Displaying 20 results from an estimated 44 matches for "io_bitmap_ptr".
2013 Oct 22
0
[PATCH 1/3] x86: process: Unify 32-bit and 64-bit copy_thread I/O bitmap handling
...-- /dev/null
+++ b/arch/x86/kernel/process-io.h
@@ -0,0 +1,22 @@
+#ifndef _X86_KERNEL_PROCESS_IO_H
+#define _X86_KERNEL_PROCESS_IO_H
+
+static inline int copy_io_bitmap(struct task_struct *me,
+ struct task_struct *p)
+{
+ if (unlikely(test_tsk_thread_flag(me, TIF_IO_BITMAP))) {
+ p->thread.io_bitmap_ptr = kmemdup(me->thread.io_bitmap_ptr,
+ IO_BITMAP_BYTES, GFP_KERNEL);
+ if (!p->thread.io_bitmap_ptr) {
+ p->thread.io_bitmap_max = 0;
+ return -ENOMEM;
+ }
+ set_tsk_thread_flag(p, TIF_IO_BITMAP);
+ } else {
+ p->thread.io_bitmap_ptr = NULL;
+ }
+
+ return 0;
+}
+
+#endif...
2014 Mar 11
2
[PATCHv2 1/3] x86: process: Unify 32-bit and 64-bit copy_thread I/O bitmap handling
...-- /dev/null
+++ b/arch/x86/kernel/process-io.h
@@ -0,0 +1,22 @@
+#ifndef _X86_KERNEL_PROCESS_IO_H
+#define _X86_KERNEL_PROCESS_IO_H
+
+static inline int copy_io_bitmap(struct task_struct *me,
+ struct task_struct *p)
+{
+ if (unlikely(test_tsk_thread_flag(me, TIF_IO_BITMAP))) {
+ p->thread.io_bitmap_ptr = kmemdup(me->thread.io_bitmap_ptr,
+ IO_BITMAP_BYTES, GFP_KERNEL);
+ if (!p->thread.io_bitmap_ptr) {
+ p->thread.io_bitmap_max = 0;
+ return -ENOMEM;
+ }
+ set_tsk_thread_flag(p, TIF_IO_BITMAP);
+ } else {
+ p->thread.io_bitmap_ptr = NULL;
+ }
+
+ return 0;
+}
+
+#endif...
2014 Mar 11
2
[PATCHv2 1/3] x86: process: Unify 32-bit and 64-bit copy_thread I/O bitmap handling
...-- /dev/null
+++ b/arch/x86/kernel/process-io.h
@@ -0,0 +1,22 @@
+#ifndef _X86_KERNEL_PROCESS_IO_H
+#define _X86_KERNEL_PROCESS_IO_H
+
+static inline int copy_io_bitmap(struct task_struct *me,
+ struct task_struct *p)
+{
+ if (unlikely(test_tsk_thread_flag(me, TIF_IO_BITMAP))) {
+ p->thread.io_bitmap_ptr = kmemdup(me->thread.io_bitmap_ptr,
+ IO_BITMAP_BYTES, GFP_KERNEL);
+ if (!p->thread.io_bitmap_ptr) {
+ p->thread.io_bitmap_max = 0;
+ return -ENOMEM;
+ }
+ set_tsk_thread_flag(p, TIF_IO_BITMAP);
+ } else {
+ p->thread.io_bitmap_ptr = NULL;
+ }
+
+ return 0;
+}
+
+#endif...
2014 Oct 29
4
[PATCH v3 1/3] x86: process: Unify 32-bit and 64-bit copy_thread I/O bitmap handling
...-- /dev/null
+++ b/arch/x86/kernel/process-io.h
@@ -0,0 +1,22 @@
+#ifndef _X86_KERNEL_PROCESS_IO_H
+#define _X86_KERNEL_PROCESS_IO_H
+
+static inline int copy_io_bitmap(struct task_struct *me,
+ struct task_struct *p)
+{
+ if (unlikely(test_tsk_thread_flag(me, TIF_IO_BITMAP))) {
+ p->thread.io_bitmap_ptr = kmemdup(me->thread.io_bitmap_ptr,
+ IO_BITMAP_BYTES, GFP_KERNEL);
+ if (!p->thread.io_bitmap_ptr) {
+ p->thread.io_bitmap_max = 0;
+ return -ENOMEM;
+ }
+ set_tsk_thread_flag(p, TIF_IO_BITMAP);
+ } else {
+ p->thread.io_bitmap_ptr = NULL;
+ }
+
+ return 0;
+}
+
+#endif...
