From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
Tony Luck <tony.luck@intel.com>,
Yu-cheng Yu <yu-cheng.yu@intel.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Borislav Petkov <bp@suse.de>,
Peter Zijlstra <peterz@infradead.org>,
Kan Liang <kan.liang@linux.intel.com>
Subject: [patch 12/41] x86/fpu: Rename copy_xregs_to_kernel() and copy_kernel_to_xregs()
Date: Fri, 11 Jun 2021 18:15:35 +0200 [thread overview]
Message-ID: <20210611163112.250542573@linutronix.de> (raw)
In-Reply-To: 20210611161523.508908024@linutronix.de
The function names for xsave[s]/xrstor[s] operations are horribly named and
a permanent source of confusion.
Rename:
copy_xregs_to_kernel() to xsave_to_kernel()
copy_kernel_to_xregs() to xrstor_from_kernel()
so it's entirely clear what this is about.
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/include/asm/fpu/internal.h | 12 ++++++------
arch/x86/kernel/fpu/core.c | 6 +++---
arch/x86/kernel/fpu/signal.c | 14 +++++++-------
arch/x86/kernel/fpu/xstate.c | 4 ++--
4 files changed, 18 insertions(+), 18 deletions(-)
--- a/arch/x86/include/asm/fpu/internal.h
+++ b/arch/x86/include/asm/fpu/internal.h
@@ -256,7 +256,7 @@ static inline void copy_fxregs_to_kernel
* This function is called only during boot time when x86 caps are not set
* up and alternative can not be used yet.
*/
-static inline void copy_xregs_to_kernel_booting(struct xregs_state *xstate)
+static inline void xsave_to_kernel_booting(struct xregs_state *xstate)
{
u64 mask = xfeatures_mask_all;
u32 lmask = mask;
@@ -278,7 +278,7 @@ static inline void copy_xregs_to_kernel_
* This function is called only during boot time when x86 caps are not set
* up and alternative can not be used yet.
*/
-static inline void copy_kernel_to_xregs_booting(struct xregs_state *xstate)
+static inline void xrstor_from_kernel_booting(struct xregs_state *xstate)
{
u64 mask = -1;
u32 lmask = mask;
@@ -302,7 +302,7 @@ static inline void copy_kernel_to_xregs_
/*
* Save processor xstate to xsave area.
*/
-static inline void copy_xregs_to_kernel(struct xregs_state *xstate)
+static inline void xsave_to_kernel(struct xregs_state *xstate)
{
u64 mask = xfeatures_mask_all;
u32 lmask = mask;
@@ -320,7 +320,7 @@ static inline void copy_xregs_to_kernel(
/*
* Restore processor xstate from xsave area.
*/
-static inline void copy_kernel_to_xregs(struct xregs_state *xstate, u64 mask)
+static inline void xrstor_from_kernel(struct xregs_state *xstate, u64 mask)
{
u32 lmask = mask;
u32 hmask = mask >> 32;
@@ -381,7 +381,7 @@ static inline int copy_user_to_xregs(str
* Restore xstate from kernel space xsave area, return an error code instead of
* an exception.
