* [PATCH v2 0/2] arm64: introduce run-time detection of aarch32 support @ 2015-09-02 14:00 Yury Norov 2015-09-02 14:00 ` [PATCH v2 1/2] arm64: cpufeature.h: resolve hidden header dependencies Yury Norov 2015-09-02 14:00 ` [PATCH v2 2/2] arm64: don't load 32-bit binaries if platform has no aarch32_el0 Yury Norov 0 siblings, 2 replies; 6+ messages in thread From: Yury Norov @ 2015-09-02 14:00 UTC (permalink / raw) To: linux-arm-kernel This is needed to avoid loading aarch32 binaries if COMPAT is enabled, but aarch32 is not supported by specific platform. First patch fixes hidden header dependencies in arch/arm64/include/asm/cpufeature.h. It's not related to the issue, but helps to avoid build failure that happens if one applies second patch only. Second patch adds run-time detection of aarch32 support, and rejects kernel to load such binaries, if not supported. Tested on ThunderX. V2: - add missing <linux/compiler.h> for the __attribute_const__ on cpuid_feature_extract_field; - move cpu_feature macro under the __ASSEMBLY__ guard. - check that all CPUs support AArch32, not the current only, the same way as for endianness support. Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> Yury Norov (2): arm64: cpufeature.h: resolve hidden header dependencies arm64: don't load 32-bit binaries if platform has no aarch32_el0 arch/arm64/include/asm/cpufeature.h | 10 +++++++++- arch/arm64/include/asm/cputype.h | 8 ++++++++ arch/arm64/include/asm/elf.h | 6 ++++-- arch/arm64/kernel/cpuinfo.c | 12 ++++++++++++ 4 files changed, 33 insertions(+), 3 deletions(-) -- 2.1.4 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v2 1/2] arm64: cpufeature.h: resolve hidden header dependencies 2015-09-02 14:00 [PATCH v2 0/2] arm64: introduce run-time detection of aarch32 support Yury Norov @ 2015-09-02 14:00 ` Yury Norov 2015-09-02 14:23 ` Mark Rutland 2015-09-02 14:00 ` [PATCH v2 2/2] arm64: don't load 32-bit binaries if platform has no aarch32_el0 Yury Norov 1 sibling, 1 reply; 6+ messages in thread From: Yury Norov @ 2015-09-02 14:00 UTC (permalink / raw) To: linux-arm-kernel Functions implemented in cpufeature.h depend on some headers, but cpufeature.h does not include them. This may cause build failure if cpufeature.h user does not include that headers by itself. (Like it happens in next patch of this series.) Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> --- arch/arm64/include/asm/cpufeature.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index c104421..f0e4017 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -19,7 +19,6 @@ */ #define MAX_CPU_FEATURES (8 * sizeof(elf_hwcap)) -#define cpu_feature(x) ilog2(HWCAP_ ## x) #define ARM64_WORKAROUND_CLEAN_CACHE 0 #define ARM64_WORKAROUND_DEVICE_LOAD_ACQUIRE 1 @@ -30,6 +29,14 @@ #ifndef __ASSEMBLY__ +#include <linux/bitmap.h> +#include <linux/compiler.h> +#include <linux/log2.h> +#include <linux/printk.h> +#include <linux/types.h> + +#define cpu_feature(x) ilog2(HWCAP_ ## x) + struct arm64_cpu_capabilities { const char *desc; u16 capability; -- 2.1.4 ^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v2 1/2] arm64: cpufeature.h: resolve hidden header dependencies 2015-09-02 14:00 ` [PATCH v2 1/2] arm64: cpufeature.h: resolve hidden header dependencies Yury Norov @ 2015-09-02 14:23 ` Mark Rutland 0 siblings, 0 replies; 6+ messages in thread From: Mark Rutland @ 2015-09-02 14:23 UTC (permalink / raw) To: linux-arm-kernel On Wed, Sep 02, 2015 at 03:00:37PM +0100, Yury Norov wrote: > Functions implemented in cpufeature.h depend on some headers, but > cpufeature.h does not include them. This may cause build failure if > cpufeature.h user does not include that headers by itself. (Like it > happens in next patch of this