From 912d35f86781e64d73be1ef358f703c08905ac37 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Wed, 26 Apr 2006 10:59:21 +0200 Subject: [PATCH] Add support for the sys_vmsplice syscall sys_splice() moves data to/from pipes with a file input/output. sys_vmsplice() moves data to a pipe, with the input being a user address range instead. This uses an approach suggested by Linus, where we can hold partial ranges inside the pages[] map. Hopefully this will be useful for network receive support as well. Signed-off-by: Jens Axboe --- include/asm-powerpc/unistd.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/asm-powerpc') diff --git a/include/asm-powerpc/unistd.h b/include/asm-powerpc/unistd.h index c612f1a6277..34325e29259 100644 --- a/include/asm-powerpc/unistd.h +++ b/include/asm-powerpc/unistd.h @@ -303,8 +303,9 @@ #define __NR_unshare 282 #define __NR_splice 283 #define __NR_tee 284 +#define __NR_vmsplice 285 -#define __NR_syscalls 285 +#define __NR_syscalls 286 #ifdef __KERNEL__ #define __NR__exit __NR_exit -- cgit v1.2.3 From f10a04c034c7285a1b15dfa4a83d3e56578e34e8 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Fri, 28 Apr 2006 15:02:51 +1000 Subject: [PATCH] powerpc: Fix pagetable bloat for hugepages At present, ARCH=powerpc kernels can waste considerable space in pagetables when making large hugepage mappings. Hugepage PTEs go in PMD pages, but each PMD page maps 256M and so contains only 16 hugepage PTEs (128 bytes of data), but takes up a 1024 byte allocation. With CONFIG_PPC_64K_PAGES enabled (64k base page size), the situation is worse. Now hugepage PTEs are at the PTE page level (also mapping 256M), so we store 16 hugepage PTEs in a 64k allocation. The PowerPC MMU already means that any 256M region is either all hugepage, or all normal pages. Thus, with some care, we can use a different allocation for the hugepage PTE tables and only allocate the 128 bytes necessary. Signed-off-by: Paul Mackerras --- include/asm-powerpc/page_64.h | 1 + include/asm-powerpc/pgalloc.h | 2 ++ 2 files changed, 3 insertions(+) (limited to 'include/asm-powerpc') diff --git a/include/asm-powerpc/page_64.h b/include/asm-powerpc/page_64.h index 3fb061bab9e..eab779c2199 100644 --- a/include/asm-powerpc/page_64.h +++ b/include/asm-powerpc/page_64.h @@ -101,6 +101,7 @@ extern unsigned int HPAGE_SHIFT; - (1U << GET_HTLB_AREA(addr))) & 0xffff) #define ARCH_HAS_HUGEPAGE_ONLY_RANGE +#define ARCH_HAS_HUGETLB_FREE_PGD_RANGE #define ARCH_HAS_PREPARE_HUGEPAGE_RANGE #define ARCH_HAS_SETCLEAR_HUGE_PTE diff --git a/include/asm-powerpc/pgalloc.h b/include/asm-powerpc/pgalloc.h index a00ee002cd1..9f0917c6865 100644 --- a/include/asm-powerpc/pgalloc.h +++ b/include/asm-powerpc/pgalloc.h @@ -17,11 +17,13 @@ extern kmem_cache_t *pgtable_cache[]; #define PTE_CACHE_NUM 0 #define PMD_CACHE_NUM 1 #define PGD_CACHE_NUM 2 +#define HUGEPTE_CACHE_NUM 3 #else #define PTE_CACHE_NUM 0 #define PMD_CACHE_NUM 1 #define PUD_CACHE_NUM 1 #define PGD_CACHE_NUM 0 +#define HUGEPTE_CACHE_NUM 2 #endif /* -- cgit v1.2.3 From 1269277a5e7c6d7ae1852e648a8bcdb78035e9fa Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Mon, 24 Apr 2006 23:22:17 +0100 Subject: [PATCH] powerpc: Use check_legacy_ioport() on ppc32 too. Some people report that we die on some Macs when we are expecting to catch machine checks after poking at some random I/O address. I'd seen it happen on my dual G4 with serial ports until we fixed those to use OF, but now other users are reporting it with i8042. This expands the use of check_legacy_ioport() to avoid that situation even on 32-bit kernels. Signed-off-by: David Woodhouse Signed-off-by: Paul Mackerras --- include/asm-powerpc/io.