xstate.c (8459429693395ca9e8d18101300b120ad9171795) xstate.c (62b5f7d013fc455b8db26cf01e421f4c0d264b92)
1/*
2 * xsave/xrstor support.
3 *
4 * Author: Suresh Siddha <suresh.b.siddha@intel.com>
5 */
6#include <linux/compat.h>
7#include <linux/cpu.h>
8#include <linux/pkeys.h>

--- 863 unchanged lines hidden (view full) ---

872 unsigned long init_val)
873{
874 struct xregs_state *xsave = &tsk->thread.fpu.state.xsave;
875 struct pkru_state *old_pkru_state;
876 struct pkru_state new_pkru_state;
877 int pkey_shift = (pkey * PKRU_BITS_PER_PKEY);
878 u32 new_pkru_bits = 0;
879
1/*
2 * xsave/xrstor support.
3 *
4 * Author: Suresh Siddha <suresh.b.siddha@intel.com>
5 */
6#include <linux/compat.h>
7#include <linux/cpu.h>
8#include <linux/pkeys.h>

--- 863 unchanged lines hidden (view full) ---

872 unsigned long init_val)
873{
874 struct xregs_state *xsave = &tsk->thread.fpu.state.xsave;
875 struct pkru_state *old_pkru_state;
876 struct pkru_state new_pkru_state;
877 int pkey_shift = (pkey * PKRU_BITS_PER_PKEY);
878 u32 new_pkru_bits = 0;
879
880 if (!validate_pkey(pkey))
881 return -EINVAL;
882 /*
883 * This check implies XSAVE support. OSPKE only gets
884 * set if we enable XSAVE and we enable PKU in XCR0.
885 */
886 if (!boot_cpu_has(X86_FEATURE_OSPKE))
887 return -EINVAL;
888
889 /* Set the bits we need in PKRU */

--- 42 unchanged lines hidden --- 		880 /*
881 * This check implies XSAVE support. OSPKE only gets
882 * set if we enable XSAVE and we enable PKU in XCR0.
883 */
884 if (!boot_cpu_has(X86_FEATURE_OSPKE))
885 return -EINVAL;
886
887 /* Set the bits we need in PKRU */

--- 42 unchanged lines hidden ---