search for: ret_from_except

...n .fixup,"ax"; \ 28: movl $__KERNEL_DS, %eax; \ movl %eax, %ds; \ movl %eax, %es; \ /* switch to 32bit stack */ \ FIXUP_ESPFIX_STACK; \ jmp 27b; \ -.previous +.popsection = /* * Build the entry stubs and pointer table with @@ -639,7 +639,7 @@ error_code: call *%edi jmp ret_from_exception CFI_ENDPROC -.previous +KPROBE_EXIT = ENTRY(coprocessor_error) RING0_INT_FRAME @@ -715,7 +715,7 @@ debug_stack_correct: call do_debug jmp ret_from_exception CFI_ENDPROC -.previous +KPROBE_EXIT = /* * NMI is doubly nasty. It can happen _while_ we're handling @@ -795,12 +795,...

...n .fixup,"ax"; \ 28: movl $__KERNEL_DS, %eax; \ movl %eax, %ds; \ movl %eax, %es; \ /* switch to 32bit stack */ \ FIXUP_ESPFIX_STACK; \ jmp 27b; \ -.previous +.popsection = /* * Build the entry stubs and pointer table with @@ -639,7 +639,7 @@ error_code: call *%edi jmp ret_from_exception CFI_ENDPROC -.previous +KPROBE_EXIT = ENTRY(coprocessor_error) RING0_INT_FRAME @@ -715,7 +715,7 @@ debug_stack_correct: call do_debug jmp ret_from_exception CFI_ENDPROC -.previous +KPROBE_EXIT = /* * NMI is doubly nasty. It can happen _while_ we're handling @@ -795,12 +795,...

...eax popl_cfi %eax lea 16(%esp),%esp CFI_ADJUST_CFA_OFFSET -16 jz 5f addl $16,%esp - jmp iret_exc # EAX != 0 => Category 2 (Bad IRET) -5: pushl_cfi $0 # EAX == 0 => Category 1 (Bad segment) + jmp iret_exc +5: pushl_cfi $-1 /* orig_ax = -1 => not a system call */ SAVE_ALL jmp ret_from_exception CFI_ENDPROC diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index cdc790c..430b1fc 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -1451,7 +1451,7 @@ ENTRY(xen_failsafe_callback) CFI_RESTORE r11 addq $0x30,%rsp CFI_ADJUST_CFA_OFFSET -0x30...

...linux-2.6.16-rc5/arch/i386/kernel/entry.S =================================================================== --- linux-2.6.16-rc5.orig/arch/i386/kernel/entry.S 2006-03-08 17:10:25.000000000 -0800 +++ linux-2.6.16-rc5/arch/i386/kernel/entry.S 2006-03-08 17:10:26.000000000 -0800 @@ -145,9 +145,11 @@ ret_from_exception: ret_from_intr: GET_THREAD_INFO(%ebp) movl EFLAGS(%esp), %eax # mix EFLAGS and CS + andl $VM_MASK, %eax movb CS(%esp), %al - testl $(VM_MASK | 3), %eax - jz resume_kernel + andb $SEGMENT_RPL_MASK, %al + cmpl $SEGMENT_RPL_MASK, %eax + jb resume_kernel # returning to kernel or vm86-space...

...linux-2.6.16-rc5/arch/i386/kernel/entry.S =================================================================== --- linux-2.6.16-rc5.orig/arch/i386/kernel/entry.S 2006-03-08 17:10:25.000000000 -0800 +++ linux-2.6.16-rc5/arch/i386/kernel/entry.S 2006-03-08 17:10:26.000000000 -0800 @@ -145,9 +145,11 @@ ret_from_exception: ret_from_intr: GET_THREAD_INFO(%ebp) movl EFLAGS(%esp), %eax # mix EFLAGS and CS + andl $VM_MASK, %eax movb CS(%esp), %al - testl $(VM_MASK | 3), %eax - jz resume_kernel + andb $SEGMENT_RPL_MASK, %al + cmpl $SEGMENT_RPL_MASK, %eax + jb resume_kernel # returning to kernel or vm86-space...

