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linux-user: Check for ieee128 fpbits in PPC64 HWCAP2 feature list

Message ID 20210614191729.2981488-1-raj.khem@gmail.com
State Superseded
Headers show
Series linux-user: Check for ieee128 fpbits in PPC64 HWCAP2 feature list | expand

Commit Message

Khem Raj June 14, 2021, 7:17 p.m. UTC
glibc 2.34 is now checking for this in hwcaps at
runtime [1] and failing to run the binary if machine
does not support 128bit IEEE fp

Fixes
Fatal glibc error: CPU lacks float128 support (POWER 9 or later required)

[1] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=d337345ce145e23c5f3a956f349d924fdf54ce2d;hp=eb24865637a271ab7dad13190330105eab0d478d

Signed-off-by: Khem Raj <raj.khem@gmail.com>

Cc: Florian Weimer <fweimer@redhat.com>
---
 linux-user/elfload.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.32.0

Comments

Laurent Vivier June 20, 2021, 2:33 p.m. UTC | #1
Le 14/06/2021 à 21:17, Khem Raj a écrit :
> glibc 2.34 is now checking for this in hwcaps at

> runtime [1] and failing to run the binary if machine

> does not support 128bit IEEE fp

> 

> Fixes

> Fatal glibc error: CPU lacks float128 support (POWER 9 or later required)

> 

> [1] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=d337345ce145e23c5f3a956f349d924fdf54ce2d;hp=eb24865637a271ab7dad13190330105eab0d478d

> 

> Signed-off-by: Khem Raj <raj.khem@gmail.com>

> Cc: Florian Weimer <fweimer@redhat.com>

> ---

>  linux-user/elfload.c | 2 +-

>  1 file changed, 1 insertion(+), 1 deletion(-)

> 

> diff --git a/linux-user/elfload.c b/linux-user/elfload.c

> index 17ab06f612..e7dd18fd40 100644

> --- a/linux-user/elfload.c

> +++ b/linux-user/elfload.c

> @@ -830,7 +830,7 @@ static uint32_t get_elf_hwcap2(void)

>                    PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07 |

>                    QEMU_PPC_FEATURE2_VEC_CRYPTO);

>      GET_FEATURE2(PPC2_ISA300, QEMU_PPC_FEATURE2_ARCH_3_00 |

> -                 QEMU_PPC_FEATURE2_DARN);

> +                 QEMU_PPC_FEATURE2_DARN | QEMU_PPC_FEATURE2_HAS_IEEE128);

>  

>  #undef GET_FEATURE

>  #undef GET_FEATURE2

> 


Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Laurent Vivier June 20, 2021, 2:34 p.m. UTC | #2
Le 14/06/2021 à 21:17, Khem Raj a écrit :
> glibc 2.34 is now checking for this in hwcaps at

> runtime [1] and failing to run the binary if machine

> does not support 128bit IEEE fp

> 

> Fixes

> Fatal glibc error: CPU lacks float128 support (POWER 9 or later required)

> 

> [1] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=d337345ce145e23c5f3a956f349d924fdf54ce2d;hp=eb24865637a271ab7dad13190330105eab0d478d

> 

> Signed-off-by: Khem Raj <raj.khem@gmail.com>

> Cc: Florian Weimer <fweimer@redhat.com>

> ---

>  linux-user/elfload.c | 2 +-

>  1 file changed, 1 insertion(+), 1 deletion(-)

> 

> diff --git a/linux-user/elfload.c b/linux-user/elfload.c

> index 17ab06f612..e7dd18fd40 100644

> --- a/linux-user/elfload.c

> +++ b/linux-user/elfload.c

> @@ -830,7 +830,7 @@ static uint32_t get_elf_hwcap2(void)

>                    PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07 |

>                    QEMU_PPC_FEATURE2_VEC_CRYPTO);

>      GET_FEATURE2(PPC2_ISA300, QEMU_PPC_FEATURE2_ARCH_3_00 |

> -                 QEMU_PPC_FEATURE2_DARN);

> +                 QEMU_PPC_FEATURE2_DARN | QEMU_PPC_FEATURE2_HAS_IEEE128);

>  

>  #undef GET_FEATURE

>  #undef GET_FEATURE2

> 


Applied to my linux-user-for-6.1 branch.

Thanks,
Laurent
diff mbox series

Patch

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 17ab06f612..e7dd18fd40 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -830,7 +830,7 @@  static uint32_t get_elf_hwcap2(void)
                   PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07 |
                   QEMU_PPC_FEATURE2_VEC_CRYPTO);
     GET_FEATURE2(PPC2_ISA300, QEMU_PPC_FEATURE2_ARCH_3_00 |
-                 QEMU_PPC_FEATURE2_DARN);
+                 QEMU_PPC_FEATURE2_DARN | QEMU_PPC_FEATURE2_HAS_IEEE128);
 
 #undef GET_FEATURE
 #undef GET_FEATURE2