diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.9.21/0034-x86-paravirt-Dont-patch-flush_tlb_single.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.9.21/0034-x86-paravirt-Dont-patch-flush_tlb_single.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0034-x86-paravirt-Dont-patch-flush_tlb_single.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0034-x86-paravirt-Dont-patch-flush_tlb_single.patch new file mode 100644 index 00000000..aad935dc --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.9.21/0034-x86-paravirt-Dont-patch-flush_tlb_single.patch @@ -0,0 +1,71 @@ +From 7ca54ff851a9411364d557f555edb904f2786c5c Mon Sep 17 00:00:00 2001 +From: Thomas Gleixner <tglx@linutronix.de> +Date: Mon, 4 Dec 2017 15:07:30 +0100 +Subject: [PATCH 034/102] x86/paravirt: Dont patch flush_tlb_single + +commit a035795499ca1c2bd1928808d1a156eda1420383 upstream + +native_flush_tlb_single() will be changed with the upcoming +PAGE_TABLE_ISOLATION feature. This requires to have more code in +there than INVLPG. + +Remove the paravirt patching for it. + +Signed-off-by: Thomas Gleixner <tglx@linutronix.de> +Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com> +Reviewed-by: Juergen Gross <jgross@suse.com> +Acked-by: Peter Zijlstra <peterz@infradead.org> +Cc: Andy Lutomirski <luto@kernel.org> +Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> +Cc: Borislav Petkov <bp@alien8.de> +Cc: Borislav Petkov <bpetkov@suse.de> +Cc: Brian Gerst <brgerst@gmail.com> +Cc: Dave Hansen <dave.hansen@intel.com> +Cc: Dave Hansen <dave.hansen@linux.intel.com> +Cc: David Laight <David.Laight@aculab.com> +Cc: Denys Vlasenko <dvlasenk@redhat.com> +Cc: Eduardo Valentin <eduval@amazon.com> +Cc: Greg KH <gregkh@linuxfoundation.org> +Cc: H. Peter Anvin <hpa@zytor.com> +Cc: Linus Torvalds <torvalds@linux-foundation.org> +Cc: Rik van Riel <riel@redhat.com> +Cc: Will Deacon <will.deacon@arm.com> +Cc: aliguori@amazon.com +Cc: daniel.gruss@iaik.tugraz.at +Cc: hughd@google.com +Cc: keescook@google.com +Cc: linux-mm@kvack.org +Cc: michael.schwarz@iaik.tugraz.at +Cc: moritz.lipp@iaik.tugraz.at +Cc: richard.fellner@student.tugraz.at +Link: https://lkml.kernel.org/r/20171204150606.828111617@linutronix.de +Signed-off-by: Ingo Molnar <mingo@kernel.org> +Acked-by: Borislav Petkov <bp@suse.de> +Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +--- + arch/x86/kernel/paravirt_patch_64.c | 2 -- + 1 file changed, 2 deletions(-) + +diff --git a/arch/x86/kernel/paravirt_patch_64.c b/arch/x86/kernel/paravirt_patch_64.c +index bb3840c..ee43b36 100644 +--- a/arch/x86/kernel/paravirt_patch_64.c ++++ b/arch/x86/kernel/paravirt_patch_64.c +@@ -9,7 +9,6 @@ DEF_NATIVE(pv_irq_ops, save_fl, "pushfq; popq %rax"); + DEF_NATIVE(pv_mmu_ops, read_cr2, "movq %cr2, %rax"); + DEF_NATIVE(pv_mmu_ops, read_cr3, "movq %cr3, %rax"); + DEF_NATIVE(pv_mmu_ops, write_cr3, "movq %rdi, %cr3"); +-DEF_NATIVE(pv_mmu_ops, flush_tlb_single, "invlpg (%rdi)"); + DEF_NATIVE(pv_cpu_ops, clts, "clts"); + DEF_NATIVE(pv_cpu_ops, wbinvd, "wbinvd"); + +@@ -59,7 +58,6 @@ unsigned native_patch(u8 type, u16 clobbers, void *ibuf, + PATCH_SITE(pv_mmu_ops, read_cr3); + PATCH_SITE(pv_mmu_ops, write_cr3); + PATCH_SITE(pv_cpu_ops, clts); +- PATCH_SITE(pv_mmu_ops, flush_tlb_single); + PATCH_SITE(pv_cpu_ops, wbinvd); + #if defined(CONFIG_PARAVIRT_SPINLOCKS) + case PARAVIRT_PATCH(pv_lock_ops.queued_spin_unlock): +-- +2.7.4 + |