Adding upstream version 6.7.7.upstream/6.7.7

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 237 deletions

diff --git a/arch/ia64/kernel/patch.c b/arch/ia64/kernel/patch.c
deleted file mode 100644
index 7f21a8c57e..0000000000
--- a/arch/ia64/kernel/patch.c
+++ /dev/null
@@ -1,237 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Instruction-patching support.
- *
- * Copyright (C) 2003 Hewlett-Packard Co
- *	David Mosberger-Tang <davidm@hpl.hp.com>
- */
-#include <linux/init.h>
-#include <linux/string.h>
-
-#include <asm/patch.h>
-#include <asm/processor.h>
-#include <asm/sections.h>
-#include <asm/unistd.h>
-
-/*
- * This was adapted from code written by Tony Luck:
- *
- * The 64-bit value in a "movl reg=value" is scattered between the two words of the bundle
- * like this:
- *
- * 6  6         5         4         3         2         1
- * 3210987654321098765432109876543210987654321098765432109876543210
- * ABBBBBBBBBBBBBBBBBBBBBBBCCCCCCCCCCCCCCCCCCDEEEEEFFFFFFFFFGGGGGGG
- *
- * CCCCCCCCCCCCCCCCCCxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
- * xxxxAFFFFFFFFFEEEEEDxGGGGGGGxxxxxxxxxxxxxBBBBBBBBBBBBBBBBBBBBBBB
- */
-static u64
-get_imm64 (u64 insn_addr)
-{
-	u64 *p = (u64 *) (insn_addr & -16);	/* mask out slot number */
-
-	return ( (p[1] & 0x0800000000000000UL) << 4)  | /*A*/
-		((p[1] & 0x00000000007fffffUL) << 40) | /*B*/
-		((p[0] & 0xffffc00000000000UL) >> 24) | /*C*/
-		((p[1] & 0x0000100000000000UL) >> 23) | /*D*/
-		((p[1] & 0x0003e00000000000UL) >> 29) | /*E*/
-		((p[1] & 0x07fc000000000000UL) >> 43) | /*F*/
-		((p[1] & 0x000007f000000000UL) >> 36);  /*G*/
-}
-
-/* Patch instruction with "val" where "mask" has 1 bits. */
-void
-ia64_patch (u64 insn_addr, u64 mask, u64 val)
-{
-	u64 m0, m1, v0, v1, b0, b1, *b = (u64 *) (insn_addr & -16);
-#	define insn_mask ((1UL << 41) - 1)
-	unsigned long shift;
-
-	b0 = b[0]; b1 = b[1];
-	shift = 5 + 41 * (insn_addr % 16); /* 5 bits of template, then 3 x 41-bit instructions */
-	if (shift >= 64) {
-		m1 = mask << (shift - 64);
-		v1 = val << (shift - 64);
-	} else {
-		m0 = mask << shift; m1 = mask >> (64 - shift);
-		v0 = val  << shift; v1 = val >> (64 - shift);
-		b[0] = (b0 & ~m0) | (v0 & m0);
-	}
-	b[1] = (b1 & ~m1) | (v1 & m1);
-}
-
-void
-ia64_patch_imm64 (u64 insn_addr, u64 val)
-{
-	/* The assembler may generate offset pointing to either slot 1
-	   or slot 2 for a long (2-slot) instruction, occupying slots 1
-	   and 2.  */
-  	insn_addr &= -16UL;
-	ia64_patch(insn_addr + 2,
-		   0x01fffefe000UL, (  ((val & 0x8000000000000000UL) >> 27) /* bit 63 -> 36 */
-				     | ((val & 0x0000000000200000UL) <<  0) /* bit 21 -> 21 */
-				     | ((val & 0x00000000001f0000UL) <<  6) /* bit 16 -> 22 */
-				     | ((val & 0x000000000000ff80UL) << 20) /* bit  7 -> 27 */
-				     | ((val & 0x000000000000007fUL) << 13) /* bit  0 -> 13 */));
-	ia64_patch(insn_addr + 1, 0x1ffffffffffUL, val >> 22);
-}
-
-void
-ia64_patch_imm60 (u64 insn_addr, u64 val)
-{
-	/* The assembler may generate offset pointing to either slot 1
-	   or slot 2 for a long (2-slot) instruction, occupying slots 1
-	   and 2.  */
-  	insn_addr &= -16UL;
-	ia64_patch(insn_addr + 2,
-		   0x011ffffe000UL, (  ((val & 0x0800000000000000UL) >> 23) /* bit 59 -> 36 */
-				     | ((val & 0x00000000000fffffUL) << 13) /* bit  0 -> 13 */));
-	ia64_patch(insn_addr + 1, 0x1fffffffffcUL, val >> 18);
-}
-
-/*
- * We need sometimes to load the physical address of a kernel
- * object.  Often we can convert the virtual address to physical
- * at execution time, but sometimes (either for performance reasons
- * or during error recovery) we cannot to this.  Patch the marked
- * bundles to load the physical address.
