similar to: [PATCH 1/5] Add pagetable allocation notifiers

Is there any real use in having a ctor/dtor for the pgd cache? Given that all pgd allocation happens via pgd_alloc/pgd_free, why not just fold the [cd]tor in? I'm asking because Xen wants pgd[3] to be unshared in the PAE case, and it looks to me like the easiest way to handle that is by making pgd_alloc/free pv-ops and doing the appropriate thing in the Xen code. Would need to sort out the

Is there any real use in having a ctor/dtor for the pgd cache? Given that all pgd allocation happens via pgd_alloc/pgd_free, why not just fold the [cd]tor in? I'm asking because Xen wants pgd[3] to be unshared in the PAE case, and it looks to me like the easiest way to handle that is by making pgd_alloc/free pv-ops and doing the appropriate thing in the Xen code. Would need to sort out the

Ok, the use of "1 + " and subtraction of one for PAE PDPEs has confused many people now. Make it explicit what is going on and why anding with PAGE_MASK is a better idea to strip these bits. Signed-off-by: Zachary Amsden <zach@vmware.com> Depends-on: add-pgtable-allocation-notifiers Index: linux-2.6.13/arch/i386/mm/pgtable.c

Ok, the use of "1 + " and subtraction of one for PAE PDPEs has confused many people now. Make it explicit what is going on and why anding with PAGE_MASK is a better idea to strip these bits. Signed-off-by: Zachary Amsden <zach@vmware.com> Depends-on: add-pgtable-allocation-notifiers Index: linux-2.6.13/arch/i386/mm/pgtable.c

The VMI backend uses explicit page type notification to track shadow page tables. The allocation of page table roots is especially tricky. We want to clone the root for non-PAE mode while it is protected under the pgd lock. Signed-off-by: Zachary Amsden <zach@vmware.com> =================================================================== --- a/arch/i386/kernel/paravirt.c +++

The VMI backend uses explicit page type notification to track shadow page tables. The allocation of page table roots is especially tricky. We want to clone the root for non-PAE mode while it is protected under the pgd lock. Signed-off-by: Zachary Amsden <zach@vmware.com> =================================================================== --- a/arch/i386/kernel/paravirt.c +++

The VMI backend uses explicit page type notification to track shadow page tables. The allocation of page table roots is especially tricky. We need to clone the root for non-PAE mode while it is protected under the pgd lock to correctly copy the shadow. We don't need to allocate pgds in PAE mode, (PDPs in Intel terminology) as they only have 4 entries, and are cached entirely by the

The VMI backend uses explicit page type notification to track shadow page tables. The allocation of page table roots is especially tricky. We need to clone the root for non-PAE mode while it is protected under the pgd lock to correctly copy the shadow. We don't need to allocate pgds in PAE mode, (PDPs in Intel terminology) as they only have 4 entries, and are cached entirely by the

Add hooks that the hypervisor can use to establish writable and non-writable pages for LDT pages. I made these parallel the page flags as defined in include/linux/page-flags.h, since the flag mechanism is very similar to the hypercall page flagging, and extended easily later to include PT, PD, PDP, GDT, etc. Patch-against: 2.6.13-rc5-mm1 Patch-keys: i386 ldt paravirt xen Signed-off-by: Zachary

Add hooks that the hypervisor can use to establish writable and non-writable pages for LDT pages. I made these parallel the page flags as defined in include/linux/page-flags.h, since the flag mechanism is very similar to the hypercall page flagging, and extended easily later to include PT, PD, PDP, GDT, etc. Patch-against: 2.6.13-rc5-mm1 Patch-keys: i386 ldt paravirt xen Signed-off-by: Zachary

This highly technical change allows the kernel to jump atop the Eiffel Tower, fly with acceleration fifty times that of a space shuttle, and ingest 15 times its own weight. Patch-subject: Whitespace cleanup in pageattr.c Depends-on: add-pgtable-allocation-notifiers Signed-off-by: Zachary Amsden <zach@vmware.com> Index: linux-2.6.13/arch/i386/mm/pageattr.c

This highly technical change allows the kernel to jump atop the Eiffel Tower, fly with acceleration fifty times that of a space shuttle, and ingest 15 times its own weight. Patch-subject: Whitespace cleanup in pageattr.c Depends-on: add-pgtable-allocation-notifiers Signed-off-by: Zachary Amsden <zach@vmware.com> Index: linux-2.6.13/arch/i386/mm/pageattr.c

MMU code movement. Unfortunately, this one is a little bit more complicated than the rest. We have to override the default accessors that directly write to page table entries. Because of the 2/3-level PAE split in Linux, this turned out to be really ugly at first, but by allowing the sub-arch layer to override the definitions and keeping the native definitions in place, the code becomes much

MMU code movement. Unfortunately, this one is a little bit more complicated than the rest. We have to override the default accessors that directly write to page table entries. Because of the 2/3-level PAE split in Linux, this turned out to be really ugly at first, but by allowing the sub-arch layer to override the definitions and keeping the native definitions in place, the code becomes much

I''m sure everyone has seen the drop of VMI patches for Linux at this point, but just in case, the link is included below. I''ve read this version of the VMI spec and have made my way through most of the patches. While I wasn''t really that impressed with the first spec wrt Xen, the second version seems to be much more palatable. Specifically, the code inlining and

clear MPT l2 entries when allocating monitor pagetable Changeset 10734 removed the code clearing MPT l2 entries, however these entries are stained when copying from idle_pg_table_l2. Signed-off-by: Xin Li <xin.b.li@intel.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

Move header includes for the nopud / nopmd types to the location of the actual pte / pgd type definitions. This allows generic 4-level page type code to be written before the split 2/3 level page table headers are included. Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

Move header includes for the nopud / nopmd types to the location of the actual pte / pgd type definitions. This allows generic 4-level page type code to be written before the split 2/3 level page table headers are included. Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

From: Hung-chi Lihn <hlihn at google.com> In the current Lua.c32 DMI implementation, it is a flat table with dotted names in table entries. It also misses a number DMI sub-tables. This patch, cleans up the DMI table structure using Lua's nested table structure and adds all missing DMI sub-tables. If a DMI sub-table is not supported by the hardware (not filled), then the corresponding

From: Martin Schwidefsky <schwidefsky at de.ibm.com> The SIE instruction on s390 uses the 2nd half of the page table page to virtualize the storage keys of a guest. This patch offers the s390_enable_sie function, which reorganizes the page tables of a single-threaded process to reserve space in the page table: s390_enable_sie makes sure that the process is single threaded and then uses