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x86/tss: Move I/O bitmap data into a seperate struct

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Move the non hardware portion of I/O bitmap data into a seperate struct for
readability sake.

Originally-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner
2019-11-12 18:45:29 +01:00
parent ecc7e37d4d
commit f5848e5fd2
4 changed files with 34 additions and 27 deletions
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4
arch/x86/kernel/ioport.c
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@@ -81,9 +81,9 @@ long ksys_ioperm(unsigned long from, unsigned long num, int turn_on)
/* Update the TSS */
tss = this_cpu_ptr(&cpu_tss_rw);
memcpy(tss->io_bitmap, t->io_bitmap_ptr, bytes_updated);
memcpy(tss->io_bitmap.bitmap, t->io_bitmap_ptr, bytes_updated);
/* Store the new end of the zero bits */
tss->io_bitmap_prev_max = bytes;
tss->io_bitmap.prev_max = bytes;
/* Make the bitmap base in the TSS valid */
tss->x86_tss.io_bitmap_base = IO_BITMAP_OFFSET_VALID;
/* Make sure the TSS limit covers the I/O bitmap. */