From: Sean Christopherson <seanjc@google.com>
To: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
Hou Wenlong <houwenlong.hwl@antgroup.com>,
Lai Jiangshan <laijs@linux.alibaba.com>
Subject: Re: [kvm-unit-tests PATCH V2] x86: Add a test to check effective permissions
Date: Fri, 4 Jun 2021 21:40:07 +0000 [thread overview]
Message-ID: <YLqdt11W6R4FgoIY@google.com> (raw)
In-Reply-To: <20210603225851.26621-1-jiangshanlai@gmail.com>
On Fri, Jun 04, 2021, Lai Jiangshan wrote:
> @@ -326,6 +335,7 @@ static pt_element_t ac_test_alloc_pt(ac_pool_t *pool)
> {
> pt_element_t ret = pool->pt_pool + pool->pt_pool_current;
> pool->pt_pool_current += PAGE_SIZE;
> + memset(va(ret), 0, PAGE_SIZE);
Should this go in a separate patch? This seems like a bug fix.
> return ret;
> }
>
> +static int check_effective_sp_permissions(ac_pool_t *pool)
> +{
> + unsigned long ptr1 = 0x123480000000;
> + unsigned long ptr2 = ptr1 + 2 * 1024 * 1024;
> + unsigned long ptr3 = ptr1 + 1 * 1024 * 1024 * 1024;
> + unsigned long ptr4 = ptr3 + 2 * 1024 * 1024;
I belatedly remembered we have SZ_2M and SZ_1G, I think we can use those here
instead of open coding the math.
next prev parent reply other threads:[~2021-06-04 21:40 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-03 5:05 [kvm-unit-tests PATCH] x86: test combined access Lai Jiangshan
2021-06-03 18:39 ` Sean Christopherson
2021-06-03 22:58 ` [kvm-unit-tests PATCH V2] x86: Add a test to check effective permissions Lai Jiangshan
2021-06-04 21:40 ` Sean Christopherson [this message]
2021-06-06 3:20 ` Lai Jiangshan
2021-06-05 17:49 ` [kvm-unit-tests PATCH V3] " Lai Jiangshan
2021-06-08 0:24 ` Sean Christopherson
2021-06-08 18:49 ` Paolo Bonzini
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=YLqdt11W6R4FgoIY@google.com \
--to=seanjc@google.com \
--cc=houwenlong.hwl@antgroup.com \
--cc=jiangshanlai@gmail.com \
--cc=kvm@vger.kernel.org \
--cc=laijs@linux.alibaba.com \
--cc=pbonzini@redhat.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).