[PATCH 1/2] nova-core: remove an unnecessary register read: HWCFG1

John Hubbard posted 2 patches 3 months, 2 weeks ago
[PATCH 1/2] nova-core: remove an unnecessary register read: HWCFG1
Posted by John Hubbard 3 months, 2 weeks ago
This register read is not required in order to bring up any of the GPUs,
and it is read too early on Hopper/Blackwell+ GPUs anyway. So just stop
doing this.

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
 drivers/gpu/nova-core/falcon.rs | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/gpu/nova-core/falcon.rs b/drivers/gpu/nova-core/falcon.rs
index 3f505b870601..ac55cbc5ac1e 100644
--- a/drivers/gpu/nova-core/falcon.rs
+++ b/drivers/gpu/nova-core/falcon.rs
@@ -371,11 +371,6 @@ pub(crate) fn new(
         bar: &Bar0,
         need_riscv: bool,
     ) -> Result<Self> {
-        let hwcfg1 = regs::NV_PFALCON_FALCON_HWCFG1::read(bar, &E::ID);
-        // Check that the revision and security model contain valid values.
-        let _ = hwcfg1.core_rev()?;
-        let _ = hwcfg1.security_model()?;
-
         if need_riscv {
             let hwcfg2 = regs::NV_PFALCON_FALCON_HWCFG2::read(bar, &E::ID);
             if !hwcfg2.riscv() {
-- 
2.51.1