diff options
Diffstat (limited to 'arch/x86/kernel/xsave.c')
| -rw-r--r-- | arch/x86/kernel/xsave.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c index ada87a329ed..a4b451c6add 100644 --- a/arch/x86/kernel/xsave.c +++ b/arch/x86/kernel/xsave.c @@ -243,7 +243,7 @@ int save_xstate_sig(void __user *buf, void __user *buf_fx, int size) if (!access_ok(VERIFY_WRITE, buf, size)) return -EACCES; - if (!HAVE_HWFP) + if (!static_cpu_has(X86_FEATURE_FPU)) return fpregs_soft_get(current, NULL, 0, sizeof(struct user_i387_ia32_struct), NULL, (struct _fpstate_ia32 __user *) buf) ? -1 : 1; @@ -350,11 +350,10 @@ int __restore_xstate_sig(void __user *buf, void __user *buf_fx, int size) if (!used_math() && init_fpu(tsk)) return -1; - if (!HAVE_HWFP) { + if (!static_cpu_has(X86_FEATURE_FPU)) return fpregs_soft_set(current, NULL, 0, sizeof(struct user_i387_ia32_struct), NULL, buf) != 0; - } if (use_xsave()) { struct _fpx_sw_bytes fx_sw_user; @@ -563,6 +562,16 @@ static void __init xstate_enable_boot_cpu(void) if (cpu_has_xsaveopt && eagerfpu != DISABLE) eagerfpu = ENABLE; + if (pcntxt_mask & XSTATE_EAGER) { + if (eagerfpu == DISABLE) { + pr_err("eagerfpu not present, disabling some xstate features: 0x%llx\n", + pcntxt_mask & XSTATE_EAGER); + pcntxt_mask &= ~XSTATE_EAGER; + } else { + eagerfpu = ENABLE; + } + } + pr_info("enabled xstate_bv 0x%llx, cntxt size 0x%x\n", pcntxt_mask, xstate_size); } @@ -574,7 +583,7 @@ static void __init xstate_enable_boot_cpu(void) * This is somewhat obfuscated due to the lack of powerful enough * overrides for the section checks. */ -void __cpuinit xsave_init(void) +void xsave_init(void) { static __refdata void (*next_func)(void) = xstate_enable_boot_cpu; void (*this_func)(void); @@ -595,7 +604,7 @@ static inline void __init eager_fpu_init_bp(void) setup_init_fpu_buf(); } -void __cpuinit eager_fpu_init(void) +void eager_fpu_init(void) { static __refdata void (*boot_func)(void) = eager_fpu_init_bp; |