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-rw-r--r--arch/x86/events/intel/lbr.c6
-rw-r--r--arch/x86/include/asm/fpu/xstate.h22
-rw-r--r--arch/x86/kernel/fpu/xstate.c62
3 files changed, 45 insertions, 45 deletions
diff --git a/arch/x86/events/intel/lbr.c b/arch/x86/events/intel/lbr.c
index 4409d2cccfda..2fa2df3d4e9b 100644
--- a/arch/x86/events/intel/lbr.c
+++ b/arch/x86/events/intel/lbr.c
@@ -491,7 +491,7 @@ static void intel_pmu_arch_lbr_xrstors(void *ctx)
{
struct x86_perf_task_context_arch_lbr_xsave *task_ctx = ctx;
- copy_kernel_to_dynamic_supervisor(&task_ctx->xsave, XFEATURE_MASK_LBR);
+ copy_kernel_to_independent_supervisor(&task_ctx->xsave, XFEATURE_MASK_LBR);
}
static __always_inline bool lbr_is_reset_in_cstate(void *ctx)
@@ -576,7 +576,7 @@ static void intel_pmu_arch_lbr_xsaves(void *ctx)
{
struct x86_perf_task_context_arch_lbr_xsave *task_ctx = ctx;
- copy_dynamic_supervisor_to_kernel(&task_ctx->xsave, XFEATURE_MASK_LBR);
+ copy_independent_supervisor_to_kernel(&task_ctx->xsave, XFEATURE_MASK_LBR);
}
static void __intel_pmu_lbr_save(void *ctx)
@@ -992,7 +992,7 @@ static void intel_pmu_arch_lbr_read_xsave(struct cpu_hw_events *cpuc)
intel_pmu_store_lbr(cpuc, NULL);
return;
}
- copy_dynamic_supervisor_to_kernel(&xsave->xsave, XFEATURE_MASK_LBR);
+ copy_independent_supervisor_to_kernel(&xsave->xsave, XFEATURE_MASK_LBR);
intel_pmu_store_lbr(cpuc, xsave->lbr.entries);
}
diff --git a/arch/x86/include/asm/fpu/xstate.h b/arch/x86/include/asm/fpu/xstate.h
index 00e1a2ac5239..a55bd5cabb59 100644
--- a/arch/x86/include/asm/fpu/xstate.h
+++ b/arch/x86/include/asm/fpu/xstate.h
@@ -42,21 +42,21 @@
* and its size may be huge. Saving/restoring such supervisor state components
* at each context switch can cause high CPU and space overhead, which should
* be avoided. Such supervisor state components should only be saved/restored
- * on demand. The on-demand dynamic supervisor features are set in this mask.
+ * on demand. The on-demand supervisor features are set in this mask.
*
- * Unlike the existing supported supervisor features, a dynamic supervisor
+ * Unlike the existing supported supervisor features, an independent supervisor
* feature does not allocate a buffer in task->fpu, and the corresponding
* supervisor state component cannot be saved/restored at each context switch.
*
- * To support a dynamic supervisor feature, a developer should follow the
+ * To support an independent supervisor feature, a developer should follow the
* dos and don'ts as below:
* - Do dynamically allocate a buffer for the supervisor state component.
* - Do manually invoke the XSAVES/XRSTORS instruction to save/restore the
* state component to/from the buffer.
- * - Don't set the bit corresponding to the dynamic supervisor feature in
+ * - Don't set the bit corresponding to the independent supervisor feature in
* IA32_XSS at run time, since it has been set at boot time.
