Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (36 commits)
  MIPS: Calculate proper ebase value for 64-bit kernels
  MIPS: Alchemy: DB1200: Remove custom wait implementation
  MIPS: Big Sur: Make defconfig more useful.
  MIPS: Fix __vmalloc() etc. on MIPS for non-GPL modules
  MIPS: Sibyte: Fix M3 TLB exception handler workaround.
  MIPS: BCM63xx: Fix build failure in board_bcm963xx.c
  MIPS: uasm: Add OR instruction.
  MIPS: Sibyte: Apply M3 workaround only on affected chip types and versions.
  MIPS: BCM63xx: Initialize gpio_out_low & out_high to current value at boot.
  MIPS: BCM63xx: Register SSB SPROM fallback in board's first stage callback
  MIPS: BCM63xx: Fix typo in cpu-feature-overrides file.
  MIPS: BCM63xx: Add support for second uart.
  MIPS: BCM63xx: Fix double gpio registration.
  MIPS: BCM63xx: Add DWVS0 board
  MIPS: BCM63xx: Add the RTA1025W-16 BCM6348-based board to suppported boards.
  MIPS: BCM63xx: Fix BCM6338 and BCM6345 gpio count
  MIPS: libgcc.h: Checkpatch cleanup
  MIPS: Loongson-2F: Flush the branch target history in BTB and RAS
  MIPS: Move signal trampolines off of the stack.
  MIPS: Preliminary VDSO
  ...

1 files changed, 6 insertions, 20 deletions

diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c
index bb277e82d42..2c5df818c65 100644
--- a/arch/mips/kernel/signal_n32.c
+++ b/arch/mips/kernel/signal_n32.c
@@ -39,13 +39,13 @@
 #include <asm/fpu.h>
 #include <asm/cpu-features.h>
 #include <asm/war.h>
+#include <asm/vdso.h>
 
 #include "signal-common.h"
 
 /*
  * Including <asm/unistd.h> would give use the 64-bit syscall numbers ...
  */
-#define __NR_N32_rt_sigreturn		6211
 #define __NR_N32_restart_syscall	6214
 
 extern int setup_sigcontext(struct pt_regs *, struct sigcontext __user *);
@@ -67,27 +67,13 @@ struct ucontextn32 {
 	compat_sigset_t     uc_sigmask;   /* mask last for extensibility */
 };
 
-#if ICACHE_REFILLS_WORKAROUND_WAR == 0
-
-struct rt_sigframe_n32 {
-	u32 rs_ass[4];			/* argument save space for o32 */
-	u32 rs_code[2];			/* signal trampoline */
-	struct compat_siginfo rs_info;
-	struct ucontextn32 rs_uc;
-};
-
-#else  /* ICACHE_REFILLS_WORKAROUND_WAR */
-
 struct rt_sigframe_n32 {
 	u32 rs_ass[4];			/* argument save space for o32 */
-	u32 rs_pad[2];
+	u32 rs_pad[2];			/* Was: signal trampoline */
 	struct compat_siginfo rs_info;
 	struct ucontextn32 rs_uc;
-	u32 rs_code[8] ____cacheline_aligned;		/* signal trampoline */
 };
 
-#endif	/* !ICACHE_REFILLS_WORKAROUND_WAR */
-
 extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
 
 asmlinkage int sysn32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
@@ -173,7 +159,7 @@ badframe:
 	force_sig(SIGSEGV, current);
 }
 
-static int setup_rt_frame_n32(struct k_sigaction * ka,
+static int setup_rt_frame_n32(void *sig_return, struct k_sigaction *ka,
 	struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info)
 {
 	struct rt_sigframe_n32 __user *frame;
@@ -184,8 +170,6 @@ static int setup_rt_frame_n32(struct k_sigaction * ka,
 	if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
 		goto give_sigsegv;
 
-	install_sigtramp(frame->rs_code, __NR_N32_rt_sigreturn);
-
 	/* Create siginfo.  */
 	err |= copy_siginfo_to_user32(&frame->rs_info, info);
 
@@ -219,7 +203,7 @@ static int setup_rt_frame_n32(struct k_sigaction * ka,
 	regs->regs[ 5] = (unsigned long) &frame->rs_info;
 	regs->regs[ 6] = (unsigned long) &frame->rs_uc;
 	regs->regs[29] = (unsigned long) frame;
-	regs->regs[31] = (unsigned long) frame->rs_code;
+	regs->regs[31] = (unsigned long) sig_return;
 	regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler;
 
 	DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n",
@@ -235,5 +219,7 @@ give_sigsegv:
 
 struct mips_abi mips_abi_n32 = {
 	.setup_rt_frame	= setup_rt_frame_n32,
+	.rt_signal_return_offset =
+		offsetof(struct mips_vdso, n32_rt_signal_trampoline),
 	.restart	= __NR_N32_restart_syscall
 };