From 387e220a2e5e630794e1f5219ed6f11e56271c21 Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Thu, 2 Dec 2021 00:41:52 +1000 Subject: powerpc/64s: Move hash MMU support code under CONFIG_PPC_64S_HASH_MMU Compiling out hash support code when CONFIG_PPC_64S_HASH_MMU=n saves 128kB kernel image size (90kB text) on powernv_defconfig minus KVM, 350kB on pseries_defconfig minus KVM, 40kB on a tiny config. Signed-off-by: Nicholas Piggin [mpe: Fixup defined(ARCH_HAS_MEMREMAP_COMPAT_ALIGN), which needs CONFIG. Fix radix_enabled() use in setup_initial_memory_limit(). Add some stubs to reduce number of ifdefs.] Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20211201144153.2456614-18-npiggin@gmail.com --- arch/powerpc/xmon/xmon.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'arch/powerpc/xmon') diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index 83100c6524cc..0c65dc01c325 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -1159,7 +1159,7 @@ cmds(struct pt_regs *excp) case 'P': show_tasks(); break; -#ifdef CONFIG_PPC_BOOK3S +#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_PPC_64S_HASH_MMU) case 'u': dump_segments(); break; @@ -2614,7 +2614,7 @@ static void dump_tracing(void) static void dump_one_paca(int cpu) { struct paca_struct *p; -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU int i = 0; #endif @@ -2656,6 +2656,7 @@ static void dump_one_paca(int cpu) DUMP(p, cpu_start, "%#-*x"); DUMP(p, kexec_state, "%#-*x"); #ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU if (!early_radix_enabled()) { for (i = 0; i < SLB_NUM_BOLTED; i++) { u64 esid, vsid; @@ -2683,6 +2684,7 @@ static void dump_one_paca(int cpu) 22, "slb_cache", i, p->slb_cache[i]); } } +#endif DUMP(p, rfi_flush_fallback_area, "%-*px"); #endif @@ -3746,7 +3748,7 @@ static void xmon_print_symbol(unsigned long address, const char *mid, printf("%s", after); } -#ifdef CONFIG_PPC_BOOK3S_64 +#ifdef CONFIG_PPC_64S_HASH_MMU void dump_segments(void) { int i; -- cgit v1.2.3