series.) > > Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> It would be worth mentioning that the cpu_feature() macro was moved as it depends on the include of <linux/log2.h> for ilog2(). Otherwise this looks like a sensible cleanup/fix to me: Reviewed-by: Mark Rutland <mark.rutland@arm.com> Mark. > --- > arch/arm64/include/asm/cpufeature.h | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h > index c104421..f0e4017 100644 > --- a/arch/arm64/include/asm/cpufeature.h > +++ b/arch/arm64/include/asm/cpufeature.h > @@ -19,7 +19,6 @@ > */ > > #define MAX_CPU_FEATURES (8 * sizeof(elf_hwcap)) > -#define cpu_feature(x) ilog2(HWCAP_ ## x) > > #define ARM64_WORKAROUND_CLEAN_CACHE 0 > #define ARM64_WORKAROUND_DEVICE_LOAD_ACQUIRE 1 > @@ -30,6 +29,14 @@ > > #ifndef __ASSEMBLY__ > > +#include <linux/bitmap.h> > +#include <linux/compiler.h> > +#include <linux/log2.h> > +#include <linux/printk.h> > +#include <linux/types.h> > + > +#define cpu_feature(x) ilog2(HWCAP_ ## x) > + > struct arm64_cpu_capabilities { > const char *desc; > u16 capability; > -- > 2.1.4 > ^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v2 2/2] arm64: don't load 32-bit binaries if platform has no aarch32_el0 2015-09-02 14:00 [PATCH v2 0/2] arm64: introduce run-time detection of aarch32 support Yury Norov 2015-09-02 14:00 ` [PATCH v2 1/2] arm64: cpufeature.h: resolve hidden header dependencies Yury Norov @ 2015-09-02 14:00 ` Yury Norov 2015-09-02 14:15 ` Ard Biesheuvel 1 sibling, 1 reply; 6+ messages in thread From: Yury Norov @ 2015-09-02 14:00 UTC (permalink / raw) To: linux-arm-kernel Kernel option COMPAT defines the ability of executing aarch32 binaries. Some platforms does not support aarch32 mode, and so cannot execute that binaries. But we cannot just disable COMPAT for them because the same kernel binary may be used by multiple platforms. In this patch, system_supports_aarch32_el0() is introduced to detect aarch32 support at run-time. Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> --- arch/arm64/include/asm/cpufeature.h | 1 + arch/arm64/include/asm/cputype.h | 8 ++++++++ arch/arm64/include/asm/elf.h | 6 ++++-- arch/arm64/kernel/cpuinfo.c | 12 ++++++++++++ 4 files changed, 25 insertions(+), 2 deletions(-) diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index f0e4017..35f2654 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -83,6 +83,7 @@ void check_local_cpu_errata(void); void check_local_cpu_features(void); bool cpu_supports_mixed_endian_el0(void); bool system_supports_mixed_endian_el0(void); +bool system_supports_aarch32_el0(void); #endif /* __ASSEMBLY__ */ diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h index a84ec60..a24e42c 100644 --- a/arch/arm64/include/asm/cputype.h +++ b/arch/arm64/include/asm/cputype.h @@ -81,6 +81,9 @@ #define ID_AA64MMFR0_BIGEND(mmfr0) \ (((mmfr0) & ID_AA64MMFR0_BIGEND_MASK) >> ID_AA64MMFR0_BIGEND_SHIFT) +#define ID_AA64PFR0_EL0_64 1 +#define ID_AA64PFR0_EL0_6432 2 + #define SCTLR_EL1_CP15BEN (0x1 << 5) #define SCTLR_EL1_SED (0x1 << 8) @@ -116,6 +119,11 @@ static inline u32 __attribute_const__ read_cpuid_cachetype(void) return read_cpuid(CTR_EL0); } +static inline bool id_aa64pfr0_aarch32_el0(u64 pfr0) +{ + return pfr0 == ID_AA64PFR0_EL0_6432; +} + static inline bool id_aa64mmfr0_mixed_endian_el0(u64 mmfr0) { return (ID_AA64MMFR0_BIGEND(mmfr0) == 0x1) || diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h index faad6df..461897b 100644 --- a/arch/arm64/include/asm/elf.h +++ b/arch/arm64/include/asm/elf.h @@ -21,6 +21,7 @@ /* * ELF register definitions.. */ +#include <asm/cpufeature.h> #include <asm/ptrace.h> #include <asm/user.h> @@ -173,8 +174,9 @@ typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG]; /* AArch32 