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x86/fpu: Remove unused supervisor only offsets 

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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220324134623.465066249@linutronix.de
This commit is contained in:
Thomas Gleixner 2022-03-24 14:47:09 +01:00 committed by Borislav Petkov
parent a9f84fb715
commit d47f71f6de
1 changed files with 0 additions and 30 deletions
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30
arch/x86/kernel/fpu/xstate.c
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@ -83,8 +83,6 @@ static unsigned int xstate_sizes[XFEATURE_MAX] __ro_after_init =
{ [ 0 ... XFEATURE_MAX - 1] = -1};
static unsigned int xstate_comp_offsets[XFEATURE_MAX] __ro_after_init =
{ [ 0 ... XFEATURE_MAX - 1] = -1};
static unsigned int xstate_supervisor_only_offsets[XFEATURE_MAX] __ro_after_init =
{ [ 0 ... XFEATURE_MAX - 1] = -1};
/*
* Return whether the system supports a given xfeature.
@ -324,33 +322,6 @@ static void __init setup_xstate_comp_offsets(void)
}
}
/*
* Setup offsets of a supervisor-state-only XSAVES buffer:
*
* The offsets stored in xstate_comp_offsets[] only work for one specific
* value of the Requested Feature BitMap (RFBM). In cases where a different
* RFBM value is used, a different set of offsets is required. This set of
* offsets is for when RFBM=xfeatures_mask_supervisor().
*/
static void __init setup_supervisor_only_offsets(void)
{
unsigned int next_offset;
int i;
next_offset = FXSAVE_SIZE + XSAVE_HDR_SIZE;
for_each_extended_xfeature(i, fpu_kernel_cfg.max_features) {
if (!xfeature_is_supervisor(i))
continue;
if (xfeature_is_aligned(i))
next_offset = ALIGN(next_offset, 64);
xstate_supervisor_only_offsets[i] = next_offset;
next_offset += xstate_sizes[i];
}
}
/*
* Print out xstate component offsets and sizes
*/
@ -951,7 +922,6 @@ void __init fpu__init_system_xstate(unsigned int legacy_size)
setup_init_fpu_buf();
setup_xstate_comp_offsets();
setup_supervisor_only_offsets();
/*
* Paranoia check whether something in the setup modified the