Commit 95c46afe authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Remove IOMMU_VMERGE config option
  powerpc: Fix swiotlb to respect the boot option
  powerpc: Do not call prink when CONFIG_PRINTK is not defined
  powerpc: Use correct ccr bit for syscall error status
  powerpc/fsl-booke: Get coherent bit from PTE
  powerpc/85xx: Make sure lwarx hint isn't set on ppc32
parents cf3966bf 191aee58

arch/powerpc/Kconfig

+0 −13
Original line number Diff line number Diff line
@@ -313,19 +313,6 @@ config 8XX_MINIMAL_FPEMU 


	  It is recommended that you build a soft-float userspace instead.



config IOMMU_VMERGE

	bool "Enable IOMMU virtual merging"

	depends on PPC64

	default y

	help

	  Cause IO segments sent to a device for DMA to be merged virtually

	  by the IOMMU when they happen to have been allocated contiguously.

	  This doesn't add pressure to the IOMMU allocator. However, some

	  drivers don't support getting large merged segments coming back

	  from *_map_sg().



	  Most drivers don't have this problem; it is safe to say Y here.



config IOMMU_HELPER

	def_bool PPC64

arch/powerpc/include/asm/ppc-opcode.h

+3 −3
Original line number Diff line number Diff line
@@ -25,7 +25,7 @@ 
#define PPC_INST_LDARX			0x7c0000a8

#define PPC_INST_LSWI			0x7c0004aa

#define PPC_INST_LSWX			0x7c00042a

#define PPC_INST_LWARX			0x7c000029

#define PPC_INST_LWARX			0x7c000028

#define PPC_INST_LWSYNC			0x7c2004ac

#define PPC_INST_LXVD2X			0x7c000698

#define PPC_INST_MCRXR			0x7c000400
@@ -62,8 +62,8 @@ 
#define __PPC_T_TLB(t)	(((t) & 0x3) << 21)

#define __PPC_WC(w)	(((w) & 0x3) << 21)

/*

 * Only use the larx hint bit on 64bit CPUs. Once we verify it doesn't have

 * any side effects on all 32bit processors, we can do this all the time.

 * Only use the larx hint bit on 64bit CPUs. e500v1/v2 based CPUs will treat a

 * larx with EH set as an illegal instruction.

 */

#ifdef CONFIG_PPC64

#define __PPC_EH(eh)	(((eh) & 0x1) << 0)

arch/powerpc/include/asm/syscall.h

+3 −3
Original line number Diff line number Diff line
@@ -30,7 +30,7 @@ static inline void syscall_rollback(struct task_struct *task, 
static inline long syscall_get_error(struct task_struct *task,

				     struct pt_regs *regs)

{

	return (regs->ccr & 0x1000) ? -regs->gpr[3] : 0;

	return (regs->ccr & 0x10000000) ? -regs->gpr[3] : 0;

}



static inline long syscall_get_return_value(struct task_struct *task,
@@ -44,10 +44,10 @@ static inline void syscall_set_return_value(struct task_struct *task, 
					    int error, long val)

{

	if (error) {

		regs->ccr |= 0x1000L;

		regs->ccr |= 0x10000000L;

		regs->gpr[3] = -error;

	} else {

		regs->ccr &= ~0x1000L;

		regs->ccr &= ~0x10000000L;

		regs->gpr[3] = val;

	}

}

arch/powerpc/kernel/head_fsl_booke.S

+4 −3
Original line number Diff line number Diff line
@@ -746,9 +746,6 @@ finish_tlb_load: 
	rlwimi	r12, r11, 32-19, 27, 31	/* extract WIMGE from pte */

#else

	rlwimi	r12, r11, 26, 27, 31	/* extract WIMGE from pte */

#endif

#ifdef CONFIG_SMP

	ori	r12, r12, MAS2_M

#endif

	mtspr	SPRN_MAS2, r12
@@ -887,13 +884,17 @@ KernelSPE: 
	lwz	r3,_MSR(r1)

	oris	r3,r3,MSR_SPE@h

	stw	r3,_MSR(r1)	/* enable use of SPE after return */

#ifdef CONFIG_PRINTK

	lis	r3,87f@h

	ori	r3,r3,87f@l

	mr	r4,r2		/* current */

	lwz	r5,_NIP(r1)

	bl	printk

#endif

	b	ret_from_except

#ifdef CONFIG_PRINTK

87:	.string	"SPE used in kernel  (task=%p, pc=%x)  \n"

#endif

	.align	4,0



#endif /* CONFIG_SPE */

arch/powerpc/kernel/iommu.c

+1 −6
Original line number Diff line number Diff line
@@ -42,12 +42,7 @@ 


#define DBG(...)



#ifdef CONFIG_IOMMU_VMERGE

static int novmerge = 0;

#else

static int novmerge = 1;

#endif



static int novmerge;

static int protect4gb = 1;



static void __iommu_free(struct iommu_table *, dma_addr_t, unsigned int);

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