EABI. */ #define EF_ARM_EABI_MASK 0xff000000 -#define compat_elf_check_arch(x) (((x)->e_machine == EM_ARM) && \ - ((x)->e_flags & EF_ARM_EABI_MASK)) +#define compat_elf_check_arch(x) (system_supports_aarch32_el0() \ + && ((x)->e_machine == EM_ARM) \ + && ((x)->e_flags & EF_ARM_EABI_MASK)) #define compat_start_thread compat_start_thread #define COMPAT_SET_PERSONALITY(ex) set_thread_flag(TIF_32BIT); diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c index 75d5a86..4a6ae31 100644 --- a/arch/arm64/kernel/cpuinfo.c +++ b/arch/arm64/kernel/cpuinfo.c @@ -36,6 +36,7 @@ DEFINE_PER_CPU(struct cpuinfo_arm64, cpu_data); static struct cpuinfo_arm64 boot_cpu_data; static bool mixed_endian_el0 = true; +static bool aarch32_el0 = true; static char *icache_policy_str[] = { [ICACHE_POLICY_RESERVED] = "RESERVED/UNKNOWN", @@ -79,13 +80,24 @@ bool system_supports_mixed_endian_el0(void) return mixed_endian_el0; } +bool system_supports_aarch32_el0(void) +{ + return aarch32_el0; +} + static void update_mixed_endian_el0_support(struct cpuinfo_arm64 *info) { mixed_endian_el0 &= id_aa64mmfr0_mixed_endian_el0(info->reg_id_aa64mmfr0); } +static void update_aarch32_el0_support(struct cpuinfo_arm64 *info) +{ + aarch32_el0 &= id_aa64pfr0_aarch32_el0(info->reg_id_aa64pfr0); +} + static void update_cpu_features(struct cpuinfo_arm64 *info) { + update_aarch32_el0_support(info); update_mixed_endian_el0_support(info); } -- 2.1.4 ^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v2 2/2] arm64: don't load 32-bit binaries if platform has no aarch32_el0 2015-09-02 14:00 ` [PATCH v2 2/2] arm64: don't load 32-bit binaries if platform has no aarch32_el0 Yury Norov @ 2015-09-02 14:15 ` Ard Biesheuvel 2015-09-02 14:38 ` Yury Norov 0 siblings, 1 reply; 6+ messages in thread From: Ard Biesheuvel @ 2015-09-02 14:15 UTC (permalink / raw) To: linux-arm-kernel On 2 September 2015 at 16:00, Yury Norov <ynorov@caviumnetworks.com> wrote: > Kernel option COMPAT defines the ability of executing aarch32 binaries. > Some platforms does not support aarch32 mode, and so cannot execute that > binaries. But we cannot just disable COMPAT for them because the same > kernel binary may be used by multiple platforms. > > In this patch, system_supports_aarch32_el0() is introduced to detect > aarch32 support at run-time. > > Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> > --- > arch/arm64/include/asm/cpufeature.h | 1 + > arch/arm64/include/asm/cputype.h | 8 ++++++++ > arch/arm64/include/asm/elf.h | 6 ++++-- > arch/arm64/kernel/cpuinfo.c | 12 ++++++++++++ > 4 files changed, 25 insertions(+), 2 deletions(-) > > diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h > index f0e4017..35f2654 100644 > --- a/arch/arm64/include/asm/cpufeature.h > +++ b/arch/arm64/include/asm/cpufeature.h > @@ -83,6 +83,7 @@ void check_local_cpu_errata(void); > void check_local_cpu_features(void); > bool cpu_supports_mixed_endian_el0(void); > bool system_supports_mixed_endian_el0(void); > +bool system_supports_aarch32_el0(void); > > #endif /* __ASSEMBLY__ */ > > diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h > index a84ec60..a24e42c 100644 > --- a/arch/arm64/include/asm/cputype.h > +++ b/arch/arm64/include/asm/cputype.h > @@ -81,6 +81,9 @@ > #define ID_AA64MMFR0_BIGEND(mmfr0) \ > (((mmfr0) & ID_AA64MMFR0_BIGEND_MASK) >> ID_AA64MMFR0_BIGEND_SHIFT) > > +#define ID_AA64PFR0_EL0_64 1 > +#define ID_AA64PFR0_EL0_6432 2 > + > #define SCTLR_EL1_CP15BEN (0x1 << 5) > #define SCTLR_EL1_SED (0x1 << 8) > > @@ -116,6 +119,11 @@ static inline u32 __attribute_const__ read_cpuid_cachetype(void) > return read_cpuid(CTR_EL0); > } > > +static inline bool id_aa64pfr0_aarch32_el0(u64 pfr0) > +{ > + return pfr0 == ID_AA64PFR0_EL0_6432; > +} > + Shouldn't