*/
-static inline int copy_kernel_to_xregs_err(struct xregs_state *xstate, u64 mask)
+static inline int xrstor_from_kernel_err(struct xregs_state *xstate, u64 mask)
{
u32 lmask = mask;
u32 hmask = mask >> 32;
@@ -400,7 +400,7 @@ extern int copy_fpregs_to_fpstate(struct
static inline void __copy_kernel_to_fpregs(union fpregs_state *fpstate, u64 mask)
{
if (use_xsave()) {
- copy_kernel_to_xregs(&fpstate->xsave, mask);
+ xrstor_from_kernel(&fpstate->xsave, mask);
} else {
if (use_fxsr())
copy_kernel_to_fxregs(&fpstate->fxsave);
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -95,7 +95,7 @@ EXPORT_SYMBOL(irq_fpu_usable);
int copy_fpregs_to_fpstate(struct fpu *fpu)
{
if (likely(use_xsave())) {
- copy_xregs_to_kernel(&fpu->state.xsave);
+ xsave_to_kernel(&fpu->state.xsave);
/*
* AVX512 state is tracked here because its use is
@@ -358,7 +358,7 @@ void fpu__drop(struct fpu *fpu)
static inline void copy_init_fpstate_to_fpregs(u64 features_mask)
{
if (use_xsave())
- copy_kernel_to_xregs(&init_fpstate.xsave, features_mask);
+ xrstor_from_kernel(&init_fpstate.xsave, features_mask);
else if (static_cpu_has(X86_FEATURE_FXSR))
copy_kernel_to_fxregs(&init_fpstate.fxsave);
else
@@ -389,7 +389,7 @@ static void fpu__clear(struct fpu *fpu,
if (user_only) {
if (!fpregs_state_valid(fpu, smp_processor_id()) &&
xfeatures_mask_supervisor())
- copy_kernel_to_xregs(&fpu->state.xsave,
+ xrstor_from_kernel(&fpu->state.xsave,
xfeatures_mask_supervisor());
copy_init_fpstate_to_fpregs(xfeatures_mask_user());
} else {
--- a/arch/x86/kernel/fpu/signal.c
+++ b/arch/x86/kernel/fpu/signal.c
@@ -271,14 +271,14 @@ static int copy_user_to_fpregs_zeroing(v
r = copy_user_to_fxregs(buf);
if (!r)
- copy_kernel_to_xregs(&init_fpstate.xsave, init_bv);
+ xrstor_from_kernel(&init_fpstate.xsave, init_bv);
return r;
} else {
init_bv = xfeatures_mask_user() & ~xbv;
r = copy_user_to_xregs(buf, xbv);
if (!r && unlikely(init_bv))
- copy_kernel_to_xregs(&init_fpstate.xsave, init_bv);
+ xrstor_from_kernel(&init_fpstate.xsave, init_bv);
return r;
}
} else if (use_fxsr()) {
@@ -367,7 +367,7 @@ static int __fpu__restore_sig(void __use
*/
if (test_thread_flag(TIF_NEED_FPU_LOAD) &&
xfeatures_mask_supervisor())
- copy_kernel_to_xregs(&fpu->state.xsave,
+ xrstor_from_kernel(&fpu->state.xsave,
xfeatures_mask_supervisor());
fpregs_mark_activate();
fpregs_unlock();
@@ -422,7 +422,7 @@ static int __fpu__restore_sig(void __use
* above XRSTOR failed or ia32_fxstate is true. Shrug.
*/
if (xfeatures_mask_supervisor())
- copy_xregs_to_kernel(&fpu->state.xsave);
+ xsave_to_kernel(&fpu->state.xsave);
set_thread_flag(TIF_NEED_FPU_LOAD);
}
__fpu_invalidate_fpregs_state(fpu);
@@ -440,13 +440,13 @@ static int __fpu__restore_sig(void __use
fpregs_lock();
if (unlikely(init_bv))
- copy_kernel_to_xregs(&init_fpstate.xsave, init_bv);
+ xrstor_from_kernel(&init_fpstate.xsave, init_bv);
/*
* Restore previously saved supervisor xstates along with
* copied-in user xstates.
*/
- ret = copy_kernel_to_xregs_err(&fpu->state.xsave,
+ ret = xrstor_from_kernel_err(&fpu->state.xsave,
user_xfeatures | xfeatures_mask_supervisor());
} else if (use_fxsr()) {
@@ -464,7 +464,7 @@ static int __fpu__restore_sig(void __use
u64 init_bv;
init_bv = xfeatures_mask_user() & ~XFEATURE_MASK_FPSSE;
- copy_kernel_to_xregs(&init_fpstate.xsave, init_bv);
+ xrstor_from_kernel(&init_fpstate.xsave, init_bv);
}
ret = copy_kernel_to_fxregs_err(&fpu->state.fxsave);
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -388,13 +388,13 @@ static void __init setup_init_fpu_buf(vo
/*
* Init all the features state with header.xfeatures being 0x0
*/
- copy_kernel_to_xregs_booting(&init_fpstate.xsave);
+ xrstor_from_kernel_booting(&init_fpstate.xsave);
/*
* Dump the init state again. This is to identify the init state
* of any feature which is not represented by all zero's.