2014 Oct 29
4
[PATCH v3 1/3] x86: process: Unify 32-bit and 64-bit copy_thread I/O bitmap handling
...-- /dev/null
+++ b/arch/x86/kernel/process-io.h
@@ -0,0 +1,22 @@
+#ifndef _X86_KERNEL_PROCESS_IO_H
+#define _X86_KERNEL_PROCESS_IO_H
+
+static inline int copy_io_bitmap(struct task_struct *me,
+ struct task_struct *p)
+{
+ if (unlikely(test_tsk_thread_flag(me, TIF_IO_BITMAP))) {
+ p->thread.io_bitmap_ptr = kmemdup(me->thread.io_bitmap_ptr,
+ IO_BITMAP_BYTES, GFP_KERNEL);
+ if (!p->thread.io_bitmap_ptr) {
+ p->thread.io_bitmap_max = 0;
+ return -ENOMEM;
+ }
+ set_tsk_thread_flag(p, TIF_IO_BITMAP);
+ } else {
+ p->thread.io_bitmap_ptr = NULL;
+ }
+
+ return 0;
+}
+
+#endif...
2013 Oct 22
9
[PATCH 0/3] x86: Support compiling out userspace I/O (iopl and ioperm)
This patch series makes it possible to compile out the iopl and ioperm system
calls, which allow privileged processes to request permission to directly poke
I/O ports from userspace.
Nothing on a modern Linux system uses these calls anymore, and anything new
should be using /dev/port instead, or better yet writing a driver.
Copying the bloat-o-meter stats from the final patch:
32-bit
2013 Oct 22
9
[PATCH 0/3] x86: Support compiling out userspace I/O (iopl and ioperm)
This patch series makes it possible to compile out the iopl and ioperm system
calls, which allow privileged processes to request permission to directly poke
I/O ports from userspace.
Nothing on a modern Linux system uses these calls anymore, and anything new
should be using /dev/port instead, or better yet writing a driver.
Copying the bloat-o-meter stats from the final patch:
32-bit
2014 Nov 02
12
[PATCH v4 00/10] x86: Support compiling out userspace IO (iopl and ioperm)
This patch series makes it possible to compile out the userspace IO system
calls, iopl and ioperm.
The first patch does some 32/64 unification in copy_thread to make subsequent
changes easier. The second patch simplifies the complex calculation of the TSS
segment limit, which also makes it easier to change in the last patch. Patches
3-9 introduce helpers to make it easier to compile out IO.
2014 Nov 02
12
[PATCH v4 00/10] x86: Support compiling out userspace IO (iopl and ioperm)
This patch series makes it possible to compile out the userspace IO system
calls, iopl and ioperm.
The first patch does some 32/64 unification in copy_thread to make subsequent
changes easier. The second patch simplifies the complex calculation of the TSS
segment limit, which also makes it easier to change in the last patch. Patches
3-9 introduce helpers to make it easier to compile out IO.
2014 Mar 11
0
[PATCHv2 3/3] x86: Support compiling out userspace I/O (iopl and ioperm)
...INVALID_IO_BITMAP_OFFSET;
+#endif
+}
+
/*
* Save the original ist values for checking stack pointers during debugging
*/
@@ -502,11 +526,13 @@ struct thread_struct {
unsigned int saved_fs;
unsigned int saved_gs;
#endif
+#ifdef CONFIG_X86_IOPORT
/* IO permissions: */
unsigned long *io_bitmap_ptr;
unsigned long iopl;
/* Max allowed port in the bitmap, in bytes: */
unsigned io_bitmap_max;
+#endif /* CONFIG_X86_IOPORT */
/*
* fpu_counter contains the number of consecutive context switches
* that the FPU is used. If this is over a threshold, the lazy fpu
@@ -518,6 +544,7 @@ str...
