Merge tag 'powerpc-4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Highlights include:

   - Support for the kexec_file_load() syscall, which is a prereq for
     secure and trusted boot.

   - Prevent kernel execution of userspace on P9 Radix (similar to
     SMEP/PXN).

   - Sort the exception tables at build time, to save time at boot, and
     store them as relative offsets to save space in the kernel image &
     memory.

   - Allow building the kernel with thin archives, which should allow us
     to build an allyesconfig once some other fixes land.

   - Build fixes to allow us to correctly rebuild when changing the
     kernel endian from big to little or vice versa.

   - Plumbing so that we can avoid doing a full mm TLB flush on P9
     Radix.

   - Initial stack protector support (-fstack-protector).

   - Support for dumping the radix (aka. Linux) and hash page tables via
     debugfs.

   - Fix an oops in cxl coredump generation when cxl_get_fd() is used.

   - Freescale updates from Scott: "Highlights include 8xx hugepage
     support, qbman fixes/cleanup, device tree updates, and some misc
     cleanup."

   - Many and varied fixes and minor enhancements as always.

  Thanks to:
    Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Anshuman
    Khandual, Anton Blanchard, Balbir Singh, Bartlomiej Zolnierkiewicz,
    Christophe Jaillet, Christophe Leroy, Denis Kirjanov, Elimar
    Riesebieter, Frederic Barrat, Gautham R. Shenoy, Geliang Tang, Geoff
    Levand, Jack Miller, Johan Hovold, Lars-Peter Clausen, Libin,
    Madhavan Srinivasan, Michael Neuling, Nathan Fontenot, Naveen N.
    Rao, Nicholas Piggin, Pan Xinhui, Peter Senna Tschudin, Rashmica
    Gupta, Rui Teng, Russell Currey, Scott Wood, Simon Guo, Suraj
    Jitindar Singh, Thiago Jung Bauermann, Tobias Klauser, Vaibhav Jain"

[ And thanks to Michael, who took time off from a new baby to get this
  pull request done.   - Linus ]

* tag 'powerpc-4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (174 commits)
  powerpc/fsl/dts: add FMan node for t1042d4rdb
  powerpc/fsl/dts: add sg_2500_aqr105_phy4 alias on t1024rdb
  powerpc/fsl/dts: add QMan and BMan nodes on t1024
  powerpc/fsl/dts: add QMan and BMan nodes on t1023
  soc/fsl/qman: test: use DEFINE_SPINLOCK()
  powerpc/fsl-lbc: use DEFINE_SPINLOCK()
  powerpc/8xx: Implement support of hugepages
  powerpc: get hugetlbpage handling more generic
  powerpc: port 64 bits pgtable_cache to 32 bits
  powerpc/boot: Request no dynamic linker for boot wrapper
  soc/fsl/bman: Use resource_size instead of computation
  soc/fsl/qe: use builtin_platform_driver
  powerpc/fsl_pmc: use builtin_platform_driver
  powerpc/83xx/suspend: use builtin_platform_driver
  powerpc/ftrace: Fix the comments for ftrace_modify_code
  powerpc/perf: macros for power9 format encoding
  powerpc/perf: power9 raw event format encoding
  powerpc/perf: update attribute_group data structure
  powerpc/perf: factor out the event format field
  powerpc/mm/iommu, vfio/spapr: Put pages on VFIO container shutdown
  ...

2 files changed, 64 insertions, 34 deletions

diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index d7437777baaa..d419d0e51fe5 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -148,7 +148,36 @@ struct kexec_file_ops {
 	kexec_verify_sig_t *verify_sig;
 #endif
 };
-#endif
+
+/**
+ * struct kexec_buf - parameters for finding a place for a buffer in memory
+ * @image:	kexec image in which memory to search.
+ * @buffer:	Contents which will be copied to the allocated memory.
+ * @bufsz:	Size of @buffer.
+ * @mem:	On return will have address of the buffer in memory.
+ * @memsz:	Size for the buffer in memory.
+ * @buf_align:	Minimum alignment needed.
+ * @buf_min:	The buffer can't be placed below this address.
+ * @buf_max:	The buffer can't be placed above this address.
+ * @top_down:	Allocate from top of memory.
+ */
+struct kexec_buf {
+	struct kimage *image;
+	void *buffer;
+	unsigned long bufsz;
+	unsigned long mem;
+	unsigned long memsz;
+	unsigned long buf_align;
+	unsigned long buf_min;
+	unsigned long buf_max;
+	bool top_down;
+};
+
+int __weak arch_kexec_walk_mem(struct kexec_buf *kbuf,
+			       int (*func)(u64, u64, void *));
+extern int kexec_add_buffer(struct kexec_buf *kbuf);
+int kexec_locate_mem_hole(struct kexec_buf *kbuf);
+#endif /* CONFIG_KEXEC_FILE */
 
 struct kimage {
 	kimage_entry_t head;
@@ -212,11 +241,6 @@ extern asmlinkage long sys_kexec_load(unsigned long entry,
 					struct kexec_segment __user *segments,
 					unsigned long flags);
 extern int kernel_kexec(void);
-extern int kexec_add_buffer(struct kimage *image, char *buffer,
-			    unsigned long bufsz, unsigned long memsz,
-			    unsigned long buf_align, unsigned long buf_min,
-			    unsigned long buf_max, bool top_down,
-			    unsigned long *load_addr);
 extern struct page *kimage_alloc_control_pages(struct kimage *image,
 						unsigned int order);
 extern int kexec_load_purgatory(struct kimage *image, unsigned long min,
diff --git a/include/soc/fsl/qman.h b/include/soc/fsl/qman.h
index 37f3eb001a16..3d4df74a96de 100644
--- a/include/soc/fsl/qman.h
+++ b/include/soc/fsl/qman.h
@@ -244,11 +244,11 @@ static inline int qm_sg_entry_get_off(const struct qm_sg_entry *sg)
 struct qm_dqrr_entry {
 	u8 verb;
 	u8 stat;
-	u16 seqnum;	/* 15-bit */
+	__be16 seqnum;	/* 15-bit */
 	u8 tok;
 	u8 __reserved2[3];
-	u32 fqid;	/* 24-bit */
-	u32 contextB;
+	__be32 fqid;	/* 24-bit */
+	__be32 context_b;
 	struct qm_fd fd;
 	u8 __reserved4[32];
 } __packed;
@@ -262,6 +262,11 @@ struct qm_dqrr_entry {
 #define QM_DQRR_STAT_UNSCHEDULED	0x02	/* Unscheduled dequeue */
 #define QM_DQRR_STAT_DQCR_EXPIRED	0x01	/* VDQCR or PDQCR expired*/
 
+/* 'fqid' is a 24-bit field in every h/w descriptor */
+#define QM_FQID_MASK	GENMASK(23, 0)
+#define qm_fqid_set(p, v) ((p)->fqid = cpu_to_be32((v) & QM_FQID_MASK))
+#define qm_fqid_get(p)    (be32_to_cpu((p)->fqid) & QM_FQID_MASK)
+
 /* "ERN Message Response" */
 /* "FQ State Change Notification" */
 union qm_mr_entry {
@@ -272,12 +277,11 @@ union qm_mr_entry {
 	struct {
 		u8 verb;
 		u8 dca;
-		u16 seqnum;
+		__be16 seqnum;
 		u8 rc;		/* Rej Code: 8-bit */
-		u8 orp_hi;	/* ORP: 24-bit */
-		u16 orp_lo;
-		u32 fqid;	/* 24-bit */
-		u32 tag;
+		u8 __reserved[3];
+		__be32 fqid;	/* 24-bit */
+		__be32 tag;
 		struct qm_fd fd;
 		u8 __reserved1[32];
 	} __packed ern;
@@ -285,8 +289,8 @@ union qm_mr_entry {
 		u8 verb;
 		u8 fqs;		/* Frame Queue Status */
 		u8 __reserved1[6];
-		u32 fqid;	/* 24-bit */
-		u32 contextB;
+		__be32 fqid;	/* 24-bit */
+		__be32 context_b;
 		u8 __reserved2[48];
 	} __packed fq;		/* FQRN/FQRNI/FQRL/FQPN */
 };
@@ -405,13 +409,13 @@ static inline u64 qm_fqd_context_a_get64(const struct qm_fqd *fqd)
 
 static inline void qm_fqd_stashing_set64(struct qm_fqd *fqd, u64 addr)
 {
-	fqd->context_a.context_hi = upper_32_bits(addr);
-	fqd->context_a.context_lo = lower_32_bits(addr);
+	fqd->context_a.context_hi = cpu_to_be16(upper_32_bits(addr));
+	fqd->context_a.context_lo = cpu_to_be32(lower_32_bits(addr));
 }
 
 static inline void qm_fqd_context_a_set64(struct qm_fqd *fqd, u64 addr)
 {
-	fqd->context_a.hi = cpu_to_be16(upper_32_bits(addr));
+	fqd->context_a.hi = cpu_to_be32(upper_32_bits(addr));
 	fqd->context_a.lo = cpu_to_be32(lower_32_bits(addr));
 }
 
@@ -521,7 +525,7 @@ static inline int qm_fqd_get_wq(const struct qm_fqd *fqd)
  */
 struct qm_cgr_wr_parm {
 	/* MA[24-31], Mn[19-23], SA[12-18], Sn[6-11], Pn[0-5] */
-	u32 word;
+	__be32 word;
 };
 /*
  * This struct represents the 13-bit "CS_THRES" CGR field. In the corresponding
@@ -532,7 +536,7 @@ struct qm_cgr_wr_parm {
  */
 struct qm_cgr_cs_thres {
 	/* _res[13-15], TA[5-12], Tn[0-4] */
-	u16 word;
+	__be16 word;
 };
 /*
  * This identical structure of CGR fields is present in the "Init/Modify CGR"
@@ -549,10 +553,10 @@ struct __qm_mc_cgr {
 	u8 cscn_en;	/* boolean, use QM_CGR_EN */
 	union {
 		struct {
-			u16 cscn_targ_upd_ctrl; /* use QM_CSCN_TARG_UDP_ */
-			u16 cscn_targ_dcp_low;	/* CSCN_TARG_DCP low-16bits */
+			__be16 cscn_targ_upd_ctrl; /* use QM_CGR_TARG_UDP_* */
+			__be16 cscn_targ_dcp_low;
 		};
-		u32 cscn_targ;	/* use QM_CGR_TARG_* */
+		__be32 cscn_targ;	/* use QM_CGR_TARG_* */
 	};
 	u8 cstd_en;	/* boolean, use QM_CGR_EN */
 	u8 cs;		/* boolean, only used in query response */
@@ -568,7 +572,9 @@ struct __qm_mc_cgr {
 /* Convert CGR thresholds to/from "cs_thres" format */
 static inline u64 qm_cgr_cs_thres_get64(const struct qm_cgr_cs_thres *th)
 {
-	return ((th->word >> 5) & 0xff) << (th->word & 0x1f);
+	int thres = be16_to_cpu(th->word);
+
+	return ((thres >> 5) & 0xff) << (thres & 0x1f);
 }
 
 static inline int qm_cgr_cs_thres_set64(struct qm_cgr_cs_thres *th, u64 val,
@@ -584,23 +590,23 @@ static inline int qm_cgr_cs_thres_set64(struct qm_cgr_cs_thres *th, u64 val,
 		if (roundup && oddbit)
 			val++;
 	}
-	th->word = ((val & 0xff) << 5) | (e & 0x1f);
+	th->word = cpu_to_be16(((val & 0xff) << 5) | (e & 0x1f));
 	return 0;
 }
 
 /* "Initialize FQ" */
 struct qm_mcc_initfq {
 	u8 __reserved1[2];
-	u16 we_mask;	/* Write Enable Mask */
-	u32 fqid;	/* 24-bit */
-	u16 count;	/* Initialises 'count+1' FQDs */
+	__be16 we_mask;	/* Write Enable Mask */
+	__be32 fqid;	/* 24-bit */
+	__be16 count;	/* Initialises 'count+1' FQDs */
 	struct qm_fqd fqd; /* the FQD fields go here */
 	u8 __reserved2[30];
 } __packed;
 /* "Initialize/Modify CGR" */
 struct qm_mcc_initcgr {
 	u8 __reserve1[2];
-	u16 we_mask;	/* Write Enable Mask */
+	__be16 we_mask;	/* Write Enable Mask */
 	struct __qm_mc_cgr cgr;	/* CGR fields */
 	u8 __reserved2[2];
 	u8 cgid;
@@ -654,7 +660,7 @@ struct qman_cgr;
 /*
  * This enum, and the callback type that returns it, are used when handling
  * dequeued frames via DQRR. Note that for "null" callbacks registered with the
- * portal object (for handling dequeues that do not demux because contextB is
+ * portal object (for handling dequeues that do not demux because context_b is
  * NULL), the return value *MUST* be qman_cb_dqrr_consume.
  */
 enum qman_cb_dqrr_result {
@@ -859,11 +865,11 @@ void qman_p_static_dequeue_add(struct qman_portal *p, u32 pools);
  * qman_fq" for more info). NO_MODIFY is only intended for enqueuing to
  * pre-existing frame-queues that aren't to be otherwise interfered with, it
  * prevents all other modifications to the frame queue. The TO_DCPORTAL flag
- * causes the driver to honour any contextB modifications requested in the
+ * causes the driver to honour any context_b modifications requested in the
  * qm_init_fq() API, as this indicates the frame queue will be consumed by a
  * direct-connect portal (PME, CAAM, or Fman). When frame queues are consumed by
- * software portals, the contextB field is controlled by the driver and can't be
- * modified by the caller.
+ * software portals, the context_b field is controlled by the driver and can't
+ * be modified by the caller.
  */
 int qman_create_fq(u32 fqid, u32 flags, struct qman_fq *fq);