*/
- copy_xregs_to_kernel_booting(&init_fpstate.xsave);
+ xsave_to_kernel_booting(&init_fpstate.xsave);
}
static int xfeature_uncompacted_offset(int xfeature_nr)
next prev parent reply other threads:[~2021-06-11 16:44 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-11 16:15 [patch 00/41] x86/fpu: Spring cleaning and PKRU sanitizing Thomas Gleixner
2021-06-11 16:15 ` [patch 01/41] Revert a5eff7259790 ("x86/pkeys: Add PKRU value to init_fpstate") Thomas Gleixner
2021-06-11 17:04 ` Borislav Petkov
2021-06-11 16:15 ` [patch 02/41] x86/fpu: Mark various FPU states __ro_after_init Thomas Gleixner
2021-06-11 17:21 ` Borislav Petkov
2021-06-11 18:35 ` Andy Lutomirski
2021-06-11 16:15 ` [patch 03/41] x86/fpu: Remove unused get_xsave_field_ptr() Thomas Gleixner
2021-06-11 18:35 ` Andy Lutomirski
2021-06-11 16:15 ` [patch 04/41] x86/fpu: Move inlines where they belong Thomas Gleixner
2021-06-11 16:15 ` [patch 05/41] x86/fpu: Limit xstate copy size in xstateregs_set() Thomas Gleixner
2021-06-11 18:15 ` Borislav Petkov
2021-06-11 18:37 ` Andy Lutomirski
2021-06-11 19:37 ` Thomas Gleixner
2021-06-11 16:15 ` [patch 06/41] x86/fpu: Sanitize xstateregs_set() Thomas Gleixner
2021-06-11 18:45 ` Andy Lutomirski
2021-06-11 20:23 ` Thomas Gleixner
2021-06-11 16:15 ` [patch 07/41] x86/fpu: Simplify PTRACE_GETREGS code Thomas Gleixner
2021-06-11 18:47 ` Andy Lutomirski
2021-06-12 9:13 ` Borislav Petkov
2021-06-11 16:15 ` [patch 08/41] x86/fpu: Restrict fpstate sanitizing to legacy components Thomas Gleixner
2021-06-11 19:03 ` Andy Lutomirski
2021-06-11 19:18 ` Andy Lutomirski
2021-06-11 20:33 ` Thomas Gleixner
2021-06-11 20:34 ` Thomas Gleixner
2021-06-11 20:27 ` Thomas Gleixner
2021-06-11 22:12 ` Thomas Gleixner
2021-06-12 13:15 ` Thomas Gleixner
2021-06-12 22:05 ` Thomas Gleixner
2021-06-11 16:15 ` [patch 09/41] x86/kvm: Avoid looking up PKRU in XSAVE buffer Thomas Gleixner
2021-06-14 10:26 ` Borislav Petkov
2021-06-14 19:34 ` Dave Hansen
2021-06-15 10:09 ` Borislav Petkov
2021-06-11 16:15 ` [patch 10/41] x86/fpu: Cleanup arch_set_user_pkey_access() Thomas Gleixner
2021-06-11 16:15 ` [patch 11/41] x86/fpu: Get rid of copy_supervisor_to_kernel() Thomas Gleixner
2021-06-11 19:42 ` Andy Lutomirski
2021-06-11 16:15 ` Thomas Gleixner [this message]
2021-06-11 16:15 ` [patch 13/41] x86/fpu: Rename copy_user_to_xregs() and copy_xregs_to_user() Thomas Gleixner
2021-06-11 16:15 ` [patch 14/41] x86/fpu: Rename fxregs related copy functions Thomas Gleixner
2021-06-11 16:15 ` [patch 15/41] x86/fpu: Rename fregs " Thomas Gleixner
2021-06-11 16:15 ` [patch 16/41] x86/fpu: Rename xstate copy functions which are related to UABI Thomas Gleixner
2021-06-11 16:15 ` [patch 17/41] x86/fpu: Deduplicate copy_uabi_from_user/kernel_to_xstate() Thomas Gleixner
