@@ -85,6 +85,7 @@ static void spe_begin(void)
static void spe_end(void)
{
+ disable_kernel_spe();
/* reenable preemption */
preempt_enable();
}
@@ -46,6 +46,7 @@ static void spe_begin(void)
static void spe_end(void)
{
+ disable_kernel_spe();
/* reenable preemption */
preempt_enable();
}
@@ -47,6 +47,7 @@ static void spe_begin(void)
static void spe_end(void)
{
+ disable_kernel_spe();
/* reenable preemption */
preempt_enable();
}
@@ -46,6 +46,11 @@ static inline void discard_lazy_cpu_state(void)
}
#endif
+static inline void disable_kernel_fp(void) { }
+static inline void disable_kernel_altivec(void) { }
+static inline void disable_kernel_spe(void) { }
+static inline void disable_kernel_vsx(void) { }
+
#ifdef CONFIG_PPC_FPU
extern void flush_fp_to_thread(struct task_struct *);
extern void giveup_fpu(struct task_struct *);
@@ -960,6 +960,7 @@ int fix_alignment(struct pt_regs *regs)
preempt_disable();
enable_kernel_fp();
cvt_df(&data.dd, (float *)&data.x32.low32);
+ disable_kernel_fp();
preempt_enable();
#else
return 0;
@@ -1000,6 +1001,7 @@ int fix_alignment(struct pt_regs *regs)
preempt_disable();
enable_kernel_fp();
cvt_fd((float *)&data.x32.low32, &data.dd);
+ disable_kernel_fp();
preempt_enable();
#else
return 0;
@@ -1265,6 +1265,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu)
if (rcomp)
kvmppc_set_cr(vcpu, cr);
+ disable_kernel_fp();
preempt_enable();
return emulated;
@@ -751,6 +751,7 @@ static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr,
preempt_disable();
enable_kernel_fp();
load_fp_state(&vcpu->arch.fp);
+ disable_kernel_fp();
t->fp_save_area = &vcpu->arch.fp;
preempt_enable();
}
@@ -760,6 +761,7 @@ static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr,
preempt_disable();
enable_kernel_altivec();
load_vr_state(&vcpu->arch.vr);
+ disable_kernel_altivec();
t->vr_save_area = &vcpu->arch.vr;
preempt_enable();
#endif
@@ -788,6 +790,7 @@ static void kvmppc_handle_lost_ext(struct kvm_vcpu *vcpu)
preempt_disable();
enable_kernel_fp();
load_fp_state(&vcpu->arch.fp);
+ disable_kernel_fp();
preempt_enable();
}
#ifdef CONFIG_ALTIVEC
@@ -795,6 +798,7 @@ static void kvmppc_handle_lost_ext(struct kvm_vcpu *vcpu)
preempt_disable();
enable_kernel_altivec();
load_vr_state(&vcpu->arch.vr);
+ disable_kernel_altivec();
preempt_enable();
}
#endif
@@ -98,6 +98,7 @@ void kvmppc_vcpu_disable_spe(struct kvm_vcpu *vcpu)
preempt_disable();
enable_kernel_spe();
kvmppc_save_guest_spe(vcpu);
+ disable_kernel_spe();
vcpu->arch.shadow_msr &= ~MSR_SPE;
preempt_enable();
}
@@ -107,6 +108,7 @@ static void kvmppc_vcpu_enable_spe(struct kvm_vcpu *vcpu)
preempt_disable();
enable_kernel_spe();
kvmppc_load_guest_spe(vcpu);
+ disable_kernel_spe();
vcpu->arch.shadow_msr |= MSR_SPE;
preempt_enable();
}
@@ -141,6 +143,7 @@ static inline void kvmppc_load_guest_fp(struct kvm_vcpu *vcpu)
if (!(current->thread.regs->msr & MSR_FP)) {
enable_kernel_fp();
load_fp_state(&vcpu->arch.fp);
+ disable_kernel_fp();
current->thread.fp_save_area = &vcpu->arch.fp;
current->thread.regs->msr |= MSR_FP;
}
@@ -182,6 +185,7 @@ static inline void kvmppc_load_guest_altivec(struct kvm_vcpu *vcpu)
if (!(current->thread.regs->msr & MSR_VEC)) {
enable_kernel_altivec();
load_vr_state(&vcpu->arch.vr);
+ disable_kernel_altivec();
current->thread.vr_save_area = &vcpu->arch.vr;
current->thread.regs->msr |= MSR_VEC;
}
@@ -46,6 +46,7 @@ int enter_vmx_usercopy(void)
*/
int exit_vmx_usercopy(void)
{
+ disable_kernel_altivec();
pagefault_enable();
preempt_enable();
return 0;
@@ -70,6 +71,7 @@ int enter_vmx_copy(void)
*/
void *exit_vmx_copy(void *dest)
{
+ disable_kernel_altivec();
preempt_enable();
return dest;
}
@@ -74,6 +74,7 @@ void xor_altivec_2(unsigned long bytes, unsigned long *v1_in,
v2 += 4;
} while (--lines > 0);
+ disable_kernel_altivec();
preempt_enable();
}
EXPORT_SYMBOL(xor_altivec_2);
@@ -102,6 +103,7 @@ void xor_altivec_3(unsigned long bytes, unsigned long *v1_in,
v3 += 4;
} while (--lines > 0);