you be masking some bits in pfr0 before doing the comparison? ID_AA64PFR0_EL1.EL0 occupies bits [3:0] only. > static inline bool id_aa64mmfr0_mixed_endian_el0(u64 mmfr0) > { > return (ID_AA64MMFR0_BIGEND(mmfr0) == 0x1) || > diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h > index faad6df..461897b 100644 > --- a/arch/arm64/include/asm/elf.h > +++ b/arch/arm64/include/asm/elf.h > @@ -21,6 +21,7 @@ > /* > * ELF register definitions.. > */ > +#include <asm/cpufeature.h> > #include <asm/ptrace.h> > #include <asm/user.h> > > @@ -173,8 +174,9 @@ typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG]; > > /* AArch32 EABI. */ > #define EF_ARM_EABI_MASK 0xff000000 > -#define compat_elf_check_arch(x) (((x)->e_machine == EM_ARM) && \ > - ((x)->e_flags & EF_ARM_EABI_MASK)) > +#define compat_elf_check_arch(x) (system_supports_aarch32_el0() \ > + && ((x)->e_machine == EM_ARM) \ > + && ((x)->e_flags & EF_ARM_EABI_MASK)) > > #define compat_start_thread compat_start_thread > #define COMPAT_SET_PERSONALITY(ex) set_thread_flag(TIF_32BIT); > diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c > index 75d5a86..4a6ae31 100644 > --- a/arch/arm64/kernel/cpuinfo.c > +++ b/arch/arm64/kernel/cpuinfo.c > @@ -36,6 +36,7 @@ > DEFINE_PER_CPU(struct cpuinfo_arm64, cpu_data); > static struct cpuinfo_arm64 boot_cpu_data; > static bool mixed_endian_el0 = true; > +static bool aarch32_el0 = true; > > static char *icache_policy_str[] = { > [ICACHE_POLICY_RESERVED] = "RESERVED/UNKNOWN", > @@ -79,13 +80,24 @@ bool system_supports_mixed_endian_el0(void) > return mixed_endian_el0; > } > > +bool system_supports_aarch32_el0(void) > +{ > + return aarch32_el0; > +} > + > static void update_mixed_endian_el0_support(struct cpuinfo_arm64 *info) > { > mixed_endian_el0 &= id_aa64mmfr0_mixed_endian_el0(info->reg_id_aa64mmfr0); > } > > +static void update_aarch32_el0_support(struct cpuinfo_arm64 *info) > +{ > + aarch32_el0 &= id_aa64pfr0_aarch32_el0(info->reg_id_aa64pfr0); > +} > + > static void update_cpu_features(struct cpuinfo_arm64 *info) > { > + update_aarch32_el0_support(info); > update_mixed_endian_el0_support(info); > } > > -- > 2.1.4 > ^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v2 2/2] arm64: don't load 32-bit binaries if platform has no aarch32_el0 2015-09-02 14:15 ` Ard Biesheuvel @ 2015-09-02 14:38 ` Yury Norov 0 siblings, 0 replies; 6+ messages in thread From: Yury Norov @ 2015-09-02 14:38 UTC (permalink / raw) To: linux-arm-kernel On Wed, Sep 02, 2015 at 04:15:52PM +0200, Ard Biesheuvel wrote: > On 2 September 2015 at 16:00, Yury Norov <ynorov@caviumnetworks.com> wrote: > > Kernel option COMPAT defines the ability of executing aarch32 binaries. > > Some platforms does not support aarch32 mode, and so cannot execute that > > binaries. But we cannot just disable COMPAT for them because the same > > kernel binary may be used by multiple platforms. > > > > In this patch, system_supports_aarch32_el0() is introduced to detect > > aarch32 support at run-time. > > > > Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> > > --- > > arch/arm64/include/asm/cpufeature.h | 1 + > > arch/arm64/include/asm/cputype.h | 8 ++++++++ > > arch/arm64/include/asm/elf.h | 6 ++++-- > > arch/arm64/kernel/cpuinfo.c | 12 ++++++++++++ > > 4 files changed, 25 insertions(+), 2 deletions(-) > > > > diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h > > index f0e4017..35f2654 100644 > > --- a/arch/arm64/include/asm/cpufeature.h > > +++ b/arch/arm64/include/asm/cpufeature.h > > @@ -83,6 +83,7 @@ void check_local_cpu_errata(void); > > void check_local_cpu_features(void); > > bool cpu_supports_mixed_endian_el0(void); > > bool system_supports_mixed_endian_el0(void); > > +bool