2021-06-11 16:15 ` [patch 18/41] x86/fpu: Rename copy_fpregs_to_fpstate() to save_fpregs_to_fpstate() Thomas Gleixner
2021-06-11 16:15 ` [patch 19/41] x86/fpu: Rename copy_kernel_to_fpregs() to restore_fpregs_from_kernel() Thomas Gleixner
2021-06-11 16:15 ` [patch 20/41] x86/fpu: Rename initstate copy functions Thomas Gleixner
2021-06-11 16:15 ` [patch 21/41] x86/fpu: Rename "dynamic" XSTATEs to "independent" Thomas Gleixner
2021-06-11 16:15 ` [patch 22/41] x86/fpu/xstate: Sanitize handling of independent features Thomas Gleixner
2021-06-11 16:15 ` [patch 23/41] x86/pkeys: Move read_pkru() and write_pkru() Thomas Gleixner
2021-06-11 16:15 ` [patch 24/41] x86/fpu: Differentiate "copy" versus "move" of fpregs Thomas Gleixner
2021-06-11 16:15 ` [patch 25/41] x86/cpu: Sanitize X86_FEATURE_OSPKE Thomas Gleixner
2021-06-11 16:15 ` [patch 26/41] x86/pkru: Provide pkru_get_init_value() Thomas Gleixner
2021-06-11 16:15 ` [patch 27/41] x86/pkru: Provide pkru_write_default() Thomas Gleixner
2021-06-11 16:15 ` [patch 28/41] x86/cpu: Write the default PKRU value when enabling PKE Thomas Gleixner
2021-06-11 16:15 ` [patch 29/41] x86/fpu: Use pkru_write_default() in copy_init_fpstate_to_fpregs() Thomas Gleixner
2021-06-11 16:15 ` [patch 30/41] x86/fpu: Rename fpu__clear_all() to fpu_flush_thread() Thomas Gleixner
2021-06-11 16:15 ` [patch 31/41] x86/fpu: Clean up the fpu__clear() variants Thomas Gleixner
2021-06-11 16:15 ` [patch 32/41] x86/fpu: Rename __fpregs_load_activate() to fpregs_restore_userregs() Thomas Gleixner
2021-06-11 16:15 ` [patch 33/41] x86/fpu: Move FXSAVE_LEAK quirk info __copy_kernel_to_fpregs() Thomas Gleixner
2021-06-11 16:15 ` [patch 34/41] x86/fpu: Rename xfeatures_mask_user() to xfeatures_mask_uabi() Thomas Gleixner
2021-06-11 16:15 ` [patch 35/41] x86/fpu: Dont restore PKRU in fpregs_restore_userspace() Thomas Gleixner
2021-06-11 16:15 ` [patch 36/41] x86/fpu: Add PKRU storage outside of task XSAVE buffer Thomas Gleixner
2021-06-11 16:16 ` [patch 37/41] x86/fpu: Hook up PKRU into ptrace() Thomas Gleixner
2021-06-11 16:16 ` [patch 38/41] x86/fpu: Mask PKRU from kernel XRSTOR[S] operations Thomas Gleixner
2021-06-11 16:16 ` [patch 39/41] x86/fpu: Remove PKRU handling from switch_fpu_finish() Thomas Gleixner
2021-06-11 16:16 ` [patch 40/41] x86/fpu: Dont store PKRU in xstate in fpu_reset_fpstate() Thomas Gleixner
2021-06-11 16:16 ` [patch 41/41] x86/pkru: Remove xstate fiddling from write_pkru() Thomas Gleixner
2021-06-12 0:24 ` [patch 00/41] x86/fpu: Spring cleaning and PKRU sanitizing Thomas Gleixner
2021-06-12 0:40 ` Dave Hansen
2021-06-16 20:55 ` Dave Hansen
2021-06-17 7:06 ` Thomas Gleixner
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