From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Al Viro <viro@zeniv.linux.org.uk>,
Linus Torvalds <torvalds@linux-foundation.org>,
Tony Luck <tony.luck@intel.com>, Song Liu <songliubraving@fb.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Peter Ziljstra <peterz@infradead.org>
Subject: [patch V2.1 01/20] x86/extable: Tidy up redundant handler functions
Date: Tue, 7 Sep 2021 22:24:41 +0200 (CEST) [thread overview]
Message-ID: <20210907200848.297057150@linutronix.de> (raw)
In-Reply-To: 20210907200722.067068005@linutronix.de
No need to have the same code all over the place.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
V2: New patch
---
arch/x86/mm/extable.c | 16 +++++-----------
1 file changed, 5 insertions(+), 11 deletions(-)
--- a/arch/x86/mm/extable.c
+++ b/arch/x86/mm/extable.c
@@ -39,9 +39,8 @@ EXPORT_SYMBOL(ex_handler_default);
unsigned long error_code,
unsigned long fault_addr)
{
- regs->ip = ex_fixup_addr(fixup);
regs->ax = trapnr;
- return true;
+ return ex_handler_default(fixup, regs, trapnr, error_code, fault_addr);
}
EXPORT_SYMBOL_GPL(ex_handler_fault);
@@ -76,8 +75,7 @@ EXPORT_SYMBOL_GPL(ex_handler_fprestore);
unsigned long fault_addr)
{
WARN_ONCE(trapnr == X86_TRAP_GP, "General protection fault in user access. Non-canonical address?");
- regs->ip = ex_fixup_addr(fixup);
- return true;
+ return ex_handler_default(fixup, regs, trapnr, error_code, fault_addr);
}
EXPORT_SYMBOL(ex_handler_uaccess);
@@ -87,9 +85,7 @@ EXPORT_SYMBOL(ex_handler_uaccess);
unsigned long fault_addr)
{
WARN_ONCE(trapnr == X86_TRAP_GP, "General protection fault in user access. Non-canonical address?");
- regs->ip = ex_fixup_addr(fixup);
- regs->ax = trapnr;
- return true;
+ return ex_handler_fault(fixup, regs, trapnr, error_code, fault_addr);
}
EXPORT_SYMBOL(ex_handler_copy);
@@ -103,10 +99,9 @@ EXPORT_SYMBOL(ex_handler_copy);
show_stack_regs(regs);
/* Pretend that the read succeeded and returned 0. */
- regs->ip = ex_fixup_addr(fixup);
regs->ax = 0;
regs->dx = 0;
- return true;
+ return ex_handler_default(fixup, regs, trapnr, error_code, fault_addr);
}
EXPORT_SYMBOL(ex_handler_rdmsr_unsafe);
@@ -121,8 +116,7 @@ EXPORT_SYMBOL(ex_handler_rdmsr_unsafe);
show_stack_regs(regs);
/* Pretend that the write succeeded. */
- regs->ip = ex_fixup_addr(fixup);
- return true;
+ return ex_handler_default(fixup, regs, trapnr, error_code, fault_addr);
}
EXPORT_SYMBOL(ex_handler_wrmsr_unsafe);
next prev parent reply other threads:[~2021-09-07 20:24 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-07 20:24 [patch V2.1 00/20] x86/fpu: Clean up exception fixups and error handling in sigframe related code Thomas Gleixner
2021-09-07 20:24 ` Thomas Gleixner [this message]
2021-09-07 20:24 ` [patch V2.1 02/20] x86/extable: Get rid of redundant macros Thomas Gleixner
2021-09-07 20:24 ` [patch V2.1 03/20] x86/mce: Deduplicate exception handling Thomas Gleixner
2021-09-07 20:24 ` [patch V2.1 04/20] x86/mce: Get rid of stray semicolons Thomas Gleixner
2021-09-07 20:24 ` [patch V2.1 05/20] x86/extable: Rework the exception table mechanics Thomas Gleixner
2021-09-07 20:37 ` Linus Torvalds
2021-09-07 21:44 ` Thomas Gleixner
2021-09-07 20:24 ` [patch V2.1 06/20] x86/extable: Provide EX_TYPE_DEFAULT_MCE_SAFE and EX_TYPE_FAULT_MCE_SAFE Thomas Gleixner
2021-09-07 20:24 ` [patch V2.1 07/20] x86/copy_mc: Use EX_TYPE_DEFAULT_MCE_SAFE for exception fixups Thomas Gleixner
2021-09-07 20:24 ` [patch V2.1 08/20] x86/fpu: Use EX_TYPE_FAULT_MCE_SAFE " Thomas Gleixner
2021-09-07 20:24 ` [patch V2.1 09/20] x86/extable: Remove EX_TYPE_FAULT from MCE safe fixups Thomas Gleixner
2021-09-07 20:24 ` [patch V2.1 10/20] x86/fpu/signal: Clarify exception handling in restore_fpregs_from_user() Thomas Gleixner
2021-09-07 20:24 ` [patch V2.1 11/20] x86/fpu: Dont use MCE safe fixups for writing FPU state to user space Thomas Gleixner
2021-09-07 20:24 ` [patch V2.1 12/20] x86/fpu/signal: Move header zeroing out of xsave_to_user_sigframe() Thomas Gleixner
2021-09-07 20:25 ` [patch V2.1 13/20] x86/fpu/signal: Move xstate clearing out of copy_fpregs_to_sigframe() Thomas Gleixner
2021-09-07 20:25 ` [patch V2.1 14/20] x86/fpu/signal: Change return type of copy_fpstate_to_sigframe() to boolean Thomas Gleixner
2021-09-07 20:25 ` [patch V2.1 15/20] x86/fpu/signal: Change return type of copy_fpregs_to_sigframe() helpers " Thomas Gleixner
2021-09-07 20:25 ` [patch V2.1 16/20] x86/signal: Change return type of restore_sigcontext() " Thomas Gleixner
2021-09-07 20:25 ` [patch V2.1 17/20] x86/fpu/signal: Change return type of fpu__restore_sig() " Thomas Gleixner
2021-09-07 20:25 ` [patch V2.1 18/20] x86/fpu/signal: Change return type of __fpu_restore_sig() " Thomas Gleixner
2021-09-07 20:25 ` [patch V2.1 19/20] x86/fpu/signal: Change return code of check_xstate_in_sigframe() " Thomas Gleixner
2021-09-07 20:25 ` [patch V2.1 20/20] x86/fpu/signal: Change return code of restore_fpregs_from_user() " Thomas Gleixner
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