diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.9.21/0041-kaiser-Set-_PAGE_NX-only-if-supported.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.9.21/0041-kaiser-Set-_PAGE_NX-only-if-supported.patch | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0041-kaiser-Set-_PAGE_NX-only-if-supported.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0041-kaiser-Set-_PAGE_NX-only-if-supported.patch deleted file mode 100644 index cc925f0f..00000000 --- a/common/recipes-kernel/linux/linux-yocto-4.9.21/0041-kaiser-Set-_PAGE_NX-only-if-supported.patch +++ /dev/null @@ -1,34 +0,0 @@ -From 2627b29df65208ad9615fb761e37df13e3328e8c Mon Sep 17 00:00:00 2001 -From: Lepton Wu <ytht.net@gmail.com> -Date: Fri, 12 Jan 2018 13:42:56 -0800 -Subject: [PATCH 041/103] kaiser: Set _PAGE_NX only if supported - -This finally resolve crash if loaded under qemu + haxm. Haitao Shan pointed -out that the reason of that crash is that NX bit get set for page tables. -It seems we missed checking if _PAGE_NX is supported in kaiser_add_user_map - -Link: https://www.spinics.net/lists/kernel/msg2689835.html - -Reviewed-by: Guenter Roeck <groeck@chromium.org> -Signed-off-by: Lepton Wu <ytht.net@gmail.com> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - arch/x86/mm/kaiser.c | 2 ++ - 1 file changed, 2 insertions(+) - -diff --git a/arch/x86/mm/kaiser.c b/arch/x86/mm/kaiser.c -index d8376b4..42a5307 100644 ---- a/arch/x86/mm/kaiser.c -+++ b/arch/x86/mm/kaiser.c -@@ -184,6 +184,8 @@ static int kaiser_add_user_map(const void *__start_addr, unsigned long size, - * requires that not to be #defined to 0): so mask it off here. - */ - flags &= ~_PAGE_GLOBAL; -+ if (!(__supported_pte_mask & _PAGE_NX)) -+ flags &= ~_PAGE_NX; - - for (; address < end_addr; address += PAGE_SIZE) { - target_address = get_pa_from_mapping(address); --- -2.7.4 - |