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| author |   Thomas Gleixner <tglx@linutronix.de> | 2019-11-11 23:03:21 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-11-16 11:24:02 +0100 |
| commit | 577d5cd7e5851d3832066cd0422475fa7db2ee17 (patch) | |
| tree | 1de44238f0b2b0db2cb4778fc374f73cb8fe69f2 /arch/x86/include/asm/io_bitmap.h | |
| parent | x86/tss: Move I/O bitmap data into a seperate struct (diff) | |
| download | linux-dev-577d5cd7e5851d3832066cd0422475fa7db2ee17.tar.xz linux-dev-577d5cd7e5851d3832066cd0422475fa7db2ee17.zip | |
x86/ioperm: Move iobitmap data into a struct
No point in having all the data in thread_struct, especially as upcoming
changes add more.
Make the bitmap in the new struct accessible as array of longs and as array
of characters via a union, so both the bitmap functions and the update
logic can avoid type casts.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/include/asm/io_bitmap.h')
| -rw-r--r-- | arch/x86/include/asm/io_bitmap.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/include/asm/io_bitmap.h b/arch/x86/include/asm/io_bitmap.h new file mode 100644 index 000000000000..1a12b9ff5e4e --- /dev/null +++ b/arch/x86/include/asm/io_bitmap.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_X86_IOBITMAP_H +#define _ASM_X86_IOBITMAP_H + +#include <asm/processor.h> + +struct io_bitmap { + /* The maximum number of bytes to copy so all zero bits are covered */ + unsigned int max; + unsigned long bitmap[IO_BITMAP_LONGS]; +}; + +#endif |