On Thu, Dec 14, 2017 at 09:36:05PM +, Christopherson, Sean J wrote:
> On Thu, Dec 14, 2017 at 03:10:06PM +0200, Jarkko Sakkinen wrote:
> > On Tue, Dec 12, 2017 at 01:46:48PM -0800, Sean Christopherson wrote:
> > > So it looks like you avoid the described case by moving B to the head of
> > > th
On Thu, Dec 14, 2017 at 03:10:06PM +0200, Jarkko Sakkinen wrote:
> On Tue, Dec 12, 2017 at 01:46:48PM -0800, Sean Christopherson wrote:
> > So it looks like you avoid the described case by moving B to the head of
> > the list in sgx_eldu. The bug I am seeing is still straightforward to
> > theoriz
On Tue, Dec 12, 2017 at 01:46:48PM -0800, Sean Christopherson wrote:
> So it looks like you avoid the described case by moving B to the head of
> the list in sgx_eldu. The bug I am seeing is still straightforward to
> theorize:
>
> 1. Three VA pages. List = A->B->C
> 2. Fill A and B, use
On Tue, Dec 12, 2017 at 01:32:28PM -0800, Sean Christopherson wrote:
> On Thu, 2017-12-07 at 18:05 +0200, Jarkko Sakkinen wrote:
> > On Thu, Dec 07, 2017 at 02:46:39PM +, Christopherson, Sean J wrote:
> > >
> > > >
> > > > + for (i = 0; i < 2; i++) {
> > > > + va_page = li
On Fri, Dec 08, 2017 at 03:31:38PM +, Christopherson, Sean J wrote:
> Three VA pages in the enclave: A, B and C. Evict all pages in the
> enclave, i.e. consume all slots in A, B and C. The list can be in
> any order at this point, but for the sake of argument let's say the
> order is C->A->B,
On Fri, 2017-12-08 at 07:31 -0800, Christopherson, Sean J wrote:
> Jarkko Sakkinen wrote:
> > On Thu, Dec 07, 2017 at 02:46:39PM +, Christopherson, Sean J wrote:
> > > > + for (i = 0; i < 2; i++) {
> > > > + va_page = list_first_entry(&encl->va_pages,
> > > > +
On Thu, 2017-12-07 at 18:05 +0200, Jarkko Sakkinen wrote:
> On Thu, Dec 07, 2017 at 02:46:39PM +, Christopherson, Sean J wrote:
> >
> > >
> > > + for (i = 0; i < 2; i++) {
> > > + va_page = list_first_entry(&encl->va_pages,
> > > + struct sgx_va_page
> Subject: [intel-sgx-kernel-dev] [PATCH v7 4/8] intel_sgx: driver for Intel
> Software Guard Extensions
>
> Intel SGX is a set of CPU instructions that can be used by applications
> to set aside private regions of code and data. The code outside the
> enclave is disallowed to access the memory i
Jarkko Sakkinen wrote:
> On Thu, Dec 07, 2017 at 02:46:39PM +, Christopherson, Sean J wrote:
> > > + for (i = 0; i < 2; i++) {
> > > + va_page = list_first_entry(&encl->va_pages,
> > > +struct sgx_va_page, list);
> > > + va_offset = sgx_alloc
On Thu, Dec 07, 2017 at 06:05:48PM +0200, Jarkko Sakkinen wrote:
> On Thu, Dec 07, 2017 at 02:46:39PM +, Christopherson, Sean J wrote:
> > > + for (i = 0; i < 2; i++) {
> > > + va_page = list_first_entry(&encl->va_pages,
> > > +struct sgx_va_page, lis
On Thu, Dec 07, 2017 at 02:46:39PM +, Christopherson, Sean J wrote:
> > + for (i = 0; i < 2; i++) {
> > + va_page = list_first_entry(&encl->va_pages,
> > + struct sgx_va_page, list);
> > + va_offset = sgx_alloc_va_slot(va_page);
> > +
Jarkko Sakkinen wrote:
> +static void sgx_ewb(struct sgx_encl *encl, struct sgx_encl_page *entry)
> +{
> + struct sgx_va_page *va_page;
> + unsigned int va_offset;
> + int ret;
> + int i;
> +
> + for (i = 0; i < 2; i++) {
> + va_page = list_first_entry(&encl->va_pag
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