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Re: [PATCH v7 00/11] grub-xen: support booting huge pv-domains
From: |
Juergen Gross |
Subject: |
Re: [PATCH v7 00/11] grub-xen: support booting huge pv-domains |
Date: |
Tue, 29 Mar 2016 11:52:52 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.7.0 |
On 03/03/16 10:38, Juergen Gross wrote:
> The Xen hypervisor supports starting a dom0 with large memory (up to
> the TB range) by not including the initrd and p2m list in the initial
> kernel mapping. Especially the p2m list can grow larger than the
> available virtual space in the initial mapping.
>
> The started kernel is indicating the support of each feature via
> elf notes.
>
> This series enables grub-xen to do the same as the hypervisor.
>
> Tested with:
> - 32 bit domU (kernel not supporting unmapped initrd)
> - 32 bit domU (kernel supporting unmapped initrd)
> - 1 GB 64 bit domU (kernel supporting unmapped initrd, not p2m)
> - 1 GB 64 bit domU (kernel supporting unmapped initrd and p2m)
> - 900GB 64 bit domU (kernel supporting unmapped initrd and p2m)
There has been no reaction for these patches for nearly 4 weeks now.
Neither has there been any response regarding my request to include
it in 2.02.
I'd really appreciate some kind of comment.
Juergen
>
> Changes in V7:
> - patch 9: set initrd size once instead of in if and else clause as requested
> by Daniel Kiper
> - patch 10: add GRUB_PACKED attribute to structure, drop alignments in
> assembly
> files as requested by Daniel Kiper
>
> Changes in V6:
> - patch 9: rename grub_xen_alloc_final() as requested by Daniel Kiper
>
> Changes in V5:
> - patch 2: set grub_errno to GRUB_ERR_NONE to avoid false error reports as
> requested by Daniel Kiper
> - patch 9: let call grub_xen_alloc_final() all subfunctions unconditionally
> and let them decide whether they need to do anything as suggested by
> Daniel Kiper
>
> Changes in V4:
> - split patch 1 into two patches as requested by Daniel Kiper
> - patch 9 (was 8): rename grub_xen_alloc_end() as requested by Daniel Kiper
> - patch 10 (was 9): align variables in assembly sources,
> use separate structure define as requested by Daniel Kiper
>
> Changes in V3:
> - added new patch 1 (free memory in case of error) as requested by
> Daniel Kiper
> - added new patch 2 (avoid global variables) as requested by Daniel Kiper
> - added new patch 3 (use constants for elf notes) as requested by Daniel Kiper
> - added new patch 4 (sync with new Xen headers) in order to use constants
> in assembly code
> - modified patch 9 (was patch 5) to use constants instead of numbers as
> requested by Daniel Kiper
>
> Changes in V2:
> - rebased patch 5 to current master
>
> Juergen Gross (11):
> xen: make xen loader callable multiple times
> xen: avoid memleaks on error
> xen: reduce number of global variables in xen loader
> xen: add elfnote.h to avoid using numbers instead of constants
> xen: synchronize xen header
> xen: factor out p2m list allocation into separate function
> xen: factor out allocation of special pages into separate function
> xen: factor out allocation of page tables into separate function
> xen: add capability to load initrd outside of initial mapping
> xen: modify page table construction
> xen: add capability to load p2m list outside of kernel mapping
>
> grub-core/lib/i386/xen/relocator.S | 87 ++--
> grub-core/lib/x86_64/xen/relocator.S | 134 +++---
> grub-core/lib/xen/relocator.c | 28 +-
> grub-core/loader/i386/xen.c | 778
> +++++++++++++++++++++++------------
> grub-core/loader/i386/xen_fileXX.c | 45 +-
> include/grub/i386/memory.h | 7 +
> include/grub/xen/relocator.h | 6 +-
> include/grub/xen_file.h | 3 +
> include/xen/arch-x86/xen-x86_32.h | 22 +-
> include/xen/arch-x86/xen-x86_64.h | 8 +-
> include/xen/elfnote.h | 281 +++++++++++++
> include/xen/xen.h | 125 ++++--
> 12 files changed, 1076 insertions(+), 448 deletions(-)
> create mode 100644 include/xen/elfnote.h
>
- [PATCH v7 06/11] xen: factor out p2m list allocation into separate function, (continued)
- [PATCH v7 06/11] xen: factor out p2m list allocation into separate function, Juergen Gross, 2016/03/03
- [PATCH v7 04/11] xen: add elfnote.h to avoid using numbers instead of constants, Juergen Gross, 2016/03/03
- [PATCH v7 07/11] xen: factor out allocation of special pages into separate function, Juergen Gross, 2016/03/03
- [PATCH v7 11/11] xen: add capability to load p2m list outside of kernel mapping, Juergen Gross, 2016/03/03
- [PATCH v7 05/11] xen: synchronize xen header, Juergen Gross, 2016/03/03
- [PATCH v7 02/11] xen: avoid memleaks on error, Juergen Gross, 2016/03/03
- [PATCH v7 03/11] xen: reduce number of global variables in xen loader, Juergen Gross, 2016/03/03
- [PATCH v7 08/11] xen: factor out allocation of page tables into separate function, Juergen Gross, 2016/03/03
- [PATCH v7 10/11] xen: modify page table construction, Juergen Gross, 2016/03/03
- Re: [PATCH v7 00/11] grub-xen: support booting huge pv-domains, Daniel Kiper, 2016/03/03
- Re: [PATCH v7 00/11] grub-xen: support booting huge pv-domains,
Juergen Gross <=