Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

torvalds · torvalds · commit 35c55685fc80 · 2018-11-10T07:07:21.000-06:00
Pull arm64 fixes from Catalin Marinas:

 - Fix occasional page fault during boot due to memblock resizing before
   the linear map is up.

 - Define NET_IP_ALIGN to 0 to improve the DMA performance on some
   platforms.

 - lib/raid6 test build fix.

 - .mailmap update for Punit Agrawal

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: memblock: don't permit memblock resizing until linear mapping is up
  arm64: mm: define NET_IP_ALIGN to 0
  lib/raid6: Fix arm64 test build
  mailmap: Update email for Punit Agrawal
diff --git a/.mailmap b/.mailmap
@@ -159,6 +159,7 @@ Peter Oruba <peter@oruba.de>
 Peter Oruba <peter.oruba@amd.com>
 Pratyush Anand <pratyush.anand@gmail.com> <pratyush.anand@st.com>
 Praveen BP <praveenbp@ti.com>
+Punit Agrawal <punitagrawal@gmail.com> <punit.agrawal@arm.com>
 Qais Yousef <qsyousef@gmail.com> <qais.yousef@imgtec.com>
 Oleksij Rempel <linux@rempel-privat.de> <bug-track@fisher-privat.net>
 Oleksij Rempel <linux@rempel-privat.de> <external.Oleksij.Rempel@de.bosch.com>
diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h
@@ -24,6 +24,14 @@
 #define KERNEL_DS	UL(-1)
 #define USER_DS		(TASK_SIZE_64 - 1)
 
+/*
+ * On arm64 systems, unaligned accesses by the CPU are cheap, and so there is
+ * no point in shifting all network buffers by 2 bytes just to make some IP
+ * header fields appear aligned in memory, potentially sacrificing some DMA
+ * performance on some platforms.
+ */
+#define NET_IP_ALIGN	0
+
 #ifndef __ASSEMBLY__
 #ifdef __KERNEL__
 
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
@@ -483,8 +483,6 @@ void __init arm64_memblock_init(void)
 	high_memory = __va(memblock_end_of_DRAM() - 1) + 1;
 
 	dma_contiguous_reserve(arm64_dma_phys_limit);
-
-	memblock_allow_resize();
 }
 
 void __init bootmem_init(void)
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
@@ -659,6 +659,8 @@ void __init paging_init(void)
 
 	memblock_free(__pa_symbol(init_pg_dir),
 		      __pa_symbol(init_pg_end) - __pa_symbol(init_pg_dir));
+
+	memblock_allow_resize();
 }
 
 /*
diff --git a/lib/raid6/test/Makefile b/lib/raid6/test/Makefile
@@ -27,7 +27,7 @@ ifeq ($(ARCH),arm)
         CFLAGS += -I../../../arch/arm/include -mfpu=neon
         HAS_NEON = yes
 endif
-ifeq ($(ARCH),arm64)
+ifeq ($(ARCH),aarch64)
         CFLAGS += -I../../../arch/arm64/include
         HAS_NEON = yes
 endif
@@ -41,7 +41,7 @@ ifeq ($(IS_X86),yes)
 		    gcc -c -x assembler - >&/dev/null &&        \
 		    rm ./-.o && echo -DCONFIG_AS_AVX512=1)
 else ifeq ($(HAS_NEON),yes)
-        OBJS   += neon.o neon1.o neon2.o neon4.o neon8.o
+        OBJS   += neon.o neon1.o neon2.o neon4.o neon8.o recov_neon.o recov_neon_inner.o
         CFLAGS += -DCONFIG_KERNEL_MODE_NEON=1
 else
         HAS_ALTIVEC := $(shell printf '\#include <altivec.h>\nvector int a;\n' |\

Original file line number	Diff line number	Diff line change
`@@ -483,8 +483,6 @@ void __init arm64_memblock_init(void)`
`483`	`483`	`high_memory = __va(memblock_end_of_DRAM() - 1) + 1;`
`484`	`484`
`485`	`485`	`dma_contiguous_reserve(arm64_dma_phys_limit);`
`486`		`-`
`487`		`- memblock_allow_resize();`
`488`	`486`	`}`
`489`	`487`
`490`	`488`	`void __init bootmem_init(void)`
Original file line number	Diff line number	Diff line change
`@@ -659,6 +659,8 @@ void __init paging_init(void)`
`659`	`659`
`660`	`660`	`memblock_free(__pa_symbol(init_pg_dir),`
`661`	`661`	`__pa_symbol(init_pg_end) - __pa_symbol(init_pg_dir));`
	`662`	`+`
	`663`	`+ memblock_allow_resize();`
`662`	`664`	`}`
`663`	`665`
`664`	`666`	`/*`