search for: switch16

...$4, %esp -1: iret +1: IRET .section .fixup,"ax" iret_exc: - sti + STI pushl $0 # no error code pushl $do_iret_error jmp error_code @@ -299,14 +298,14 @@ ldt_ss: * CPUs, which we can try to work around to make * dosemu and wine happy. */ subl $8, %esp # reserve space for switch16 pointer - cli + CLI movl %esp, %eax /* Set up the 16bit stack frame with switch32 pointer on top, * and a switch16 pointer on top of the current frame. */ call setup_x86_bogus_stack RESTORE_REGS lss 20+4(%esp), %esp # switch to 16bit stack -1: iret +1: IRET16 .section __ex_table,&quot...

...$4, %esp -1: iret +1: IRET .section .fixup,"ax" iret_exc: - sti + STI pushl $0 # no error code pushl $do_iret_error jmp error_code @@ -299,14 +298,14 @@ ldt_ss: * CPUs, which we can try to work around to make * dosemu and wine happy. */ subl $8, %esp # reserve space for switch16 pointer - cli + CLI movl %esp, %eax /* Set up the 16bit stack frame with switch32 pointer on top, * and a switch16 pointer on top of the current frame. */ call setup_x86_bogus_stack RESTORE_REGS lss 20+4(%esp), %esp # switch to 16bit stack -1: iret +1: IRET16 .section __ex_table,&quot...

...$0 # no error code pushl $do_iret_error jmp error_code -.previous +.popsection .section __ex_table,"a" .align 4 .long 1b,iret_exc @@ -281,14 +281,14 @@ ldt_ss: * CPUs, which we can try to work around to make * dosemu and wine happy. */ subl $8, %esp # reserve space for switch16 pointer - cli + CLI movl %esp, %eax /* Set up the 16bit stack frame with switch32 pointer on top, * and a switch16 pointer on top of the current frame. */ call setup_x86_bogus_stack RESTORE_REGS lss 20+4(%esp), %esp # switch to 16bit stack -1: iret +1: IRET .section __ex_table,"a...

...$0 # no error code pushl $do_iret_error jmp error_code -.previous +.popsection .section __ex_table,"a" .align 4 .long 1b,iret_exc @@ -281,14 +281,14 @@ ldt_ss: * CPUs, which we can try to work around to make * dosemu and wine happy. */ subl $8, %esp # reserve space for switch16 pointer - cli + CLI movl %esp, %eax /* Set up the 16bit stack frame with switch32 pointer on top, * and a switch16 pointer on top of the current frame. */ call setup_x86_bogus_stack RESTORE_REGS lss 20+4(%esp), %esp # switch to 16bit stack -1: iret +1: IRET .section __ex_table,"a...

...386/kernel/traps.c 2006-04-21 12:05:02.000000000 +1000 +++ tmp/arch/i386/kernel/traps.c 2006-05-02 15:57:41.000000000 +1000 @@ -1013,10 +1013,10 @@ fastcall void setup_x86_bogus_stack(unsi memcpy((void *)(stack_bot + iret_frame16_off), &regs->eip, 20); /* fill in the switch pointers */ switch16_ptr[0] = (regs->esp & 0xffff0000) | iret_frame16_off; - switch16_ptr[1] = __ESPFIX_SS; + switch16_ptr[1] = __ESPFIX_SS | get_kernel_rpl(); switch32_ptr[0] = (unsigned long)stk + sizeof(struct pt_regs) + 8 - CPU_16BIT_STACK_SIZE; - switch32_ptr[1] = __KERNEL_DS; + switch32_ptr[1] = __KER...

...386/kernel/traps.c 2006-04-21 12:05:02.000000000 +1000 +++ tmp/arch/i386/kernel/traps.c 2006-05-02 15:57:41.000000000 +1000 @@ -1013,10 +1013,10 @@ fastcall void setup_x86_bogus_stack(unsi memcpy((void *)(stack_bot + iret_frame16_off), &regs->eip, 20); /* fill in the switch pointers */ switch16_ptr[0] = (regs->esp & 0xffff0000) | iret_frame16_off; - switch16_ptr[1] = __ESPFIX_SS; + switch16_ptr[1] = __ESPFIX_SS | get_kernel_rpl(); switch32_ptr[0] = (unsigned long)stk + sizeof(struct pt_regs) + 8 - CPU_16BIT_STACK_SIZE; - switch32_ptr[1] = __KERNEL_DS; + switch32_ptr[1] = __KER...

Hi Andrew, This series of patches lays the basic ground work for the paravirtualized kernel patches coming later on. I think this lot is ready for the rough-and-tumble world of the -mm tree. The main change from the last posting is that all the page-table related patches have been moved out, and will be posted separately. Also, the off-by-one in reserving the top of address space has been

Hi Andrew, This series of patches lays the basic ground work for the paravirtualized kernel patches coming later on. I think this lot is ready for the rough-and-tumble world of the -mm tree. The main change from the last posting is that all the page-table related patches have been moved out, and will be posted separately. Also, the off-by-one in reserving the top of address space has been

[ REPOST: Apologies to anyone who has seen this before. It didn't make it onto any of the lists it should have. -J ] Hi Andrew, This series of patches lays the basic ground work for the paravirtualized kernel patches coming later on. I think this lot is ready for the rough-and-tumble world of the -mm tree. For the most part, these patches do nothing or very little. The patches should

[ REPOST: Apologies to anyone who has seen this before. It didn't make it onto any of the lists it should have. -J ] Hi Andrew, This series of patches lays the basic ground work for the paravirtualized kernel patches coming later on. I think this lot is ready for the rough-and-tumble world of the -mm tree. For the most part, these patches do nothing or very little. The patches should

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

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

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