search for: init_new_context

By moving init_new_context and destroy_context inline into mmu_context.h, we can avoid extra functions calls, which are only needed for the unlikely case that the process context has an LDT to deal with. Now the code in ldt.c is called only when actually dealing with LDT creation or destruction. Careful analysis of alloc_l...

By moving init_new_context and destroy_context inline into mmu_context.h, we can avoid extra functions calls, which are only needed for the unlikely case that the process context has an LDT to deal with. Now the code in ldt.c is called only when actually dealing with LDT creation or destruction. Careful analysis of alloc_l...

...====================================== --- linux-2.6.14-zach-work.orig/include/asm-i386/mmu_context.h 2005-11-05 02:30:35.000000000 -0800 +++ linux-2.6.14-zach-work/include/asm-i386/mmu_context.h 2005-11-05 02:32:51.000000000 -0800 @@ -10,9 +10,28 @@ /* * Used for LDT copy/destruction. */ -int init_new_context(struct task_struct *tsk, struct mm_struct *mm); -void destroy_context(struct mm_struct *mm); +static inline int init_new_context(struct task_struct *tsk, struct mm_struct *mm) +{ + struct mm_struct * old_mm; + int retval = 0; + + memset(&mm->context, 0, sizeof(mm->context)); + init_MUTEX(...

...====================================== --- linux-2.6.14-zach-work.orig/include/asm-i386/mmu_context.h 2005-11-05 02:30:35.000000000 -0800 +++ linux-2.6.14-zach-work/include/asm-i386/mmu_context.h 2005-11-05 02:32:51.000000000 -0800 @@ -10,9 +10,28 @@ /* * Used for LDT copy/destruction. */ -int init_new_context(struct task_struct *tsk, struct mm_struct *mm); -void destroy_context(struct mm_struct *mm); +static inline int init_new_context(struct task_struct *tsk, struct mm_struct *mm) +{ + struct mm_struct * old_mm; + int retval = 0; + + memset(&mm->context, 0, sizeof(mm->context)); + init_MUTEX(...

...t = pc->ldt; + + if (pc == &current->active_mm->context) + clear_LDT(); + if (pages > 1) + vfree(ldt); + else + kfree(ldt); + pc->ldt_pages = 0; + pc->ldt = NULL; } -/* - * we do not have to muck with descriptors here, that is - * done in switch_mm() as needed. - */ int init_new_context(struct task_struct *tsk, struct mm_struct *mm) { struct mm_struct * old_mm; int retval = 0; + memset(&mm->context, 0, sizeof(mm->context)); init_MUTEX(&mm->context.sem); - mm->context.size = 0; old_mm = current->mm; - if (old_mm && old_mm->context.size &...

...t = pc->ldt; + + if (pc == &current->active_mm->context) + clear_LDT(); + if (pages > 1) + vfree(ldt); + else + kfree(ldt); + pc->ldt_pages = 0; + pc->ldt = NULL; } -/* - * we do not have to muck with descriptors here, that is - * done in switch_mm() as needed. - */ int init_new_context(struct task_struct *tsk, struct mm_struct *mm) { struct mm_struct * old_mm; int retval = 0; + memset(&mm->context, 0, sizeof(mm->context)); init_MUTEX(&mm->context.sem); - mm->context.size = 0; old_mm = current->mm; - if (old_mm && old_mm->context.size &...

...0e7400 c010c272 00000000 00000000 00003c00 cd3b91f4 cd0e7574 00000000 May 12 15:34:18 ioana.slack.i kernel: cd3b9080 1d244b3c 00000000 0000000a c031b4a4 00000000 00000000 00000000 May 12 15:34:18 ioana.slack.i kernel: Call Trace: May 12 15:34:18 ioana.slack.i kernel: [<c010c272>] init_new_context+0xfd/0x19f May 12 15:34:18 ioana.slack.i kernel: [<c011ef60>] copy_mm+0x101/0x14f May 12 15:34:18 ioana.slack.i kernel: [<c012017e>] copy_process+0x709/0xd4f May 12 15:34:18 ioana.slack.i kernel: [<c01879b4>] inode_update_time+0x80/0x87 May 12 15:34:18 ioana.slack.i kernel:...

...ng asce_limit; int noexec; + int pgstes; } mm_context_t; #endif Index: kvm/include/asm-s390/mmu_context.h =================================================================== --- kvm.orig/include/asm-s390/mmu_context.h +++ kvm/include/asm-s390/mmu_context.h @@ -20,7 +20,13 @@ static inline int init_new_context(struc #ifdef CONFIG_64BIT mm->context.asce_bits |= _ASCE_TYPE_REGION3; #endif - mm->context.noexec = s390_noexec; + if (current->mm->context.pgstes) { + mm->context.noexec = 0; + mm->context.pgstes = 1; + } else { + mm->context.noexec = s390_noexec; + mm->context.pgs...

Hi Andi, This series of patches updates paravirt_ops in various ways. Some of the changes are plain cleanups and improvements, and some add some interfaces necessary for Xen. The brief overview: add-MAINTAINERS.patch - obvious remove-CONFIG_DEBUG_PARAVIRT.patch - no longer needed paravirt-nop.patch - mark nop operations consistently paravirt-pte-accessors.patch - operations to pack/unpack

Hi Andi, This series of patches updates paravirt_ops in various ways. Some of the changes are plain cleanups and improvements, and some add some interfaces necessary for Xen. The brief overview: add-MAINTAINERS.patch - obvious remove-CONFIG_DEBUG_PARAVIRT.patch - no longer needed paravirt-nop.patch - mark nop operations consistently paravirt-pte-accessors.patch - operations to pack/unpack

Hi Andi, Here's a repost of the paravirt_ops update series I posted the other day. Since then, I found a few potential bugs with patching clobbering, cleaned up and documented paravirt.h and the patching machinery. Overview: add-MAINTAINERS.patch obvious remove-CONFIG_DEBUG_PARAVIRT.patch No longer meaningful or needed. paravirt-nop.patch Clean up nop paravirt_ops functions, mainly to

Hi Andi, Here's a repost of the paravirt_ops update series I posted the other day. Since then, I found a few potential bugs with patching clobbering, cleaned up and documented paravirt.h and the patching machinery. Overview: add-MAINTAINERS.patch obvious remove-CONFIG_DEBUG_PARAVIRT.patch No longer meaningful or needed. paravirt-nop.patch Clean up nop paravirt_ops functions, mainly to

This patch series introduces a backend for kvm to run on IBM System z machines that uses the mainframe's sie virtualization capability. This work runs 64bit guests on z800/z890/z900/z990/z9/z10 class machines with a 64bit linux host. Userspace will follow once we're done brushing it over. The patch queue consists of the following patches, which can be applied in sequence on top of kvm.git

This patch series introduces a backend for kvm to run on IBM System z machines that uses the mainframe's sie virtualization capability. This work runs 64bit guests on z800/z890/z900/z990/z9/z10 class machines with a 64bit linux host. Userspace will follow once we're done brushing it over. The patch queue consists of the following patches, which can be applied in sequence on top of kvm.git

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console