Messages in this thread | | | Date | Tue, 3 May 2011 08:33:01 -0400 | From | Konrad Rzeszutek Wilk <> | Subject | [GIT PULL] (xen) stable/bug-fixes-for-rc5 for 2.6.39-rc5. |
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Linus,
Please git pull
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git stable/bug-fixes-for-rc5
since git commit 8e10cd74342c7f5ce259cceca36f6eba084f5d58 Linus Torvalds (1) Linux 2.6.39-rc5
The git pull contains two fixes that fix the last remaining issue Linux 2.6.39 not booting with Xen. This particular git pull fixes the bootup regression introduced by "x86-64, mm: Put early page table high" (git commit 4b239f458c229de044d6905c2b0f9fe16ed9e01e). Stefano and Yinghai (author of the regression) have been working on patches fixing this regression when the patch was still in x86/mm-core before the 2.6.39 merge window openned.
But we haven't come up with an acceptable general solution yet, so this patchset provides a workaround for the problem.
There are couple of ways of fixing this: - use pvops hooks: http://marc.info/?i=1302607192-21355-2-git-send-email-stefano.stabellini@eu.citrix.com - have a workaround in Xen MMU's early bootup code (which is what this git pull has). - or remove the patch introducing the regression altogether.
Foremost important is to fix the regression, and the patches in the GIT pull achieve that. I want to remove this workaround patch when we hammer out more appropriate semantics for the page table creation - but that will take some time and the runway to do that in 2.6.39 is gone.
Hence asking for these two patches to be pulled.
Konrad Rzeszutek Wilk (1): xen/mmu: Add workaround "x86-64, mm: Put early page table high"
Stefano Stabellini (1): xen: mask_rw_pte mark RO all pagetable pages up to pgt_buf_top
arch/x86/xen/mmu.c | 125 +++++++++++++++++++++++++++++++++++++++++++++++++++- 1 files changed, 124 insertions(+), 1 deletions(-)
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