diff options
| author | Damien Zammit <damien@zamaudio.com> | 2023-09-25 00:24:25 +0000 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2023-09-25 10:21:29 +0200 |
| commit | b3921098e2807d6225d277986bc8063b6a271e88 (patch) | |
| tree | 93aa20fdb9f5ef3055069dd913afd0ad09d4ca23 /x86_64 | |
| parent | be0abe4c2361f2c7db5a52b0900e298083fefe40 (diff) | |
percpu: active_stack with gs
Message-Id: <20230925002417.467022-1-damien@zamaudio.com>
Diffstat (limited to 'x86_64')
| -rw-r--r-- | x86_64/cswitch.S | 10 | ||||
| -rw-r--r-- | x86_64/locore.S | 2 |
2 files changed, 5 insertions, 7 deletions
diff --git a/x86_64/cswitch.S b/x86_64/cswitch.S index 29dae62c..9c4640fd 100644 --- a/x86_64/cswitch.S +++ b/x86_64/cswitch.S @@ -40,7 +40,7 @@ ENTRY(Load_context) lea KERNEL_STACK_SIZE-IKS_SIZE-IEL_SIZE(%rcx),%rdx /* point to stack top */ CPU_NUMBER(%eax) - movq %rcx,CX(EXT(active_stacks),%rax) /* store stack address */ + movq %rcx,MY(ACTIVE_STACK) /* store stack address */ movq %rdx,CX(EXT(kernel_stack),%rax) /* store stack top */ /* XXX complete */ @@ -61,8 +61,7 @@ ENTRY(Load_context) */ ENTRY(Switch_context) - CPU_NUMBER(%eax) - movq CX(EXT(active_stacks),%rax),%rcx /* get old kernel stack */ + movq MY(ACTIVE_STACK),%rcx /* get old kernel stack */ movq %r12,KSS_R12(%rcx) /* save registers */ movq %r13,KSS_R13(%rcx) @@ -86,7 +85,7 @@ ENTRY(Switch_context) CPU_NUMBER(%eax) movq %rsi,MY(ACTIVE_THREAD) /* new thread is active */ - movq %rcx,CX(EXT(active_stacks),%rax) /* set current stack */ + movq %rcx,MY(ACTIVE_STACK) /* set current stack */ movq %rbx,CX(EXT(kernel_stack),%rax) /* set stack top */ movq KSS_ESP(%rcx),%rsp /* switch stacks */ @@ -119,8 +118,7 @@ ENTRY(Thread_continue) */ ENTRY(switch_to_shutdown_context) ud2 - CPU_NUMBER(%eax) - movq CX(EXT(active_stacks),%rax),%rcx /* get old kernel stack */ + movq MY(ACTIVE_STACK),%rcx /* get old kernel stack */ movq %r12,KSS_R12(%rcx) /* save registers */ movq %r13,KSS_R13(%rcx) movq %r14,KSS_R14(%rcx) diff --git a/x86_64/locore.S b/x86_64/locore.S index 55dc4d27..7eaeda3b 100644 --- a/x86_64/locore.S +++ b/x86_64/locore.S @@ -673,7 +673,7 @@ trap_from_kernel: cmpq CX(EXT(kernel_stack),%rdx),%rsp /* already on kernel stack? */ ja 0f - cmpq CX(EXT(active_stacks),%rdx),%rsp + cmpq MY(ACTIVE_STACK),%rsp ja 1f /* switch if not */ 0: movq CX(EXT(kernel_stack),%rdx),%rsp |