From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 24 Mar 2022 14:47:09 +0100
Subject: x86/fpu: Remove unused supervisor only offsets
Git-commit: d47f71f6de7970d504748d1a60a11c51af5bce47
Patch-mainline: 5.18-rc1
References: git-fixes
No users.
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
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
arch/x86/kernel/fpu/xstate.c | 30 ------------------------------
1 file changed, 30 deletions(-)
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -83,8 +83,6 @@ static unsigned int xstate_sizes[XFEATUR
{ [ 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.
@@ -325,33 +323,6 @@ static void __init setup_xstate_comp_off
}
/*
- * 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
*/
static void __init print_xstate_offset_size(void)
@@ -951,7 +922,6 @@ void __init fpu__init_system_xstate(unsi
setup_init_fpu_buf();
setup_xstate_comp_offsets();
- setup_supervisor_only_offsets();
/*
* Paranoia check whether something in the setup modified the