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/asm-powerpc') diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h index 68efbea379c..f1c2469b884 100644 --- a/include/asm-powerpc/io.h +++ b/include/asm-powerpc/io.h @@ -9,6 +9,9 @@ * 2 of the License, or (at your option) any later version. */ +/* Check of existence of legacy devices */ +extern int check_legacy_ioport(unsigned long base_port); + #ifndef CONFIG_PPC64 #include #else @@ -437,9 +440,6 @@ out: #define dma_cache_wback(_start,_size) do { } while (0) #define dma_cache_wback_inv(_start,_size) do { } while (0) -/* Check of existence of legacy devices */ -extern int check_legacy_ioport(unsigned long base_port); - /* * Convert a physical pointer to a virtual kernel pointer for /dev/mem -- cgit v1.2.3 From 2833c28aa0d0326780acfa61149a2a02dcb2c9b4 Mon Sep 17 00:00:00 2001 From: Andreas Schwab Date: Thu, 27 Apr 2006 15:46:42 +0200 Subject: [PATCH] powerpc: Wire up *at syscalls Wire up *at syscalls. This patch has been tested on ppc64 (using glibc's testsuite, both 32bit and 64bit), and compile-tested for ppc32 (I have currently no ppc32 system available, but I expect no problems). Signed-off-by: Andreas Schwab Signed-off-by: Paul Mackerras --- include/asm-powerpc/unistd.h | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'include/asm-powerpc') diff --git a/include/asm-powerpc/unistd.h b/include/asm-powerpc/unistd.h index 34325e29259..908acb44cb8 100644 --- a/include/asm-powerpc/unistd.h +++ b/include/asm-powerpc/unistd.h @@ -304,8 +304,25 @@ #define __NR_splice 283 #define __NR_tee 284 #define __NR_vmsplice 285 +#define __NR_openat 286 +#define __NR_mkdirat 287 +#define __NR_mknodat 288 +#define __NR_fchownat 289 +#define __NR_futimesat 290 +#ifdef __powerpc64__ +#define __NR_newfstatat 291 +#else +#define __NR_fstatat64 291 +#endif +#define __NR_unlinkat 292 +#define __NR_renameat 293 +#define __NR_linkat 294 +#define __NR_symlinkat 295 +#define __NR_readlinkat 296 +#define __NR_fchmodat 297 +#define __NR_faccessat 298 -#define __NR_syscalls 286 +#define __NR_syscalls 299 #ifdef __KERNEL__ #define __NR__exit __NR_exit @@ -458,6 +475,7 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6 #ifdef CONFIG_PPC64 #define __ARCH_WANT_COMPAT_SYS_TIME #define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND +#define __ARCH_WANT_SYS_NEWFSTATAT #endif /* -- cgit v1.2.3 From 03054d51a70e8c273df5d9bc31fea6c843eaa1c3 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Sat, 29 Apr 2006 09:51:06 +1000 Subject: [PATCH] powerpc: Add cputable entry for POWER6 Add a cputable entry for the POWER6 processor. The SIHV and SIPR bits in the mmcra have moved in POWER6, so disable support for that until oprofile is fixed. Also tell firmware that we know about POWER6. Signed-off-by: Anton Blanchard Signed-off-by: Paul Mackerras --- include/asm-powerpc/cputable.h | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'include/asm-powerpc') diff --git a/include/asm-powerpc/cputable.h b/include/asm-powerpc/cputable.h index 4321483cce5..9fcf0162d85 100644 --- a/include/asm-powerpc/cputable.h +++ b/include/asm-powerpc/cputable.h @@ -22,6 +22,7 @@ #define PPC_FEATURE_BOOKE 0x00008000 #define PPC_FEATURE_SMT 0x00004000 #define PPC_FEATURE_ICACHE_SNOOP 0x00002000 +#define PPC_FEATURE_ARCH_2_05 0x00001000 #ifdef __KERNEL__ #ifndef __ASSEMBLY__ @@ -320,6 +321,11 @@ extern void do_cpu_ftr_fixups(unsigned long offset); CPU_FTR_MMCRA | CPU_FTR_SMT | \ CPU_FTR_COHERENT_ICACHE | CPU_FTR_LOCKLESS_TLBIE | \ CPU_FTR_MMCRA_SIHV | CPU_FTR_PURR) +#define CPU_FTRS_POWER6 (CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB | \ + CPU_FTR_HPTE_TABLE | CPU_FTR_PPCAS_ARCH_V2 | \ + CPU_FTR_MMCRA | CPU_FTR_SMT | \ + CPU_FTR_COHERENT_ICACHE | CPU_FTR_LOCKLESS_TLBIE | \ + CPU_FTR_PURR | CPU_FTR_CI_LARGE_PAGE) #define CPU_FTRS_CELL (CPU_FTR_SPLIT_ID_CACHE | CPU_FTR_USE_TB | \ CPU_FTR_HPTE_TABLE | CPU_FTR_PPCAS_ARCH_V2 | \ CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \ @@ -331,8 +337,8 @@ extern void do_cpu_ftr_fixups(unsigned long offset); #ifdef __powerpc64__ #define CPU_FTRS_POSSIBLE \ (CPU_FTRS_POWER3 | CPU_FTRS_RS64 | CPU_FTRS_POWER4 | \ - CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | CPU_FTRS_CELL | \ - CPU_FTR_CI_LARGE_PAGE) + CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | CPU_FTRS_POWER6 | \ + CPU_FTRS_CELL | CPU_FTR_CI_LARGE_PAGE) #else enum { CPU_FTRS_POSSIBLE = @@ -376,8 +382,8 @@ enum { #ifdef __powerpc64__ #define CPU_FTRS_ALWAYS \ (CPU_FTRS_POWER3 & CPU_FTRS_RS64 & CPU_FTRS_POWER4 & \ - CPU_FTRS_PPC970 & CPU_FTRS_POWER5 & CPU_FTRS_CELL & \ - CPU_FTRS_POSSIBLE) + CPU_FTRS_PPC970 & CPU_FTRS_POWER5 & CPU_FTRS_POWER6 & \ + CPU_FTRS_CELL & CPU_FTRS_POSSIBLE) #else enum { CPU_FTRS_ALWAYS = -- cgit v1.2.3