memblock: drop memblock_alloc_base()

The memblock_alloc_base() function tries to allocate a memory up to the
limit specified by its max_addr parameter and panics if the allocation
fails.  Replace its usage with memblock_phys_alloc_range() and make the
callers check the return value and panic in case of error.

Link: http://lkml.kernel.org/r/1548057848-15136-10-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>		[powerpc]
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Guo Ren <ren_guo@c-sky.com>				[c-sky]
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Juergen Gross <jgross@suse.com>			[Xen]
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/powerpc/kernel/rtas.c

@@ -1187,7 +1187,11 @@ void __init rtas_initialize(void)
 		ibm_suspend_me_token = rtas_token("ibm,suspend-me");
 	}
 #endif
-	rtas_rmo_buf = memblock_alloc_base(RTAS_RMOBUF_MAX, PAGE_SIZE, rtas_region);
+	rtas_rmo_buf = memblock_phys_alloc_range(RTAS_RMOBUF_MAX, PAGE_SIZE,
+						 0, rtas_region);
+	if (!rtas_rmo_buf)
+		panic("ERROR: RTAS: Failed to allocate %lx bytes below %pa\n",
+		      PAGE_SIZE, &rtas_region);
 
 #ifdef CONFIG_RTAS_ERROR_LOGGING
 	rtas_last_error_token = rtas_token("rtas-last-error");

arch/powerpc/mm/hash_utils_64.c

@@ -882,8 +882,12 @@ static void __init htab_initialize(void)
 		}
 #endif /* CONFIG_PPC_CELL */
 
-		table = memblock_alloc_base(htab_size_bytes, htab_size_bytes,
+		table = memblock_phys_alloc_range(htab_size_bytes,
-					    limit);
+						  htab_size_bytes,
+						  0, limit);
+		if (!table)
+			panic("ERROR: Failed to allocate %pa bytes below %pa\n",
+			      &htab_size_bytes, &limit);
 
 		DBG("Hash table allocated at %lx, size: %lx\n", table,
 		    htab_size_bytes);

arch/s390/kernel/smp.c

@@ -656,7 +656,11 @@ void __init smp_save_dump_cpus(void)
 		/* No previous system present, normal boot. */
 		return;
 	/* Allocate a page as dumping area for the store status sigps */
-	page = memblock_alloc_base(PAGE_SIZE, PAGE_SIZE, 1UL << 31);
+	page = memblock_phys_alloc_range(PAGE_SIZE, PAGE_SIZE, 0, 1UL << 31);
+	if (!page)
+		panic("ERROR: Failed to allocate %x bytes below %lx\n",
+		      PAGE_SIZE, 1UL << 31);
+
 	/* Set multi-threading state to the previous system. */
 	pcpu_set_smt(sclp.mtid_prev);
 	boot_cpu_addr = stap();

drivers/macintosh/smu.c

@@ -485,7 +485,7 @@ int __init smu_init (void)
 	 * SMU based G5s need some memory below 2Gb. Thankfully this is
 	 * called at a time where memblock is still available.
 	 */
-	smu_cmdbuf_abs = memblock_alloc_base(4096, 4096, 0x80000000UL);
+	smu_cmdbuf_abs = memblock_phys_alloc_range(4096, 4096, 0, 0x80000000UL);
 	if (smu_cmdbuf_abs == 0) {
 		printk(KERN_ERR "SMU: Command buffer allocation failed !\n");
 		ret = -EINVAL;

include/linux/memblock.h

@@ -450,8 +450,6 @@ static inline bool memblock_bottom_up(void)
 	return memblock.bottom_up;
 }
 
-phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align,
-				phys_addr_t max_addr);
 phys_addr_t memblock_phys_mem_size(void);
 phys_addr_t memblock_reserved_size(void);
 phys_addr_t memblock_mem_size(unsigned long limit_pfn);

mm/memblock.c

@@ -1306,20 +1306,6 @@ again:
 	return ret;
 }
 
-phys_addr_t __init memblock_alloc_base(phys_addr_t size, phys_addr_t align, phys_addr_t max_addr)
-{
-	phys_addr_t alloc;
-
-	alloc = memblock_alloc_range_nid(size, align, 0, max_addr, NUMA_NO_NODE,
-					MEMBLOCK_NONE);
-
-	if (alloc == 0)
-		panic("ERROR: Failed to allocate %pa bytes below %pa.\n",
-		      &size, &max_addr);
-
-	return alloc;
-}
-
 phys_addr_t __init memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid)
 {
 	phys_addr_t res = memblock_phys_alloc_nid(size, align, nid);