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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 v6 12/17] arm64: trans_pgd: pass NULL instead of init_mm to *_populate functions
Date: Fri,  4 Oct 2019 14:52:29 -0400	[thread overview]
Message-ID: <20191004185234.31471-13-pasha.tatashin@soleen.com> (raw)
In-Reply-To: <20191004185234.31471-1-pasha.tatashin@soleen.com>

trans_pgd_* should be independent from mm context because the tables that
are created by this code are used when there are no mm context around, as
it is between kernels. Simply replace mm_init's with NULL.

Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
---
 arch/arm64/mm/trans_pgd.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/mm/trans_pgd.c b/arch/arm64/mm/trans_pgd.c
index df3a10d36f62..2b02a646101f 100644
--- a/arch/arm64/mm/trans_pgd.c
+++ b/arch/arm64/mm/trans_pgd.c
@@ -67,7 +67,7 @@ static int copy_pte(struct trans_pgd_info *info, pmd_t *dst_pmdp,
 	dst_ptep = trans_alloc(info);
 	if (!dst_ptep)
 		return -ENOMEM;
-	pmd_populate_kernel(&init_mm, dst_pmdp, dst_ptep);
+	pmd_populate_kernel(NULL, dst_pmdp, dst_ptep);
 	dst_ptep = pte_offset_kernel(dst_pmdp, start);
 
 	src_ptep = pte_offset_kernel(src_pmdp, start);
@@ -90,7 +90,7 @@ static int copy_pmd(struct trans_pgd_info *info, pud_t *dst_pudp,
 		dst_pmdp = trans_alloc(info);
 		if (!dst_pmdp)
 			return -ENOMEM;
-		pud_populate(&init_mm, dst_pudp, dst_pmdp);
+		pud_populate(NULL, dst_pudp, dst_pmdp);
 	}
 	dst_pmdp = pmd_offset(dst_pudp, start);
 
@@ -126,7 +126,7 @@ static int copy_pud(struct trans_pgd_info *info, pgd_t *dst_pgdp,
 		dst_pudp = trans_alloc(info);
 		if (!dst_pudp)
 			return -ENOMEM;
-		pgd_populate(&init_mm, dst_pgdp, dst_pudp);
+		pgd_populate(NULL, dst_pgdp, dst_pudp);
 	}
 	dst_pudp = pud_offset(dst_pgdp, start);
 
@@ -218,7 +218,7 @@ int trans_pgd_map_page(struct trans_pgd_info *info, pgd_t *trans_pgd,
 		pudp = trans_alloc(info);
 		if (!pudp)
 			return -ENOMEM;
-		pgd_populate(&init_mm, pgdp, pudp);
+		pgd_populate(NULL, pgdp, pudp);
 	}
 
 	pudp = pud_offset(pgdp, dst_addr);
@@ -226,7 +226,7 @@ int trans_pgd_map_page(struct trans_pgd_info *info, pgd_t *trans_pgd,
 		pmdp = trans_alloc(info);
 		if (!pmdp)
 			return -ENOMEM;
-		pud_populate(&init_mm, pudp, pmdp);
+		pud_populate(NULL, pudp, pmdp);
 	}
 
 	pmdp = pmd_offset(pudp, dst_addr);
@@ -234,7 +234,7 @@ int trans_pgd_map_page(struct trans_pgd_info *info, pgd_t *trans_pgd,
 		ptep = trans_alloc(info);
 		if (!ptep)
 			return -ENOMEM;
-		pmd_populate_kernel(&init_mm, pmdp, ptep);
+		pmd_populate_kernel(NULL, pmdp, ptep);
 	}
 
 	ptep = pte_offset_kernel(pmdp, dst_addr);
-- 
2.23.0


  parent reply	other threads:[~2019-10-04 18:53 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-04 18:52 [PATCH v6 00/17] arm64: MMU enabled kexec relocation Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 01/17] kexec: quiet down kexec reboot Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 02/17] arm64: hibernate: pass the allocated pgdp to ttbr0 Pavel Tatashin
2019-10-11 18:17   ` James Morse
2019-10-14 14:11     ` Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 03/17] arm64: hibernate: check pgd table allocation Pavel Tatashin
2019-10-11 18:17   ` James Morse
2019-10-14 14:51     ` Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 04/17] arm64: hibernate: use get_safe_page directly Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 05/17] arm64: hibernate: remove gotos as they are not needed Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 06/17] arm64: hibernate: rename dst to page in create_safe_exec_page Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 07/17] arm64: hibernate: add PUD_SECT_RDONLY Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 08/17] arm64: hibernate: add trans_pgd public functions Pavel Tatashin
2019-10-11 18:18   ` James Morse
2019-10-14 15:34     ` Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 09/17] arm64: hibernate: move page handling function to new trans_pgd.c Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 10/17] arm64: trans_pgd: make trans_pgd_map_page generic Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 11/17] arm64: trans_pgd: pass allocator trans_pgd_create_copy Pavel Tatashin
2019-10-04 18:52 ` Pavel Tatashin [this message]
2019-10-04 18:52 ` [PATCH v6 13/17] kexec: add machine_kexec_post_load() Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 14/17] arm64: kexec: move relocation function setup and clean up Pavel Tatashin
2019-10-11 18:19   ` James Morse
2019-10-14 19:29     ` Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 15/17] arm64: kexec: add expandable argument to relocation function Pavel Tatashin
2019-10-11 18:19   ` James Morse
2019-10-14 23:35     ` Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 16/17] arm64: kexec: configure trans_pgd page table for kexec Pavel Tatashin
2019-10-11 18:21   ` James Morse
2019-10-15  2:12     ` Pavel Tatashin
2019-10-04 18:52 ` [PATCH v6 17/17] arm64: kexec: enable MMU during kexec relocation Pavel Tatashin

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