From: Pavel Tatashin <pasha.tatashin@soleen.com>
To: pasha.tatashin@soleen.com, jmorris@namei.org, sashal@kernel.org,
ebiederm@xmission.com, kexec@lists.infradead.org,
linux-kernel@vger.kernel.org, corbet@lwn.net,
catalin.marinas@arm.com, will@kernel.org,
linux-arm-kernel@lists.infradead.org, marc.zyngier@arm.com,
james.morse@arm.com, vladimir.murzin@arm.com,
matthias.bgg@gmail.com, bhsharma@redhat.com, linux-mm@kvack.org,
mark.rutland@arm.com
Subject: [PATCH v3 02/17] arm64, hibernate: use get_safe_page directly
Date: Wed, 21 Aug 2019 14:31:49 -0400 [thread overview]
Message-ID: <20190821183204.23576-3-pasha.tatashin@soleen.com> (raw)
In-Reply-To: <20190821183204.23576-1-pasha.tatashin@soleen.com>
create_safe_exec_page is a local function that uses the
get_safe_page() to allocate page table and pages and one pages
that is getting mapped.
Remove the allocator related arguments, and use get_safe_page
directly, as it is done in other local functions in this
file.
Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
---
arch/arm64/kernel/hibernate.c | 17 +++++++----------
1 file changed, 7 insertions(+), 10 deletions(-)
diff --git a/arch/arm64/kernel/hibernate.c b/arch/arm64/kernel/hibernate.c
index 9341fcc6e809..4bb4d17a6a7c 100644
--- a/arch/arm64/kernel/hibernate.c
+++ b/arch/arm64/kernel/hibernate.c
@@ -196,16 +196,14 @@ EXPORT_SYMBOL(arch_hibernation_header_restore);
*/
static int create_safe_exec_page(void *src_start, size_t length,
unsigned long dst_addr,
- phys_addr_t *phys_dst_addr,
- void *(*allocator)(gfp_t mask),
- gfp_t mask)
+ phys_addr_t *phys_dst_addr)
{
int rc = 0;
pgd_t *pgdp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
- unsigned long dst = (unsigned long)allocator(mask);
+ unsigned long dst = get_safe_page(GFP_ATOMIC);
if (!dst) {
rc = -ENOMEM;
@@ -215,9 +213,9 @@ static int create_safe_exec_page(void *src_start, size_t length,
memcpy((void *)dst, src_start, length);
__flush_icache_range(dst, dst + length);
- pgdp = pgd_offset_raw(allocator(mask), dst_addr);
+ pgdp = pgd_offset_raw((void *)get_safe_page(GFP_ATOMIC), dst_addr);
if (pgd_none(READ_ONCE(*pgdp))) {
- pudp = allocator(mask);
+ pudp = (void *)get_safe_page(GFP_ATOMIC);
if (!pudp) {
rc = -ENOMEM;
goto out;
@@ -227,7 +225,7 @@ static int create_safe_exec_page(void *src_start, size_t length,
pudp = pud_offset(pgdp, dst_addr);
if (pud_none(READ_ONCE(*pudp))) {
- pmdp = allocator(mask);
+ pmdp = (void *)get_safe_page(GFP_ATOMIC);
if (!pmdp) {
rc = -ENOMEM;
goto out;
@@ -237,7 +235,7 @@ static int create_safe_exec_page(void *src_start, size_t length,
pmdp = pmd_offset(pudp, dst_addr);
if (pmd_none(READ_ONCE(*pmdp))) {
- ptep = allocator(mask);
+ ptep = (void *)get_safe_page(GFP_ATOMIC);
if (!ptep) {
rc = -ENOMEM;
goto out;
@@ -523,8 +521,7 @@ int swsusp_arch_resume(void)
*/
rc = create_safe_exec_page(__hibernate_exit_text_start, exit_size,
(unsigned long)hibernate_exit,
- &phys_hibernate_exit,
- (void *)get_safe_page, GFP_ATOMIC);
+ &phys_hibernate_exit);
if (rc) {
pr_err("Failed to create safe executable page for hibernate_exit code.\n");
goto out;
--
2.23.0
next prev parent reply other threads:[~2019-08-21 18:33 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-21 18:31 [PATCH v3 00/17] arm64: MMU enabled kexec relocation Pavel Tatashin
2019-08-21 18:31 ` [PATCH v3 01/17] kexec: quiet down kexec reboot Pavel Tatashin
2019-09-06 15:17 ` James Morse
2019-09-06 15:35 ` Pavel Tatashin
2019-08-21 18:31 ` Pavel Tatashin [this message]
2019-09-06 15:17 ` [PATCH v3 02/17] arm64, hibernate: use get_safe_page directly James Morse
2019-09-06 15:39 ` Pavel Tatashin
2019-08-21 18:31 ` [PATCH v3 03/17] arm64, hibernate: remove gotos in create_safe_exec_page Pavel Tatashin
2019-09-06 15:17 ` James Morse
2019-09-06 15:41 ` Pavel Tatashin
2019-08-21 18:31 ` [PATCH v3 04/17] arm64, hibernate: rename dst to page " Pavel Tatashin
2019-09-06 15:17 ` James Morse
2019-09-06 15:41 ` Pavel Tatashin
2019-08-21 18:31 ` [PATCH v3 05/17] arm64, hibernate: check pgd table allocation Pavel Tatashin
2019-09-06 15:17 ` James Morse
2019-09-06 15:44 ` Pavel Tatashin
2019-08-21 18:31 ` [PATCH v3 06/17] arm64, hibernate: add trans_pgd public functions Pavel Tatashin
2019-09-06 15:18 ` James Morse
2019-09-06 16:00 ` Pavel Tatashin
2019-10-11 18:16 ` James Morse
2019-08-21 18:31 ` [PATCH v3 07/17] arm64, hibernate: move page handling function to new trans_pgd.c Pavel Tatashin
2019-09-06 15:18 ` James Morse
2019-09-06 17:41 ` Pavel Tatashin
2019-08-21 18:31 ` [PATCH v3 08/17] arm64, trans_pgd: make trans_pgd_map_page generic Pavel Tatashin
2019-09-06 15:20 ` James Morse
2019-09-06 18:58 ` Pavel Tatashin
2019-10-11 18:15 ` James Morse
2019-08-21 18:31 ` [PATCH v3 09/17] arm64, trans_pgd: add trans_pgd_create_empty Pavel Tatashin
2019-09-06 15:20 ` James Morse
2019-09-06 19:00 ` Pavel Tatashin
2019-08-21 18:31 ` [PATCH v3 10/17] arm64, trans_pgd: adjust trans_pgd_create_copy interface Pavel Tatashin
2019-09-06 15:20 ` James Morse
2019-09-06 19:03 ` Pavel Tatashin
2019-08-21 18:31 ` [PATCH v3 11/17] arm64, trans_pgd: add PUD_SECT_RDONLY Pavel Tatashin
2019-09-06 15:21 ` James Morse
2019-09-06 19:04 ` Pavel Tatashin
2019-08-21 18:31 ` [PATCH v3 12/17] arm64, trans_pgd: complete generalization of trans_pgds Pavel Tatashin
2019-09-06 15:23 ` James Morse
2019-09-06 19:06 ` Pavel Tatashin
2019-08-21 18:32 ` [PATCH v3 13/17] kexec: add machine_kexec_post_load() Pavel Tatashin
2019-08-21 18:32 ` [PATCH v3 14/17] arm64, kexec: move relocation function setup and clean up Pavel Tatashin
2019-08-21 18:32 ` [PATCH v3 15/17] arm64, kexec: add expandable argument to relocation function Pavel Tatashin
2019-08-21 18:32 ` [PATCH v3 16/17] arm64, kexec: configure trans_pgd page table for kexec Pavel Tatashin
2019-08-21 18:32 ` [PATCH v3 17/17] arm64, kexec: enable MMU during kexec relocation Pavel Tatashin
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