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x86/fpu: Rename 'xstate_features' to 'xfeatures_nr'
The name 'xstate_features' does not tell us whether it's a bitmap or any other value. That it's a count of features is only obvious if you read the code that calculates it. Rename it to the more descriptive 'xfeatures_nr' name. Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -25,7 +25,9 @@ struct xsave_struct *init_xstate_buf;
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static struct _fpx_sw_bytes fx_sw_reserved, fx_sw_reserved_ia32;
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static unsigned int *xstate_offsets, *xstate_sizes;
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static unsigned int xstate_comp_offsets[sizeof(xfeatures_mask)*8];
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static unsigned int xstate_features;
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/* The number of supported xfeatures in xfeatures_mask: */
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static unsigned int xfeatures_nr;
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/*
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* If a processor implementation discern that a processor state component is
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@ -465,9 +467,9 @@ static void __init setup_xstate_features(void)
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{
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int eax, ebx, ecx, edx, leaf = 0x2;
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xstate_features = fls64(xfeatures_mask);
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xstate_offsets = alloc_bootmem(xstate_features * sizeof(int));
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xstate_sizes = alloc_bootmem(xstate_features * sizeof(int));
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xfeatures_nr = fls64(xfeatures_mask);
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xstate_offsets = alloc_bootmem(xfeatures_nr * sizeof(int));
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xstate_sizes = alloc_bootmem(xfeatures_nr * sizeof(int));
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do {
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cpuid_count(XSTATE_CPUID, leaf, &eax, &ebx, &ecx, &edx);
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@ -528,7 +530,7 @@ void setup_xstate_comp(void)
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xstate_comp_offsets[1] = offsetof(struct i387_fxsave_struct, xmm_space);
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if (!cpu_has_xsaves) {
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for (i = 2; i < xstate_features; i++) {
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for (i = 2; i < xfeatures_nr; i++) {
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if (test_bit(i, (unsigned long *)&xfeatures_mask)) {
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xstate_comp_offsets[i] = xstate_offsets[i];
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xstate_comp_sizes[i] = xstate_sizes[i];
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@ -539,7 +541,7 @@ void setup_xstate_comp(void)
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xstate_comp_offsets[2] = FXSAVE_SIZE + XSAVE_HDR_SIZE;
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for (i = 2; i < xstate_features; i++) {
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for (i = 2; i < xfeatures_nr; i++) {
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if (test_bit(i, (unsigned long *)&xfeatures_mask))
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xstate_comp_sizes[i] = xstate_sizes[i];
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else
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