From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: linux-sgx@vger.kernel.org
Subject: Re: [PATCH for_v23 v3 09/12] x86/sgx: Split second half of sgx_free_page() to a separate helper
Date: Wed, 23 Oct 2019 14:59:31 +0300 [thread overview]
Message-ID: <20191023115931.GC23733@linux.intel.com> (raw)
In-Reply-To: <20191022033617.GD32147@linux.intel.com>
On Mon, Oct 21, 2019 at 08:36:17PM -0700, Sean Christopherson wrote:
> On Fri, Oct 18, 2019 at 01:06:55PM +0300, Jarkko Sakkinen wrote:
> > On Wed, Oct 16, 2019 at 11:37:42AM -0700, Sean Christopherson wrote:
> > > Move the post-reclaim half of sgx_free_page() to a standalone helper so
> > > that it can be used in flows where the page is known to be
> > > non-reclaimable.
> >
> > The call sites wher it is known to be reclaimable should handle the
> > error instead of creating call site specific versions of the function.
>
> What if we completely split the function(s)? The existing callers of
> sgx_free_page() stay as is, there is one and only one "free_page()", we
> don't take sgx_active_page_list_lock in most flows, and the one case
> where failure is acceptable gets to do its thing. I think this'd make
> both of us happy. E.g.:
The split is a clean way to sort this out.
Makes sense also from "symmetry" perspective: we don't mark pages
reclaimable in sgx_alloc_page().
/Jarkko
next prev parent reply other threads:[~2019-10-23 11:59 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-16 18:37 [PATCH for_v23 v3 00/12] x86/sgx: Bug fixes for v23 Sean Christopherson
2019-10-16 18:37 ` [PATCH for_v23 v3 01/12] x86/sgx: Pass EADD the kernel's virtual address for the source page Sean Christopherson
2019-10-18 9:57 ` Jarkko Sakkinen
2019-10-22 3:22 ` Sean Christopherson
2019-10-23 11:57 ` Jarkko Sakkinen
2019-10-16 18:37 ` [PATCH for_v23 v3 02/12] x86/sgx: Check the validity of the source page address for EADD Sean Christopherson
2019-10-16 18:37 ` [PATCH for_v23 v3 03/12] x86/sgx: Fix EEXTEND error handling Sean Christopherson
2019-10-18 10:42 ` Jarkko Sakkinen
2019-10-16 18:37 ` [PATCH for_v23 v3 04/12] x86/sgx: Drop mmap_sem before EEXTENDing an enclave page Sean Christopherson
2019-10-18 10:04 ` Jarkko Sakkinen
2019-10-16 18:37 ` [PATCH for_v23 v3 05/12] x86/sgx: Remove redundant message from WARN on non-emtpy mm_list Sean Christopherson
2019-10-18 12:08 ` Jarkko Sakkinen
2019-10-16 18:37 ` [PATCH for_v23 v3 06/12] x86/sgx: Fix a memory leak in sgx_encl_destroy() Sean Christopherson
2019-10-18 12:17 ` Jarkko Sakkinen
2019-10-16 18:37 ` [PATCH for_v23 v3 07/12] x86/sgx: WARN on any non-zero return from __eremove() Sean Christopherson
2019-10-16 18:37 ` [PATCH for_v23 v3 08/12] x86/sgx: WARN only once if EREMOVE fails Sean Christopherson
2019-10-16 18:37 ` [PATCH for_v23 v3 09/12] x86/sgx: Split second half of sgx_free_page() to a separate helper Sean Christopherson
2019-10-18 10:06 ` Jarkko Sakkinen
2019-10-22 3:36 ` Sean Christopherson
2019-10-23 11:59 ` Jarkko Sakkinen [this message]
2019-10-16 18:37 ` [PATCH for_v23 v3 10/12] x86/sgx: Use the post-reclaim variant of __sgx_free_page() Sean Christopherson
2019-10-16 18:37 ` [PATCH for_v23 v3 11/12] x86/sgx: Don't update free page count if EPC section allocation fails Sean Christopherson
2019-10-16 18:37 ` [PATCH for_v23 v3 12/12] x86/sgx: Reinstate per EPC section free page counts Sean Christopherson
2019-10-18 12:49 ` Jarkko Sakkinen
2019-10-18 12:55 ` Jarkko Sakkinen
2019-10-18 14:30 ` Sean Christopherson
2019-10-21 11:19 ` Jarkko Sakkinen
2019-10-22 19:35 ` Sean Christopherson
2019-10-23 12:02 ` Jarkko Sakkinen
2019-10-17 18:10 ` [PATCH for_v23 v3 00/12] x86/sgx: Bug fixes for v23 Jarkko Sakkinen
2019-10-17 18:12 ` Jarkko Sakkinen
2019-10-18 13:13 ` Jarkko Sakkinen
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=20191023115931.GC23733@linux.intel.com \
--to=jarkko.sakkinen@linux.intel.com \
--cc=linux-sgx@vger.kernel.org \
--cc=sean.j.christopherson@intel.com \
/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;
as well as URLs for NNTP newsgroup(s).