From: Catalin Marinas <catalin.marinas@arm.com>
To: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: jmorris@namei.org, sashal@kernel.org, ebiederm@xmission.com,
kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
corbet@lwn.net, 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: Re: [PATCH v17 15/15] arm64: trans_pgd: remove trans_pgd_map_page()
Date: Wed, 29 Sep 2021 17:43:34 +0100 [thread overview]
Message-ID: <YVSXtswhm6iTC3yz@arm.com> (raw)
In-Reply-To: <20210916231325.125533-16-pasha.tatashin@soleen.com>
On Thu, Sep 16, 2021 at 07:13:25PM -0400, Pasha Tatashin wrote:
> The intend of trans_pgd_map_page() was to map contiguous range of VA
> memory to the memory that is getting relocated during kexec. However,
> since we are now using linear map instead of contiguous range this
> function is not needed
>
> Suggested-by: Pingfan Liu <kernelfans@gmail.com>
> Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
> ---
> arch/arm64/include/asm/trans_pgd.h | 5 +--
> arch/arm64/mm/trans_pgd.c | 57 ------------------------------
> 2 files changed, 1 insertion(+), 61 deletions(-)
>
> diff --git a/arch/arm64/include/asm/trans_pgd.h b/arch/arm64/include/asm/trans_pgd.h
> index 7b04d32b102c..033d400a4ea4 100644
> --- a/arch/arm64/include/asm/trans_pgd.h
> +++ b/arch/arm64/include/asm/trans_pgd.h
> @@ -15,7 +15,7 @@
> /*
> * trans_alloc_page
> * - Allocator that should return exactly one zeroed page, if this
> - * allocator fails, trans_pgd_create_copy() and trans_pgd_map_page()
> + * allocator fails, trans_pgd_create_copy() and trans_pgd_idmap_page()
> * return -ENOMEM error.
> *
> * trans_alloc_arg
> @@ -30,9 +30,6 @@ struct trans_pgd_info {
> int trans_pgd_create_copy(struct trans_pgd_info *info, pgd_t **trans_pgd,
> unsigned long start, unsigned long end);
>
> -int trans_pgd_map_page(struct trans_pgd_info *info, pgd_t *trans_pgd,
> - void *page, unsigned long dst_addr, pgprot_t pgprot);
So this function never got used in mainline after commit 7018d467ff2d
("arm64: trans_pgd: hibernate: idmap the single page that holds the copy
page routines"). I guess it's because we merged part of v10 of this
series and in v12 you dropped the contiguous VA range in favour of a
copy of the linear map.
--
Catalin
next prev parent reply other threads:[~2021-09-29 16:43 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-16 23:13 [PATCH v17 00/15] arm64: MMU enabled kexec relocation Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 01/15] arm64: kernel: add helper for booted at EL2 and not VHE Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 02/15] arm64: trans_pgd: hibernate: Add trans_pgd_copy_el2_vectors Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 03/15] arm64: hibernate: abstract ttrb0 setup function Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 04/15] arm64: kexec: flush image and lists during kexec load time Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 05/15] arm64: kexec: skip relocation code for inplace kexec Pasha Tatashin
2021-09-29 12:13 ` Will Deacon
2021-09-30 2:44 ` Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 06/15] arm64: kexec: Use dcache ops macros instead of open-coding Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 07/15] arm64: kexec: pass kimage as the only argument to relocation function Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 08/15] arm64: kexec: configure EL2 vectors for kexec Pasha Tatashin
2021-09-29 12:35 ` Will Deacon
2021-09-30 3:54 ` Pasha Tatashin
2021-09-30 8:16 ` Will Deacon
2021-09-30 11:59 ` Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 09/15] arm64: kexec: relocate in EL1 mode Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 10/15] arm64: kexec: use ld script for relocation function Pasha Tatashin
2021-09-29 12:45 ` Will Deacon
2021-09-30 3:57 ` Pasha Tatashin
2021-09-30 4:08 ` Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 11/15] arm64: kexec: install a copy of the linear-map Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 12/15] arm64: kexec: keep MMU enabled during kexec relocation Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 13/15] arm64: kexec: remove the pre-kexec PoC maintenance Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 14/15] arm64: kexec: remove cpu-reset.h Pasha Tatashin
2021-09-16 23:13 ` [PATCH v17 15/15] arm64: trans_pgd: remove trans_pgd_map_page() Pasha Tatashin
2021-09-29 16:43 ` Catalin Marinas [this message]
2021-09-30 4:12 ` Pasha Tatashin
2021-09-29 12:49 ` [PATCH v17 00/15] arm64: MMU enabled kexec relocation Will Deacon
2021-09-30 4:13 ` Pasha Tatashin
2021-09-29 17:21 ` Catalin Marinas
2021-09-30 4:13 ` Pasha Tatashin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YVSXtswhm6iTC3yz@arm.com \
--to=catalin.marinas@arm.com \
--cc=akpm@linux-foundation.org \
--cc=corbet@lwn.net \
--cc=ebiederm@xmission.com \
--cc=james.morse@arm.com \
--cc=jmorris@namei.org \
--cc=kernelfans@gmail.com \
--cc=kexec@lists.infradead.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=madvenka@linux.microsoft.com \
--cc=mark.rutland@arm.com \
--cc=matthias.bgg@gmail.com \
--cc=maz@kernel.org \
--cc=pasha.tatashin@soleen.com \
--cc=rfontana@redhat.com \
--cc=sashal@kernel.org \
--cc=selindag@gmail.com \
--cc=steve.capper@arm.com \
--cc=tglx@linutronix.de \
--cc=tyhicks@linux.microsoft.com \
--cc=vladimir.murzin@arm.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox