1 files changed, 0 insertions, 69 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0003-kaiser-allocate-pgd-with-order-0-when-pti-off.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0003-kaiser-allocate-pgd-with-order-0-when-pti-off.patch
deleted file mode 100644
index df60ee58..00000000
--- a/common/recipes-kernel/linux/linux-yocto-4.9.21/0003-kaiser-allocate-pgd-with-order-0-when-pti-off.patch
+++ /dev/null
@@ -1,69 +0,0 @@
-From cff1c9cfd81b8a7cc350a02d37668b1e3896287e Mon Sep 17 00:00:00 2001
-From: Hugh Dickins <hughd@google.com>
-Date: Mon, 29 Jan 2018 18:17:58 -0800
-Subject: [PATCH 03/42] kaiser: allocate pgd with order 0 when pti=off
-
-The 4.9.77 version of "x86/pti/efi: broken conversion from efi to kernel
-page table" looked nicer than the 4.4.112 version, but was suboptimal on
-machines booted with "pti=off" (or on AMD machines): it allocated pgd
-with an order 1 page whatever the setting of kaiser_enabled.
-
-Fix that by moving the definition of PGD_ALLOCATION_ORDER from
-asm/pgalloc.h to asm/pgtable.h, which already defines kaiser_enabled.
-
-Fixes: 1b92c48a2eeb ("x86/pti/efi: broken conversion from efi to kernel page table")
-Reviewed-by: Pavel Tatashin <pasha.tatashin@oracle.com>
-Cc: Steven Sistare <steven.sistare@oracle.com>
-Cc: Jiri Kosina <jkosina@suse.cz>
-Signed-off-by: Hugh Dickins <hughd@google.com>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
----
- arch/x86/include/asm/pgalloc.h | 11 -----------
- arch/x86/include/asm/pgtable.h |  6 ++++++
- 2 files changed, 6 insertions(+), 11 deletions(-)
-
-diff --git a/arch/x86/include/asm/pgalloc.h b/arch/x86/include/asm/pgalloc.h
-index 1178a51..b6d4259 100644
---- a/arch/x86/include/asm/pgalloc.h
-+++ b/arch/x86/include/asm/pgalloc.h
-@@ -27,17 +27,6 @@ static inline void paravirt_release_pud(unsigned long pfn) {}
-  */
- extern gfp_t __userpte_alloc_gfp;
- 
--#ifdef CONFIG_PAGE_TABLE_ISOLATION
--/*
-- * Instead of one PGD, we acquire two PGDs.  Being order-1, it is
-- * both 8k in size and 8k-aligned.  That lets us just flip bit 12
-- * in a pointer to swap between the two 4k halves.
-- */
--#define PGD_ALLOCATION_ORDER 1
--#else
--#define PGD_ALLOCATION_ORDER 0
--#endif
--
- /*
-  * Allocate and free page tables.
-  */
-diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
-index 2536f90..5af0401 100644
---- a/arch/x86/include/asm/pgtable.h
-+++ b/arch/x86/include/asm/pgtable.h
-@@ -20,9 +20,15 @@
- 
- #ifdef CONFIG_PAGE_TABLE_ISOLATION
- extern int kaiser_enabled;
-+/*
-+ * Instead of one PGD, we acquire two PGDs.  Being order-1, it is
-+ * both 8k in size and 8k-aligned.  That lets us just flip bit 12
-+ * in a pointer to swap between the two 4k halves.
-+ */
- #else
- #define kaiser_enabled 0
- #endif
-+#define PGD_ALLOCATION_ORDER kaiser_enabled
- 
- void ptdump_walk_pgd_level(struct seq_file *m, pgd_t *pgd);
- void ptdump_walk_pgd_level_checkwx(void);
--- 
-2.7.4
-