+ disable_kernel_altivec();
preempt_enable();
}
EXPORT_SYMBOL(xor_altivec_3);
@@ -135,6 +137,7 @@ void xor_altivec_4(unsigned long bytes, unsigned long *v1_in,
v4 += 4;
} while (--lines > 0);
+ disable_kernel_altivec();
preempt_enable();
}
EXPORT_SYMBOL(xor_altivec_4);
@@ -172,6 +175,7 @@ void xor_altivec_5(unsigned long bytes, unsigned long *v1_in,
v5 += 4;
} while (--lines > 0);
+ disable_kernel_altivec();
preempt_enable();
}
EXPORT_SYMBOL(xor_altivec_5);
@@ -86,6 +86,7 @@ static int p8_aes_setkey(struct crypto_tfm *tfm, const u8 *key,
enable_kernel_vsx();
ret = aes_p8_set_encrypt_key(key, keylen * 8, &ctx->enc_key);
ret += aes_p8_set_decrypt_key(key, keylen * 8, &ctx->dec_key);
+ disable_kernel_vsx();
pagefault_enable();
preempt_enable();
@@ -104,6 +105,7 @@ static void p8_aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
pagefault_disable();
enable_kernel_vsx();
aes_p8_encrypt(src, dst, &ctx->enc_key);
+ disable_kernel_vsx();
pagefault_enable();
preempt_enable();
}
@@ -120,6 +122,7 @@ static void p8_aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
pagefault_disable();
enable_kernel_vsx();
aes_p8_decrypt(src, dst, &ctx->dec_key);
+ disable_kernel_vsx();
pagefault_enable();
preempt_enable();
}
@@ -87,6 +87,7 @@ static int p8_aes_cbc_setkey(struct crypto_tfm *tfm, const u8 *key,
enable_kernel_vsx();
ret = aes_p8_set_encrypt_key(key, keylen * 8, &ctx->enc_key);
ret += aes_p8_set_decrypt_key(key, keylen * 8, &ctx->dec_key);
+ disable_kernel_vsx();
pagefault_enable();
preempt_enable();
@@ -127,6 +128,7 @@ static int p8_aes_cbc_encrypt(struct blkcipher_desc *desc,
ret = blkcipher_walk_done(desc, &walk, nbytes);
}
+ disable_kernel_vsx();
pagefault_enable();
preempt_enable();
}
@@ -167,6 +169,7 @@ static int p8_aes_cbc_decrypt(struct blkcipher_desc *desc,
ret = blkcipher_walk_done(desc, &walk, nbytes);
}
+ disable_kernel_vsx();
pagefault_enable();
preempt_enable();
}
@@ -83,6 +83,7 @@ static int p8_aes_ctr_setkey(struct crypto_tfm *tfm, const u8 *key,
pagefault_disable();
enable_kernel_vsx();
ret = aes_p8_set_encrypt_key(key, keylen * 8, &ctx->enc_key);
+ disable_kernel_vsx();
pagefault_enable();
ret += crypto_blkcipher_setkey(ctx->fallback, key, keylen);
@@ -101,6 +102,7 @@ static void p8_aes_ctr_final(struct p8_aes_ctr_ctx *ctx,
pagefault_disable();
enable_kernel_vsx();
aes_p8_encrypt(ctrblk, keystream, &ctx->enc_key);
+ disable_kernel_vsx();
pagefault_enable();
crypto_xor(keystream, src, nbytes);
@@ -139,6 +141,7 @@ static int p8_aes_ctr_crypt(struct blkcipher_desc *desc,
AES_BLOCK_SIZE,
&ctx->enc_key,
walk.iv);
+ disable_kernel_vsx();
pagefault_enable();
/* We need to update IV mostly for last bytes/round */
@@ -120,6 +120,7 @@ static int p8_ghash_setkey(struct crypto_shash *tfm, const u8 *key,
pagefault_disable();
enable_kernel_vsx();
gcm_init_p8(ctx->htable, (const u64 *) key);
+ disable_kernel_vsx();
pagefault_enable();
preempt_enable();
return crypto_shash_setkey(ctx->fallback, key, keylen);
@@ -150,6 +151,7 @@ static int p8_ghash_update(struct shash_desc *desc,
enable_kernel_vsx();
gcm_ghash_p8(dctx->shash, ctx->htable,
dctx->buffer, GHASH_DIGEST_SIZE);
+ disable_kernel_vsx();
pagefault_enable();
preempt_enable();
src += GHASH_DIGEST_SIZE - dctx->bytes;
@@ -162,6 +164,7 @@ static int p8_ghash_update(struct shash_desc *desc,
pagefault_disable();
enable_kernel_vsx();
gcm_ghash_p8(dctx->shash, ctx->htable, src, len);
+ disable_kernel_vsx();
pagefault_enable();
preempt_enable();
src += len;
@@ -192,6 +195,7 @@ static int p8_ghash_final(struct shash_desc *desc, u8 *out)
enable_kernel_vsx();
gcm_ghash_p8(dctx->shash, ctx->htable,
dctx->buffer, GHASH_DIGEST_SIZE);
+ disable_kernel_vsx();
pagefault_enable();
preempt_enable();
dctx->bytes = 0;
@@ -101,6 +101,7 @@ static void raid6_altivec$#_gen_syndrome(int disks, size_t bytes, void **ptrs)
raid6_altivec$#_gen_syndrome_real(disks, bytes, ptrs);
+ disable_kernel_altivec();
preempt_enable();
}