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powerpc: use memblock functions returning virtual address

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Since only the virtual address of allocated blocks is used, lets use
functions returning directly virtual address.

Those functions have the advantage of also zeroing the block.

[rppt@linux.ibm.com: powerpc: remove duplicated alloc_stack() function]
  Link: http://lkml.kernel.org/r/20190226064032.GA5873@rapoport-lnx
[rppt@linux.ibm.com: updated error message in alloc_stack() to be more verbose]
[rppt@linux.ibm.com: convereted several additional call sites ]
Link: http://lkml.kernel.org/r/1548057848-15136-3-git-send-email-rppt@linux.ibm.com
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Catalin Marinas <catalin.marinas@arm.com>
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: 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>
This commit is contained in:
Christophe Leroy 2019-03-11 23:29:00 -07:00 committed by Linus Torvalds
parent fb054d0d91
commit 1269f7b83f
3 changed files with 10 additions and 4 deletions
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3
arch/powerpc/kernel/dt_cpu_ftrs.c
View File

@ -810,7 +810,6 @@ static int __init process_cpufeatures_node(unsigned long node,
int len; int len;
f = &dt_cpu_features[i]; f = &dt_cpu_features[i];
memset(f, 0, sizeof(struct dt_cpu_feature));
f->node = node; f->node = node;
@ -1005,7 +1004,7 @@ static int __init dt_cpu_ftrs_scan_callback(unsigned long node, const char
/* Count and allocate space for cpu features */ /* Count and allocate space for cpu features */
of_scan_flat_dt_subnodes(node, count_cpufeatures_subnodes, of_scan_flat_dt_subnodes(node, count_cpufeatures_subnodes,
&nr_dt_cpu_features); &nr_dt_cpu_features);
dt_cpu_features = __va(memblock_phys_alloc(sizeof(struct dt_cpu_feature) * nr_dt_cpu_features, PAGE_SIZE)); dt_cpu_features = memblock_alloc(sizeof(struct dt_cpu_feature) * nr_dt_cpu_features, PAGE_SIZE);
cpufeatures_setup_start(isa); cpufeatures_setup_start(isa);

6
arch/powerpc/kernel/paca.c
View File

@ -196,7 +196,11 @@ void __init allocate_paca_ptrs(void)
paca_nr_cpu_ids = nr_cpu_ids; paca_nr_cpu_ids = nr_cpu_ids;
paca_ptrs_size = sizeof(struct paca_struct *) * nr_cpu_ids; paca_ptrs_size = sizeof(struct paca_struct *) * nr_cpu_ids;
paca_ptrs = __va(memblock_phys_alloc(paca_ptrs_size, SMP_CACHE_BYTES)); paca_ptrs = memblock_alloc_raw(paca_ptrs_size, SMP_CACHE_BYTES);
if (!paca_ptrs)
panic("Failed to allocate %d bytes for paca pointers\n",
paca_ptrs_size);
memset(paca_ptrs, 0x88, paca_ptrs_size); memset(paca_ptrs, 0x88, paca_ptrs_size);
} }

5
arch/powerpc/kernel/prom.c
View File

@ -126,7 +126,10 @@ static void __init move_device_tree(void)
if ((memory_limit && (start + size) > PHYSICAL_START + memory_limit) || if ((memory_limit && (start + size) > PHYSICAL_START + memory_limit) ||
!memblock_is_memory(start + size - 1) || !memblock_is_memory(start + size - 1) ||
overlaps_crashkernel(start, size) || overlaps_initrd(start, size)) { overlaps_crashkernel(start, size) || overlaps_initrd(start, size)) {
p = __va(memblock_phys_alloc(size, PAGE_SIZE)); p = memblock_alloc_raw(size, PAGE_SIZE);
if (!p)
panic("Failed to allocate %lu bytes to move device tree\n",
size);
memcpy(p, initial_boot_params, size); memcpy(p, initial_boot_params, size);
initial_boot_params = p; initial_boot_params = p;
DBG("Moved device tree to 0x%px\n", p); DBG("Moved device tree to 0x%px\n", p);