2014 Oct 29
0
[PATCH v3 3/3] x86: Support compiling out userspace I/O (iopl and ioperm)
...ck pointers during debugging
> */
> @@ -510,11 +534,13 @@ struct thread_struct {
> unsigned int saved_fs;
> unsigned int saved_gs;
> #endif
> +#ifdef CONFIG_X86_IOPORT
> /* IO permissions: */
> unsigned long *io_bitmap_ptr;
> unsigned long iopl;
> /* Max allowed port in the bitmap, in bytes: */
> unsigned io_bitmap_max;
> +#endif /* CONFIG_X86_IOPORT */
> /*
> * fpu_counter contains the number of consecutive context switches
>...
2014 Oct 29
2
[PATCH v3 3/3] x86: Support compiling out userspace I/O (iopl and ioperm)
...INVALID_IO_BITMAP_OFFSET;
+#endif
+}
+
/*
* Save the original ist values for checking stack pointers during debugging
*/
@@ -510,11 +534,13 @@ struct thread_struct {
unsigned int saved_fs;
unsigned int saved_gs;
#endif
+#ifdef CONFIG_X86_IOPORT
/* IO permissions: */
unsigned long *io_bitmap_ptr;
unsigned long iopl;
/* Max allowed port in the bitmap, in bytes: */
unsigned io_bitmap_max;
+#endif /* CONFIG_X86_IOPORT */
/*
* fpu_counter contains the number of consecutive context switches
* that the FPU is used. If this is over a threshold, the lazy fpu
@@ -531,7 +557,7 @@ str...
2014 Oct 29
2
[PATCH v3 3/3] x86: Support compiling out userspace I/O (iopl and ioperm)
...INVALID_IO_BITMAP_OFFSET;
+#endif
+}
+
/*
* Save the original ist values for checking stack pointers during debugging
*/
@@ -510,11 +534,13 @@ struct thread_struct {
unsigned int saved_fs;
unsigned int saved_gs;
#endif
+#ifdef CONFIG_X86_IOPORT
/* IO permissions: */
unsigned long *io_bitmap_ptr;
unsigned long iopl;
/* Max allowed port in the bitmap, in bytes: */
unsigned io_bitmap_max;
+#endif /* CONFIG_X86_IOPORT */
/*
* fpu_counter contains the number of consecutive context switches
* that the FPU is used. If this is over a threshold, the lazy fpu
@@ -531,7 +557,7 @@ str...
2013 Oct 31
1
[PATCH 1/3] x86: process: Unify 32-bit and 64-bit copy_thread I/O bitmap handling
....h
> @@ -0,0 +1,22 @@
> +#ifndef _X86_KERNEL_PROCESS_IO_H
> +#define _X86_KERNEL_PROCESS_IO_H
> +
> +static inline int copy_io_bitmap(struct task_struct *me,
> + struct task_struct *p)
> +{
> + if (unlikely(test_tsk_thread_flag(me, TIF_IO_BITMAP))) {
> + p->thread.io_bitmap_ptr = kmemdup(me->thread.io_bitmap_ptr,
> + IO_BITMAP_BYTES, GFP_KERNEL);
> + if (!p->thread.io_bitmap_ptr) {
> + p->thread.io_bitmap_max = 0;
> + return -ENOMEM;
> + }
> + set_tsk_thread_flag(p, TIF_IO_BITMAP);
> + } else {
> + p->thread.io_bitmap_ptr...
2013 Oct 31
1
[PATCH 1/3] x86: process: Unify 32-bit and 64-bit copy_thread I/O bitmap handling
....h
> @@ -0,0 +1,22 @@
> +#ifndef _X86_KERNEL_PROCESS_IO_H
> +#define _X86_KERNEL_PROCESS_IO_H
> +
> +static inline int copy_io_bitmap(struct task_struct *me,
> + struct task_struct *p)
> +{
> + if (unlikely(test_tsk_thread_flag(me, TIF_IO_BITMAP))) {
> + p->thread.io_bitmap_ptr = kmemdup(me->thread.io_bitmap_ptr,
> + IO_BITMAP_BYTES, GFP_KERNEL);
> + if (!p->thread.io_bitmap_ptr) {
> + p->thread.io_bitmap_max = 0;
> + return -ENOMEM;
> + }
> + set_tsk_thread_flag(p, TIF_IO_BITMAP);
> + } else {
> + p->thread.io_bitmap_ptr...
