Commit 7d57511d authored by Catalin Marinas's avatar Catalin Marinas Committed by Will Deacon

arm64: Add COMPAT_HWCAP_LPAE

Commit a469abd0 (ARM: elf: add new hwcap for identifying atomic
ldrd/strd instructions) introduces HWCAP_ELF for 32-bit ARM
applications. As LPAE is always present on arm64, report the
corresponding compat HWCAP to user space.
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Cc: <stable@vger.kernel.org> # 3.11+
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent fb7332a9
...@@ -30,6 +30,7 @@ ...@@ -30,6 +30,7 @@
#define COMPAT_HWCAP_IDIVA (1 << 17) #define COMPAT_HWCAP_IDIVA (1 << 17)
#define COMPAT_HWCAP_IDIVT (1 << 18) #define COMPAT_HWCAP_IDIVT (1 << 18)
#define COMPAT_HWCAP_IDIV (COMPAT_HWCAP_IDIVA|COMPAT_HWCAP_IDIVT) #define COMPAT_HWCAP_IDIV (COMPAT_HWCAP_IDIVA|COMPAT_HWCAP_IDIVT)
#define COMPAT_HWCAP_LPAE (1 << 20)
#define COMPAT_HWCAP_EVTSTRM (1 << 21) #define COMPAT_HWCAP_EVTSTRM (1 << 21)
#define COMPAT_HWCAP2_AES (1 << 0) #define COMPAT_HWCAP2_AES (1 << 0)
......
...@@ -73,7 +73,8 @@ EXPORT_SYMBOL_GPL(elf_hwcap); ...@@ -73,7 +73,8 @@ EXPORT_SYMBOL_GPL(elf_hwcap);
COMPAT_HWCAP_FAST_MULT|COMPAT_HWCAP_EDSP|\ COMPAT_HWCAP_FAST_MULT|COMPAT_HWCAP_EDSP|\
COMPAT_HWCAP_TLS|COMPAT_HWCAP_VFP|\ COMPAT_HWCAP_TLS|COMPAT_HWCAP_VFP|\
COMPAT_HWCAP_VFPv3|COMPAT_HWCAP_VFPv4|\ COMPAT_HWCAP_VFPv3|COMPAT_HWCAP_VFPv4|\
COMPAT_HWCAP_NEON|COMPAT_HWCAP_IDIV) COMPAT_HWCAP_NEON|COMPAT_HWCAP_IDIV|\
COMPAT_HWCAP_LPAE)
unsigned int compat_elf_hwcap __read_mostly = COMPAT_ELF_HWCAP_DEFAULT; unsigned int compat_elf_hwcap __read_mostly = COMPAT_ELF_HWCAP_DEFAULT;
unsigned int compat_elf_hwcap2 __read_mostly; unsigned int compat_elf_hwcap2 __read_mostly;
#endif #endif
......
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