* [PATCH] crypto: vmx - comply with ABIs that specify vrsave as reserved.
@ 2016-04-29 14:03 Paulo Flabiano Smorigo
2016-05-03 8:13 ` Herbert Xu
0 siblings, 1 reply; 4+ messages in thread
From: Paulo Flabiano Smorigo @ 2016-04-29 14:03 UTC (permalink / raw)
To: linux-kernel
Cc: Paulo Flabiano Smorigo, Leonidas S. Barbosa, Herbert Xu,
David S. Miller,
open list:IBM Power VMX Cryptographic instructions
It gives significant improvements ( ~+15%) on some modes.
These code has been adopted from OpenSSL project in collaboration
with the original author (Andy Polyakov <appro@openssl.org>).
---
drivers/crypto/vmx/ppc-xlate.pl | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/crypto/vmx/ppc-xlate.pl b/drivers/crypto/vmx/ppc-xlate.pl
index b999733..9f4994c 100644
--- a/drivers/crypto/vmx/ppc-xlate.pl
+++ b/drivers/crypto/vmx/ppc-xlate.pl
@@ -139,6 +139,26 @@ my $vmr = sub {
" vor $vx,$vy,$vy";
};
+# Some ABIs specify vrsave, special-purpose register #256, as reserved
+# for system use.
+my $no_vrsave = ($flavour =~ /aix|linux64le/);
+my $mtspr = sub {
+ my ($f,$idx,$ra) = @_;
+ if ($idx == 256 && $no_vrsave) {
+ " or $ra,$ra,$ra";
+ } else {
+ " mtspr $idx,$ra";
+ }
+};
+my $mfspr = sub {
+ my ($f,$rd,$idx) = @_;
+ if ($idx == 256 && $no_vrsave) {
+ " li $rd,-1";
+ } else {
+ " mfspr $rd,$idx";
+ }
+};
+
# PowerISA 2.06 stuff
sub vsxmem_op {
my ($f, $vrt, $ra, $rb, $op) = @_;
--
2.5.0
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] crypto: vmx - comply with ABIs that specify vrsave as reserved.
2016-04-29 14:03 [PATCH] crypto: vmx - comply with ABIs that specify vrsave as reserved Paulo Flabiano Smorigo
@ 2016-05-03 8:13 ` Herbert Xu
2016-05-05 14:09 ` Paulo Flabiano Smorigo
0 siblings, 1 reply; 4+ messages in thread
From: Herbert Xu @ 2016-05-03 8:13 UTC (permalink / raw)
To: Paulo Flabiano Smorigo
Cc: linux-kernel, Leonidas S. Barbosa, David S. Miller,
open list:IBM Power VMX Cryptographic instructions
On Fri, Apr 29, 2016 at 11:03:05AM -0300, Paulo Flabiano Smorigo wrote:
> It gives significant improvements ( ~+15%) on some modes.
>
> These code has been adopted from OpenSSL project in collaboration
> with the original author (Andy Polyakov <appro@openssl.org>).
No sign-off.
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH] crypto: vmx - comply with ABIs that specify vrsave as reserved.
2016-05-03 8:13 ` Herbert Xu
@ 2016-05-05 14:09 ` Paulo Flabiano Smorigo
2016-05-10 9:53 ` Herbert Xu
0 siblings, 1 reply; 4+ messages in thread
From: Paulo Flabiano Smorigo @ 2016-05-05 14:09 UTC (permalink / raw)
To: linux-kernel
Cc: Paulo Flabiano Smorigo, Leonidas S. Barbosa, Herbert Xu,
David S. Miller,
open list:IBM Power VMX Cryptographic instructions
It gives significant improvements ( ~+15%) on some modes.
These code has been adopted from OpenSSL project in collaboration
with the original author (Andy Polyakov <appro@openssl.org>).
Signed-off-by: Paulo Flabiano Smorigo <pfsmorigo@linux.vnet.ibm.com>
---
drivers/crypto/vmx/ppc-xlate.pl | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/crypto/vmx/ppc-xlate.pl b/drivers/crypto/vmx/ppc-xlate.pl
index b999733..9f4994c 100644
--- a/drivers/crypto/vmx/ppc-xlate.pl
+++ b/drivers/crypto/vmx/ppc-xlate.pl
@@ -139,6 +139,26 @@ my $vmr = sub {
" vor $vx,$vy,$vy";
};
+# Some ABIs specify vrsave, special-purpose register #256, as reserved
+# for system use.
+my $no_vrsave = ($flavour =~ /aix|linux64le/);
+my $mtspr = sub {
+ my ($f,$idx,$ra) = @_;
+ if ($idx == 256 && $no_vrsave) {
+ " or $ra,$ra,$ra";
+ } else {
+ " mtspr $idx,$ra";
+ }
+};
+my $mfspr = sub {
+ my ($f,$rd,$idx) = @_;
+ if ($idx == 256 && $no_vrsave) {
+ " li $rd,-1";
+ } else {
+ " mfspr $rd,$idx";
+ }
+};
+
# PowerISA 2.06 stuff
sub vsxmem_op {
my ($f, $vrt, $ra, $rb, $op) = @_;
--
2.5.5
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2016-05-10 9:53 UTC | newest]
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2016-04-29 14:03 [PATCH] crypto: vmx - comply with ABIs that specify vrsave as reserved Paulo Flabiano Smorigo
2016-05-03 8:13 ` Herbert Xu
2016-05-05 14:09 ` Paulo Flabiano Smorigo
2016-05-10 9:53 ` Herbert Xu
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