system_supports_aarch32_el0(void); > > > > #endif /* __ASSEMBLY__ */ > > > > diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h > > index a84ec60..a24e42c 100644 > > --- a/arch/arm64/include/asm/cputype.h > > +++ b/arch/arm64/include/asm/cputype.h > > @@ -81,6 +81,9 @@ > > #define ID_AA64MMFR0_BIGEND(mmfr0) \ > > (((mmfr0) & ID_AA64MMFR0_BIGEND_MASK) >> ID_AA64MMFR0_BIGEND_SHIFT) > > > > +#define ID_AA64PFR0_EL0_64 1 > > +#define ID_AA64PFR0_EL0_6432 2 > > + > > #define SCTLR_EL1_CP15BEN (0x1 << 5) > > #define SCTLR_EL1_SED (0x1 << 8) > > > > @@ -116,6 +119,11 @@ static inline u32 __attribute_const__ read_cpuid_cachetype(void) > > return read_cpuid(CTR_EL0); > > } > > > > +static inline bool id_aa64pfr0_aarch32_el0(u64 pfr0) > > +{ > > + return pfr0 == ID_AA64PFR0_EL0_6432; > > +} > > + > > Shouldn't you be masking some bits in pfr0 before doing the comparison? > ID_AA64PFR0_EL1.EL0 occupies bits [3:0] only. > Yes, it was in v1 but I lost in v2. > > static inline bool id_aa64mmfr0_mixed_endian_el0(u64 mmfr0) > > { > > return (ID_AA64MMFR0_BIGEND(mmfr0) == 0x1) || > > diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h > > index faad6df..461897b 100644 > > --- a/arch/arm64/include/asm/elf.h > > +++ b/arch/arm64/include/asm/elf.h > > @@ -21,6 +21,7 @@ > > /* > > * ELF register definitions.. > > */ > > +#include <asm/cpufeature.h> > > #include <asm/ptrace.h> > > #include <asm/user.h> > > > > @@ -173,8 +174,9 @@ typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG]; > > > > /* AArch32 EABI. */ > > #define EF_ARM_EABI_MASK 0xff000000 > > -#define compat_elf_check_arch(x) (((x)->e_machine == EM_ARM) && \ > > - ((x)->e_flags & EF_ARM_EABI_MASK)) > > +#define compat_elf_check_arch(x) (system_supports_aarch32_el0() \ > > + && ((x)->e_machine == EM_ARM) \ > > + && ((x)->e_flags & EF_ARM_EABI_MASK)) > > > > #define compat_start_thread compat_start_thread > > #define COMPAT_SET_PERSONALITY(ex) set_thread_flag(TIF_32BIT); > > diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c > > index 75d5a86..4a6ae31 100644 > > --- a/arch/arm64/kernel/cpuinfo.c > > +++ b/arch/arm64/kernel/cpuinfo.c > > @@ -36,6 +36,7 @@ > > DEFINE_PER_CPU(struct cpuinfo_arm64, cpu_data); > > static struct cpuinfo_arm64 boot_cpu_data; > > static bool mixed_endian_el0 = true; > > +static bool aarch32_el0 = true; > > > > static char *icache_policy_str[] = { > > [ICACHE_POLICY_RESERVED] = "RESERVED/UNKNOWN", > > @@ -79,13 +80,24 @@ bool system_supports_mixed_endian_el0(void) > > return mixed_endian_el0; > > } > > > > +bool system_supports_aarch32_el0(void) > > +{ > > + return aarch32_el0; > > +} > > + > > static void update_mixed_endian_el0_support(struct cpuinfo_arm64 *info) > > { > > mixed_endian_el0 &= id_aa64mmfr0_mixed_endian_el0(info->reg_id_aa64mmfr0); > > } > > > > +static void update_aarch32_el0_support(struct cpuinfo_arm64 *info) > > +{ > > + aarch32_el0 &= id_aa64pfr0_aarch32_el0(info->reg_id_aa64pfr0); > > +} > > + > > static void update_cpu_features(struct cpuinfo_arm64 *info) > > { > > + update_aarch32_el0_support(info); > > update_mixed_endian_el0_support(info); > > } > > > > -- > > 2.1.4 > > ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2015-09-02 14:38 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2015-09-02 14:00 [PATCH v2 0/2] arm64: introduce run-time detection of aarch32 support Yury Norov 2015-09-02 14:00 ` [PATCH v2 1/2] arm64: cpufeature.h: resolve hidden header dependencies Yury Norov 2015-09-02 14:23 ` Mark Rutland 2015-09-02 14:00 ` [PATCH v2 2/2] arm64: don't load 32-bit binaries if platform has no aarch32_el0 Yury Norov 2015-09-02 14:15 ` Ard Biesheuvel 2015-09-02 14:38 ` Yury Norov
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