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| author | Thomas Gleixner <tglx@linutronix.de> | 2019-11-12 18:45:29 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-11-16 11:24:01 +0100 |
| commit | f5848e5fd2f813c3a8009a642dfbcf635287c199 (patch) | |
| tree | 743b5d450d4c18c2a633e41803bdcce08d265649 /arch/x86/kernel | |
| parent | x86/io: Speedup schedule out of I/O bitmap user (diff) | |
| download | linux-f5848e5fd2f813c3a8009a642dfbcf635287c199.tar.xz linux-f5848e5fd2f813c3a8009a642dfbcf635287c199.zip | |
x86/tss: Move I/O bitmap data into a seperate struct
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>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/ioport.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/process.c | 6 |
3 files changed, 7 insertions, 7 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 8c1000a57b55..3aee167246f7 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1861,8 +1861,8 @@ void cpu_init(void) /* Initialize the TSS. */ tss_setup_ist(tss); tss->x86_tss.io_bitmap_base = IO_BITMAP_OFFSET_INVALID; - tss->io_bitmap_prev_max = 0; - memset(tss->io_bitmap, 0xff, sizeof(tss->io_bitmap)); + tss->io_bitmap.prev_max = 0; + memset(tss->io_bitmap.bitmap, 0xff, sizeof(tss->io_bitmap.bitmap)); set_tss_desc(cpu, &get_cpu_entry_area(cpu)->tss.x86_tss); load_TR_desc(); diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c index eed218a3fd48..80d99bb826f3 100644 --- a/arch/x86/kernel/ioport.c +++ b/arch/x86/kernel/ioport.c @@ -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. */ diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 2444fe296de5..35f1c80df7a8 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -374,11 +374,11 @@ static inline void switch_to_bitmap(struct thread_struct *next, * bits permitted, then the copy needs to cover those as * well so they get turned off. */ - memcpy(tss->io_bitmap, next->io_bitmap_ptr, - max(tss->io_bitmap_prev_max, next->io_bitmap_max)); + memcpy(tss->io_bitmap.bitmap, next->io_bitmap_ptr, + max(tss->io_bitmap.prev_max, next->io_bitmap_max)); /* Store the new max and set io_bitmap_base valid */ - tss->io_bitmap_prev_max = next->io_bitmap_max; + tss->io_bitmap.prev_max = next->io_bitmap_max; tss->x86_tss.io_bitmap_base = IO_BITMAP_OFFSET_VALID; /* |