Searched hist:"4591766 f" (Results 1 – 7 of 7) sorted by relevance
/openbmc/linux/arch/x86/include/asm/ |
H A D | proto.h | 4591766f Mon Dec 04 02:31:39 CST 2023 Thomas Gleixner <tglx@linutronix.de> x86/entry: Convert INT 0x80 emulation to IDTENTRY
[ upstream commit be5341eb0d43b1e754799498bd2e8756cc167a41 ]
There is no real reason to have a separate ASM entry point implementation for the legacy INT 0x80 syscall emulation on 64-bit.
IDTENTRY provides all the functionality needed with the only difference that it does not:
- save the syscall number (AX) into pt_regs::orig_ax - set pt_regs::ax to -ENOSYS
Both can be done safely in the C code of an IDTENTRY before invoking any of the syscall related functions which depend on this convention.
Aside of ASM code reduction this prepares for detecting and handling a local APIC injected vector 0x80.
[ kirill.shutemov: More verbose comments ] Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: <stable@vger.kernel.org> # v6.0+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H A D | idtentry.h | 4591766f Mon Dec 04 02:31:39 CST 2023 Thomas Gleixner <tglx@linutronix.de> x86/entry: Convert INT 0x80 emulation to IDTENTRY
[ upstream commit be5341eb0d43b1e754799498bd2e8756cc167a41 ]
There is no real reason to have a separate ASM entry point implementation for the legacy INT 0x80 syscall emulation on 64-bit.
IDTENTRY provides all the functionality needed with the only difference that it does not:
- save the syscall number (AX) into pt_regs::orig_ax - set pt_regs::ax to -ENOSYS
Both can be done safely in the C code of an IDTENTRY before invoking any of the syscall related functions which depend on this convention.
Aside of ASM code reduction this prepares for detecting and handling a local APIC injected vector 0x80.
[ kirill.shutemov: More verbose comments ] Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: <stable@vger.kernel.org> # v6.0+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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/openbmc/linux/arch/x86/xen/ |
H A D | xen-asm.S | 4591766f Mon Dec 04 02:31:39 CST 2023 Thomas Gleixner <tglx@linutronix.de> x86/entry: Convert INT 0x80 emulation to IDTENTRY
[ upstream commit be5341eb0d43b1e754799498bd2e8756cc167a41 ]
There is no real reason to have a separate ASM entry point implementation for the legacy INT 0x80 syscall emulation on 64-bit.
IDTENTRY provides all the functionality needed with the only difference that it does not:
- save the syscall number (AX) into pt_regs::orig_ax - set pt_regs::ax to -ENOSYS
Both can be done safely in the C code of an IDTENTRY before invoking any of the syscall related functions which depend on this convention.
Aside of ASM code reduction this prepares for detecting and handling a local APIC injected vector 0x80.
[ kirill.shutemov: More verbose comments ] Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: <stable@vger.kernel.org> # v6.0+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H A D | enlighten_pv.c | 4591766f Mon Dec 04 02:31:39 CST 2023 Thomas Gleixner <tglx@linutronix.de> x86/entry: Convert INT 0x80 emulation to IDTENTRY
[ upstream commit be5341eb0d43b1e754799498bd2e8756cc167a41 ]
There is no real reason to have a separate ASM entry point implementation for the legacy INT 0x80 syscall emulation on 64-bit.
IDTENTRY provides all the functionality needed with the only difference that it does not:
- save the syscall number (AX) into pt_regs::orig_ax - set pt_regs::ax to -ENOSYS
Both can be done safely in the C code of an IDTENTRY before invoking any of the syscall related functions which depend on this convention.
Aside of ASM code reduction this prepares for detecting and handling a local APIC injected vector 0x80.
[ kirill.shutemov: More verbose comments ] Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: <stable@vger.kernel.org> # v6.0+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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/openbmc/linux/arch/x86/kernel/ |
H A D | idt.c | 4591766f Mon Dec 04 02:31:39 CST 2023 Thomas Gleixner <tglx@linutronix.de> x86/entry: Convert INT 0x80 emulation to IDTENTRY
[ upstream commit be5341eb0d43b1e754799498bd2e8756cc167a41 ]
There is no real reason to have a separate ASM entry point implementation for the legacy INT 0x80 syscall emulation on 64-bit.
IDTENTRY provides all the functionality needed with the only difference that it does not:
- save the syscall number (AX) into pt_regs::orig_ax - set pt_regs::ax to -ENOSYS
Both can be done safely in the C code of an IDTENTRY before invoking any of the syscall related functions which depend on this convention.
Aside of ASM code reduction this prepares for detecting and handling a local APIC injected vector 0x80.
[ kirill.shutemov: More verbose comments ] Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: <stable@vger.kernel.org> # v6.0+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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/openbmc/linux/arch/x86/entry/ |
H A D | common.c | 4591766f Mon Dec 04 02:31:39 CST 2023 Thomas Gleixner <tglx@linutronix.de> x86/entry: Convert INT 0x80 emulation to IDTENTRY
[ upstream commit be5341eb0d43b1e754799498bd2e8756cc167a41 ]
There is no real reason to have a separate ASM entry point implementation for the legacy INT 0x80 syscall emulation on 64-bit.
IDTENTRY provides all the functionality needed with the only difference that it does not:
- save the syscall number (AX) into pt_regs::orig_ax - set pt_regs::ax to -ENOSYS
Both can be done safely in the C code of an IDTENTRY before invoking any of the syscall related functions which depend on this convention.
Aside of ASM code reduction this prepares for detecting and handling a local APIC injected vector 0x80.
[ kirill.shutemov: More verbose comments ] Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: <stable@vger.kernel.org> # v6.0+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H A D | entry_64_compat.S | 4591766f Mon Dec 04 02:31:39 CST 2023 Thomas Gleixner <tglx@linutronix.de> x86/entry: Convert INT 0x80 emulation to IDTENTRY
[ upstream commit be5341eb0d43b1e754799498bd2e8756cc167a41 ]
There is no real reason to have a separate ASM entry point implementation for the legacy INT 0x80 syscall emulation on 64-bit.
IDTENTRY provides all the functionality needed with the only difference that it does not:
- save the syscall number (AX) into pt_regs::orig_ax - set pt_regs::ax to -ENOSYS
Both can be done safely in the C code of an IDTENTRY before invoking any of the syscall related functions which depend on this convention.
Aside of ASM code reduction this prepares for detecting and handling a local APIC injected vector 0x80.
[ kirill.shutemov: More verbose comments ] Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: <stable@vger.kernel.org> # v6.0+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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