diff options
Diffstat (limited to 'meta-seattle/recipes-kernel/linux/files/02-412-Enable-32-bit-EL0-with-64K-and-4K-page-s.patch')
| -rw-r--r-- | meta-seattle/recipes-kernel/linux/files/02-412-Enable-32-bit-EL0-with-64K-and-4K-page-s.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/meta-seattle/recipes-kernel/linux/files/02-412-Enable-32-bit-EL0-with-64K-and-4K-page-s.patch b/meta-seattle/recipes-kernel/linux/files/02-412-Enable-32-bit-EL0-with-64K-and-4K-page-s.patch new file mode 100644 index 00000000..a949dd6d --- /dev/null +++ b/meta-seattle/recipes-kernel/linux/files/02-412-Enable-32-bit-EL0-with-64K-and-4K-page-s.patch @@ -0,0 +1,48 @@ +From 15839d0281cba986e018a59827d69ae419112162 Mon Sep 17 00:00:00 2001 +From: Adrian Calianu <adrian.calianu@enea.com> +Date: Tue, 28 Jul 2015 15:56:51 +0200 +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 | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig +index 7796af4..29f6a03 100644 +--- a/arch/arm64/Kconfig ++++ b/arch/arm64/Kconfig +@@ -436,6 +436,7 @@ 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 +@@ -452,6 +453,7 @@ config ARM64_VA_BITS_42 + + config ARM64_VA_BITS_48 + bool "48-bit" ++ depends on ARM64_4K_PAGES + + endchoice + +@@ -715,7 +717,7 @@ source "fs/Kconfig.binfmt" + + config COMPAT + bool "Kernel support for 32-bit EL0" +- depends on !ARM64_64K_PAGES || EXPERT ++ depends on !ARM64_64K_PAGES || EXPERT + select COMPAT_BINFMT_ELF + select HAVE_UID16 + select OLD_SIGSUSPEND3 +-- +1.9.1 + |