| Message ID | 1437616712-20860-1-git-send-email-kamal@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/arch/mips/include/asm/mach-generic/spaces.h b/arch/mips/include/asm/mach-generic/spaces.h index 9488fa5..afc96ec 100644 --- a/arch/mips/include/asm/mach-generic/spaces.h +++ b/arch/mips/include/asm/mach-generic/spaces.h @@ -94,7 +94,11 @@ #endif #ifndef FIXADDR_TOP +#ifdef CONFIG_KVM_GUEST +#define FIXADDR_TOP ((unsigned long)(long)(int)0x7ffe0000) +#else #define FIXADDR_TOP ((unsigned long)(long)(int)0xfffe0000) #endif +#endif #endif /* __ASM_MACH_GENERIC_SPACES_H */
This is a note to let you know that I have just added a patch titled MIPS: Fix KVM guest fixmap address to the linux-3.13.y-queue branch of the 3.13.y-ckt extended stable tree which can be found at: http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.13.y-queue This patch is scheduled to be released in version 3.13.11-ckt24. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.13.y-ckt tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Kamal ------ From 9985aba8b95e1e804d22120e00ff03ee54731175 Mon Sep 17 00:00:00 2001 From: James Hogan <james.hogan@imgtec.com> Date: Mon, 27 Apr 2015 15:07:16 +0100 Subject: MIPS: Fix KVM guest fixmap address commit 8e748c8d09a9314eedb5c6367d9acfaacddcdc88 upstream. KVM guest kernels for trap & emulate run in user mode, with a modified set of kernel memory segments. However the fixmap address is still in the normal KSeg3 region at 0xfffe0000 regardless, causing problems when cache alias handling makes use of them when handling copy on write. Therefore define FIXADDR_TOP as 0x7ffe0000 in the guest kernel mapped region when CONFIG_KVM_GUEST is defined. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/9887/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- arch/mips/include/asm/mach-generic/spaces.h | 4 ++++ 1 file changed, 4 insertions(+) -- 1.9.1