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Date: Thu, 13 Feb 2014 02:44:52 +0000 From: "Zheng, Lv" <lv.zheng@...el.com> To: "Wysocki, Rafael J" <rafael.j.wysocki@...el.com>, "Brown, Len" <len.brown@...el.com> CC: Lv Zheng <zetalog@...il.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>, "Luck, Tony" <tony.luck@...el.com>, "Yu, Fenghua" <fenghua.yu@...el.com> Subject: RE: [PATCH 2/2] ACPICA: acpidump: Remove translation protection on integer types. Hi, Tony and Fenghua I need your opinions on this patch? Will it affect the functionality of IA64 kernel behavior? Can you help to confirm? Thanks in advance. Best regards -Lv > -----Original Message----- > From: Zheng, Lv > Sent: Tuesday, February 11, 2014 10:52 AM > To: Wysocki, Rafael J; Brown, Len > Cc: Zheng, Lv; Lv Zheng; linux-kernel@...r.kernel.org; linux-acpi@...r.kernel.org; Luck, Tony; Yu, Fenghua > Subject: [PATCH 2/2] ACPICA: acpidump: Remove translation protection on integer types. > > Remove translation protection for applications as Linux tools folder will > start to use such types. > > In Linux kernel source tree, after removing this translation protection, > the u8/u16/u32/u64/s32/s64 typedefs are exposed for both __KERNEL__ builds > and !__KERNEL__ builds (tools/power/acpi) and the original definitions of > ACPI_UINT8/16/32/64_MAX are changed. > > For !__KERNEL__ builds, this kind of defintions should already been tested > by the distribution vendors that are distributing binary ACPICA package and > we've achieved the successful built/run test result in the kernel source > tree. > > For __KERNEL__ builds, there are 2 things affected: > 1. u8/u16/u32/u64/s32/s64 type definitions: > Since Linux has already type defined u8/u16/u32/u64/s32/s64 in > include/uapi/asm-generic/int-ll64.h for __KERNEL__. In order not to > introduce build regressions where the 2 typedefs are differed, > ACPI_USE_SYSTEM_INTTYPES is introduced to mask out ACPICA's typedefs. > It must be defined for Linux __KERNEL__ builds. > 2. ACPI_UINT8/16/32/64_MAX definitions: > Before applying this change: > ACPI_UINT8_MAX: sizeof (UINT8) > UINT8: unsigned char > ACPI_UINT16_MAX: sizeof (UINT16) > UINT16: unsigned short > ACPI_UINT32_MAX: sizeof (UINT32) > INT32: int > UINT32: unsigned int > ACPI_UINT64_MAX: sizeof (UINT64) > INT64: COMPILER_DEPENDENT_INT64 > COMPILER_DEPENDENT_INT64: signed long (IA64) or > signed long long (IA32) > UINT64: COMPILER_DEPENDENT_UINT64 > COMPILER_DEPENDENT_UINT64: unsigned long (IA64) or > unsigned long long (IA32) > After applying this change: > ACPI_UINT8_MAX: sizeof (u8) > u8: unsigned char > UINT8: (removed from actypes.h) > ACPI_UINT16_MAX: sizeof (u16) > u16: unsigned short > UINT16: (removed from actypes.h) > ACPI_UINT32_MAX: sizeof (u32) > INT32/UINT32: (removed from actypes.h) > s32: signed int > u32: unsigned int > ACPI_UINT64_MAX: sizeof (u64) > INT64/UINT64: (removed from actypes.h) > u64: unsigned long long > s64: signed long long > COMPILER_DEPENDENT_INT64: signed long (IA64) (not used any more) > signed long long (IA32) (not used any more) > COMPILER_DEPENDENT_UINT64: unsigned long (IA64) (not used any more) > unsigned long long (IA32) (not used any more) > All definitions are equal except ACPI_UINT64_MAX for CONFIG_IA64. It > is changed from sizeof(unsigned long) to sizeof(unsigned long long). > By investigation, 64bit Linux kernel build is LP64 compliant, i.e., > sizeof(long) and (pointer) are 64. As sizeof(unsigned long) equals to > sizeof(unsigned long long) on IA64 platform where CONFIG_64BIT cannot be > disabled, this change actually will not affect the value of > ACPI_UINT64_MAX on IA64 platforms. > > This patch is generated as linuxized acpidump is failed to be compiled due > to lacking in u8/u16/u32/u64/s32/s64 definitions. Lv Zheng. > > Signed-off-by: Lv Zheng <lv.zheng@...el.com> > Cc: Tony Luck <tony.luck@...el.com> > Cc: Fenghua Yu <fenghua.yu@...el.com> > --- > include/acpi/actypes.h | 64 +++++++++++++++++++-------------------- > include/acpi/platform/aclinux.h | 2 ++ > 2 files changed, 34 insertions(+), 32 deletions(-) > > diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h > index 68a3ada..86e9f13 100644 > --- a/include/acpi/actypes.h > +++ b/include/acpi/actypes.h > @@ -55,18 +55,16 @@ > #error ACPI_MACHINE_WIDTH not defined > #endif > > -/*! [Begin] no source code translation */ > - > /* > * Data type ranges > * Note: These macros are designed to be compiler independent as