X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=arch%2Fia64%2Fkernel%2Fpatch.c;h=e796e29f8e156df255c93f85fa5cd8f7a882dace;hb=a0776ec8e97bf109e7d973d09fc3e1814eb32bfb;hp=bc11bb096f584735fe8220c3f30c9063e9b4a8c2;hpb=1b9a3917366028cc451a98dd22e3bcd537d4e5c1;p=powerpc.git

diff --git a/arch/ia64/kernel/patch.c b/arch/ia64/kernel/patch.c
index bc11bb096f..e796e29f8e 100644
--- a/arch/ia64/kernel/patch.c
+++ b/arch/ia64/kernel/patch.c
@@ -195,3 +195,23 @@ ia64_patch_gate (void)
 	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(ip);
+		++offp;
+	}
+	ia64_sync_i();
+	ia64_srlz_i();
+}