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Date: Fri, 24 Oct 2008 20:15:23 -0700
From: Joe Damato <ice799@...il.com>
To: linux-x86_64@...r.kernel.org, linux-newbie@...r.kernel.org,
kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Joe Damato <ice799@...il.com>
Subject: [PATCH 03/12] x86: Cleanup usage of struct desc_struct
Use gate_desc typedef for IDT entries instead of struct desc_struct.
Signed-off-by: Joe Damato <ice799@...il.com>
---
arch/x86/kernel/vmi_32.c | 2 +-
drivers/lguest/interrupts_and_traps.c | 12 ++++++------
drivers/lguest/lg.h | 2 +-
include/asm-x86/lguest.h | 4 ++--
4 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/arch/x86/kernel/vmi_32.c b/arch/x86/kernel/vmi_32.c
index 8b6c393..8c87b9b 100644
--- a/arch/x86/kernel/vmi_32.c
+++ b/arch/x86/kernel/vmi_32.c
@@ -63,7 +63,7 @@ static struct {
void (*cpuid)(void /* non-c */);
void (*_set_ldt)(u32 selector);
void (*set_tr)(u32 selector);
- void (*write_idt_entry)(struct desc_struct *, int, u32, u32);
+ void (*write_idt_entry)(gate_desc *, int, u32, u32);
void (*write_gdt_entry)(struct desc_struct *, int, u32, u32);
void (*write_ldt_entry)(struct desc_struct *, int, u32, u32);
void (*set_kernel_stack)(u32 selector, u32 sp0);
diff --git a/drivers/lguest/interrupts_and_traps.c b/drivers/lguest/interrupts_and_traps.c
index a103906..48aa15b 100644
--- a/drivers/lguest/interrupts_and_traps.c
+++ b/drivers/lguest/interrupts_and_traps.c
@@ -133,7 +133,7 @@ void maybe_do_interrupt(struct lg_cpu *cpu)
{
unsigned int irq;
DECLARE_BITMAP(blk, LGUEST_IRQS);
- struct desc_struct *idt;
+ gate_desc *idt;
/* If the Guest hasn't even initialized yet, we can do nothing. */
if (!cpu->lg->lguest_data)
@@ -353,7 +353,7 @@ void guest_set_stack(struct lg_cpu *cpu, u32 seg, u32 esp, unsigned int pages)
/*H:235 This is the routine which actually checks the Guest's IDT entry and
* transfers it into the entry in "struct lguest": */
-static void set_trap(struct lg_cpu *cpu, struct desc_struct *trap,
+static void set_trap(struct lg_cpu *cpu, gate_desc *trap,
unsigned int num, u32 lo, u32 hi)
{
u8 type = idt_type(lo, hi);
@@ -404,10 +404,10 @@ void load_guest_idt_entry(struct lg_cpu *cpu, unsigned int num, u32 lo, u32 hi)
/* The default entry for each interrupt points into the Switcher routines which
* simply return to the Host. The run_guest() loop will then call
* deliver_trap() to bounce it back into the Guest. */
-static void default_idt_entry(struct desc_struct *idt,
+static void default_idt_entry(gate_desc *idt,
int trap,
const unsigned long handler,
- const struct desc_struct *base)
+ const gate_desc *base)
{
/* A present interrupt gate. */
u32 flags = 0x8e00;
@@ -439,7 +439,7 @@ void setup_default_idt_entries(struct lguest_ro_state *state,
/*H:240 We don't use the IDT entries in the "struct lguest" directly, instead
* we copy them into the IDT which we've set up for Guests on this CPU, just
* before we run the Guest. This routine does that copy. */
-void copy_traps(const struct lg_cpu *cpu, struct desc_struct *idt,
+void copy_traps(const struct lg_cpu *cpu, gate_desc *idt,
const unsigned long *def)
{
unsigned int i;
@@ -447,7 +447,7 @@ void copy_traps(const struct lg_cpu *cpu, struct desc_struct *idt,
/* We can simply copy the direct traps, otherwise we use the default
* ones in the Switcher: they will return to the Host. */
for (i = 0; i < ARRAY_SIZE(cpu->arch.idt); i++) {
- const struct desc_struct *gidt = &cpu->arch.idt[i];
+ const gate_desc *gidt = &cpu->arch.idt[i];
/* If no Guest can ever override this trap, leave it alone. */
if (!direct_trap(i))
diff --git a/drivers/lguest/lg.h b/drivers/lguest/lg.h
index 5faefea..4377488 100644
--- a/drivers/lguest/lg.h
+++ b/drivers/lguest/lg.h
@@ -147,7 +147,7 @@ void guest_set_stack(struct lg_cpu *cpu, u32 seg, u32 esp, unsigned int pages);
void pin_stack_pages(struct lg_cpu *cpu);
void setup_default_idt_entries(struct lguest_ro_state *state,
const unsigned long *def);
-void copy_traps(const struct lg_cpu *cpu, struct desc_struct *idt,
+void copy_traps(const struct lg_cpu *cpu, gate_desc *idt,
const unsigned long *def);
void guest_set_clockevent(struct lg_cpu *cpu, unsigned long delta);
void init_clockdev(struct lg_cpu *cpu);
diff --git a/include/asm-x86/lguest.h b/include/asm-x86/lguest.h
index 7505e94..9ccf6f4 100644
--- a/include/asm-x86/lguest.h
+++ b/include/asm-x86/lguest.h
@@ -61,7 +61,7 @@ struct lguest_ro_state {
struct desc_ptr guest_idt_desc;
struct desc_ptr guest_gdt_desc;
struct x86_hw_tss guest_tss;
- struct desc_struct guest_idt[IDT_ENTRIES];
+ gate_desc guest_idt[IDT_ENTRIES];
struct desc_struct guest_gdt[GDT_ENTRIES];
};
@@ -70,7 +70,7 @@ struct lg_cpu_arch {
struct desc_struct gdt[GDT_ENTRIES];
/* The IDT entries: some copied into lguest_ro_state when running. */
- struct desc_struct idt[IDT_ENTRIES];
+ gate_desc idt[IDT_ENTRIES];
/* The address of the last guest-visible pagefault (ie. cr2). */
unsigned long last_pagefault;
--
1.5.4.3
--
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