well as > * working around problems that some 32-bit compilers have with 64-bit > * constants. > */ > -#define ACPI_UINT8_MAX (UINT8) (~((UINT8) 0)) /* 0xFF */ > -#define ACPI_UINT16_MAX (UINT16)(~((UINT16) 0)) /* 0xFFFF */ > -#define ACPI_UINT32_MAX (UINT32)(~((UINT32) 0)) /* 0xFFFFFFFF */ > -#define ACPI_UINT64_MAX (UINT64)(~((UINT64) 0)) /* 0xFFFFFFFFFFFFFFFF */ > +#define ACPI_UINT8_MAX (u8) (~((u8) 0)) /* 0xFF */ > +#define ACPI_UINT16_MAX (u16)(~((u16) 0)) /* 0xFFFF */ > +#define ACPI_UINT32_MAX (u32)(~((u32) 0)) /* 0xFFFFFFFF */ > +#define ACPI_UINT64_MAX (u64)(~((u64) 0)) /* 0xFFFFFFFFFFFFFFFF */ > #define ACPI_ASCII_MAX 0x7F > > /* > @@ -77,18 +75,18 @@ > * > * 1) The following types are of fixed size for all targets (16/32/64): > * > - * BOOLEAN Logical boolean > + * u8 Logical boolean > * > - * UINT8 8-bit (1 byte) unsigned value > - * UINT16 16-bit (2 byte) unsigned value > - * UINT32 32-bit (4 byte) unsigned value > - * UINT64 64-bit (8 byte) unsigned value > + * u8 8-bit (1 byte) unsigned value > + * u16 16-bit (2 byte) unsigned value > + * u32 32-bit (4 byte) unsigned value > + * u64 64-bit (8 byte) unsigned value > * > - * INT16 16-bit (2 byte) signed value > - * INT32 32-bit (4 byte) signed value > - * INT64 64-bit (8 byte) signed value > + * s16 16-bit (2 byte) signed value > + * s32 32-bit (4 byte) signed value > + * s64 64-bit (8 byte) signed value > * > - * COMPILER_DEPENDENT_UINT64/INT64 - These types are defined in the > + * COMPILER_DEPENDENT_UINT64/s64 - These types are defined in the > * compiler-dependent header(s) and were introduced because there is no common > * 64-bit integer type across the various compilation models, as shown in > * the table below. > @@ -110,11 +108,11 @@ > * usually used for memory allocation, efficient loop counters, and array > * indexes. The types are similar to the size_t type in the C library and are > * required because there is no C type that consistently represents the native > - * data width. ACPI_SIZE is needed because there is no guarantee that a > + * data width. acpi_size is needed because there is no guarantee that a > * kernel-level C library is present. > * > - * ACPI_SIZE 16/32/64-bit unsigned value > - * ACPI_NATIVE_INT 16/32/64-bit signed value > + * acpi_size 16/32/64-bit unsigned value > + * acpi_native_int 16/32/64-bit signed value > */ > > /******************************************************************************* > @@ -123,13 +121,15 @@ > * > ******************************************************************************/ > > -typedef unsigned char BOOLEAN; > -typedef unsigned char UINT8; > -typedef unsigned short UINT16; > -typedef COMPILER_DEPENDENT_UINT64 UINT64; > -typedef COMPILER_DEPENDENT_INT64 INT64; > +#ifndef ACPI_USE_SYSTEM_INTTYPES > + > +typedef unsigned char u8; > +typedef unsigned char u8; > +typedef unsigned short u16; > +typedef COMPILER_DEPENDENT_UINT64 u64; > +typedef COMPILER_DEPENDENT_INT64 s64; > > -/*! [End] no source code translation !*/ > +#endif /* ACPI_USE_SYSTEM_INTTYPES */ > > /* > * Value returned by acpi_os_get_thread_id. There is no standard "thread_id" > @@ -149,12 +149,12 @@ typedef COMPILER_DEPENDENT_INT64 INT64; > > #if ACPI_MACHINE_WIDTH == 64 > > -/*! [Begin] no source code translation (keep the typedefs as-is) */ > +#ifndef ACPI_USE_SYSTEM_INTTYPES > > -typedef unsigned int UINT32; > -typedef int INT32; > +typedef unsigned int u32; > +typedef int s32; > > -/*! [End] no source code translation !*/ > +#endif /* ACPI_USE_SYSTEM_INTTYPES */ > > typedef s64 acpi_native_int; > > @@ -188,12 +188,12 @@ typedef u64 acpi_physical_address; > > #elif ACPI_MACHINE_WIDTH == 32 > > -/*! [Begin] no source code translation (keep the typedefs as-is) */ > +#ifndef ACPI_USE_SYSTEM_INTTYPES > > -typedef unsigned int UINT32; > -typedef int INT32; > +typedef unsigned int u32; > +typedef int s32; > > -/*! [End] no source code translation !*/ > +#endif /* ACPI_USE_SYSTEM_INTTYPES */ > > typedef s32 acpi_native_int; > > diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h > index f41f59b..a24c8f0 100644 > --- a/include/acpi/platform/aclinux.h > +++ b/include/acpi/platform/aclinux.h > @@ -58,6 +58,8 @@ > #define ACPI_REDUCED_HARDWARE 1 > #endif > > +#define ACPI_USE_SYSTEM_INTTYPES > + > #include <linux/string.h> > #include <linux/kernel.h> > #include <linux/ctype.h> > -- > 1.7.10 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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