diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0121-crypto-ccp-Fix-command-completion-detection-race.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0121-crypto-ccp-Fix-command-completion-detection-race.patch | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0121-crypto-ccp-Fix-command-completion-detection-race.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0121-crypto-ccp-Fix-command-completion-detection-race.patch deleted file mode 100644 index f4b839c7..00000000 --- a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0121-crypto-ccp-Fix-command-completion-detection-race.patch +++ /dev/null @@ -1,50 +0,0 @@ -From b17bd890fe5b98844c4fa5d44cc461dd82206d88 Mon Sep 17 00:00:00 2001 -From: Tom Lendacky <thomas.lendacky@amd.com> -Date: Tue, 3 Jul 2018 12:11:33 -0500 -Subject: [PATCH 121/131] crypto: ccp - Fix command completion detection race - -The wait_event() function is used to detect command completion. The -interrupt handler will set the wait condition variable when the interrupt -is triggered. However, the variable used for wait_event() is initialized -after the command has been submitted, which can create a race condition -with the interrupt handler and result in the wait_event() never returning. -Move the initialization of the wait condition variable to just before -command submission. - -Fixes: 200664d5237f ("crypto: ccp: Add Secure Encrypted Virtualization (SEV) command support") -Cc: <stable@vger.kernel.org> # 4.16.x- -Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> -Reviewed-by: Brijesh Singh <brijesh.singh@amd.com> -Acked-by: Gary R Hook <gary.hook@amd.com> -Acked-by: Gary R Hook <gary.hook@amd.com> -Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> -Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com> ---- - drivers/crypto/ccp/psp-dev.c | 4 ++-- - 1 file changed, 2 insertions(+), 2 deletions(-) - -diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c -index ff478d8..973d683 100644 ---- a/drivers/crypto/ccp/psp-dev.c -+++ b/drivers/crypto/ccp/psp-dev.c -@@ -84,8 +84,6 @@ static irqreturn_t psp_irq_handler(int irq, void *data) - - static void sev_wait_cmd_ioc(struct psp_device *psp, unsigned int *reg) - { -- psp->sev_int_rcvd = 0; -- - wait_event(psp->sev_int_queue, psp->sev_int_rcvd); - *reg = ioread32(psp->io_regs + PSP_CMDRESP); - } -@@ -148,6 +146,8 @@ static int __sev_do_cmd_locked(int cmd, void *data, int *psp_ret) - iowrite32(phys_lsb, psp->io_regs + PSP_CMDBUFF_ADDR_LO); - iowrite32(phys_msb, psp->io_regs + PSP_CMDBUFF_ADDR_HI); - -+ psp->sev_int_rcvd = 0; -+ - reg = cmd; - reg <<= PSP_CMDRESP_CMD_SHIFT; - reg |= PSP_CMDRESP_IOC; --- -2.7.4 - |