[10/21] x86/math-emu: Convert to fpstate

Message ID	20211013145322.711347464@linutronix.de (mailing list archive)
State	New, archived
Headers	show Return-Path: <kvm-owner@kernel.org> Message-ID: <20211013145322.711347464@linutronix.de> From: Thomas Gleixner <tglx@linutronix.de> To: LKML <linux-kernel@vger.kernel.org> Cc: x86@kernel.org, "Chang S. Bae" <chang.seok.bae@intel.com>, Dave Hansen <dave.hansen@linux.intel.com>, Arjan van de Ven <arjan@linux.intel.com>, kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com> Subject: [patch 10/21] x86/math-emu: Convert to fpstate References: <20211013142847.120153383@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Date: Wed, 13 Oct 2021 16:55:40 +0200 (CEST) Precedence: bulk
Series	x86/fpu: Move register state into a container struct (part 2) \| expand [00/21] x86/fpu: Move register state into a container struct (part 2) [01/21] x86/fpu: Provide struct fpstate [02/21] x86/fpu: Convert fpstate_init() to struct fpstate [03/21] x86/fpu: Convert restore_fpregs_from_fpstate() to struct fpstate [04/21] x86/fpu: Replace KVMs xstate component clearing [05/21] x86/KVM: Convert to fpstate [06/21] x86/fpu: Convert tracing to fpstate [07/21] x86/fpu/regset: Convert to fpstate [08/21] x86/fpu/signal: Convert to fpstate [09/21] x86/fpu/core: Convert to fpstate [10/21] x86/math-emu: Convert to fpstate [11/21] x86/fpu: Remove fpu::state [12/21] x86/fpu: Do not leak fpstate pointer on fork [13/21] x86/process: Move arch_thread_struct_whitelist() out of line [14/21] x86/fpu: Add size and mask information to fpstate [15/21] x86/fpu: Use fpstate::size [16/21] x86/fpu/xstate: Use fpstate for os_xsave() [17/21] x86/fpu/xstate: Use fpstate for xsave_to_user_sigframe() [18/21] x86/fpu: Use fpstate in fpu_copy_kvm_uabi_to_fpstate() [19/21] x86/fpu: Use fpstate in __copy_xstate_to_uabi_buf() [20/21] x86/fpu/xstate: Use fpstate for copy_uabi_to_xstate() [21/21] x86/fpu/signal: Use fpstate for size and features

Message ID

20211013145322.711347464@linutronix.de (mailing list archive)

State

New, archived

Headers

Message-ID: <20211013145322.711347464@linutronix.de>
From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, "Chang S. Bae" <chang.seok.bae@intel.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Arjan van de Ven <arjan@linux.intel.com>,
        kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>
Subject: [patch 10/21] x86/math-emu: Convert to fpstate
References: <20211013142847.120153383@linutronix.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Date: Wed, 13 Oct 2021 16:55:40 +0200 (CEST)
Precedence: bulk

Series

x86/fpu: Move register state into a container struct (part 2) | expand

Commit Message

Thomas Gleixner Oct. 13, 2021, 2:55 p.m. UTC

Convert math emulation code to the new register storage
mechanism in preparation for dynamically sized buffers.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 arch/x86/math-emu/fpu_aux.c    |    2 +-
 arch/x86/math-emu/fpu_entry.c  |    4 ++--
 arch/x86/math-emu/fpu_system.h |    2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

--- a/arch/x86/math-emu/fpu_aux.c
+++ b/arch/x86/math-emu/fpu_aux.c
@@ -53,7 +53,7 @@  void fpstate_init_soft(struct swregs_sta
 
 void finit(void)
 {
-	fpstate_init_soft(&current->thread.fpu.state.soft);
+	fpstate_init_soft(&current->thread.fpu.fpstate->regs.soft);
 }
 
 /*
--- a/arch/x86/math-emu/fpu_entry.c
+++ b/arch/x86/math-emu/fpu_entry.c
@@ -640,7 +640,7 @@  int fpregs_soft_set(struct task_struct *
 		    unsigned int pos, unsigned int count,
 		    const void *kbuf, const void __user *ubuf)
 {
-	struct swregs_state *s387 = &target->thread.fpu.state.soft;
+	struct swregs_state *s387 = &target->thread.fpu.fpstate->regs.soft;
 	void *space = s387->st_space;
 	int ret;
 	int offset, other, i, tags, regnr, tag, newtop;
@@ -691,7 +691,7 @@  int fpregs_soft_get(struct task_struct *
 		    const struct user_regset *regset,
 		    struct membuf to)
 {
-	struct swregs_state *s387 = &target->thread.fpu.state.soft;
+	struct swregs_state *s387 = &target->thread.fpu.fpstate->regs.soft;
 	const void *space = s387->st_space;
 	int offset = (S387->ftop & 7) * 10, other = 80 - offset;
 
--- a/arch/x86/math-emu/fpu_system.h
+++ b/arch/x86/math-emu/fpu_system.h
@@ -73,7 +73,7 @@  static inline bool seg_writable(struct d
 	return (d->type & SEG_TYPE_EXECUTE_MASK) == SEG_TYPE_WRITABLE;
 }
 
-#define I387			(&current->thread.fpu.state)
+#define I387			(&current->thread.fpu.fpstate->regs)
 #define FPU_info		(I387->soft.info)
 
 #define FPU_CS			(*(unsigned short *) &(FPU_info->regs->cs))

[10/21] x86/math-emu: Convert to fpstate

Commit Message

Patch