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Message-ID: <20070721013334.GB3673@sequoia.sous-sol.org>
Date: Fri, 20 Jul 2007 18:33:34 -0700
From: Chris Wright <chrisw@...s-sol.org>
To: Rusty Russell <rusty@...tcorp.com.au>
Cc: lkml - Kernel Mailing List <linux-kernel@...r.kernel.org>,
Andi Kleen <ak@....de>,
kvm-devel <kvm-devel@...ts.sourceforge.net>,
Andrew Morton <akpm@...ux-foundation.org>,
Jeremy Fitzhardinge <jeremy@...p.org>,
Zachary Amsden <zach@...are.com>,
Chris Wright <chrisw@...s-sol.org>
Subject: Re: [PATCH 3/3] i386: Replace struct Xgt_desc_struct with struct
desc_ptr
* Rusty Russell (rusty@...tcorp.com.au) wrote:
> Remove i386's Xgt_desc_struct definition and use desc_def.h's desc_ptr.
plus this is needed now
Index: linus-2.6/drivers/lguest/lg.h
===================================================================
--- linus-2.6.orig/drivers/lguest/lg.h
+++ linus-2.6/drivers/lguest/lg.h
@@ -91,13 +91,13 @@ struct lguest_ro_state
{
/* Host information we need to restore when we switch back. */
u32 host_cr3;
- struct Xgt_desc_struct host_idt_desc;
- struct Xgt_desc_struct host_gdt_desc;
+ struct desc_ptr host_idt_desc;
+ struct desc_ptr host_gdt_desc;
u32 host_sp;
/* Fields which are used when guest is running. */
- struct Xgt_desc_struct guest_idt_desc;
- struct Xgt_desc_struct guest_gdt_desc;
+ struct desc_ptr guest_idt_desc;
+ struct desc_ptr guest_gdt_desc;
struct i386_hw_tss guest_tss;
struct desc_struct guest_idt[IDT_ENTRIES];
struct desc_struct guest_gdt[GDT_ENTRIES];
Index: linus-2.6/arch/i386/xen/enlighten.c
===================================================================
--- linus-2.6.orig/arch/i386/xen/enlighten.c
+++ linus-2.6/arch/i386/xen/enlighten.c
@@ -301,7 +301,7 @@ static void xen_set_ldt(const void *addr
xen_mc_issue(PARAVIRT_LAZY_CPU);
}
-static void xen_load_gdt(const struct Xgt_desc_struct *dtr)
+static void xen_load_gdt(const struct desc_ptr *dtr)
{
unsigned long *frames;
unsigned long va = dtr->address;
@@ -401,7 +401,7 @@ static int cvt_gate_to_trap(int vector,
}
/* Locations of each CPU's IDT */
-static DEFINE_PER_CPU(struct Xgt_desc_struct, idt_desc);
+static DEFINE_PER_CPU(struct desc_ptr, idt_desc);
/* Set an IDT entry. If the entry is part of the current IDT, then
also update Xen. */
@@ -433,7 +433,7 @@ static void xen_write_idt_entry(struct d
preempt_enable();
}
-static void xen_convert_trap_info(const struct Xgt_desc_struct *desc,
+static void xen_convert_trap_info(const struct desc_ptr *desc,
struct trap_info *traps)
{
unsigned in, out, count;
@@ -452,7 +452,7 @@ static void xen_convert_trap_info(const
void xen_copy_trap_info(struct trap_info *traps)
{
- const struct Xgt_desc_struct *desc = &__get_cpu_var(idt_desc);
+ const struct desc_ptr *desc = &__get_cpu_var(idt_desc);
xen_convert_trap_info(desc, traps);
}
@@ -460,7 +460,7 @@ void xen_copy_trap_info(struct trap_info
/* Load a new IDT into Xen. In principle this can be per-CPU, so we
hold a spinlock to protect the static traps[] array (static because
it avoids allocation, and saves stack space). */
-static void xen_load_idt(const struct Xgt_desc_struct *desc)
+static void xen_load_idt(const struct desc_ptr *desc)
{
static DEFINE_SPINLOCK(lock);
static struct trap_info traps[257];
Index: linus-2.6/drivers/lguest/lguest.c
===================================================================
--- linus-2.6.orig/drivers/lguest/lguest.c
+++ linus-2.6/drivers/lguest/lguest.c
@@ -167,7 +167,7 @@ static void lguest_write_idt_entry(struc
hcall(LHCALL_LOAD_IDT_ENTRY, entrynum, low, high);
}
-static void lguest_load_idt(const struct Xgt_desc_struct *desc)
+static void lguest_load_idt(const struct desc_ptr *desc)
{
unsigned int i;
struct desc_struct *idt = (void *)desc->address;
@@ -176,7 +176,7 @@ static void lguest_load_idt(const struct
hcall(LHCALL_LOAD_IDT_ENTRY, i, idt[i].raw32.a, idt[i].raw32.b);
}
-static void lguest_load_gdt(const struct Xgt_desc_struct *desc)
+static void lguest_load_gdt(const struct desc_ptr *desc)
{
BUG_ON((desc->size+1)/8 != GDT_ENTRIES);
hcall(LHCALL_LOAD_GDT, __pa(desc->address), GDT_ENTRIES, 0);
-
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