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 4/5] x86/sgx: Validate TCS permssions in sgx_validate_secinfo()
Date: Fri, 23 Aug 2019 16:41:38 +0300 [thread overview]
Message-ID: <40ddfa6f1779332a37fb57590a1f8530ea62a909.camel@linux.intel.com> (raw)
In-Reply-To: <20190823020522.GK25467@linux.intel.com>
On Thu, 2019-08-22 at 19:05 -0700, Sean Christopherson wrote:
> > This can we verified from the SDM easily (SCRATCH_SECINFO gets zeros
> > is extended after that).
> >
> > And also from my signing tool :-)
> >
> > for (offset = 0; offset < sb.st_size; offset += 0x1000) {
> > if (!offset)
> > flags = SGX_SECINFO_TCS;
> > else
> > flags = SGX_SECINFO_REG | SGX_SECINFO_R |
> > SGX_SECINFO_W | SGX_SECINFO_X;
> >
> > OK, so this looks like that my patch does exactly the right thing,
> > right?
>
> That's my understanding as well. Definitely worthy of a comment
> explaining all of the above.
Now that I looked at my own code I even remember going through this
same thought process three years ago when I wrote that :-) Oh well.
So should I apply my zero check patch?
/Jarkko
next prev parent reply other threads:[~2019-08-23 13:41 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-19 15:25 [PATCH 0/5] x86/sgx: Improve permission handing Jarkko Sakkinen
2019-08-19 15:25 ` [PATCH 1/5] x86/sgx: Document permission handling better Jarkko Sakkinen
2019-08-22 3:43 ` Sean Christopherson
2019-08-22 16:04 ` Jarkko Sakkinen
2019-08-19 15:25 ` [PATCH 2/5] x86/sgx: Use memchr_inv() in sgx_validate_secinfo() Jarkko Sakkinen
2019-08-22 3:47 ` Sean Christopherson
2019-08-22 16:20 ` Jarkko Sakkinen
2019-08-19 15:25 ` [PATCH 3/5] x86/sgx: Make sgx_validate_secinfo() more readable Jarkko Sakkinen
2019-08-22 3:48 ` Sean Christopherson
2019-08-22 16:26 ` Jarkko Sakkinen
2019-08-22 10:39 ` Ayoun, Serge
2019-08-22 16:45 ` Jarkko Sakkinen
2019-08-19 15:25 ` [PATCH 4/5] x86/sgx: Validate TCS permssions in sgx_validate_secinfo() Jarkko Sakkinen
2019-08-21 18:45 ` Jarkko Sakkinen
2019-08-22 11:33 ` Ayoun, Serge
2019-08-22 14:27 ` Sean Christopherson
2019-08-22 16:46 ` Jarkko Sakkinen
2019-08-22 16:59 ` Jarkko Sakkinen
2019-08-22 3:55 ` Sean Christopherson
2019-08-22 16:31 ` Jarkko Sakkinen
2019-08-22 16:34 ` Sean Christopherson
2019-08-23 0:39 ` Jarkko Sakkinen
2019-08-23 0:57 ` Jarkko Sakkinen
2019-08-23 2:05 ` Sean Christopherson
2019-08-23 13:41 ` Jarkko Sakkinen [this message]
2019-08-22 16:38 ` Jarkko Sakkinen
2019-08-19 15:25 ` [PATCH 5/5] x86/sgx: Rename vm_prot_bits as max_vm_flags Jarkko Sakkinen
2019-08-22 4:00 ` Sean Christopherson
2019-08-22 16:43 ` Jarkko Sakkinen
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