- */
-void __init
-ia64_patch_vtop (unsigned long start, unsigned long end)
-{
-	s32 *offp = (s32 *) start;
-	u64 ip;
-
-	while (offp < (s32 *) end) {
-		ip = (u64) offp + *offp;
-
-		/* replace virtual address with corresponding physical address: */
-		ia64_patch_imm64(ip, ia64_tpa(get_imm64(ip)));
-		ia64_fc((void *) ip);
-		++offp;
-	}
-	ia64_sync_i();
-	ia64_srlz_i();
-}
-
-/*
- * Disable the RSE workaround by turning the conditional branch
- * that we tagged in each place the workaround was used into an
- * unconditional branch.
- */
-void __init
-ia64_patch_rse (unsigned long start, unsigned long end)
-{
-	s32 *offp = (s32 *) start;
-	u64 ip, *b;
-
-	while (offp < (s32 *) end) {
-		ip = (u64) offp + *offp;
-
-		b = (u64 *)(ip & -16);
-		b[1] &= ~0xf800000L;
-		ia64_fc((void *) ip);
-		++offp;
-	}
-	ia64_sync_i();
-	ia64_srlz_i();
-}
-
-void __init
-ia64_patch_mckinley_e9 (unsigned long start, unsigned long end)
-{
-	static int first_time = 1;
-	int need_workaround;
-	s32 *offp = (s32 *) start;
-	u64 *wp;
-
-	need_workaround = (local_cpu_data->family == 0x1f && local_cpu_data->model == 0);
-
-	if (first_time) {
-		first_time = 0;
-		if (need_workaround)
-			printk(KERN_INFO "Leaving McKinley Errata 9 workaround enabled\n");
-	}
-	if (need_workaround)
-		return;
-
-	while (offp < (s32 *) end) {
-		wp = (u64 *) ia64_imva((char *) offp + *offp);
-		wp[0] = 0x0000000100000011UL; /* nop.m 0; nop.i 0; br.ret.sptk.many b6 */
-		wp[1] = 0x0084006880000200UL;
-		wp[2] = 0x0000000100000000UL; /* nop.m 0; nop.i 0; nop.i 0 */
-		wp[3] = 0x0004000000000200UL;
-		ia64_fc(wp); ia64_fc(wp + 2);
-		++offp;
-	}
-	ia64_sync_i();
-	ia64_srlz_i();
-}
-
-static void __init
-patch_fsyscall_table (unsigned long start, unsigned long end)
-{
-	extern unsigned long fsyscall_table[NR_syscalls];
-	s32 *offp = (s32 *) start;
-	u64 ip;
-
-	while (offp < (s32 *) end) {
-		ip = (u64) ia64_imva((char *) offp + *offp);
-		ia64_patch_imm64(ip, (u64) fsyscall_table);
-		ia64_fc((void *) ip);
-		++offp;
-	}
-	ia64_sync_i();
-	ia64_srlz_i();
-}
-
-static void __init
-patch_brl_fsys_bubble_down (unsigned long start, unsigned long end)
-{
-	extern char fsys_bubble_down[];
-	s32 *offp = (s32 *) start;
-	u64 ip;
-
-	while (offp < (s32 *) end) {
-		ip = (u64) offp + *offp;
-		ia64_patch_imm60((u64) ia64_imva((void *) ip),
-				 (u64) (fsys_bubble_down - (ip & -16)) / 16);
-		ia64_fc((void *) ip);
-		++offp;
-	}
-	ia64_sync_i();
-	ia64_srlz_i();
-}
-
-void __init
-ia64_patch_gate (void)
-{
-#	define START(name)	((unsigned long) __start_gate_##name##_patchlist)
-#	define END(name)	((unsigned long)__end_gate_##name##_patchlist)
-
-	patch_fsyscall_table(START(fsyscall), END(fsyscall));
-	patch_brl_fsys_bubble_down(START(brl_fsys_bubble_down), END(brl_fsys_bubble_down));
-	ia64_patch_vtop(START(vtop), END(vtop));
-	ia64_patch_mckinley_e9(START(mckinley_e9), END(mckinley_e9));
-}
-
-void ia64_patch_phys_stack_reg(unsigned long val)
-{
-	s32 * offp = (s32 *) __start___phys_stack_reg_patchlist;
-	s32 * end = (s32 *) __end___phys_stack_reg_patchlist;
-	u64 ip, mask, imm;
-
-	/* see instruction format A4: adds r1 = imm13, r3 */
-	mask = (0x3fUL << 27) | (0x7f << 13);
-	imm = (((val >> 7) & 0x3f) << 27) | (val & 0x7f) << 13;
-
-	while (offp < end) {
-		ip = (u64) offp + *offp;
-		ia64_patch(ip, mask, imm);
-		ia64_fc((void *)ip);
-		++offp;
-	}
-	ia64_sync_i();
-	ia64_srlz_i();
-}