commit c287192df5fdf32ad4109b8980fe6e98048fa411
Author: Jacek Konieczny <[email protected]>
Date: Wed Apr 23 19:11:50 2014 +0200
Added patch to improve EFI PXE boot performance
https://savannah.gnu.org/bugs/?41731
efi-net-fix.patch | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
grub2.spec | 4 +++-
2 files changed, 62 insertions(+), 1 deletion(-)
---
diff --git a/grub2.spec b/grub2.spec
index f323ca6..194cd87 100644
--- a/grub2.spec
+++ b/grub2.spec
@@ -47,7 +47,7 @@ Summary(pt_BR.UTF-8): Gerenciador de inicialização GRUB2
%define beta beta2
Name: grub2
Version: 2.02
-Release: 0.%{beta}.2
+Release: 0.%{beta}.3
License: GPL v2
Group: Base
# git://git.savannah.gnu.org/grub.git
@@ -74,6 +74,7 @@ Patch9: just-say-linux.patch
Patch10: ignore-kernel-symlinks.patch
Patch11: choose-preferred-initrd.patch
Patch12: %{name}-cfg.patch
+Patch13: efi-net-fix.patch
URL: http://www.gnu.org/software/grub/
BuildRequires: autoconf >= 2.53
BuildRequires: automake >= 1:1.11.1-1
@@ -300,6 +301,7 @@ Motyw starfield dla GRUB-a.
%patch10 -p1
%patch11 -p1
%patch12 -p0
+%patch13 -p1
# we don't have C.utf-8 and need an UTF-8 locale for build
sed -i -e 's/LC_ALL=C.UTF-8/LC_ALL=en_US.utf-8/g' po/Makefile* po/Rules*
diff --git a/efi-net-fix.patch b/efi-net-fix.patch
new file mode 100644
index 0000000..41872c0
--- /dev/null
+++ b/efi-net-fix.patch
@@ -0,0 +1,59 @@
+From 886d93184b894a29b0bef1f2467230a20c7a33ce Mon Sep 17 00:00:00 2001
+From: Mark Salter <[email protected]>
+Date: Tue, 8 Apr 2014 10:58:11 -0400
+Subject: [PATCH] reopen SNP protocol for exclusive use by grub
+
+While working with pxeboot of grub on an ARM platform, I noticed
+very poor network performance while grub was loading a kernel
+and initramfs. The performance during the loading of grub itself
+seemed reasonable. Digging into the issue, I found that the UEFI
+firmware was periodically polling for network packets while grub
+was downloading files. This was causing timeouts and retries in
+the grub network stack.
+
+The solution I found was to reopen the SNP protocol for exclusive
+use. This forces UEFI to shutdown its use of SNP so that grub is
+not competing for incoming packets.
+
+Signed-off-by: Mark Salter <[email protected]>
+---
+ grub-core/net/drivers/efi/efinet.c | 16 ++++++++++++++++
+ 1 file changed, 16 insertions(+)
+
+diff --git a/grub-core/net/drivers/efi/efinet.c
b/grub-core/net/drivers/efi/efinet.c
+index 2b344d6..a6e4c79 100644
+--- a/grub-core/net/drivers/efi/efinet.c
++++ b/grub-core/net/drivers/efi/efinet.c
+@@ -223,6 +223,7 @@ grub_efi_net_config_real (grub_efi_handle_t hnd, char
**device,
+ {
+ struct grub_net_card *card;
+ grub_efi_device_path_t *dp;
++ grub_efi_simple_network_t *net;
+
+ dp = grub_efi_get_device_path (hnd);
+ if (! dp)
+@@ -250,6 +251,21 @@ grub_efi_net_config_real (grub_efi_handle_t hnd, char
**device,
+ &pxe_mode->dhcp_ack,
+ sizeof (pxe_mode->dhcp_ack),
+ 1, device, path);
++ net = grub_efi_open_protocol (card->efi_handle, &net_io_guid,
++ GRUB_EFI_OPEN_PROTOCOL_BY_EXCLUSIVE);
++ if (net) {
++ if (net->mode->state == GRUB_EFI_NETWORK_STOPPED
++ && efi_call_1 (net->start, net) != GRUB_EFI_SUCCESS)
++ continue;
++
++ if (net->mode->state == GRUB_EFI_NETWORK_STOPPED)
++ continue;
++
++ if (net->mode->state == GRUB_EFI_NETWORK_STARTED
++ && efi_call_3 (net->initialize, net, 0, 0) != GRUB_EFI_SUCCESS)
++ continue;
++ card->efi_net = net;
++ }
+ return;
+ }
+ }
+--
+1.8.5.3
+
================================================================
---- gitweb:
http://git.pld-linux.org/gitweb.cgi/packages/grub2.git/commitdiff/c287192df5fdf32ad4109b8980fe6e98048fa411
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