*/
-#define XFEATURE_MASK_DYNAMIC (XFEATURE_MASK_LBR)
+#define XFEATURE_MASK_INDEPENDENT (XFEATURE_MASK_LBR)
/*
* Unsupported supervisor features. When a supervisor feature in this mask is
@@ -66,7 +66,7 @@
/* All supervisor states including supported and unsupported states. */
#define XFEATURE_MASK_SUPERVISOR_ALL (XFEATURE_MASK_SUPERVISOR_SUPPORTED | \
- XFEATURE_MASK_DYNAMIC | \
+ XFEATURE_MASK_INDEPENDENT | \
XFEATURE_MASK_SUPERVISOR_UNSUPPORTED)
#ifdef CONFIG_X86_64
@@ -87,12 +87,12 @@ static inline u64 xfeatures_mask_user(void)
return xfeatures_mask_all & XFEATURE_MASK_USER_SUPPORTED;
}
-static inline u64 xfeatures_mask_dynamic(void)
+static inline u64 xfeatures_mask_independent(void)
{
if (!boot_cpu_has(X86_FEATURE_ARCH_LBR))
- return XFEATURE_MASK_DYNAMIC & ~XFEATURE_MASK_LBR;
+ return XFEATURE_MASK_INDEPENDENT & ~XFEATURE_MASK_LBR;
- return XFEATURE_MASK_DYNAMIC;
+ return XFEATURE_MASK_INDEPENDENT;
}
extern u64 xstate_fx_sw_bytes[USER_XSTATE_FX_SW_WORDS];
@@ -104,8 +104,8 @@ void *get_xsave_addr(struct xregs_state *xsave, int xfeature_nr);
int xfeature_size(int xfeature_nr);
int copy_uabi_from_kernel_to_xstate(struct xregs_state *xsave, const void *kbuf);
int copy_sigframe_from_user_to_xstate(struct xregs_state *xsave, const void __user *ubuf);
-void copy_dynamic_supervisor_to_kernel(struct xregs_state *xstate, u64 mask);
-void copy_kernel_to_dynamic_supervisor(struct xregs_state *xstate, u64 mask);
+void copy_independent_supervisor_to_kernel(struct xregs_state *xstate, u64 mask);
+void copy_kernel_to_independent_supervisor(struct xregs_state *xstate, u64 mask);
enum xstate_copy_mode {
XSTATE_COPY_FP,
diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
index 0eb42a1b11e1..27246a83ecb9 100644
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -151,7 +151,7 @@ void fpu__init_cpu_xstate(void)
*/
if (boot_cpu_has(X86_FEATURE_XSAVES)) {
wrmsrl(MSR_IA32_XSS, xfeatures_mask_supervisor() |
- xfeatures_mask_dynamic());
+ xfeatures_mask_independent());
}
}
@@ -551,7 +551,7 @@ static void check_xstate_against_struct(int nr)
* how large the XSAVE buffer needs to be. We are recalculating
* it to be safe.
*
- * Dynamic XSAVE features allocate their own buffers and are not
+ * Independent XSAVE features allocate their own buffers and are not
* covered by these checks. Only the size of the buffer for task->fpu
* is checked here.
*/
@@ -617,18 +617,18 @@ static unsigned int __init get_xsaves_size(void)
}
/*
- * Get the total size of the enabled xstates without the dynamic supervisor
+ * Get the total size of the enabled xstates without the independent supervisor
* features.
*/
-static unsigned int __init get_xsaves_size_no_dynamic(void)
+static unsigned int __init get_xsaves_size_no_independent(void)
{
- u64 mask = xfeatures_mask_dynamic();
+ u64 mask = xfeatures_mask_independent();
unsigned int size;
if (!mask)
return get_xsaves_size();
- /* Disable dynamic features. */
+ /* Disable independent features. */
wrmsrl(MSR_IA32_XSS, xfeatures_mask_supervisor());
/*
@@ -637,7 +637,7 @@ static unsigned int __init get_xsaves_size_no_dynamic(void)
*/
size = get_xsaves_size();
- /* Re-enable dynamic features so XSAVES will work on them again. */
+ /* Re-enable independent features so XSAVES will work on them again. */
wrmsrl(MSR_IA32_XSS, xfeatures_mask_supervisor() | mask);
return size;
@@ -680,7 +680,7 @@ static int __init init_xstate_size(void)
xsave_size = get_xsave_size();
if (boot_cpu_has(X86_FEATURE_XSAVES))
- possible_xstate_size = get_xsaves_size_no_dynamic();
+ possible_xstate_size = get_xsaves_size_no_independent();
else
possible_xstate_size = xsave_size;
@@ -837,7 +837,7 @@ void fpu__resume_cpu(void)
*/
if (boot_cpu_has(X86_FEATURE_XSAVES)) {
wrmsrl(MSR_IA32_XSS, xfeatures_mask_supervisor() |
- xfeatures_mask_dynamic());
+ xfeatures_mask_independent());
}
}
@@ -1163,34 +1163,34 @@ int copy_sigframe_from_user_to_xstate(struct xregs_state *xsave,
}
/**
- * copy_dynamic_supervisor_to_kernel() - Save dynamic supervisor states to
- * an xsave area
+ * copy_independent_supervisor_to_kernel() - Save independent supervisor states to
+ * an xsave area
* @xstate: A pointer to an xsave area
- * @mask: Represent the dynamic supervisor features saved into the xsave area
+ * @mask: Represent the independent supervisor features saved into the xsave area
*
- * Only the dynamic supervisor states sets in the mask are saved into the xsave
- * area (See the comment in XFEATURE_MASK_DYNAMIC for the details of dynamic
- * supervisor feature). Besides the dynamic supervisor states, the legacy
+ * Only the independent supervisor states sets in the mask are saved into the xsave
+ * area (See the comment in XFEATURE_MASK_INDEPENDENT for the details of independent
+ * supervisor feature). Besides the independent supervisor states, the legacy
* region and XSAVE header are also saved into the xsave area. The supervisor
* features in the XFEATURE_MASK_SUPERVISOR_SUPPORTED and
* XFEATURE_MASK_SUPERVISOR_UNSUPPORTED are not saved.
*
* The xsave area must be 64-bytes aligned.
*/
-void copy_dynamic_supervisor_to_kernel(struct xregs_state *xstate, u64 mask)
+void copy_independent_supervisor_to_kernel(struct xregs_state *xstate, u64 mask)
{
- u64 dynamic_mask = xfeatures_mask_dynamic() & mask;
+ u64 independent_mask = xfeatures_mask_independent() & mask;
u32 lmask, hmask;
int err;
if (WARN_ON_FPU(!boot_cpu_has(X86_FEATURE_XSAVES)))
return;
- if (WARN_ON_FPU(!dynamic_mask))
+ if (WARN_ON_FPU(!independent_mask))
return;
- lmask = dynamic_mask;
- hmask = dynamic_mask >> 32;
+ lmask = independent_mask;
+ hmask = independent_mask >> 32;
XSTATE_OP(XSAVES, xstate, lmask, hmask, err);
@@ -1199,34 +1199,34 @@ void copy_dynamic_supervisor_to_kernel(struct xregs_state *xstate, u64 mask)
}
/**
- * copy_kernel_to_dynamic_supervisor() - Restore dynamic supervisor states from
- * an xsave area
+ * copy_kernel_to_independent_supervisor() - Restore independent supervisor states from
+ * an xsave area
* @xstate: A pointer to an xsave area
- * @mask: Represent the dynamic supervisor features restored from the xsave area
+ * @mask: Represent the independent supervisor features restored from the xsave area
*
- * Only the dynamic supervisor states sets in the mask are restored from the
- * xsave area (See the comment in XFEATURE_MASK_DYNAMIC for the details of
- * dynamic supervisor feature). Besides the dynamic supervisor states, the
+ * Only the independent supervisor states sets in the mask are restored from the
+ * xsave area (See the comment in XFEATURE_MASK_INDEPENDENT for the details of
+ * independent supervisor feature). Besides the independent supervisor states, the
* legacy region and XSAVE header are also restored from the xsave area. The
* supervisor features in the XFEATURE_MASK_SUPERVISOR_SUPPORTED and
* XFEATURE_MASK_SUPERVISOR_UNSUPPORTED are not restored.
*
* The xsave area must be 64-bytes aligned.
*/
-void copy_kernel_to_dynamic_supervisor(struct xregs_state *xstate, u64 mask)
+void copy_kernel_to_independent_supervisor(struct xregs_state *xstate, u64 mask)
{
- u64 dynamic_mask = xfeatures_mask_dynamic() & mask;
+ u64 independent_mask = xfeatures_mask_independent() & mask;
u32 lmask, hmask;
int err;
if (WARN_ON_FPU(!boot_cpu_has(X86_FEATURE_XSAVES)))
return;
- if (WARN_ON_FPU(!dynamic_mask))
+ if (WARN_ON_FPU(!independent_mask))
return;
- lmask = dynamic_mask;
- hmask = dynamic_mask >> 32;
+ lmask = independent_mask;
+ hmask = independent_mask >> 32;
XSTATE_OP(XRSTORS, xstate, lmask, hmask, err);