2013 Oct 31
1
[PATCH 3/3] x86: Support compiling out userspace I/O (iopl and ioperm)
...gt; * Save the original ist values for checking stack pointers during debugging
> */
> @@ -484,13 +508,16 @@ struct thread_struct {
> unsigned int saved_fs;
> unsigned int saved_gs;
> #endif
> +#ifdef CONFIG_X86_IOPORT
> /* IO permissions: */
> unsigned long *io_bitmap_ptr;
> unsigned long iopl;
> /* Max allowed port in the bitmap, in bytes: */
> unsigned io_bitmap_max;
> +#endif /* CONFIG_X86_IOPORT */
> };
>
> +#ifdef CONFIG_X86_IOPORT
> /*
> * Set IOPL bits in EFLAGS from given mask
> */
> @@ -509,6 +536,7 @@ static...
2013 Oct 31
1
[PATCH 3/3] x86: Support compiling out userspace I/O (iopl and ioperm)
...gt; * Save the original ist values for checking stack pointers during debugging
> */
> @@ -484,13 +508,16 @@ struct thread_struct {
> unsigned int saved_fs;
> unsigned int saved_gs;
> #endif
> +#ifdef CONFIG_X86_IOPORT
> /* IO permissions: */
> unsigned long *io_bitmap_ptr;
> unsigned long iopl;
> /* Max allowed port in the bitmap, in bytes: */
> unsigned io_bitmap_max;
> +#endif /* CONFIG_X86_IOPORT */
> };
>
> +#ifdef CONFIG_X86_IOPORT
> /*
> * Set IOPL bits in EFLAGS from given mask
> */
> @@ -509,6 +536,7 @@ static...
2013 Oct 22
0
[PATCH 3/3] x86: Support compiling out userspace I/O (iopl and ioperm)
...INVALID_IO_BITMAP_OFFSET;
+#endif
+}
+
/*
* Save the original ist values for checking stack pointers during debugging
*/
@@ -484,13 +508,16 @@ struct thread_struct {
unsigned int saved_fs;
unsigned int saved_gs;
#endif
+#ifdef CONFIG_X86_IOPORT
/* IO permissions: */
unsigned long *io_bitmap_ptr;
unsigned long iopl;
/* Max allowed port in the bitmap, in bytes: */
unsigned io_bitmap_max;
+#endif /* CONFIG_X86_IOPORT */
};
+#ifdef CONFIG_X86_IOPORT
/*
* Set IOPL bits in EFLAGS from given mask
*/
@@ -509,6 +536,7 @@ static inline void native_set_iopl_mask(unsigned mask)...
2013 Oct 26
1
[PATCH 3/3] x86: Support compiling out userspace I/O (iopl and ioperm)
...ck pointers during debugging
> */
> @@ -484,13 +508,16 @@ struct thread_struct {
> unsigned int saved_fs;
> unsigned int saved_gs;
> #endif
> +#ifdef CONFIG_X86_IOPORT
> /* IO permissions: */
> unsigned long *io_bitmap_ptr;
> unsigned long iopl;
> /* Max allowed port in the bitmap, in bytes: */
> unsigned io_bitmap_max;
> +#endif /* CONFIG_X86_IOPORT */
> };
>
> +#ifdef CONFIG_X86_IOPORT
> /*
> * Set IOPL bits in EFLAGS from given mask
&g...
2013 Oct 26
1
[PATCH 3/3] x86: Support compiling out userspace I/O (iopl and ioperm)
...ck pointers during debugging
> */
> @@ -484,13 +508,16 @@ struct thread_struct {
> unsigned int saved_fs;
> unsigned int saved_gs;
> #endif
> +#ifdef CONFIG_X86_IOPORT
> /* IO permissions: */
> unsigned long *io_bitmap_ptr;
> unsigned long iopl;
> /* Max allowed port in the bitmap, in bytes: */
> unsigned io_bitmap_max;
> +#endif /* CONFIG_X86_IOPORT */
> };
>
> +#ifdef CONFIG_X86_IOPORT
> /*
> * Set IOPL bits in EFLAGS from given mask
&g...