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, maz@kernel.org,
james.morse@arm.com, vladimir.murzin@arm.com,
matthias.bgg@gmail.com, linux-mm@kvack.org, mark.rutland@arm.com,
steve.capper@arm.com, rfontana@redhat.com, tglx@linutronix.de,
selindag@gmail.com, tyhicks@linux.microsoft.com,
kernelfans@gmail.com, akpm@linux-foundation.org,
madvenka@linux.microsoft.com
Subject: [PATCH v16 13/15] arm64: kexec: remove the pre-kexec PoC maintenance
Date: Mon, 2 Aug 2021 17:54:06 -0400 [thread overview]
Message-ID: <20210802215408.804942-14-pasha.tatashin@soleen.com> (raw)
In-Reply-To: <20210802215408.804942-1-pasha.tatashin@soleen.com>
Now that kexec does its relocations with the MMU enabled, we no longer
need to clean the relocation data to the PoC.
Suggested-by: James Morse <james.morse@arm.com>
Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
---
arch/arm64/kernel/machine_kexec.c | 43 -------------------------------
1 file changed, 43 deletions(-)
diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c
index b43195a7fcb6..b1856f34cc51 100644
--- a/arch/arm64/kernel/machine_kexec.c
+++ b/arch/arm64/kernel/machine_kexec.c
@@ -77,48 +77,6 @@ int machine_kexec_prepare(struct kimage *kimage)
return 0;
}
-/**
- * kexec_list_flush - Helper to flush the kimage list and source pages to PoC.
- */
-static void kexec_list_flush(struct kimage *kimage)
-{
- kimage_entry_t *entry;
-
- dcache_clean_inval_poc((unsigned long)kimage,
- (unsigned long)kimage + sizeof(*kimage));
-
- for (entry = &kimage->head; ; entry++) {
- unsigned int flag;
- unsigned long addr;
-
- /* flush the list entries. */
- dcache_clean_inval_poc((unsigned long)entry,
- (unsigned long)entry +
- sizeof(kimage_entry_t));
-
- flag = *entry & IND_FLAGS;
- if (flag == IND_DONE)
- break;
-
- addr = (unsigned long)phys_to_virt(*entry & PAGE_MASK);
-
- switch (flag) {
- case IND_INDIRECTION:
- /* Set entry point just before the new list page. */
- entry = (kimage_entry_t *)addr - 1;
- break;
- case IND_SOURCE:
- /* flush the source pages. */
- dcache_clean_inval_poc(addr, addr + PAGE_SIZE);
- break;
- case IND_DESTINATION:
- break;
- default:
- BUG();
- }
- }
-}
-
/**
* kexec_segment_flush - Helper to flush the kimage segments to PoC.
*/
@@ -207,7 +165,6 @@ int machine_kexec_post_load(struct kimage *kimage)
(unsigned long)reloc_code + reloc_size);
icache_inval_pou((uintptr_t)reloc_code,
(uintptr_t)reloc_code + reloc_size);
- kexec_list_flush(kimage);
kexec_image_info(kimage);
return 0;
--
2.25.1
next prev parent reply other threads:[~2021-08-02 21:55 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-02 21:53 [PATCH v16 00/15] arm64: MMU enabled kexec relocation Pavel Tatashin
2021-08-02 21:53 ` [PATCH v16 01/15] arm64: kernel: add helper for booted at EL2 and not VHE Pavel Tatashin
2021-08-02 21:53 ` [PATCH v16 02/15] arm64: trans_pgd: hibernate: Add trans_pgd_copy_el2_vectors Pavel Tatashin
2021-08-02 21:53 ` [PATCH v16 03/15] arm64: hibernate: abstract ttrb0 setup function Pavel Tatashin
2021-08-02 21:53 ` [PATCH v16 04/15] arm64: kexec: flush image and lists during kexec load time Pavel Tatashin
2021-08-02 21:53 ` [PATCH v16 05/15] arm64: kexec: skip relocation code for inplace kexec Pavel Tatashin
2021-08-02 21:53 ` [PATCH v16 06/15] arm64: kexec: Use dcache ops macros instead of open-coding Pavel Tatashin
2021-08-02 21:54 ` [PATCH v16 07/15] arm64: kexec: pass kimage as the only argument to relocation function Pavel Tatashin
2021-08-02 21:54 ` [PATCH v16 08/15] arm64: kexec: configure EL2 vectors for kexec Pavel Tatashin
2021-08-02 21:54 ` [PATCH v16 09/15] arm64: kexec: relocate in EL1 mode Pavel Tatashin
2021-08-02 21:54 ` [PATCH v16 10/15] arm64: kexec: use ld script for relocation function Pavel Tatashin
2021-08-02 21:54 ` [PATCH v16 11/15] arm64: kexec: install a copy of the linear-map Pavel Tatashin
2021-08-02 21:54 ` [PATCH v16 12/15] arm64: kexec: keep MMU enabled during kexec relocation Pavel Tatashin
2021-08-02 21:54 ` Pavel Tatashin [this message]
2021-08-02 21:54 ` [PATCH v16 14/15] arm64: kexec: remove cpu-reset.h Pavel Tatashin
2021-08-02 21:54 ` [PATCH v16 15/15] arm64: trans_pgd: remove trans_pgd_map_page() Pavel Tatashin
2021-08-24 18:05 ` [PATCH v16 00/15] arm64: MMU enabled kexec relocation Catalin Marinas
2021-08-26 15:03 ` Pavel Tatashin
2021-09-16 9:37 ` Catalin Marinas
2021-09-16 22:32 ` Pasha Tatashin
2021-09-08 8:59 ` Pingfan Liu
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