This patch moves the definition of segment_descriptor_64 for AMD64 and EM64T from kvm_main.c to segment_descriptor.h. It also adds a proper #ifndef...#define...#endif around that header file. The implementation of segment_base is moved from kvm_main.c to x86.c.
Signed-off-by: Carsten Otte <[EMAIL PROTECTED]> Reviewed-by: Christian Borntraeger <[EMAIL PROTECTED]> --- kvm_main.c | 42 ------------------------------------------ segment_descriptor.h | 12 ++++++++++++ x86.c | 33 +++++++++++++++++++++++++++++++++ 3 files changed, 45 insertions(+), 42 deletions(-) Index: kvm/drivers/kvm/kvm_main.c =================================================================== --- kvm.orig/drivers/kvm/kvm_main.c 2007-10-29 12:48:55.000000000 +0100 +++ kvm/drivers/kvm/kvm_main.c 2007-10-29 13:05:00.000000000 +0100 @@ -18,7 +18,6 @@ #include "kvm.h" #include "x86.h" #include "x86_emulate.h" -#include "segment_descriptor.h" #include "irq.h" #include <linux/kvm.h> @@ -104,50 +103,9 @@ #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR) #define EFER_RESERVED_BITS 0xfffffffffffff2fe -#ifdef CONFIG_X86_64 -/* LDT or TSS descriptor in the GDT. 16 bytes. */ -struct segment_descriptor_64 { - struct segment_descriptor s; - u32 base_higher; - u32 pad_zero; -}; - -#endif - static long kvm_vcpu_ioctl(struct file *file, unsigned int ioctl, unsigned long arg); -unsigned long segment_base(u16 selector) -{ - struct descriptor_table gdt; - struct segment_descriptor *d; - unsigned long table_base; - unsigned long v; - - if (selector == 0) - return 0; - - asm("sgdt %0" : "=m"(gdt)); - table_base = gdt.base; - - if (selector & 4) { /* from ldt */ - u16 ldt_selector; - - asm("sldt %0" : "=g"(ldt_selector)); - table_base = segment_base(ldt_selector); - } - d = (struct segment_descriptor *)(table_base + (selector & ~7)); - v = d->base_low | ((unsigned long)d->base_mid << 16) | - ((unsigned long)d->base_high << 24); -#ifdef CONFIG_X86_64 - if (d->system == 0 && (d->type == 2 || d->type == 9 || d->type == 11)) - v |= ((unsigned long) \ - ((struct segment_descriptor_64 *)d)->base_higher) << 32; -#endif - return v; -} -EXPORT_SYMBOL_GPL(segment_base); - static inline int valid_vcpu(int n) { return likely(n >= 0 && n < KVM_MAX_VCPUS); Index: kvm/drivers/kvm/segment_descriptor.h =================================================================== --- kvm.orig/drivers/kvm/segment_descriptor.h 2007-10-29 12:48:55.000000000 +0100 +++ kvm/drivers/kvm/segment_descriptor.h 2007-10-29 13:04:38.000000000 +0100 @@ -1,3 +1,6 @@ +#ifndef __SEGMENT_DESCRIPTOR_H +#define __SEGMENT_DESCRIPTOR_H + struct segment_descriptor { u16 limit_low; u16 base_low; @@ -14,4 +17,13 @@ u8 base_high; } __attribute__((packed)); +#ifdef CONFIG_X86_64 +/* LDT or TSS descriptor in the GDT. 16 bytes. */ +struct segment_descriptor_64 { + struct segment_descriptor s; + u32 base_higher; + u32 pad_zero; +}; +#endif +#endif Index: kvm/drivers/kvm/x86.c =================================================================== --- kvm.orig/drivers/kvm/x86.c 2007-10-29 12:48:55.000000000 +0100 +++ kvm/drivers/kvm/x86.c 2007-10-29 13:06:01.000000000 +0100 @@ -16,16 +16,49 @@ #include "kvm.h" #include "x86.h" +#include "segment_descriptor.h" #include "irq.h" #include <linux/kvm.h> #include <linux/fs.h> #include <linux/vmalloc.h> +#include <linux/module.h> #include <asm/uaccess.h> #define MAX_IO_MSRS 256 +unsigned long segment_base(u16 selector) +{ + struct descriptor_table gdt; + struct segment_descriptor *d; + unsigned long table_base; + unsigned long v; + + if (selector == 0) + return 0; + + asm("sgdt %0" : "=m"(gdt)); + table_base = gdt.base; + + if (selector & 4) { /* from ldt */ + u16 ldt_selector; + + asm("sldt %0" : "=g"(ldt_selector)); + table_base = segment_base(ldt_selector); + } + d = (struct segment_descriptor *)(table_base + (selector & ~7)); + v = d->base_low | ((unsigned long)d->base_mid << 16) | + ((unsigned long)d->base_high << 24); +#ifdef CONFIG_X86_64 + if (d->system == 0 && (d->type == 2 || d->type == 9 || d->type == 11)) + v |= ((unsigned long) \ + ((struct segment_descriptor_64 *)d)->base_higher) << 32; +#endif + return v; +} +EXPORT_SYMBOL_GPL(segment_base); + /* * List of msr numbers which we expose to userspace through KVM_GET_MSRS * and KVM_SET_MSRS, and KVM_GET_MSR_INDEX_LIST. ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel