diff options
Diffstat (limited to '0003-firmware-tegra-bpmp-Do-only-aligned-access-to-IPC-me.patch')
| -rw-r--r-- | 0003-firmware-tegra-bpmp-Do-only-aligned-access-to-IPC-me.patch | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/0003-firmware-tegra-bpmp-Do-only-aligned-access-to-IPC-me.patch b/0003-firmware-tegra-bpmp-Do-only-aligned-access-to-IPC-me.patch deleted file mode 100644 index 216708899a77..000000000000 --- a/0003-firmware-tegra-bpmp-Do-only-aligned-access-to-IPC-me.patch +++ /dev/null @@ -1,57 +0,0 @@ -From 515af71adf3d5e05587c7bb27c1725c20cd259a0 Mon Sep 17 00:00:00 2001 -From: Timo Alho <talho@nvidia.com> -Date: Wed, 22 Jun 2022 16:22:59 +0300 -Subject: [PATCH 03/73] firmware: tegra: bpmp: Do only aligned access to IPC - memory area - -commit a4740b148a04dc60e14fe6a1dfe216d3bae214fd upstream. - -Use memcpy_toio and memcpy_fromio variants of memcpy to guarantee no -unaligned access to IPC memory area. This is to allow the IPC memory to -be mapped as Device memory to further suppress speculative reads from -happening within the 64 kB memory area above the IPC memory when 64 kB -memory pages are used. - -Signed-off-by: Timo Alho <talho@nvidia.com> -Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> -Signed-off-by: Thierry Reding <treding@nvidia.com> -Cc: Jon Hunter <jonathanh@nvidia.com> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - drivers/firmware/tegra/bpmp.c | 6 +++--- - 1 file changed, 3 insertions(+), 3 deletions(-) - -diff --git a/drivers/firmware/tegra/bpmp.c b/drivers/firmware/tegra/bpmp.c -index 5654c5e9862b..037db21de510 100644 ---- a/drivers/firmware/tegra/bpmp.c -+++ b/drivers/firmware/tegra/bpmp.c -@@ -201,7 +201,7 @@ static ssize_t __tegra_bpmp_channel_read(struct tegra_bpmp_channel *channel, - int err; - - if (data && size > 0) -- memcpy(data, channel->ib->data, size); -+ memcpy_fromio(data, channel->ib->data, size); - - err = tegra_bpmp_ack_response(channel); - if (err < 0) -@@ -245,7 +245,7 @@ static ssize_t __tegra_bpmp_channel_write(struct tegra_bpmp_channel *channel, - channel->ob->flags = flags; - - if (data && size > 0) -- memcpy(channel->ob->data, data, size); -+ memcpy_toio(channel->ob->data, data, size); - - return tegra_bpmp_post_request(channel); - } -@@ -420,7 +420,7 @@ void tegra_bpmp_mrq_return(struct tegra_bpmp_channel *channel, int code, - channel->ob->code = code; - - if (data && size > 0) -- memcpy(channel->ob->data, data, size); -+ memcpy_toio(channel->ob->data, data, size); - - err = tegra_bpmp_post_response(channel); - if (WARN_ON(err < 0)) --- -2.37.3 - |