diff options
Diffstat (limited to 'meta-seattle/recipes-kernel/linux/files/02-319-Enable-32-bit-EL0-with-64K-and-4K-page-s.patch')
| -rw-r--r-- | meta-seattle/recipes-kernel/linux/files/02-319-Enable-32-bit-EL0-with-64K-and-4K-page-s.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/meta-seattle/recipes-kernel/linux/files/02-319-Enable-32-bit-EL0-with-64K-and-4K-page-s.patch b/meta-seattle/recipes-kernel/linux/files/02-319-Enable-32-bit-EL0-with-64K-and-4K-page-s.patch new file mode 100644 index 00000000..18a42adb --- /dev/null +++ b/meta-seattle/recipes-kernel/linux/files/02-319-Enable-32-bit-EL0-with-64K-and-4K-page-s.patch @@ -0,0 +1,49 @@ +From ab3d099133f84d59e02a572801659cf8b1145f72 Mon Sep 17 00:00:00 2001 +From: Adrian Calianu <adrian.calianu@enea.com> +Date: Thu, 19 Feb 2015 09:24:22 +0100 +Subject: [PATCH 1/1] Seattle: Enable 32-bit EL0 with 64K and 4K page sizes + +Seattle is able to switch to aarch32 EL0 only with following setup: +- Page Size 64K - 42bit VA +- Page Size 4K - 48bit VA + +Upstream-Status: Pending + +Signed-off-by: Adrian Calianu <adrian.calianu@enea.com> +--- + arch/arm64/Kconfig | 5 +++-- + 1 file changed, 3 insertions(+), 2 deletions(-) + +diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig +index d35a06c..68b4859 100644 +--- a/arch/arm64/Kconfig ++++ b/arch/arm64/Kconfig +@@ -338,6 +338,7 @@ endchoice + choice + prompt "Virtual address space size" + default ARM64_VA_BITS_39 if ARM64_4K_PAGES ++ default ARM64_VA_BITS_48 if ARM64_4K_PAGES + default ARM64_VA_BITS_42 if ARM64_64K_PAGES + help + Allows choosing one of multiple possible virtual address +@@ -354,7 +355,7 @@ config ARM64_VA_BITS_42 + + config ARM64_VA_BITS_48 + bool "48-bit" +- depends on !ARM_SMMU ++ depends on ARM64_4K_PAGES + + endchoice + +@@ -613,7 +614,7 @@ source "fs/Kconfig.binfmt" + + config COMPAT + bool "Kernel support for 32-bit EL0" +- depends on !ARM64_64K_PAGES ++ depends on !ARM64_64K_PAGES || EXPERT + select COMPAT_BINFMT_ELF + select HAVE_UID16 + select OLD_SIGSUSPEND3 +-- +1.9.1 + |