OK, this is the revised paravirt.h (Andi has seen this before), then the second is the binary patching stuff. More things get added to the paravirt struct in future patches, but this basic stuff hasn't changed for some time. ==== This patch does the dumbest possible replacement of paravirtualized instructions: calls through a "paravirt_ops" structure. Currently these are function

The following patches introduce the core infrastructure needed to paravirtualize the 32-bit x86 Linux kernel. This is done by moving virtualization sensitive insn's or code paths to a function table, paravirt_ops. This structure can be populated with hypervisor specific calls or native stubs and currently support running on bare metal, VMI, Xen, or Lhype. These patches apply to

The following patches introduce the core infrastructure needed to paravirtualize the 32-bit x86 Linux kernel. This is done by moving virtualization sensitive insn's or code paths to a function table, paravirt_ops. This structure can be populated with hypervisor specific calls or native stubs and currently support running on bare metal, VMI, Xen, or Lhype. These patches apply to

...rnel/kernel-patches/current-dontdiff --minimal linux-2.6.17-rc2-git7/arch/i386/kernel/entry.S tmp/arch/i386/kernel/entry.S --- linux-2.6.17-rc2-git7/arch/i386/kernel/entry.S 2006-04-21 12:05:02.000000000 +1000 +++ tmp/arch/i386/kernel/entry.S 2006-05-02 16:00:17.000000000 +1000 @@ -144,9 +144,11 @@ ret_from_exception: ret_from_intr: GET_THREAD_INFO(%ebp) movl EFLAGS(%esp), %eax # mix EFLAGS and CS + andl $VM_MASK, %eax movb CS(%esp), %al - testl $(VM_MASK | 3), %eax - jz resume_kernel + andb $SEGMENT_RPL_MASK, %al + cmpl $SEGMENT_RPL_MASK, %eax + jb resume_kernel # returning to kernel or vm86-space...

...rnel/kernel-patches/current-dontdiff --minimal linux-2.6.17-rc2-git7/arch/i386/kernel/entry.S tmp/arch/i386/kernel/entry.S --- linux-2.6.17-rc2-git7/arch/i386/kernel/entry.S 2006-04-21 12:05:02.000000000 +1000 +++ tmp/arch/i386/kernel/entry.S 2006-05-02 16:00:17.000000000 +1000 @@ -144,9 +144,11 @@ ret_from_exception: ret_from_intr: GET_THREAD_INFO(%ebp) movl EFLAGS(%esp), %eax # mix EFLAGS and CS + andl $VM_MASK, %eax movb CS(%esp), %al - testl $(VM_MASK | 3), %eax - jz resume_kernel + andb $SEGMENT_RPL_MASK, %al + cmpl $SEGMENT_RPL_MASK, %eax + jb resume_kernel # returning to kernel or vm86-space...

Unlike full virtualization in which the virtual machine provides the same platform interface as running natively on the hardware, paravirtualization requires modification to the guest operating system to work with the platform interface provided by the hypervisor. Xen was designed with performance in mind. Calls to the hypervisor are minimized, batched if necessary, and non-critical codepaths

This patch series contains a set of patches making minios rather easier to use, from an application development point of view. Overview of patches: 1 Command line argument parsing support, from Xen. 2 Weak console handler function. 3 Build system tweaks for application directories. 4 Trailing whitespace cleanup. (because it is very messy) Patch 4 is likely to be more controversial than

Unlike full virtualization in which the virtual machine provides the same platform interface as running natively on the hardware, paravirtualization requires modification to the guest operating system to work with the platform interface provided by the hypervisor. Xen was designed with performance in mind. Calls to the hypervisor are minimized, batched if necessary, and non-critical codepaths

Unlike full virtualization in which the virtual machine provides the same platform interface as running natively on the hardware, paravirtualization requires modification to the guest operating system to work with the platform interface provided by the hypervisor. Xen was designed with performance in mind. Calls to the hypervisor are minimized, batched if necessary, and non-critical codepaths

This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual block

This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual block

This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual block

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 only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *

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 only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *

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 only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *