Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted

Pull pin control updates from Linus Walleij:
 "Core changes:

   - Use the non-blocking mux_state_try_select() in the generic MUX pin
     control back-end

   - Free pin maps on pinctrl_generic_to_map() failure in the core
     helpers

  New hardware pin control:

   - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC
     (this is for the low power audio, LPASS = Low Power Audio SubSystem
     portions)

   - Upboard support on top of the Intel pin controller

   - Apple T6030 and T6031 support (just compatible strings)

   - Samsung Exynos 8855 SoC

   - Mediatek MT6858 SoC

   - Rockchip RK3308B and RV1106 SoCs

   - Airoha EN7523 and AN7563 SoCs

  Improvements:

   - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable

   - Qualcomm improvements on top of the Qualcomm PDC (power domain
     controller) irqchip improvements from tglx:s tree

   - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups

   - The NPCM8xx driver has been put into shape fixing many pin and
     group definitions

   - Some non-urgent Tegra 264 pin assignments are fixed up

   - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and
     pin assignments, missing features etc"

* tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits)
  dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema
  pinctrl: meson: sync some modify from A4
  pinctrl: meson: a4: Add input enable pin configuration
  pinctrl: realtek: rtd1625: remove unused group name spdif_sel
  pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13
  dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema
  Revert "Merge branch 'ib-rsk7204' into devel"
  pinctrl: rockchip: Add RV1106 pinctrl support
  dt-bindings: pinctrl: rockchip: Add RV1106 compatible
  pinctrl: rockchip: Decode drive strength in the get function
  pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable
  pinctrl: airoha: add support of an7563 SoC
  dt-bindings: pinctrl: airoha: add support of an7563 pin controller
  pinctrl: airoha: try to find chip scu node by phandle first
  pinctrl: airoha: add support of en7523 SoC
  dt-bindings: pinctrl: airoha: add support of en7523 pin controller
  pinctrl: airoha: an7583: add support for olt pinmux
  pinctrl: airoha: an7583: add support for pon_alt pinmux
  pinctrl: airoha: an7583: add support for npu_uart pinmux
  dt-bindings: pinctrl: airoha: an7583: add missed features
  ...

1 files changed, 119 insertions, 0 deletions

diff --git a/tools/objtool/klp-symid.c b/tools/objtool/klp-symid.c
new file mode 100644
index 000000000..b19f76dff
--- /dev/null
+++ b/tools/objtool/klp-symid.c
@@ -0,0 +1,119 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Emit the .klp.symid table which allows "objtool klp diff" to reliably
+ * disambiguate duplicate-named local symbols in vmlinux.
+ *
+ * Livepatch identifies a duplicate-named symbol by its position (sympos)
+ * among the same-named kallsyms entries, counted in ascending address order
+ * in the final linked vmlinux.  That order can't be derived from vmlinux.o
+ * alone: the final link reorders sub-sections (.text.unlikely*, .data..*,
+ * etc).
+ *
+ * Bridge the gap with a table which survives the final link: a single
+ * non-alloc section containing an array of { id, addr } entries, where
+ * 'id' is a unique counter identifier and 'addr' has a relocation to the
+ * symbol.  The linker copies 'id' verbatim and resolves 'addr' to the symbol's
+ * final address.
+ *
+ * The table is only emitted for vmlinux.o, and only when klp-build asks for it
+ * with KLP_SYMIDS=1, which adds --klp-symids to the vmlinux.o objtool run.
+ *
+ * It can't survive --gc-sections, which sweeps the whole section; klp-build
+ * rejects CONFIG_LD_DEAD_CODE_DATA_ELIMINATION.
+ */
+#include <linux/string.h>
+
+#include <objtool/objtool.h>
+#include <objtool/warn.h>
+#include <objtool/endianness.h>
+#include <objtool/klp.h>
+
+static const char * const discarded_secs[] = {
+	".discard",
+	".exitcall.exit",
+	".modinfo",
+	".no_trim_symbol",
+	"__tracepoint_check",
+};
+
+static bool discarded_sec(struct section *sec)
+{
+	if (!(sec->sh.sh_flags & SHF_ALLOC))
+		return true;
+
+	for (int i = 0; i < ARRAY_SIZE(discarded_secs); i++)
+		if (strstarts(sec->name, discarded_secs[i]))
+			return true;
+
+	return false;
+}
+
+static bool symid_needed(struct elf *elf, struct symbol *sym)
+{
+	struct symbol *s;
+
+	if (!is_local_sym(sym) || is_undef_sym(sym))
+		return false;
+
+	if (!is_func_sym(sym) && !is_object_sym(sym))
+		return false;
+
+	if (is_prefix_func(sym))
+		return false;
+
+	if (discarded_sec(sym->sec))
+		return false;
+
+	for_each_sym_by_name(elf, sym->name, s) {
+		if (s == sym || is_sec_sym(s) || is_file_sym(s) || is_undef_sym(s))
+			continue;
+		return true;
+	}
+
+	return false;
+}
+
+int klp_create_symid_sections(struct objtool_file *file)
+{
+	struct elf *elf = file->elf;
+	struct klp_symid *symids;
+	struct section *sec;
+	struct symbol *sym;
+	u64 nr = 0, i = 0;
+
+	if (!str_ends_with(objname, "vmlinux.o"))
+		return 0;
+
+	for_each_sym(elf, sym)
+		if (symid_needed(elf, sym))
+			nr++;
+
+	if (!nr)
+		return 0;
+
+	sec = elf_create_section(elf, KLP_SYMID_SEC, 0, sizeof(struct klp_symid),
+				 SHT_PROGBITS, 8, 0);
+	if (!sec)
+		return -1;
+
+	symids = elf_add_data(elf, sec, NULL, nr * sizeof(struct klp_symid));
+	if (!symids)
+		return -1;
+
+	for_each_sym(elf, sym) {
+		if (!symid_needed(elf, sym))
+			continue;
+
+		symids[i].id = bswap_if_needed(elf, i);
+
+		if (!elf_create_reloc(elf, sec,
+				      i * sizeof(struct klp_symid) +
+				      offsetof(struct klp_symid, addr),
+				      sym, 0, R_ABS64))
+			return -1;
+
+		i++;
+	}
+
+	return 0;
+}