-ID: <55472C44.30202@suse.com> References: <1430720346-21063-1-git-send-email-jgross@suse.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1430720346-21063-1-git-send-email-jgross@suse.com> Sender: owner-linux-mm@kvack.org To: xen-devel@lists.xensource.com, konrad.wilk@oracle.com, david.vrabel@citrix.com, boris.ostrovsky@oracle.com, linux-mm@kvack.org List-Id: xen-devel@lists.xenproject.org Oops, just detected that I missed to send this to lkml, too. Will resend. Juergen On 05/04/2015 08:18 AM, Juergen Gross wrote: > Support 64 bit pv-domains with more than 512GB of memory. > > Tested with 64 bit dom0 on machines with 8GB and 1TB and 32 bit dom0 on a > 8GB machine. Conflicts between E820 map and different hypervisor populated > memory areas have been tested via a fake E820 map reserved area on the > 8GB machine. > > Changes in V3: > - rename xen_chk_e820_reserved() to xen_is_e820_reserved() as requested by > David Vrabel > - add __initdata tag to global variables in patch 10 > - move initrd conflict checking after reserving p2m memory (patch 11) > > Changes in V2: > - some clarifications and better explanations in commit messages > - add header changes of include/xen/interface/xen.h (patch 01) > - add wmb() when incrementing p2m_generation (patch 02) > - add new patch 03 (don't build mfn tree if tools don't need it) > - add new patch 06 (split counting of extra memory pages from remapping) > - add new patch 07 (check memory area against e820 map) > - replace early_iounmap() with early_memunmap() (patch 07->patch 08) > - rework patch 09 (check for kernel memory conflicting with memory layout) > - rework patch 10 (check pre-allocated page tables for conflict with memory map) > - combine old patches 08 and 11 into patch 11 > - add new patch 12 (provide early_memremap_ro to establish read-only mapping) > - rework old patch 12 (if p2m list located in to be remapped region delay > remapping) to copy p2m list in case of a conflict (now patch 13) > - correct Kconfig dependency (patch 13->14) > - don't limit dom0 to 512GB (patch 13->14) > - modify parameter parsing to work in very early boot (patch 13->14) > - add new patch 15 to do some cleanup > - remove old patch 05 (simplify xen_set_identity_and_remap() by using global > variables) > - remove old patch 08 (detect pre-allocated memory interfering with e820 map) > > > Juergen Gross (15): > xen: sync with xen headers > xen: save linear p2m list address in shared info structure > xen: don't build mfn tree if tools don't need it > xen: eliminate scalability issues from initial mapping setup > xen: move static e820 map to global scope > xen: split counting of extra memory pages from remapping > xen: check memory area against e820 map > xen: find unused contiguous memory area > xen: check for kernel memory conflicting with memory layout > xen: check pre-allocated page tables for conflict with memory map > xen: check for initrd conflicting with e820 map > mm: provide early_memremap_ro to establish read-only mapping > xen: move p2m list if conflicting with e820 map > xen: allow more than 512 GB of RAM for 64 bit pv-domains > xen: remove no longer needed p2m.h > > Documentation/kernel-parameters.txt | 7 + > arch/x86/include/asm/xen/interface.h | 96 +++++++- > arch/x86/include/asm/xen/page.h | 8 +- > arch/x86/xen/Kconfig | 20 +- > arch/x86/xen/mmu.c | 367 +++++++++++++++++++++++++++++-- > arch/x86/xen/p2m.c | 43 +++- > arch/x86/xen/p2m.h | 15 -- > arch/x86/xen/setup.c | 414 ++++++++++++++++++++++++++--------- > arch/x86/xen/xen-head.S | 2 + > arch/x86/xen/xen-ops.h | 6 + > include/asm-generic/early_ioremap.h | 2 + > include/asm-generic/fixmap.h | 3 + > include/xen/interface/xen.h | 10 +- > mm/early_ioremap.c | 11 + > 14 files changed, 822 insertions(+), 182 deletions(-) > delete mode 100644 arch/x86/xen/p2m.h > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org